TY - JOUR T1 - Dietary assimilation of cadmium associated with bacterial exopolymer sediment coatings by the estuarine amphipod Leptocheirus plumulosus: effects of Cd concentration and salinity AN - 17418839; 4634187 AB - Bacterial extracellular substances (also known as exopolysaccharides, or EPS) may serve as vectors for trophic transfer of metals in benthic systems because these ubiquitous sediment coatings can sorb high concentrations of toxic metals, and because many benthic invertebrates assimilate EPS sediment coatings upon ingestion. We conducted 3 sets of experiments to determine the assimilative bioavailability of EPS-associated Cd to the benthic amphipod Leptocheirus plumulosus as a function of Cd concentration and salinity. Bioavailability was measured as L. plumulosus Cd assimilation efficiency (AE) from EPS-coated silica (EPS-Si) and from uncoated silica (NC-Si) using modified pulse-chase methods with the gamma-emitting radioisotope super(109)Cd. Cd AE was significantly greater from NC-Si than from EPS-Si at 7.5 ppt, but not at 2.5 or 25 ppt. Overall, Cd AE from EPS-Si was between 15.1 and 21.5%. Because EPS-Si sorbed more Cd than NC-Si, EPS coatings magnified the amount of Cd amphipods accumulated at each salinity by up to a factor of 10. Salinity did not directly affect Cd AE from EPS-Si, but because Cd-EPS partitioning increased with decreasing salinity, amphipods accumulated more Cd from EPS at the lowest Cd-EPS incubation salinity (2.5 ppt) than at higher salinities (7.5 and 25 ppt). Finally, Cd concentration in EPS exhibited an inverse relationship with Cd AE at 2.5 ppt, but not at 25 ppt. Specifically, Cd AE was 12 times greater at 1 compared with 10 mu g Cd mu g super(-1) EPS. Together, these results show that estuarine benthos can accumulate Cd from EPS sediment coatings, but that the degree to which this phenomenon occurs is dependent upon seawater salinity and Cd concentration in EPS. JF - Marine Ecology Progress Series AU - Schlekat, CE AU - Decho, A W AU - Chandler, G T AD - U.S. Geological Survey, Water Resources Division, MS 465, 345 Middlefield Road, Menlo Park, California 94025, USA, cschleka@usgs.gov Y1 - 1999/07/06/ PY - 1999 DA - 1999 Jul 06 SP - 205 EP - 216 VL - 183 SN - 0171-8630, 0171-8630 KW - cadmium KW - bacteria KW - exopolysaccharides KW - Pollution Abstracts; Toxicology Abstracts; Water Resources Abstracts; Ecology Abstracts; Oceanic Abstracts KW - Polysaccharides KW - Food conversion KW - Salinity KW - Salinity effects KW - Cadmium KW - Marine crustaceans KW - Diets KW - Metals KW - Sediment pollution KW - Bacteria KW - Estuaries KW - Toxins KW - Leptocheirus plumulosus KW - Silica KW - Bioaccumulation KW - Water Pollution Effects KW - Benthos KW - Crustaceans KW - O 4020:Pollution - Organisms/Ecology/Toxicology KW - X 24171:Microbial KW - P 1000:MARINE POLLUTION KW - D 04665:Crustaceans KW - SW 3030:Effects of pollution KW - X 24163:Metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17418839?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Marine+Ecology+Progress+Series&rft.atitle=Dietary+assimilation+of+cadmium+associated+with+bacterial+exopolymer+sediment+coatings+by+the+estuarine+amphipod+Leptocheirus+plumulosus%3A+effects+of+Cd+concentration+and+salinity&rft.au=Schlekat%2C+CE%3BDecho%2C+A+W%3BChandler%2C+G+T&rft.aulast=Schlekat&rft.aufirst=CE&rft.date=1999-07-06&rft.volume=183&rft.issue=&rft.spage=205&rft.isbn=&rft.btitle=&rft.title=Marine+Ecology+Progress+Series&rft.issn=01718630&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2009-07-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Leptocheirus plumulosus; Estuaries; Crustaceans; Diets; Cadmium; Water Pollution Effects; Bioaccumulation; Bacteria; Sediment pollution; Salinity; Toxins; Food conversion; Salinity effects; Marine crustaceans; Polysaccharides; Benthos; Silica; Metals ER - TY - JOUR T1 - Metal and sediment ingestion by dabbling ducks. AN - 70011217; 10472136 AB - The chemical analysis of intestinal digesta from hunter-killed carcasses or of wildlife scat is a promising means of estimating the exposure of wildlife to those environmental contaminants that, like lead, are poorly absorbed in the digestive tract. When evaluating contaminants at a site, biologists may find the results of this non-destructive approach more straightforward to interpret in terms of exposure to wildlife than would be analyses of soils, sediments, water, or wildlife tissues. To illustrate the approach, we collected digesta from 47 waterfowl shot by hunters at Prime Hook National Wildlife Refuge, in Delaware, USA. The waterfowl digesta contained an average of approximately 2.4% sediment, estimated from the Al concentrations in the digesta, a marker for sediment. Al concentrations were significantly correlated with concentrations of Cr (Spearman's rank correlation coefficient, r = 0.57), V (r = 0.70), Ni (r = 0.31), and Pb (r = 0.55), and we concluded that these metals were ingested mainly with sediment. American widgeon (Anas americana) ingested sediment at a rate of about four times that of three other species of dabbling ducks (Anas crecca, A. acuta, A. rubripes) and had several times the exposure to the sediment-associated metals. The digesta of one American black duck contained a high concentration of lead (70 mg/kg, dry wt.), presumably from lead shot, but none of the other samples had notably elevated metal concentrations. We suggest that scat and digesta be analyzed more widely by biologists and resource managers seeking a simple, inexpensive assessment of contaminants in local wildlife habitat. JF - The Science of the total environment AU - Beyer, W N AU - Spann, J AU - Day, D AD - US Geological Survey, Patuxent Wildlife Research Center, Laurel, MD 20708-4041, USA. Nelson_Beyer@usgs.gov Y1 - 1999/07/01/ PY - 1999 DA - 1999 Jul 01 SP - 235 EP - 239 VL - 231 IS - 2-3 SN - 0048-9697, 0048-9697 KW - Environmental Pollutants KW - 0 KW - Metals KW - Lead KW - 2P299V784P KW - Aluminum KW - CPD4NFA903 KW - Index Medicus KW - Ecosystem KW - Animals KW - Delaware KW - Digestive System -- metabolism KW - Diet KW - Species Specificity KW - Lead -- analysis KW - Aluminum -- analysis KW - Geologic Sediments -- analysis KW - Environmental Pollutants -- analysis KW - Ducks -- metabolism KW - Metals -- analysis UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/70011217?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Science+of+the+total+environment&rft.atitle=Metal+and+sediment+ingestion+by+dabbling+ducks.&rft.au=Beyer%2C+W+N%3BSpann%2C+J%3BDay%2C+D&rft.aulast=Beyer&rft.aufirst=W&rft.date=1999-07-01&rft.volume=231&rft.issue=2-3&rft.spage=235&rft.isbn=&rft.btitle=&rft.title=The+Science+of+the+total+environment&rft.issn=00489697&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1999-10-06 N1 - Date created - 1999-10-06 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Difluoromethane as partitioning tracer to estimate vadose water saturations AN - 52214492; 2001-048779 JF - Journal of Environmental Engineering AU - Deeds, Neil E AU - McKinney, Daene C AU - Pope, Gary A AU - Whitley, G Allen, Jr Y1 - 1999/07// PY - 1999 DA - July 1999 SP - 630 EP - 633 PB - American Society of Civil Engineers, Environmental Engineering Division, New York, NY VL - 125 IS - 7 SN - 0733-9372, 0733-9372 KW - soils KW - experimental studies KW - one-dimensional models KW - injection KW - unsaturated zone KW - prediction KW - pollution KW - partitioning interwell tracer test KW - difluoromethane KW - remediation KW - nonaqueous phase liquids KW - partitioning KW - tests KW - saturation KW - tracers KW - PITT KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52214492?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Environmental+Engineering&rft.atitle=Difluoromethane+as+partitioning+tracer+to+estimate+vadose+water+saturations&rft.au=Deeds%2C+Neil+E%3BMcKinney%2C+Daene+C%3BPope%2C+Gary+A%3BWhitley%2C+G+Allen%2C+Jr&rft.aulast=Deeds&rft.aufirst=Neil&rft.date=1999-07-01&rft.volume=125&rft.issue=7&rft.spage=630&rft.isbn=&rft.btitle=&rft.title=Journal+of+Environmental+Engineering&rft.issn=07339372&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Number of references - 12 N1 - PubXState - NY N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - JOEEDU N1 - SubjectsTermNotLitGenreText - difluoromethane; experimental studies; injection; nonaqueous phase liquids; one-dimensional models; partitioning; partitioning interwell tracer test; PITT; pollution; prediction; remediation; saturation; soils; tests; tracers; unsaturated zone ER - TY - JOUR T1 - Salt Marsh Diking and Restoration: Biogeochemical Implications of Altered Wetland Hydrology AN - 27126928; 2001-31-002568 (CE); 04568689 (EN) AB - In salt marshes, most biomass plus large reserves of biologically important N, P, Fe, and S are sequestered below ground under saline, waterlogged, and anaerobic conditions. Thus, hydrologic alterations such as diking and ditch drainage that reduce salinity and increase peat aeration can cause radical changes in the composition of salt marsh soils. Experimental short-term desalination and drainage of salt marsh cores in greenhouse microcosms caused Spartina production to increase after one growing season, reflecting decreased salt stress and sulfide toxicity. However, production thereafter declined, likely due to pyrite oxidation and acidification in drained treatments and sulfide accumulation in waterlogged treatments. A survey of longer-term (decadal) effects of diking on peat composition of Cape Cod, Massachusetts, USA, marshes revealed acidification, Fe(II) mobilization, and decreased organic content in drained sites. Despite the aerobic decomposition of organic matter, abundant nutrients remained as sorbed NH4 and mineral-bound PO4. In diked, seasonally waterlogged sites, porewater alkalinity, sulfide, ammonium and orthophosphate were much lower, and organic solids higher, than in adjacent natural marsh. Seawater was added to cores from diked marshes to study the effects of tidal restoration. Salination of the drained peat increased porewater pH, alkalinity, ammonium, orthophosphate, Fe, and Al; copious ammonium N, and Fe(II) for sulfide precipitation favored Spartina growth. Salination of diked-waterlogged peat increased sulfate reduction and caused 6-8 cm of sediment subsidence. The resulting increase in porewater sulfides and waterlogging decreased vigor of transplanted Spartina alterniflora. Results indicate that seawater restoration should proceed cautiously to avoid nutrient loading of surface waters in drained sites or sulfide toxicity in diked-waterlogged marshes. JF - Environmental Management AU - Portnoy, J W AD - National Park Service, Cape Cod National Seashore, 99 Marconi Site Road, Wellfleet, Massachusetts 02667, USA PY - 1999 SP - 0111 EP - 0120 PB - Springer-Verlag (New York), 175 Fifth Ave , New York, NY, 10010, USA, [URL:http://www.link.springer-ny.com] VL - 24 IS - 1 SN - 0364-152X, 0364-152X KW - Civil Engineering (CE); Environmental Engineering (EN) KW - Publisher ID: EM2039 KW - Marshes KW - Sulfides KW - Peat KW - Restoration KW - Toxicity KW - Iron KW - Nutrients KW - Acidification KW - pH KW - Salination KW - Management KW - Desalination KW - Wetlands KW - Aluminum base alloys KW - Oxidation KW - Sulfates KW - Stresses KW - Precipitation KW - Biomass KW - Article KW - EE 10:General Environmental Engineering (EN) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/27126928?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Management&rft.atitle=Salt+Marsh+Diking+and+Restoration%3A+Biogeochemical+Implications+of+Altered+Wetland+Hydrology&rft.au=Portnoy%2C+J+W&rft.aulast=Portnoy&rft.aufirst=J&rft.date=1999-07-01&rft.volume=24&rft.issue=1&rft.spage=0111&rft.isbn=&rft.btitle=&rft.title=Environmental+Management&rft.issn=0364152X&rft_id=info:doi/10.1007%2Fs002679900219 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2011-11-11 DO - http://dx.doi.org/10.1007/s002679900219 ER - TY - JOUR T1 - Harlequin duck recovery from the Exxon Valdez oil spill: A population genetics perspective AN - 17586958; 4677092 AB - Concerns about Harlequin Duck (Histrionicus histrionicus) population recovery following the Exxon Valdez oil spill led biologists to ask whether birds located in different molting and wintering areas belong to genetically distinct and, thus, demographically independent populations. Owing to the lack of direct observations of movements among marine areas, three classes of genetic markers that differed in mode of inheritance were used to evaluate the degree of genetic differentiation among wintering areas within Prince William Sound (PWS) and the Alaska Peninsula and Kodiak Archipelago (APKA). We could not reject the null hypothesis that the wintering aggregations within each region are composed of a single genetically panmictic population. Differences in genotype frequencies among wintering locations within PWS and APKA were low and nonsignificant for all three classes of markers. Furthermore, we saw no evidence for deviations in Hardy-Weinberg equilibrium or gametic disequilibrium between loci within a winter collection site as would be expected if these locales were composed of individuals from reproductively isolated (and genetically distinct) breeding locales. Finally, no evidence for significant structuring was noted between PWS and APKA. Lack of spatial genetic structuring could be due to the cumulative effects of low levels of gene flow over long time periods, low levels of gene flow by immature birds moving between marine habitats, or to episodic dispersal caused by habitat alteration (e.g. volcanic eruptions). Harlequin Ducks are likely to recolonize or enhance populations in areas recovering from environmental damage via emigration of birds from non-affected areas. Demographic studies suggest, however, that levels of movements are low, and that population recovery by emigration is a long-term process. JF - Auk AU - Lanctot, R AU - Goatcher, B AU - Scribner, K AU - Talbot, S AU - Pierson, B AU - Esler, D AU - Zwiefelhofer, D AD - Alaska Biological Science Center, U.S. Geological Survey, 1011 East Tudor Road, Anchorage, AL 99503, USA, richard_lanctot@usgs.gov Y1 - 1999/07// PY - 1999 DA - Jul 1999 SP - 781 EP - 791 VL - 116 IS - 3 SN - 0004-8038, 0004-8038 KW - Exxon Valdez KW - Harlequin duck KW - Histrionicus histrionicus KW - USA, Alaska KW - USA, Alaska, Prince William Sound KW - ASFA 1: Biological Sciences & Living Resources; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Genetics Abstracts; Ecology Abstracts; Pollution Abstracts KW - INE, USA, Alaska, Kodiak I. KW - Genetic diversity KW - Pollution effects KW - Genotypes KW - Environmental factors KW - Colonization KW - Population genetics KW - Breeding KW - Migratory species KW - Population levels KW - Oil pollution KW - INE, USA, Alaska, Alaska Peninsula KW - Seasonal variations KW - Oil spills KW - Marine KW - Marine birds KW - Overwintering KW - Habitat KW - Inheritance KW - Reproduction KW - INE, USA, Alaska, Alaska Gulf, Prince William Sound KW - Petroleum hydrocarbons KW - O 1070:Ecology/Community Studies KW - Q1 08443:Population genetics KW - D 04671:Birds KW - O 4020:Pollution - Organisms/Ecology/Toxicology KW - D 04803:Pollution effects KW - P 1000:MARINE POLLUTION KW - Q5 08504:Effects on organisms KW - G 07377:Birds KW - G 07290:Population genetics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17586958?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Auk&rft.atitle=Harlequin+duck+recovery+from+the+Exxon+Valdez+oil+spill%3A+A+population+genetics+perspective&rft.au=Lanctot%2C+R%3BGoatcher%2C+B%3BScribner%2C+K%3BTalbot%2C+S%3BPierson%2C+B%3BEsler%2C+D%3BZwiefelhofer%2C+D&rft.aulast=Lanctot&rft.aufirst=R&rft.date=1999-07-01&rft.volume=116&rft.issue=3&rft.spage=781&rft.isbn=&rft.btitle=&rft.title=Auk&rft.issn=00048038&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Population genetics; Colonization; Marine birds; Migratory species; Overwintering; Pollution effects; Genetic diversity; Oil pollution; Genotypes; Oil spills; Petroleum hydrocarbons; Breeding; Reproduction; Inheritance; Population levels; Habitat; Environmental factors; Seasonal variations; INE, USA, Alaska, Kodiak I.; INE, USA, Alaska, Alaska Peninsula; INE, USA, Alaska, Alaska Gulf, Prince William Sound; Marine ER - TY - JOUR T1 - Antibodies against Pasteurella multocida in snow geese in the western Arctic AN - 17585688; 4676783 AB - To determine if lesser snow geese (Chen caerulescens caerulescens) are a potential reservoir the Pasteurella multocida bacterium that causes avian cholera, serum samples and/or pharyngeal swabs were collected from >3,400 adult geese breeding on Wrangel Island (Russia) and Banks Island (Canada) during 1993-1996. Pharyngeal swab sampling rarely (>0.1%) detected birds that were exposed to P. multocida in these populations. Geese with serum antibody levels indicating recent infection with P. multocida were found at both breeding colonies. Prevalence of seropositive birds was 3.5% at Wrangel Island, an area that has no recorded history of avian cholera epizootics. Prevalence of seropositive birds was 2.8% at Banks Island in 1994, but increased to 8.2% during 1995 and 1996 when an estimated 40,000-60,000 snow geese were infected. Approximately 50% of the infected birds died during the epizootic and a portion of the surviving birds may have become carriers of the disease. This pattern of prevalence indicated that enzootic levels of infection with P. multocida occurred at both breeding colonies. When no avian cholera epizootics occurred, female snow geese (4.7%) had higher antibody prevalence than males (2.0%). JF - Journal of Wildlife Diseases AU - Samuel, MD AU - Shadduck, D J AU - Goldberg AU - Baranyuk, V AU - Sileo, L AU - Price, JI AD - U.S. Geological Survey, Biological Resources Division, National Wildlife Health Center, 6006 Schroeder Road, Madison, WI 53711, USA, michael_samuel@usgs.gov Y1 - 1999/07// PY - 1999 DA - Jul 1999 SP - 440 EP - 449 VL - 35 IS - 3 SN - 0090-3558, 0090-3558 KW - Lesser Snow Goose KW - Microbiology Abstracts B: Bacteriology; ASFA 1: Biological Sciences & Living Resources KW - Marine KW - PNW, Arctic KW - Immunology KW - Brackish KW - Pasteurella multocida KW - Epizootics KW - Avian physiology KW - Disease transmission KW - Chen caerulescans caerulescans KW - Antibodies KW - Infectious diseases KW - Disease reservoirs KW - Cholera KW - Chen caerulescens caerulescens KW - Aquatic birds KW - J 02862:Infection KW - Q1 08366:Physiology, biochemistry, biophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17585688?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Diseases&rft.atitle=Antibodies+against+Pasteurella+multocida+in+snow+geese+in+the+western+Arctic&rft.au=Samuel%2C+MD%3BShadduck%2C+D+J%3BGoldberg%3BBaranyuk%2C+V%3BSileo%2C+L%3BPrice%2C+JI&rft.aulast=Samuel&rft.aufirst=MD&rft.date=1999-07-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Biogeochemical+study+of+the+pinelands+in+Everglades+National+Park%2C+Florida&rft.title=Biogeochemical+study+of+the+pinelands+in+Everglades+National+Park%2C+Florida&rft.issn=01961497&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Antibodies; Infectious diseases; Immunology; Aquatic birds; Avian physiology; Disease transmission; Disease reservoirs; Cholera; Epizootics; Chen caerulescans caerulescans; Pasteurella multocida; Chen caerulescens caerulescens; PNW, Arctic; Marine; Brackish ER - TY - JOUR T1 - Does tree hardness influence nest-tree selection by primary cavity nesters? AN - 17476707; 4677082 AB - Cavity-nesting birds that excavate nest holes may be limited by the availability of suitable substrates for excavation. Suitability of trees for excavation may be influenced by substrate hardness and excavation strength of the bird. Excavation strength, in turn, may vary among bird species, causing nest-tree selection to vary among excavator species. We examined use of quaking aspens (Populus tremuloides) for nest trees as a function of tree hardness in four species of woodpeckers: Williamson's Sapsucker (Sphyrapicus thyroideus), Red-naped Sapsucker (S. nuchalis), Downy Woodpecker (Picoides pubescens), and Hairy Woodpecker (P. villosus). Hardness of trees was measured at 95 nest trees, 94 neighboring trees, and 150 random trees using a new technique described here. Other investigators have speculated that the gross external appearance of trees/snags can be used to estimate hardness. Hardness decreased from live trees to partly dead trees to dead trees and with increasing height in trees, but hardness was not related to other external features such as numbers of conks or percentage of the tree covered with bark. All four bird species chose nest trees that were softer than neighboring or random trees, and nest trees were softer at nests than at other heights measured. The four species selected trees of different hardness for nesting; Red-naped Sapsucker and Hairy Woodpecker chose harder trees than Williamson's Sapsucker and Downy Woodpecker. These results suggest that primary cavity nesters are sensitive to subtle characteristics of trees that reflect hardness, some of which may not be apparent in the external appearance of the trees. JF - Auk AU - Schepps, J AU - Lohr, S AU - Martin, TE AD - U.S.G.S. Biological Resources Division, Montana Cooperative Wildlife Research Unit, Avian Studies Program, University of Montana, Missoula, MT 59812, USA, tmartin@selway.umt.edu Y1 - 1999/07// PY - 1999 DA - Jul 1999 SP - 658 EP - 665 VL - 116 IS - 3 SN - 0004-8038, 0004-8038 KW - Quaking aspen KW - Sapsuckers KW - Pied woodpeckers KW - Ecology Abstracts KW - Site selection KW - Picoides KW - Substrate preferences KW - Breeding sites KW - Trees KW - Cavity nesters KW - Populus tremuloides KW - Sphyrapicus KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17476707?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Auk&rft.atitle=Does+tree+hardness+influence+nest-tree+selection+by+primary+cavity+nesters%3F&rft.au=Schepps%2C+J%3BLohr%2C+S%3BMartin%2C+TE&rft.aulast=Schepps&rft.aufirst=J&rft.date=1999-07-01&rft.volume=116&rft.issue=3&rft.spage=658&rft.isbn=&rft.btitle=&rft.title=Auk&rft.issn=00048038&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Populus tremuloides; Sphyrapicus; Picoides; Trees; Breeding sites; Cavity nesters; Site selection; Substrate preferences ER - TY - JOUR T1 - Winter prey selection by wolves and cougars in and near Glacier National Park, Montana AN - 17446535; 4658844 AB - Expansion by wolf (Canis lupus) populations in the western United States creates new opportunities and challenges for researching and managing large mammal predator-prey systems. Therefore, we compared patterns of prey selection between wolves and cougars (Puma concolor) to ascertain the effects of multiple predators on prey and on each other. Because of differences in hunting techniques, we predicted that wolves would kill more vulnerable classes of prey than cougars. Our results did not support this prediction. Whitetailed deer (Odocoileus virginianus) composed the greatest proportion of wolf (0.83) and cougar kills (0.87), but elk (Cervus elaphus) and moose (Alces alces) composed a larger proportion of wolf (0.14, 0.03, respectively) than cougar (0.06, 0.02, respectively) kills. Wolves and cougars selected older and younger deer and elk than did hunters. Cougars killed relatively more bull elk (0.74) than did wolves (0.48). Male deer killed by cougars had shorter diastema lengths than did male deer killed by wolves (P = 0.02). Pack hunting by wolves and dense stalking cover may have partially explained the failure to support predictions of the coursing versus stalking dichotomy. Wolves and cougars may be exhibiting exploitation and interference competition that is affecting each others' behavior and dynamics, and that of their prey. JF - Journal of Wildlife Management AU - Kunkel, KE AU - Ruth, T K AU - Pletscher, D H AU - Hornocker, M G AD - National Park Service, Alaska Regional Office, 2525 Gambell Street, Anchorage, AK 99503, USA, kyran_kunkel@nps.gov Y1 - 1999/07// PY - 1999 DA - Jul 1999 VL - 63 IS - 3 SN - 0022-541X, 0022-541X KW - Ecology Abstracts KW - Wildlife management KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17446535?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Wiig%2C+Stephen+V%3BGrundy%2C+W+D%3BDyni%2C+John+R&rft.aulast=Wiig&rft.aufirst=Stephen&rft.date=1995-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Trona+resources+in+the+Green+River+basin%2C+Southwest+Wyoming&rft.title=Trona+resources+in+the+Green+River+basin%2C+Southwest+Wyoming&rft.issn=01961497&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Wildlife management ER - TY - JOUR T1 - Modeling pattern in collections of parameters AN - 17440589; 4658857 AB - Wildlife management is increasingly guided by analyses of large and complex datasets. The description of such datasets often requires a large number of parameters, among which certain patterns might be discernible. For example, one may consider a long-term study producing estimates of annual survival rates; of interest is the question whether these rates have declined through time. Several statistical methods exist for examining pattern in collections of parameters. Here, I argue for the superiority of "random effects models" in which parameters are regarded as random variables, with distributions governed by "hyperparameters" describing the patterns of interest. Unfortunately, implementation of random effects models is sometimes difficult. Ultrastructural models, in which the postulated pattern is built into the parameter structure of the original data analysis, are approximations to random effects models. However, this approximation is not completely satisfactory: failure to account for natural variation among parameters can lead to overstatement of the evidence for pattern among parameters. I describe quasi-likelihood methods that can be used to improve the approximation of random effects models by ultrastructural models. JF - Journal of Wildlife Management AU - Link, WA AD - U.S. Geological Survey, Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, MD 20708, USA, william_link@usgs.gov Y1 - 1999/07// PY - 1999 DA - Jul 1999 VL - 63 IS - 3 SN - 0022-541X, 0022-541X KW - Ecology Abstracts KW - Wildlife management KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17440589?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Management&rft.atitle=Modeling+pattern+in+collections+of+parameters&rft.au=Link%2C+WA&rft.aulast=Link&rft.aufirst=WA&rft.date=1999-07-01&rft.volume=63&rft.issue=3&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Management&rft.issn=0022541X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Wildlife management ER - TY - JOUR T1 - Reproductive Biology and Juvenile Recruitment of the Shinyrayed Pocketbook, Lampsilis subangulata (Bivalvia: Unionidae) in the Gulf Coastal Plain AN - 17372922; 4590766 AB - The reproductive biology, glochidial morphology and recruitment of the federally endangered shinyrayed pocketbook, Lampsilis subangulata, were studied from May 1995 to July 1996 in the Flint River system, Georgia. Gravid female L. subangulata were found nine months of the year. On 19 May 1995, a L. subangulata was discovered releasing a superconglutinate, the first record confirming that this species used this specialized reproductive strategy. Superconglutinate release occurred from late May to mid-July in water temperatures ranging from 20.0 to 23.5 C. Laboratory experiments indicated that two fish species served as primary hosts, the spotted bass (Micropterus punctulatus) and largemouth bass (M. salmoides). Secondary host fish included the eastern mosquitofish (Gambusia holbrooki), guppy (Poecilia reticulata) and bluegill (Lepomis macrochirus). The glochidial morphology of L. subangulata was similar to other lampsiline species. Using quantitative survey methods, no evidence of recent juvenile recruitment was found in the largest known extant L. subangulata population. JF - American Midland Naturalist AU - O'Brien, CA AU - Box, J B AD - Florida Caribbean Science Center, United States Geological Survey, 7920 NW 71st St., Gainesville 32653, USA Y1 - 1999/07// PY - 1999 DA - Jul 1999 SP - 129 EP - 140 VL - 142 IS - 1 SN - 0003-0031, 0003-0031 KW - Shiny-rayed pocketbook KW - USA, Georgia KW - larvae KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Lampsilis subangulata KW - Recruitment KW - Developmental stages KW - Rare species KW - Hosts KW - Freshwater KW - USA, Georgia, Flint R. KW - Freshwater molluscs KW - Life history KW - Endangered species KW - Reproduction KW - D 04658:Molluscs KW - Q1 08442:Population dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17372922?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Midland+Naturalist&rft.atitle=Reproductive+Biology+and+Juvenile+Recruitment+of+the+Shinyrayed+Pocketbook%2C+Lampsilis+subangulata+%28Bivalvia%3A+Unionidae%29+in+the+Gulf+Coastal+Plain&rft.au=O%27Brien%2C+CA%3BBox%2C+J+B&rft.aulast=O%27Brien&rft.aufirst=CA&rft.date=1999-07-01&rft.volume=142&rft.issue=1&rft.spage=129&rft.isbn=&rft.btitle=&rft.title=American+Midland+Naturalist&rft.issn=00030031&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Freshwater molluscs; Life history; Recruitment; Developmental stages; Hosts; Rare species; Endangered species; Reproduction; Lampsilis subangulata; USA, Georgia, Flint R.; Freshwater ER - TY - JOUR T1 - Effects of Saline Environments on the Survival of Wild Goslings (Branta canadensis) AN - 17369769; 4590771 AB - Research on ducklings and goslings has demonstrated that young birds hatched in moderate to high saline environments without access to fresh drinking water grow and develop slower, and have increased mortality rates. Most direct saline-induced mortality happens before day 6 of life, after which time the nasal salt glands become functional. At Fish Springs National Wildlife Refuge in western Utah, the water available to Canada goose (Branta canadensis) goslings ranged from brackish to highly saline (3100-25,000+ mu S/cm) throughout the summer and differed spatially across the impoundments; no fresh water was available. We followed collar-marked, radio-marked and unmarked broods from hatching to day 15 to determine early survival of all goslings hatched in 1997. Nineteen broods hatched between 25 April and 25 May. We analyzed the relationship between specific conductivity of water and gosling mortality in 1997. The levels of salinity found at the refuge within 15 d after hatching were independent of mortality. During dry years salinity levels increase earlier in the Spring and may limit gosling productivity. JF - American Midland Naturalist AU - Stolley, D S AU - Bissonette, JA AU - Kadlec, JA AD - Utah Cooperative Fish and Wildlife Research Unit (USGS-BRD), Department of Fisheries and Wildlife, Utah State University, Logan 84322, USA, fajohn@cc.usu.edu Y1 - 1999/07// PY - 1999 DA - Jul 1999 SP - 181 EP - 190 VL - 142 IS - 1 SN - 0003-0031, 0003-0031 KW - Canada goose KW - USA, Utah KW - juveniles KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Mortality KW - Recruitment KW - Brackish KW - Survival KW - Salinity tolerance KW - Freshwater KW - Water availability KW - Osmoregulation KW - Growth KW - Branta canadensis KW - Salinity effects KW - Mortality causes KW - D 04671:Birds KW - Q1 08422:Environmental effects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17369769?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Midland+Naturalist&rft.atitle=Effects+of+Saline+Environments+on+the+Survival+of+Wild+Goslings+%28Branta+canadensis%29&rft.au=Stolley%2C+D+S%3BBissonette%2C+JA%3BKadlec%2C+JA&rft.aulast=Stolley&rft.aufirst=D&rft.date=1999-07-01&rft.volume=142&rft.issue=1&rft.spage=181&rft.isbn=&rft.btitle=&rft.title=American+Midland+Naturalist&rft.issn=00030031&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Recruitment; Survival; Salinity tolerance; Mortality causes; Osmoregulation; Mortality; Growth; Salinity effects; Water availability; Branta canadensis; Brackish; Freshwater ER - TY - JOUR T1 - In situ detection of the Clostridium botulinum type C sub(1) toxin gene in wetland sediments with a nested PCR assay AN - 17369757; 4567998 AB - A nested PCR was developed for detection of the Clostridium botulinum type C sub(1) toxin gene in sediments collected from wetlands where avian botulism outbreaks had or had not occurred. The C sub(1) toxin gene was detected in 16 of 18 sites, demonstrating both the ubiquitous distribution of C. botulinum type C in wetland sediments and the sensitivity of the detection assay. JF - Applied and Environmental Microbiology AU - Williamson, J L AU - Rocke, TE AU - Aiken, J M AD - U.S. Geological Survey, Biological Resources Division, National Wildlife Health Center, 6006 Schroeder Rd., Madison, WI 53711, USA, Judy_Williamson@usgs.gov Y1 - 1999/07// PY - 1999 DA - Jul 1999 SP - 3240 EP - 3243 VL - 65 IS - 7 SN - 0099-2240, 0099-2240 KW - C1 toxin KW - Clostridium botulinum KW - PCR KW - double prime C1 toxin KW - botulism KW - polymerase chain reaction KW - Pollution Abstracts; Microbiology Abstracts B: Bacteriology; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; ASFA Marine Biotechnology Abstracts; Genetics Abstracts; Water Resources Abstracts KW - Aquatic bacteria KW - Microbial contamination KW - Sediment analysis KW - Assay KW - Polymerase chain reaction KW - Wetlands KW - Sediment pollution KW - Pathogenic bacteria KW - Botulism KW - Wildlife KW - Poisoning KW - Assays KW - Toxins KW - Sediments KW - Aves KW - Mortality causes KW - Aquatic birds KW - Aquatic Bacteria KW - Q5 08523:Conservation, wildlife management and recreation KW - SW 5010:Network design KW - G 07320:Bacterial genetics KW - P 2000:FRESHWATER POLLUTION KW - Q1 08484:Species interactions: parasites and diseases KW - Q4 27160:Methods and instruments KW - J 02740:Genetics and evolution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17369757?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=LakeLine&rft.atitle=Remote+sensing%2C+GIS+for+resource+management&rft.au=Salas%2C+DE%3BPucherelli%2C+MJ&rft.aulast=Salas&rft.aufirst=DE&rft.date=1995-01-01&rft.volume=15&rft.issue=4&rft.spage=6&rft.isbn=&rft.btitle=&rft.title=LakeLine&rft.issn=07437978&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Pathogenic bacteria; Wetlands; Microbial contamination; Aquatic birds; Mortality causes; Sediment analysis; Aquatic bacteria; Botulism; Polymerase chain reaction; Sediments; Toxins; Aves; Sediment pollution; Wildlife; Poisoning; Assays; Assay; Aquatic Bacteria ER - TY - JOUR T1 - Hydrocarbon gases associated with permafrost in the Mackenzie Delta, Northwest Territories, Canada AN - 17363942; 4533414 AB - Molecular and isotopic analyses of core gas samples from 3 permafrost research core holes (92GSCTAGLU, 92GSCKUMAK, 92GSCUNIPKAT; sample core depths ranging from 0.36 to 413.82 m) in the Mackenzie Delta of the Northwest Territories of Canada reveal the presence of hydrocarbon gases from both microbial and thermogenic sources. Analyses of most headspace and blended gas samples from the ice-bonded permafrost portion of the core holes yielded C sub(1)/(C sub(2) + C sub(3)) hydrocarbon gas ratios and CH sub(4)-C isotopic compositions ( delta super(13)C CH sub(4)) indicative of microbially sourced CH sub(4) gas. However, near the base of ice-bonded permafrost and into the underlying non-frozen stratigraphic section, an increase in ethane (C sub(2)) concentrations, decreases in C sub(1)/(C sub(2) + C sub(3)) hydrocarbon gas ratios, and CH sub(4)-C isotopic ( delta super(13)C CH sub(4)) data indicate the presence of hydrocarbon gases derived from a thermogenic source. The thermogenic gas below permafrost in the Mackenzie Delta likely migrated from deeper hydrocarbon accumulations and/or directly from thermally mature hydrocarbon source rocks. JF - Applied Geochemistry AU - Collett, T S AU - Dallimore AD - U.S. Geological Survey, Denver Federal Center, Box 25046, MS-939, Denver, CO 80225, USA, tcollett@usgs.gov Y1 - 1999/07// PY - 1999 DA - Jul 1999 SP - 607 EP - 620 VL - 14 IS - 5 SN - 0883-2927, 0883-2927 KW - Canada, Northwest Terr., Mackenzie Delta KW - permafrost KW - Pollution Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Methane KW - Hydrocarbons KW - Geochemistry KW - Permafrost KW - Isotope Studies KW - Deltas KW - Migration KW - Gases KW - Cores KW - Rocks KW - Canada, Northwest Terr., Mackenzie District, Mackenzie Delta KW - P 0000:AIR POLLUTION KW - Q2 09187:Geochemistry of sediments KW - SW 0820:Snow, ice and frost UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17363942?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Applied+Geochemistry&rft.atitle=Hydrocarbon+gases+associated+with+permafrost+in+the+Mackenzie+Delta%2C+Northwest+Territories%2C+Canada&rft.au=Collett%2C+T+S%3BDallimore&rft.aulast=Collett&rft.aufirst=T&rft.date=1999-07-01&rft.volume=14&rft.issue=5&rft.spage=607&rft.isbn=&rft.btitle=&rft.title=Applied+Geochemistry&rft.issn=08832927&rft_id=info:doi/10.1016%2FS0883-2927%2898%2900087-0 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Methane; Gases; Rocks; Cores; Hydrocarbons; Geochemistry; Permafrost; Deltas; Isotope Studies; Migration; Canada, Northwest Terr., Mackenzie District, Mackenzie Delta DO - http://dx.doi.org/10.1016/S0883-2927(98)00087-0 ER - TY - JOUR T1 - MOAB: a spatially explicit, individual-based expert system for creating animal foraging models AN - 17272547; 4587038 AB - We describe the development, structure, and corroboration process of a simulation model of animal behavior (MOAB). MOAB can create spatially explicit, individual-based animal foraging models. Users can create or replicate heterogeneous landscape patterns, and place resources and individual animals of a given species on that landscape to simultaneously simulate the foraging behavior of multiple species. The heuristic rules for animal behavior are maintained in a user-modifiable expert system. MOAB can be used to explore hypotheses concerning the influence of landscape pattern on animal movement and foraging behavior. A red fox (Vulpes vulpes L.) foraging and nest predation model was created to test MOAB's capabilities. Foxes were simulated for 30-day periods using both expert system and random movement rules. Home range size, territory formation and other measures of movement were compared to data from field studies, the random movement simulations, and other available simulation studies. A striped skunk (Mephitis mephitis L.) model also was developed. The expert system model proved superior to stochastic in respect to territory formation, general movement patterns and home range size. JF - Ecological Modelling AU - Carter, J AU - Finn, J T AD - USGS-National Wetlands Research Center, 700 Cajundome Boulevard, Lafayette, LA 70506, USA, jacoby_carter@usgs.gov Y1 - 1999/07/01/ PY - 1999 DA - 1999 Jul 01 SP - 29 EP - 41 VL - 119 IS - 1 SN - 0304-3800, 0304-3800 KW - Ecology Abstracts KW - Models KW - D 04003:Modeling, mathematics, computer applications UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17272547?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Modelling&rft.atitle=MOAB%3A+a+spatially+explicit%2C+individual-based+expert+system+for+creating+animal+foraging+models&rft.au=Carter%2C+J%3BFinn%2C+J+T&rft.aulast=Carter&rft.aufirst=J&rft.date=1999-07-01&rft.volume=119&rft.issue=1&rft.spage=29&rft.isbn=&rft.btitle=&rft.title=Ecological+Modelling&rft.issn=03043800&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Models ER - TY - JOUR T1 - Influence of prerelease experience on reintroduced black-footed ferrets (Mustela nigripes) AN - 17214374; 4505975 AB - Captive breeding is increasingly being used to create supplies of endangered animals for release into natural habitats, but rearing strategies vary and debates arise over which methods are most efficient. We assessed postrelease behaviors and survival of three groups of black-footed ferrets, each with different prerelease experience. Eighteen ferret kits less than or equal to 60 days of age were moved with their dams from cages to 80-m super(2) outdoor pens with prairie dog burrows. These animals were compared to animals reared in standard cages (n = 72), some of which were given experience killing prairie dogs (n = 32). Ferrets were released onto white-tailed prairie dog (Cynomys leucurus) colonies in Wyoming, USA, in fall, 1992. Radio-tagged cage-reared ferrets made longer nightly moves and dispersed further from release sites than their pen-reared counterparts. The band return rate was 4-fold higher for pen-reared animals than for cage-reared animals during surveys conducted about 1 month after release. We recommend routine use of quasi-natural outdoor pens for prerelease conditioning of black-footed ferrets. JF - Biological Conservation AU - Biggins, DE AU - Vargas, A AU - Godbey, J L AU - Anderson, SH AD - U.S. Geological Survey, Midcontinent Ecological Science Center, 4512 McMurry Avenue, Fort Collins, CO 80525, USA, dean-biggins@usgs.gov Y1 - 1999/07// PY - 1999 DA - Jul 1999 SP - 121 EP - 129 VL - 89 IS - 2 SN - 0006-3207, 0006-3207 KW - Black-footed ferret KW - USA, Wyoming KW - White-tailed prairie dog KW - Ecology Abstracts KW - Reintroduction KW - Cynomys leucurus KW - Endangered species KW - Conservation KW - Captive breeding KW - Mustela nigripes KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17214374?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biological+Conservation&rft.atitle=Influence+of+prerelease+experience+on+reintroduced+black-footed+ferrets+%28Mustela+nigripes%29&rft.au=Biggins%2C+DE%3BVargas%2C+A%3BGodbey%2C+J+L%3BAnderson%2C+SH&rft.aulast=Biggins&rft.aufirst=DE&rft.date=1999-07-01&rft.volume=89&rft.issue=2&rft.spage=121&rft.isbn=&rft.btitle=&rft.title=Biological+Conservation&rft.issn=00063207&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Cynomys leucurus; Mustela nigripes; Conservation; Captive breeding; Endangered species; Reintroduction ER - TY - JOUR T1 - Variations in trace element geochemistry in the Seine River Basin based on floodplain deposits and bed sediments AN - 17361138; 4570164 AB - Between 1990 and 1995 a series of bed sediment, suspended sediment and fresh floodplain samples were collected within the Seine River Basin, in France, to evaluate variations in trace element geochemistry. Average background trace element levels for the basin were determined from the collection and subsequent analyses of bed sediment samples from small rural watersheds and from a prehistoric (5000 BP) site in Paris. Concentrations are relatively low, and similar to those observed for fine-grained bed sediments from unaffected areas in the United States and Canada. However, the concentrations are somewhat higher than the reference levels presently adopted by French water authorities for areas north of the Seine Basin, which have similar bedrock lithologies. Downstream trace element variations were monitored in 1994 and 1995 using fresh surficial floodplain samples that were collected either as dried deposits a few days after peak discharge, or immediately after peak discharge (under less than or equal to 30 cm of water). Chemical comparisons between fresh floodplain deposits, and actual suspended sediments collected during flood events, indicate that, with some caveats, the former can be used as surrogates for the latter. The floodplain sediment chemical data indicate that within the Seine Basin, from the relatively unaffected headwaters through heavily affected urban streams, trace element concentrations vary by as much as three orders of magnitude. These trace element changes appear to be the result of both increases in population as well as concomitant increases in industrial activity. JF - Hydrological Processes AU - Horowitz, A J AU - Meybeck, M AU - Idlafkih, Z AU - Biger, E AD - US Geological Survey, Water Resources Division, Peachtree Business Center, Suite 130, 3039 Amwiler Road, Atlanta, GA 30360-2824, USA, horowitz@usgs.gov Y1 - 1999/06/30/ PY - 1999 DA - 1999 Jun 30 SP - 1329 EP - 1340 PB - John Wiley & Sons, Ltd. VL - 13 IS - 9 SN - 0885-6087, 0885-6087 KW - France, Seine R. KW - Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Rivers KW - Sediment chemistry KW - Suspended Sediments KW - Geochemistry KW - Sediment KW - Trace Elements KW - Freshwater KW - Watersheds KW - Trace elements KW - Flood Plains KW - Flood plains KW - Catchment areas KW - Floodplains KW - Geology KW - Sedimentation KW - Bedrock KW - Bed KW - AQ 00001:Water Resources and Supplies KW - Q2 09184:Composition of water KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17361138?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrological+Processes&rft.atitle=Variations+in+trace+element+geochemistry+in+the+Seine+River+Basin+based+on+floodplain+deposits+and+bed+sediments&rft.au=Horowitz%2C+A+J%3BMeybeck%2C+M%3BIdlafkih%2C+Z%3BBiger%2C+E&rft.aulast=Horowitz&rft.aufirst=A&rft.date=1999-06-30&rft.volume=13&rft.issue=9&rft.spage=1329&rft.isbn=&rft.btitle=&rft.title=Hydrological+Processes&rft.issn=08856087&rft_id=info:doi/10.1002%2F%28SICI%291099-1085%2819990630%2913%3A93.3.CO%3B2-8 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Rivers; Sediment chemistry; Flood plains; Geochemistry; Sedimentation; Trace elements; Catchment areas; Sediment; Geology; Floodplains; Bed; Flood Plains; Suspended Sediments; Trace Elements; Watersheds; Bedrock; Freshwater DO - http://dx.doi.org/10.1002/(SICI)1099-1085(19990630)13:9<1329::AID-HYP811>3.3.CO;2-8 ER - TY - JOUR T1 - Correlation of Soil and Sediment Organic Matter Polarity to Aqueous Sorption of Nonionic Compounds AN - 17371188; 4593974 AB - Polarities of the soil/sediment organic matter (SOM) in 19 soil and 9 freshwater sediment samples were determined from solid-state super(13)C-CP/MAS NMR spectra and compared with published partition coefficients (K sub(oc)) of carbon tetrachloride (CT) from aqueous solution. Nondestructive analysis of whole samples by solid-state NMR permits a direct assessment of the polarity of SOM that is not possible by elemental analysis. The percent of organic carbon associated with polar functional groups was estimated from the combined fraction of carbohydrate and carboxylamide-ester carbons. A plot of the measured partition coefficients (K sub(oc)) of carbon tetrachloride (CT) vs. percent polar organic carbon (POC) shows distinctly different populations of soils and sediments as well as a roughly inverse trend among the soil/sediment populations. Plots of K sub(oc) values for CT against other structural group carbon fractions did not yield distinct populations. The results indicate that the polarity of SOM is a significant factor in accounting for differences in K sub(oc) between the organic matter in soils and sediments. The alternate direct correlation of the sum of aliphatic and aromatic structural carbons with K sub(oc) illustrates the influence of nonpolar hydrocarbon on solute partition interaction. Additional elemental analysis data of selected samples further substantiate the effect of the organic matter polarity on the partition efficiency of nonpolar solutes. The separation between soil and sediment samples based on percent POC reflects definite differences of the properties of soil and sediment organic matters that are attributable to diagenesis. JF - Environmental Science & Technology AU - Kile, DE AU - Wershaw, R L AU - Chiou, C T AD - U.S. Geological Survey, 3215 Marine Street, Boulder, CO 80303, USA, dekile@usgs.gov Y1 - 1999/06/15/ PY - 1999 DA - 1999 Jun 15 SP - 2053 EP - 2056 VL - 33 IS - 12 SN - 0013-936X, 0013-936X KW - carbon tetrachloride KW - polarity KW - sorption KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - Marine KW - Sorption KW - Sediment pollution KW - Hydrocarbons KW - Organic matter KW - Nuclear Magnetic Resonance KW - Physicochemical properties KW - Brackish KW - Freshwater KW - Soil Organic Matter KW - Sediments KW - Soil KW - Solutes KW - Carbon KW - Correlation Analysis KW - Polarity KW - Soil Properties KW - Diagenesis KW - Petroleum hydrocarbons KW - Q5 08503:Characteristics, behavior and fate KW - SW 0880:Chemical processes KW - P 9000:ENVIRONMENTAL ACTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17371188?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Correlation+of+Soil+and+Sediment+Organic+Matter+Polarity+to+Aqueous+Sorption+of+Nonionic+Compounds&rft.au=Kile%2C+DE%3BWershaw%2C+R+L%3BChiou%2C+C+T&rft.aulast=Kile&rft.aufirst=DE&rft.date=1999-06-15&rft.volume=33&rft.issue=12&rft.spage=2053&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes980816o LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Sediment pollution; Organic matter; Petroleum hydrocarbons; Diagenesis; Soil; Sorption; Physicochemical properties; Sediments; Solutes; Carbon; Hydrocarbons; Nuclear Magnetic Resonance; Correlation Analysis; Polarity; Soil Properties; Soil Organic Matter; Marine; Brackish; Freshwater DO - http://dx.doi.org/10.1021/es980816o ER - TY - JOUR T1 - Reexamining fire suppression impacts on brushland fire regimes AN - 17245954; 4537538 AB - California shrubland wildfires are increasingly destructive, and it is widely held that the problem has been intensified by fire suppression, leading to larger more intense wildfires. However, analysis of the California Statewide Fire History Database shows that, since 1910, fire frequency and area burned have not declined, and fire size has not increased. Fire rotation intervals have declined, and fire season has not changed, implying that fire intensity has not increased. Fire frequency and population density were correlated, and it is suggested that fire suppression plays a critical role in offsetting potential impacts of increased ignitions. Large fires were not dependent on old age classes of fuels, and it is thus unlikely that age class manipulation of fuels can prevent large fires. Expansion of the urban-wildland interface is a key factor in wildland fire destruction. JF - Science (Washington) AU - Keeley, JE AU - Fotheringham, C J AU - Morais, M AD - US Geol. Surv. Biol. Resour. Div., Western Ecol. Res. Cent., Sequoia-Kings Canyon Field Stn., 47050 Generals Highw., Three Rivers, CA 93271-9651, USA, jon_keeley@usgs.gov Y1 - 1999/06/11/ PY - 1999 DA - 1999 Jun 11 SP - 1829 EP - 1832 PB - American Association for the Advancement of Science VL - 284 IS - 5421 SN - 0036-8075, 0036-8075 KW - USA, California KW - shrublands KW - wildfire KW - Ecology Abstracts; Health & Safety Science Abstracts KW - Fires KW - Population density KW - H 7000:Fire Safety KW - D 04710:Control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17245954?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science+%28Washington%29&rft.atitle=Reexamining+fire+suppression+impacts+on+brushland+fire+regimes&rft.au=Keeley%2C+JE%3BFotheringham%2C+C+J%3BMorais%2C+M&rft.aulast=Keeley&rft.aufirst=JE&rft.date=1999-06-11&rft.volume=284&rft.issue=5421&rft.spage=1829&rft.isbn=&rft.btitle=&rft.title=Science+%28Washington%29&rft.issn=00368075&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Population density; Fires ER - TY - JOUR T1 - Variations in water clarity and bottom albedo in Florida Bay from 1985 to 1997 AN - 968178909; 16466942 AB - Following extensive seagrass die-offs of the late 1980s and early 1990s, Florida Bay reportedly had significant declines in water clarity due to turbidity and algal blooms. Scant information exists on the extent of the decline, as this bay was not investigated for water quality concerns before the die-offs and limited areas were sampled after the primary die-off. We use imagery from the Advanced Very High Resolution Radiometer (AVHRR) to examine water clarity in Florida Bay for the period 1985 to 1997. The AVHRR provides data on nominal water reflectance and estimated light attenuation, which are used here to describe turbidity conditions in the bay on a seasonal basis. In situ observations on changes in seagrass abundance within the bay, combined with the satellite data, provide additional insights into losses of seagrass. The imagery shows an extensive region to the west of Florida Bay having increased reflectance and light attenuation in both winter and summer begining in winter of 1988. These increases are consistent with a change from dense seagrass to sparse or negligible cover. Approximately 200 km super(2) of these offshore seagrasses may have been lost during the primary die-off (1988 through 1991), significantly more than in the bay. The imagery shows the distribution and timing of increased turbidity that followed the die-offs in the northwestern regions of the bay, exemplified in Rankin Lake and Johnson Key Basin, and indicates that about 200 km super(2) of dense seagrass may have been lost or severely degraded within the bay from the start of the die-off. The decline in water clarity has continued in the northwestern bay since 1991. The area west of the Everglades National Park boundaries has shown decreases in both winter turbidity and summer reflectances, suggestive of partial seagrass recovery. Areas of low reflectance associated with a majorSyringodium filiforme seagrass meadow north of Marathon (Vaca Key, in the Florida Keys) appear to have expanded westward toward Big Pine Key, indicating changes in the bottom cover from before the die-off. The southern and eastern sections of the Bay have not shown significant changes in water clarity or bottom albedo throughout the entire time period. JF - Estuaries AU - Stumpf, R P AU - Frayer, M L AU - Durako, MJ AU - Brock, J C AD - Center for Coastal Geology, United States Geological Survey, 600 Fourth Street South, 33701, St. Petersburg, Florida, Richard.Stumpf@noaa.gov Y1 - 1999/06// PY - 1999 DA - Jun 1999 SP - 431 EP - 444 PB - Estuarine Research Federation, 490 Chippingwood Dr. Port Republic MD 20676-2140 United States VL - 22 IS - 2 SN - 0160-8347, 0160-8347 KW - Water Resources Abstracts; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources KW - Timing KW - Remote Sensing KW - Marine KW - Algal blooms KW - Reflectance KW - Sea Grasses KW - Albedo KW - USA, Florida, Everglades Natl. Park KW - Phytoplankton KW - Light attenuation KW - Water quality KW - USA, Florida, Florida Keys, Big Pine Key KW - Radiometers KW - Meadows KW - Boundaries KW - ASW, USA, Florida, Florida Keys KW - Sea grass KW - Lake Basins KW - ASW, USA, Florida, Florida Bay KW - Turbidity KW - SW 3040:Wastewater treatment processes KW - Q5 08502:Methods and instruments KW - Q1 08481:Productivity KW - O 4060:Pollution - Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/968178909?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Estuaries&rft.atitle=Variations+in+water+clarity+and+bottom+albedo+in+Florida+Bay+from+1985+to+1997&rft.au=Stumpf%2C+R+P%3BFrayer%2C+M+L%3BDurako%2C+MJ%3BBrock%2C+J+C&rft.aulast=Stumpf&rft.aufirst=R&rft.date=1999-06-01&rft.volume=22&rft.issue=2&rft.spage=431&rft.isbn=&rft.btitle=&rft.title=Estuaries&rft.issn=01608347&rft_id=info:doi/10.2307%2F1353209 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2012-04-01 N1 - Last updated - 2014-12-24 N1 - SubjectsTermNotLitGenreText - Radiometers; Algal blooms; Reflectance; Albedo; Phytoplankton; Sea grass; Light attenuation; Water quality; Turbidity; Remote Sensing; Timing; Sea Grasses; Meadows; Boundaries; Lake Basins; USA, Florida, Florida Keys, Big Pine Key; USA, Florida, Everglades Natl. Park; ASW, USA, Florida, Florida Keys; ASW, USA, Florida, Florida Bay; Marine DO - http://dx.doi.org/10.2307/1353209 ER - TY - JOUR T1 - Distinguishing Grenvillian basement from pre-Taconian cover rocks in the Northern Appalachians AN - 52412348; 2000-003161 AB - SHRIMP and Pb evaporation ages of detrital zircons from a quartzite layer in Cavendish Gorge near the suggested intrusive contact with a 1420 m.y. tonalite all yield results less than 1420 m.y. Thus, the metasedimentary units of the Cavendish formation should not be assigned to the Mount Holly complex; they are best correlated with the Cambrian Tyson and Hoosac formations. JF - American Journal of Science AU - Karabinos, Paul AU - Aleinikoff, John N AU - Fanning, C Mark Y1 - 1999/06// PY - 1999 DA - June 1999 SP - 502 EP - 515 PB - Kline Geology Laboratory, Yale University, New Haven, CT VL - 299 IS - 6 SN - 0002-9599, 0002-9599 KW - United States KW - silicates KW - Cavendish Formation KW - upper Precambrian KW - U/Pb KW - ion probe data KW - Cavendish Gorge KW - mass spectra KW - Appalachians KW - detritus KW - Hoosac Formation KW - Windsor County Vermont KW - dates KW - metamorphic rocks KW - orthosilicates KW - metasedimentary rocks KW - absolute age KW - spectra KW - Neoproterozoic KW - zircon group KW - sedimentary cover KW - Pb/Pb KW - North America KW - Precambrian KW - basement KW - zircon KW - Proterozoic KW - correlation KW - Tyson Formation KW - Vermont KW - nesosilicates KW - Grenvillian Orogeny KW - SHRIMP data KW - classification KW - Northern Appalachians KW - SEM data KW - 03:Geochronology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52412348?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=American+Journal+of+Science&rft.atitle=Distinguishing+Grenvillian+basement+from+pre-Taconian+cover+rocks+in+the+Northern+Appalachians&rft.au=Karabinos%2C+Paul%3BAleinikoff%2C+John+N%3BFanning%2C+C+Mark&rft.aulast=Karabinos&rft.aufirst=Paul&rft.date=1999-06-01&rft.volume=299&rft.issue=6&rft.spage=502&rft.isbn=&rft.btitle=&rft.title=American+Journal+of+Science&rft.issn=00029599&rft_id=info:doi/ L2 - http://www.ajsonline.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom N1 - Date revised - 2000-01-01 N1 - Number of references - 39 N1 - PubXState - CT N1 - Document feature - illus. incl. 2 tables, geol. sketch map N1 - Last updated - 2012-06-15 N1 - CODEN - AJSCAP N1 - SubjectsTermNotLitGenreText - absolute age; Appalachians; basement; Cavendish Formation; Cavendish Gorge; classification; correlation; dates; detritus; Grenvillian Orogeny; Hoosac Formation; ion probe data; mass spectra; metamorphic rocks; metasedimentary rocks; Neoproterozoic; nesosilicates; North America; Northern Appalachians; orthosilicates; Pb/Pb; Precambrian; Proterozoic; sedimentary cover; SEM data; SHRIMP data; silicates; spectra; Tyson Formation; U/Pb; United States; upper Precambrian; Vermont; Windsor County Vermont; zircon; zircon group ER - TY - JOUR T1 - Journal of Geotechnical and Geoenvironmental Engineering AN - 52384901; 2000-022178 JF - Journal of Geotechnical and Geoenvironmental Engineering AU - Silvestri, V AU - Chugh, Ashok K AU - Phatak, D R Y1 - 1999/06// PY - 1999 DA - June 1999 SP - 563 EP - 538 PB - American Society of Civil Engineers, New York, NY VL - 125 IS - 6 SN - 1090-0241, 1090-0241 KW - backfill KW - shear strength KW - retaining walls KW - pressure KW - earth pressure KW - cohesive materials KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52384901?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Educational+Psychologist&rft.atitle=Positive+psychology+and+positive+education%3A+Old+wine+in+new+bottles%3F&rft.au=Kristj%C3%A1nsson%2C+Kristj%C3%A1n&rft.aulast=Kristj%C3%A1nsson&rft.aufirst=Kristj%C3%A1n&rft.date=2012-04-01&rft.volume=47&rft.issue=2&rft.spage=86&rft.isbn=&rft.btitle=&rft.title=Guidebook+-+Wyoming+Geological+Association&rft.issn=01602829&rft_id=info:doi/ L2 - http://scitation.aip.org/gto LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Number of references - 8 N1 - PubXState - NY N1 - Document feature - illus. incl. 1 table N1 - SuppNotes - For reference to original see Mazindrani, Z. H. and Ganjali, M. H., J. Geotech. and Geoenviron. Eng., Am. Soc. Civ. Eng., Vol. 123, No. 2, p. 110-112, Feb. 1997 N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - backfill; cohesive materials; earth pressure; pressure; retaining walls; shear strength ER - TY - JOUR T1 - US policy instruments to protect coal-bearing fragile lands AN - 52361267; 2000-034655 JF - Resources Policy AU - Watson, William D AU - Lin, King AU - Browne, Thomas Y1 - 1999/06// PY - 1999 DA - June 1999 SP - 125 EP - 140 PB - IPC Science and Technology Press, Guildford VL - 25 IS - 2 SN - 0301-4207, 0301-4207 KW - United States KW - mining KW - sedimentary rocks KW - coal KW - regulations KW - reclamation KW - public policy KW - legislation KW - efficiency KW - cost KW - land use KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52361267?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Resources+Policy&rft.atitle=US+policy+instruments+to+protect+coal-bearing+fragile+lands&rft.au=Watson%2C+William+D%3BLin%2C+King%3BBrowne%2C+Thomas&rft.aulast=Watson&rft.aufirst=William&rft.date=1999-06-01&rft.volume=25&rft.issue=2&rft.spage=125&rft.isbn=&rft.btitle=&rft.title=Resources+Policy&rft.issn=03014207&rft_id=info:doi/ L2 - http://www.sciencedirect.com/science/journal/03014207 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Number of references - 21 N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2012-06-07 N1 - CODEN - RSPCAM N1 - SubjectsTermNotLitGenreText - coal; cost; efficiency; land use; legislation; mining; public policy; reclamation; regulations; sedimentary rocks; United States ER - TY - JOUR T1 - Contaminated vadose zone characterization using partitioning gas tracers AN - 52215897; 2001-048778 JF - Journal of Environmental Engineering AU - Whitley, G Allen, Jr AU - McKinney, Daene C AU - Pope, Gary A AU - Rouse, Bruce A Y1 - 1999/06// PY - 1999 DA - June 1999 SP - 574 EP - 582 PB - American Society of Civil Engineers, Environmental Engineering Division, New York, NY VL - 125 IS - 6 SN - 0733-9372, 0733-9372 KW - concentration KW - experimental studies KW - three-dimensional models KW - pollutants KW - landfills KW - gas chromatograms KW - characterization KW - unsaturated zone KW - pollution KW - chemical waste KW - remediation KW - ground water KW - aquifers KW - nonaqueous phase liquids KW - partitioning KW - laboratory studies KW - saturation KW - tracers KW - risk assessment KW - waste disposal KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52215897?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Environmental+Engineering&rft.atitle=Contaminated+vadose+zone+characterization+using+partitioning+gas+tracers&rft.au=Whitley%2C+G+Allen%2C+Jr%3BMcKinney%2C+Daene+C%3BPope%2C+Gary+A%3BRouse%2C+Bruce+A&rft.aulast=Whitley&rft.aufirst=G&rft.date=1999-06-01&rft.volume=125&rft.issue=6&rft.spage=574&rft.isbn=&rft.btitle=&rft.title=Journal+of+Environmental+Engineering&rft.issn=07339372&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Number of references - 25 N1 - PubXState - NY N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2012-06-07 N1 - CODEN - JOEEDU N1 - SubjectsTermNotLitGenreText - aquifers; characterization; chemical waste; concentration; experimental studies; gas chromatograms; ground water; laboratory studies; landfills; nonaqueous phase liquids; partitioning; pollutants; pollution; remediation; risk assessment; saturation; three-dimensional models; tracers; unsaturated zone; waste disposal ER - TY - JOUR T1 - Management of Commercial Air Tourism over National Parks AN - 19928190; 4690644 AB - Over the past decade, there has been a growing controversy regarding the role of air tourism over national parks and how the interests and concerns of these visitors should be reconciled with those of more traditional visitors. Agency meetings, media reports and editorials, legal briefs, and regulatory hearings have been forums for contentious debate. The management challenge is extremely complex and until recently has defied solution. The core problem is that aerial tourism occurs at the regulatory interface of two major government agencies that have very different mandated missions--the Federal Aviation Administration and the National Park Service. These agencies creatively employed a federal advisory body known as the National Parks Overflights Working Group to recommend a way to regulate commercial, park-dependent air tourism. Comprising aviation interests, environmental interests, and a Native American representative, the Working Group carefully crafted a solution that blended the authorities and responsibilities of the two agencies into a regulatory mechanism that has been deemed workable and acceptable to all parties. The Federal Aviation Administration, in cooperation with the National Park Service, is now converting this compromise process into a proposed Federal Aviation Regulation, even as the U.S. Congress is on the verge of converting it into law. If successfully implemented by the two federal agencies, this approach may provide a solution to air tourism management problems. JF - Noise Control Engineering Journal AU - Henry, W AU - Ernenwein, R AU - Thompson, H AU - Oppermann, S AD - National Park Service, Wilderness Program Leader, Ranger Activities Division, 1849 C Street NW, Washington, DC 20240, USA Y1 - 1999/06// PY - 1999 DA - Jun 1999 SP - 118 EP - 124 PB - Department of Mechanical Engineering VL - 47 IS - 3 SN - 0736-2501, 0736-2501 KW - USA KW - Sustainability Science Abstracts; Human Population; Pollution Abstracts KW - Tourism KW - Environmental regulations KW - National parks KW - Government regulations KW - Aircraft KW - Recreation areas KW - Noise KW - Aircraft noise KW - Noise pollution KW - Environmental law KW - Environment management KW - M1 320:Environmental & Natural Resource Development KW - P 9000:ENVIRONMENTAL ACTION KW - M3 1010:Issues in Sustainable Development UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19928190?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Assamodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=Noise+Control+Engineering+Journal&rft.atitle=Management+of+Commercial+Air+Tourism+over+National+Parks&rft.au=Henry%2C+W%3BErnenwein%2C+R%3BThompson%2C+H%3BOppermann%2C+S&rft.aulast=Henry&rft.aufirst=W&rft.date=1999-06-01&rft.volume=47&rft.issue=3&rft.spage=118&rft.isbn=&rft.btitle=&rft.title=Noise+Control+Engineering+Journal&rft.issn=07362501&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2000-07-01 N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Tourism; Government regulations; Aircraft; Environmental regulations; Noise; National parks; Environmental law; Environment management; Recreation areas; Aircraft noise; Noise pollution ER - TY - JOUR T1 - Effects of a Pesticide on Tadpole Activity and Predator Avoidance Behavior AN - 17582370; 4644922 AB - In this experiment, I recorded activity levels of contaminant exposed tadpoles, as well as whether their predator avoidance responses were modified due to exposure. I exposed gray treefrog (Hyla versicolor) tadpoles to sublethal levels of the pesticide carbaryl to determine whether the presence of this toxicant affects tadpole activity and predator avoidance behavior. JF - Journal of Herpetology AU - Bridges, C M AD - USGS, Columbia Environmental Research Center, 4200 New Haven Rd., Columbia, Missouri 65201, USA, Tina_Bridges@usgs.gov Y1 - 1999/06// PY - 1999 DA - Jun 1999 SP - 303 EP - 306 VL - 33 IS - 2 SN - 0022-1511, 0022-1511 KW - Gray treefrog KW - Hyla versicolor KW - carbaryl KW - juveniles KW - tadpoles KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts; Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - Juveniles KW - Predation KW - Protective behaviour KW - Larvae KW - Pollution effects KW - Freshwater KW - Anti-predator behavior KW - Sublethal effects KW - Pesticides KW - D 04803:Pollution effects KW - P 2000:FRESHWATER POLLUTION KW - Q1 08326:Physiology, biochemistry, biophysics KW - Q5 08504:Effects on organisms KW - D 04669:Amphibians UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17582370?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Herpetology&rft.atitle=Effects+of+a+Pesticide+on+Tadpole+Activity+and+Predator+Avoidance+Behavior&rft.au=Bridges%2C+C+M&rft.aulast=Bridges&rft.aufirst=C&rft.date=1999-06-01&rft.volume=33&rft.issue=2&rft.spage=303&rft.isbn=&rft.btitle=&rft.title=Journal+of+Herpetology&rft.issn=00221511&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Juveniles; Sublethal effects; Predation; Pesticides; Larvae; Protective behaviour; Pollution effects; Anti-predator behavior; Freshwater ER - TY - JOUR T1 - Temporal Variations of Water Quality and the Taxonomic Structures of Phytoplankton and Zooplankton Assemblages in Mountain Lakes, Mount Rainier National Park, Washington USA AN - 17580587; 4653150 AB - A synoptic inventory of physical and chemical properties and plankton assemblages of 27 mountain lakes was conducted at Mount Rainier National Park in 1988. From 1990-1993, the opportunity was presented to resurvey six of these lakes to determine inter-annual change within the set of characteristics surveyed in 1988. If changes were evident, a second objective was to provide guidance to park management about the value of a long-term lake monitoring program. Secchi-disk clarity, water temperature, and pH of the lakes in 1988 were within the range of values obtained between 1990 and 1993. Conductivities and concentration of nutrients in some lakes were not consistent in 1990-1993 with the values recorded in 1988. Although the dominant phytoplankton taxa in the lakes varied among years, the taxa in individual lakes were in consistent among years, with the exception of two lakes. Rotifer assemblages were consistent among years, but most of the lakes exhibited dramatic changes in some years, as did crustacean zooplankton assemblages. Suggestions were made about the need for a long-term monitoring program to evaluate the status and trends of park lakes. JF - Lake and Reservoir Management AU - Larson, G L AU - McIntire, C D AU - Jacobs, R W AU - Truitt, R AD - USGS Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR 97331, USA Y1 - 1999/06// PY - 1999 DA - Jun 1999 SP - xx VL - 15 IS - 2 SN - 0743-8141, 0743-8141 KW - USA, Washington KW - USA, Washington, Mount Rainier Natl. Park KW - Aqualine Abstracts; Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Historical account KW - Water Temperature KW - Freshwater lakes KW - Physicochemical Properties KW - Limnological surveys KW - Water quality measurements KW - National parks KW - Check lists KW - Phytoplankton KW - Environmental factors KW - Hydrogen ion concentrations KW - Water temperatures KW - Mountains KW - Lakes KW - Ecological associations KW - Physicochemical properties KW - Zooplankton KW - Water Quality KW - Secchi Disks KW - Hydrogen Ion Concentration KW - Water quality control KW - Community composition KW - Mountain Lakes KW - Taxonomy KW - Monitoring KW - USA, Washington, Mount Rainier National Park KW - Secchi disk KW - Water quality (Natural waters) KW - Plankton KW - AQ 00001:Water Resources and Supplies KW - Q1 08463:Habitat community studies KW - SW 0850:Lakes KW - P 2000:FRESHWATER POLLUTION KW - Q5 08522:Protective measures and control UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17580587?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Lake+and+Reservoir+Management&rft.atitle=Temporal+Variations+of+Water+Quality+and+the+Taxonomic+Structures+of+Phytoplankton+and+Zooplankton+Assemblages+in+Mountain+Lakes%2C+Mount+Rainier+National+Park%2C+Washington+USA&rft.au=Larson%2C+G+L%3BMcIntire%2C+C+D%3BJacobs%2C+R+W%3BTruitt%2C+R&rft.aulast=Larson&rft.aufirst=G&rft.date=1999-06-01&rft.volume=15&rft.issue=2&rft.spage=xx&rft.isbn=&rft.btitle=&rft.title=Lake+and+Reservoir+Management&rft.issn=07438141&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Water quality control; Community composition; Ecological associations; Freshwater lakes; Limnological surveys; Zooplankton; Phytoplankton; Check lists; Environmental factors; Mountains; Historical account; Lakes; Physicochemical properties; Water quality measurements; National parks; Plankton; Taxonomy; Monitoring; Water quality (Natural waters); Hydrogen ion concentrations; Secchi disk; Water temperatures; Water Temperature; Physicochemical Properties; Water Quality; Hydrogen Ion Concentration; Secchi Disks; Mountain Lakes; USA, Washington, Mount Rainier National Park ER - TY - JOUR T1 - Los Grandes Pulmones del Caribe (The Big Lungs of the Caribbean) AN - 17432102; 4649575 AB - The Spanish title, "Big Lungs of the Coasts," implies the vital niche of the mangrove forests. The mangrove tree is a halophyte, a plant that thrives in salty conditions. It has the ability to survive where no other tree can grow. JF - LakeLine AU - Lopez, R AD - U.S. Bureau of Reclamation, P.O. Box 25007 (D8290), Denver, CO 80225-0007, 303-445-2240, USA Y1 - 1999/06// PY - 1999 DA - Jun 1999 SP - 16 EP - 19 VL - 19 IS - 2 SN - 0743-7978, 0743-7978 KW - Aqualine Abstracts; Water Resources Abstracts KW - Ecology KW - Habitats KW - Salinity KW - Ecosystems KW - Salt Tolerance KW - Habitat KW - Swamps KW - Mangrove Swamps KW - AQ 00001:Water Resources and Supplies KW - SW 0890:Estuaries UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17432102?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Contemporary+School+Psychology&rft.atitle=Trauma-informed+positive+education%3A+Using+positive+psychology+to+strengthen+vulnerable+students&rft.au=Brunzell%2C+Tom%3BStokes%2C+Helen%3BWaters%2C+Lea&rft.aulast=Brunzell&rft.aufirst=Tom&rft.date=2016-03-01&rft.volume=20&rft.issue=1&rft.spage=63&rft.isbn=&rft.btitle=&rft.title=Contemporary+School+Psychology&rft.issn=21592020&rft_id=info:doi/10.1007%2Fs40688-015-0070-x LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Mangrove Swamps; Ecosystems; Salinity; Salt Tolerance; Habitats; Swamps; Ecology; Habitat ER - TY - JOUR T1 - Historical Trends in Salinity and Substrate in Central Florida Bay: A Paleoecological Reconstruction Using Modern Analogue Data AN - 17405568; 4625637 AB - Understanding the natural spatial and temporal variability that exists within an ecosystem is a critical component of efforts to restore systems to their natural state. Analysis of benthic foraminifers and molluscs from modern monitoring sites within Florida Bay allows us to determine what environmental parameters control spatial and temporal variability of their assemblages. Faunal assemblages associated with specific environmental parameters, including salinity and substrate, serve as proxies for an interpretation of paleoecologic data. The faunal record preserved in two shallow (< 2 m) cores in central Florida Bay (Russell Bank and Bob Allen Bank) provides a record of historical trends in environmental parameters for those sites. Analysis of these two cores has revealed two distinct patterns of salinity change at these sites: 1) a long-term trend of slightly increasing average salinity; and 2) a relatively rapid change to salinity fluctuations of greater frequency and amplitude, beginning around the turn of the century and becoming most pronounced after 1940. The degree of variability in substrate types at each locality limits interpretations of substrate trends to specific sites. A common sequence of change is present in the Russell Bank and Bob Allen Bank cores: from mixed grass and bare-sediment indicators at the bottom of the cores, to bare-sediment dwellers in the center, to a dominance of vegetative-cover indicators at the top of the cores. Changes in interpreted salinity patterns around the turn of the century are consistent with the timing of the construction of the Flagler Railroad from 1905 to 1912, and the Tamiami Trail and the canal and levee systems between 1915 and 1928. Beginning around 1940, the changes in the frequency and amplitude of salinity fluctuations may be related to changes in water management practices, meteorologic events (frequent hurricanes coupled with severe droughts in 1943 and 1944), or a combination of factors. The correspondence of these changes in Florida Bay with changes in the terrestrial Everglades suggests factors affecting the entire ecosystem are responsible for the salinity and substrate patterns seen in Florida Bay. JF - Estuaries AU - Brewster-Wingard, G L AU - Ishman, SE AD - United States Geological Survey, MS 926 A, National Center, Reston, VA 20192, USA, lwingard@usgs.gov Y1 - 1999/06// PY - 1999 DA - Jun 1999 SP - 369 EP - 383 VL - 22 IS - 2B SN - 0160-8347, 0160-8347 KW - USA, Florida, Florida Bay KW - Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Environmental Effects KW - Water Management KW - Palaeoecology KW - Ecosystems KW - Drainage KW - Estuaries KW - Fossil Foraminifera KW - Drought KW - Foraminifera KW - Salinity data KW - Salinity KW - History KW - Palaeontology KW - Mollusks KW - Data Interpretation KW - Water Control KW - Data Collections KW - Q2 09187:Geochemistry of sediments KW - O 1080:Multi-disciplinary Studies KW - SW 0890:Estuaries KW - Q1 08187:Palaeontology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17405568?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Estuaries&rft.atitle=Historical+Trends+in+Salinity+and+Substrate+in+Central+Florida+Bay%3A+A+Paleoecological+Reconstruction+Using+Modern+Analogue+Data&rft.au=Brewster-Wingard%2C+G+L%3BIshman%2C+SE&rft.aulast=Brewster-Wingard&rft.aufirst=G&rft.date=1999-06-01&rft.volume=22&rft.issue=2B&rft.spage=369&rft.isbn=&rft.btitle=&rft.title=Estuaries&rft.issn=01608347&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Salinity data; Palaeoecology; Fossil Foraminifera; Palaeontology; Environmental Effects; Water Management; Ecosystems; Drainage; Estuaries; Drought; Foraminifera; Salinity; History; Mollusks; Water Control; Data Interpretation; Data Collections ER - TY - JOUR T1 - Prevalence of Renibacterium salmoninarum in Juvenile Spring Chinook Salmon at Columbia and Snake River Hatcheries, 1993-1996 AN - 17405370; 4627763 AB - We monitored the prevalence and severity of Renibacterium salmoninarum (RS) infections in juvenile hatchery spring chinook salmon Oncorhynchus tshawytscha at eight Columbia and Snake river hatcheries from 1993 through 1996. This study followed a prior study that monitored RS in the same hatcheries from 1988 through 1992. In the current study, we found that the prevalence of RS-positive fish declined at two hatcheries relative to the preceding 5 years. Prevalence dropped from near 90% in 1992 to below 50% at both sites by 1993 and was less than 20% at three locations in 1995. In contrast, prevalence increased at four of seven sites in 1993 and six of seven sites in 1994. This indicated that previously reported declines in RS prevalence at these locations might have been temporary. Our results showed that in 1993 the majority of fish at all monitored hatcheries had low RS-antigen levels and remained that way at most locations through 1996. These results suggest that certain hatchery practices may limit the severity of RS infections. Although elevations at two sites in 1994 and 1995 indicate reductions in RS were temporary in the short term, long-term monitoring will undoubtedly be required given the many factors that influence disease processes. JF - Journal of Aquatic Animal Health AU - VanderKooi, S P AU - Maule, A G AD - U.S. Geological Survey, Biological Resources Division, Western Fisheries Research Center, Columbia River Research Laboratory, 5501A Cook-Underwood Road, Cook, WA 98605, USA, alec_maule@usgs.gov Y1 - 1999/06// PY - 1999 DA - Jun 1999 SP - 162 EP - 169 VL - 11 IS - 2 SN - 0899-7659, 0899-7659 KW - Chinook salmon KW - USA, Columbia R. KW - USA, Snake R. KW - Microbiology Abstracts B: Bacteriology; ASFA 1: Biological Sciences & Living Resources; ASFA Aquaculture Abstracts KW - Hatcheries KW - Short-term records KW - Renibacterium salmoninarum KW - Fish diseases KW - Bacterial diseases KW - Freshwater KW - Population dynamics KW - Oncorhynchus tshawytscha KW - J 02862:Infection KW - Q1 08587:Diseases of Cultured Organisms KW - Q1 08484:Species interactions: parasites and diseases KW - J 02905:Water KW - Q3 08587:Diseases of Cultured Organisms UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17405370?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Aquatic+Animal+Health&rft.atitle=Predicting+positive+education+outcomes+for+emerging+adults+in+mental+health+systems+of+care&rft.au=Brennan%2C+Eileen+M.%3BNygren%2C+Peggy%3BStephens%2C+Robert+L.%3BCroskey%2C+Adrienne&rft.aulast=Brennan&rft.aufirst=Eileen&rft.date=2015-03-25&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=The+Journal+of+Behavioral+Health+Services+%26+Research&rft.issn=10943412&rft_id=info:doi/10.1007%2Fs11414-015-9454-y LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Short-term records; Hatcheries; Fish diseases; Bacterial diseases; Population dynamics; Renibacterium salmoninarum; Oncorhynchus tshawytscha; Freshwater ER - TY - JOUR T1 - Reconstructing the History of Eastern and Central Florida Bay Using Mollusk-Shell Isotope Records AN - 17403861; 4625636 AB - Stable isotopic ratios of carbon and oxygen ( delta super(13)C and delta super(18)O) from mollusk shells reflect the water quality characteristics of Florida Bay and can be used to characterize the great temporal variability of the bay. Values of delta super(18)O are directly influenced by temperature and evaporation and may be related to salinity. delta super(13)C values of delta super(13)C are sensitive to organic and inorganic sources of carbon and are influenced by productivity. Analyses of eight mollusk species from five short-core localities across Florida Bay show large ranges in the values of delta super(13)C and delta super(18)O, and reflect the variation of the bay over decades. Samples from southwestern Florida Bay have distinct delta super(13)C values relative to samples collected in northeastern Florida Bay, and intermediate localities have intermediate values. super(13)C values of delta super(13)C grade from marine in the southwest bay to more estuarine in the northeast. Long cores (> 1 m) with excellent chronologies were analyzed from central and eastern Florida Bay. Preliminary analyses of Brachiodontes exustus and Transenella spp. from the cores showed that both delta super(13)C and delta super(18)O changed during the first part of the twentieth century. After a century of relative stability during the 1800s, delta super(13)C decreased between about 1910 and 1940, then stabilized at these new values for the next five decades. The magnitude of the reduction in delta super(13)C values increased toward the northeast. Using a carbon budget model, reduced delta super(13)C values are interpreted as resulting from decreased circulation in the bay, probably associated with decreased freshwater flow into the Bay. Mollusk shell delta super(18)O values display several negative excursions during the 1800s, suggesting that the bay was less evaporitic than during the twentieth century. The isotope records indicate a fundamental change took place in Florida Bay circulation early in the twentieth century. The timing of the change links it to railroad building and early drainage efforts in South Florida rather than to flood control and water management measures initiated after World War II. JF - Estuaries AU - Halley, R B AU - Roulier, L M AD - United States Geological Survey, 600 Fourth Street South, St. Petersburg, FL 33701, USA, halley@wayback.er.usgs.gov Y1 - 1999/06// PY - 1999 DA - Jun 1999 SP - 358 EP - 368 VL - 22 IS - 2B SN - 0160-8347, 0160-8347 KW - USA, Florida, Florida Bay KW - Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Marine KW - Water Management KW - Fossil assemblages KW - Evaporation KW - Drainage KW - Estuaries KW - Climatic changes KW - Water Quality KW - Temperature KW - Palaeoenvironments KW - Carbon cycle KW - Isotope Studies KW - Water quality KW - Oxygen isotopes KW - Flood Control KW - Salinity KW - History KW - Mollusks KW - ASW, USA, Florida, Florida Bay KW - Bays KW - Q2 09148:Palaeo-studies KW - O 3010:Geology and Geophysics KW - SW 0890:Estuaries UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17403861?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Estuaries&rft.atitle=Reconstructing+the+History+of+Eastern+and+Central+Florida+Bay+Using+Mollusk-Shell+Isotope+Records&rft.au=Halley%2C+R+B%3BRoulier%2C+L+M&rft.aulast=Halley&rft.aufirst=R&rft.date=1999-06-01&rft.volume=22&rft.issue=2B&rft.spage=358&rft.isbn=&rft.btitle=&rft.title=Estuaries&rft.issn=01608347&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Oxygen isotopes; Fossil assemblages; Climatic changes; Carbon cycle; Palaeoenvironments; Water quality; Flood Control; Salinity; Water Management; Evaporation; History; Drainage; Estuaries; Temperature; Water Quality; Isotope Studies; Mollusks; Bays; ASW, USA, Florida, Florida Bay; Marine ER - TY - JOUR T1 - Influence of Infection with Renibacterium salmoninarum on Susceptibility of Juvenile Spring Chinook Salmon to Gas Bubble Trauma AN - 17402466; 4627757 AB - During experiments in our laboratory to assess the progression and severity of gas bubble trauma (GBT) in juvenile spring chinook salmon Oncorhynchus tshawytscha, we had the opportunity to assess the influence of Renibacterium salmoninarum (Rs), the causative agent of bacterial kidney disease, on the susceptibility of salmon to GBT. We exposed fish with an established infection of Rs to 120% total dissolved gas (TDG) for 96 h and monitored severity of GBT signs in the fins and gills, Rs infection level in kidneys by using an enzyme-linked immunosorbent assay (ELISA), and mortality. Mortality occurred rapidly after exposure to 120% TDG, with a LT20 (time necessary to kill 20% of the population) of about 37 h, which is at a minimum about 16% earlier than other bioassays we have conducted using fish that had no apparent signs of disease. Fish that died early (from 31 to 36 h and from 49 to 52 h) had significantly higher infection levels (mean plus or minus SE ELISA absorbance = 1.532 plus or minus 0.108) than fish that survived for 96 h (mean plus or minus SE ELISA absorbance = 0.828 plus or minus 0.137). Fish that died early also had a significantly greater number of gill filaments occluded with bubbles than those that survived 96 h. Conversely, fish that survived for 96 h had a significantly higher median fin severity ranking than those that died early. Our results indicate that fish with moderate to high levels of Rs infection are more vulnerable to the effects of dissolved gas supersaturation (DGS) and die sooner than fish with lower levels of Rs infection. However, there is a substantial amount of individual variation in susceptibility to the apparent cumulative effects of DGS and Rs infection. Collectively, our findings have important implications to programs designed to monitor the prevalence and severity of GBT in juvenile salmonids in areas like the Columbia River basin, and perhaps elsewhere. JF - Journal of Aquatic Animal Health AU - Weiland, L K AU - Mesa, M G AU - Maule, A G AD - U.S. Geological Survey, Biological Resources Division, Columbia River Research Laboratory, 5501A Cook-Underwood Road, Cook, WA 98605, USA, matt_mesa@usgs.gov Y1 - 1999/06// PY - 1999 DA - Jun 1999 SP - 123 EP - 129 VL - 11 IS - 2 SN - 0899-7659, 0899-7659 KW - Chinook salmon KW - Microbiology Abstracts B: Bacteriology; Oceanic Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Mortality KW - Supersaturation KW - Enzyme-linked immunosorbent assay KW - Air bubbles KW - Immunology KW - Bacterial diseases KW - Biological resistance KW - Disease resistance KW - Kidneys KW - Freshwater KW - Dissolved gases KW - Oncorhynchus tshawytscha KW - Bubble disease KW - Renibacterium salmoninarum KW - Fish diseases KW - Fins KW - Bubbles KW - Gills KW - J 02862:Infection KW - Q1 08484:Species interactions: parasites and diseases KW - O 1050:Vertebrates, Urochordates and Cephalochordates UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17402466?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Aquatic+Animal+Health&rft.atitle=Influence+of+Infection+with+Renibacterium+salmoninarum+on+Susceptibility+of+Juvenile+Spring+Chinook+Salmon+to+Gas+Bubble+Trauma&rft.au=Weiland%2C+L+K%3BMesa%2C+M+G%3BMaule%2C+A+G&rft.aulast=Weiland&rft.aufirst=L&rft.date=1999-06-01&rft.volume=11&rft.issue=2&rft.spage=123&rft.isbn=&rft.btitle=&rft.title=Journal+of+Aquatic+Animal+Health&rft.issn=08997659&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Supersaturation; Mortality; Air bubbles; Immunology; Bacterial diseases; Biological resistance; Kidneys; Disease resistance; Dissolved gases; Bubble disease; Fins; Fish diseases; Gills; Bubbles; Enzyme-linked immunosorbent assay; Renibacterium salmoninarum; Oncorhynchus tshawytscha; Freshwater ER - TY - JOUR T1 - Transport of Cryptosporidium parvum Oocysts through Saturated Columns AN - 17390655; 4617298 AB - Transport of Cryptosporidium parvum oocysts through three substrates was used to determine dispersion, retardation, and first-order decay parameters for the convective dispersion equation (CDE). Pulses of diluted Holstein calf feces containing oocysts were passed through saturated columns packed with either glass beads, coarse sand, or shale aggregate. Effluent chloride breakthrough curves (BTCs) were used to fit pore water velocities and dispersions for each column to the CDE. These pore water velocities were then used to fit dispersion, retardation and first-order decay factors to the CDE for C. parvum oocyst BTCs for each column. Dispersion coefficients for oocysts averaged 0.8 cm super(2) s super(-1) in glass beads, 1.7 cm super(2) s super(-1) in sand, and 1.3 cm super(2) s super(-1) in shale aggregate. The ratio of oocyst dispersion to chloride dispersion was <1 for all substrates, suggesting oocysts experienced less shear and turbulence than the pore water. Diffusivities of 0.07 cm for glass beads, 0.15 cm for sand, and 0.09 cm for shale aggregate show that facilitated transport in sand was greater than in the other two substrates. Retardation coefficients for oocysts averaged 1.0 in glass beads and sand and 0.9 in shale aggregate, indicating oocysts did not adhere to these substrates. First-order decay coefficients of 0.5 s super(-1) for glass beads, 0.8 s super(-1) for sand, and 0.6 s super(-1) for shale aggregate indicate significantly higher removal rates in the sand columns. These data suggest oocysts may travel significant distances in both subsurface and overland flow. JF - Journal of Environmental Quality AU - Brush, C F AU - Ghiorse, W C AU - Anguish, L J AU - Parlange, J-Y AU - Grimes, H G AD - U.S. Geol. Surv., 1289 McD Drive, Dover, DE 1990, USA, cfbrush@usgs.gov Y1 - 1999/06// PY - 1999 DA - Jun 1999 SP - 809 EP - 815 VL - 28 IS - 3 SN - 0047-2425, 0047-2425 KW - oocysts KW - shale KW - substrates KW - Cryptosporidium parvum KW - Pollution Abstracts; Water Resources Abstracts; Microbiology Abstracts C: Algology, Mycology & Protozoology KW - Pore water KW - Path of Pollutants KW - Mathematical Equations KW - Chlorides KW - Sand KW - Substrates KW - Decay KW - Feces KW - Overland Flow KW - Shear KW - Mathematical models KW - Oocysts KW - Velocity KW - Glass KW - Interstitial Water KW - Water pollution KW - Cryptosporidium KW - Microorganisms KW - Dispersion KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - K 03071:Protozoa UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17390655?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Environmental+Quality&rft.atitle=Transport+of+Cryptosporidium+parvum+Oocysts+through+Saturated+Columns&rft.au=Brush%2C+C+F%3BGhiorse%2C+W+C%3BAnguish%2C+L+J%3BParlange%2C+J-Y%3BGrimes%2C+H+G&rft.aulast=Brush&rft.aufirst=C&rft.date=1999-06-01&rft.volume=28&rft.issue=3&rft.spage=809&rft.isbn=&rft.btitle=&rft.title=Journal+of+Environmental+Quality&rft.issn=00472425&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Cryptosporidium parvum; Cryptosporidium; Interstitial Water; Oocysts; Substrates; Chlorides; Shear; Overland Flow; Path of Pollutants; Feces; Mathematical Equations; Water pollution; Dispersion; Microorganisms; Sand; Decay; Pore water; Glass; Velocity; Mathematical models ER - TY - JOUR T1 - The dependence of permeability on effective stress from flow tests at hot dry rock reservoirs at Rosemanowes (Cornwall) and Fenton Hill (New Mexico) AN - 17386887; 4594713 AB - Effective stress is the primary control on permeability and thus on flow and water loss for two-well hot dry rock systems involving injection and production that have been tested to date. Theoretical relations are derived for the flow between an injector and producer, including the dependence of permeability on effective stress. Four relations for permeability as a function of effective stress are used to match field data for the hot dry rock systems at Rosemanowes, Cornwall, and Fenton Hill, New Mexico. The flow and water loss behavior of these systems are well explained by the influence of effective stress on permeability. All four relations for permeability as a function of effective stress are successful in matching the field data, but some have difficulty in determining unique values for elastic and hydrologic parameters. JF - Geothermics AU - Nathenson, M AD - U.S. Geological Survey, 345 Middlefield Road, Menlo Park, CA 94025 USA, mnathnsn@mojave.wr.usgs.gov Y1 - 1999/06// PY - 1999 DA - Jun 1999 SP - 315 EP - 340 VL - 28 IS - 3 SN - 0375-6505, 0375-6505 KW - hot dry rock systems KW - British Isles, England, Cornwall, Rosemanowes KW - USA, New Mexico, Fenton Hill KW - Water Resources Abstracts KW - Flow KW - Geothermal Studies KW - Permeability KW - Behavior KW - Rocks KW - Stress KW - Field Tests KW - Injection KW - SW 0840:Groundwater UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17386887?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Geothermics&rft.atitle=The+dependence+of+permeability+on+effective+stress+from+flow+tests+at+hot+dry+rock+reservoirs+at+Rosemanowes+%28Cornwall%29+and+Fenton+Hill+%28New+Mexico%29&rft.au=Nathenson%2C+M&rft.aulast=Nathenson&rft.aufirst=M&rft.date=1999-06-01&rft.volume=28&rft.issue=3&rft.spage=315&rft.isbn=&rft.btitle=&rft.title=Geothermics&rft.issn=03756505&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Stress; Permeability; Rocks; Injection; Flow; Behavior; Field Tests; Geothermal Studies ER - TY - JOUR T1 - Liquefaction and Soil Failure During 1994 Northridge Earthquake AN - 17371353; 4597985 AB - The 1994 Northridge, Calif., earthquake caused widespread permanent ground deformation on the gently sloping alluvial fan surface of the San Fernando Valley. The ground cracks and distributed deformation damaged both pipelines and surface structures. To evaluate the mechanism of soil failure, detailed subsurface investigations were conducted at four sites. Three sites are underlain by saturated sandy silts with low standard penetration test and cone penetration test values. These soils are similar to those that liquefied during the 1971 San Fernando earthquake, and are shown by widely used empirical relationships to be susceptible to liquefaction. The remaining site is underlain by saturated clay whose undrained shear strength is approximately half the value of the earthquake-induced shear stress at this location. This study demonstrates that the heterogeneous nature of alluvial fan sediments in combination with variations in the ground-water table can be responsible for complex patterns of permanent ground deformation. It may also help to explain some of the spatial variability of strong ground motion observed during the 1994 earthquake. JF - Journal of Geotechnical and Geoenvironmental Engineering AU - Holzer, T L AU - Bennett, MJ AU - Ponti, D J AU - Tinsley, JC III AD - U.S. Geological Survey, 345 Middlefield Rd., MS 977, Menlo Park, CA 94025, USA, tholzer@usgs.gov Y1 - 1999/06// PY - 1999 DA - Jun 1999 SP - 438 EP - 452 VL - 125 IS - 6 SN - 1090-0241, 1090-0241 KW - USA, California, Northridge KW - USA, California, San Fernando Valley KW - Water Resources Abstracts KW - Earthquakes KW - Strength KW - Liquefaction KW - Soil Mechanics KW - Shear Stress KW - Alluvial Fans KW - Water Table KW - Spatial Distribution KW - Heterogeneity KW - Deformation KW - SW 6040:Soil mechanics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17371353?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Geotechnical+and+Geoenvironmental+Engineering&rft.atitle=Liquefaction+and+Soil+Failure+During+1994+Northridge+Earthquake&rft.au=Holzer%2C+T+L%3BBennett%2C+MJ%3BPonti%2C+D+J%3BTinsley%2C+JC+III&rft.aulast=Holzer&rft.aufirst=T&rft.date=1999-06-01&rft.volume=125&rft.issue=6&rft.spage=438&rft.isbn=&rft.btitle=&rft.title=Journal+of+Geotechnical+and+Geoenvironmental+Engineering&rft.issn=10900241&rft_id=info:doi/10.1061%2F%28ASCE%291090-0241%281999%29125%3A6%28438%29 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Liquefaction; Earthquakes; Deformation; Alluvial Fans; Spatial Distribution; Strength; Shear Stress; Heterogeneity; Water Table; Soil Mechanics DO - http://dx.doi.org/10.1061/(ASCE)1090-0241(1999)125:6(438) ER - TY - JOUR T1 - Characterizing hydrology and the importance of ground-water discharge in natural and constructed wetlands AN - 17368115; 4572950 AB - Although considered the most important component for the establishment and persistence of wetlands, hydrology has been hard to characterize and linkages between hydrology and other environmental conditions are often poorly understood. In this work, methods for characterizing a wetland's hydrology from hydrographs were developed, and the importance of ground water to the physical and geochemical conditions in the root zone was investigated. Detailed sampling of nearly continuous hydrographs showed that sites with greater ground-water discharge had higher water tables and more stable hydrographs. Subsampling of the continuous hydrograph failed to characterize the sites correctly, even though the wetland complex is located in a strong regional ground-water-discharge area. By comparing soil-moisture-potential measurements to the water-table hydrograph at one site, we noted that the amount of root-zone saturation was not necessarily driven by the water-table hydrograph but can be a result of other soil parameters (i.e., soil texture and associated capillary fringe). Ground-water discharge was not a significant determinant of maximum or average temperatures in the root zone. High ground-water discharge was associated with earliest date of thaw and shortest period of time that the root zone was frozen, however. Finally, the direction and magnitude of shallow ground-water flow was found to affect the migration and importance of a geochemical species. Areas of higher ground-water discharge had less downward penetration of CO sub(2) generated in the root zone. In contrast, biotically derived CO sub(2) was able to penetrate the deeper ground-water system in areas of ground-water recharge. Although ground-water flows are difficult to characterize, understanding these components is critical to the success of wetland restoration and creation efforts. JF - Wetlands AU - Hunt, R J AU - Walker, J F AU - Krabbenhoft, D P AD - US Geological Survey--Water Resources Division, 8505 Research Way, Middleton, WI, 53562, USA, rjhunt@usgs.gov Y1 - 1999/06// PY - 1999 DA - Jun 1999 SP - 458 EP - 472 VL - 19 IS - 2 SN - 0277-5212, 0277-5212 KW - Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Groundwater Discharge KW - Geochemistry KW - Hydrogeology KW - Water table KW - Freshwater KW - Water Table KW - Artificial Wetlands KW - Water levels KW - Root Zone KW - Geohydrology KW - Ground water KW - Hydrology KW - Hydrographs KW - Wetlands KW - Environmental conditions KW - Soil horizons KW - AQ 00001:Water Resources and Supplies KW - Q5 08523:Conservation, wildlife management and recreation KW - Q2 09283:Soil mechanics KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17368115?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wetlands&rft.atitle=Characterizing+hydrology+and+the+importance+of+ground-water+discharge+in+natural+and+constructed+wetlands&rft.au=Hunt%2C+R+J%3BWalker%2C+J+F%3BKrabbenhoft%2C+D+P&rft.aulast=Hunt&rft.aufirst=R&rft.date=1999-06-01&rft.volume=19&rft.issue=2&rft.spage=458&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Water levels; Ground water; Hydrology; Wetlands; Environmental conditions; Hydrogeology; Geochemistry; Water table; Hydrographs; Soil horizons; Root Zone; Groundwater Discharge; Geohydrology; Water Table; Artificial Wetlands; Freshwater ER - TY - JOUR T1 - Aerobic mineralization of MTBE and tert-butyl alcohol by stream-bed sediment microorganisms AN - 17362216; 4580135 AB - Microorganisms indigenous to the stream-bed sediments at two gasoline-contaminated groundwater sites demonstrated significant mineralization of the fuel oxygenates, methyl tert-butyl ether (MTBE) and tert-butyl alcohol (TBA). Up to 73% of [U- super(14)C]-MTBE and 84% of [U- super(14)C]-TBA were degraded to super(14)CO sub(2) under mixed aerobic/anaerobic conditions. No significant mineralization was observed under strictly anaerobic conditions. The results indicate that, under the mixed aerobic/anaerobic conditions characteristic of stream-bed sediments, microbial processes may provide a significant environmental sink for MTBE and TBA delivered to surface water bodies by contaminated groundwater or by other sources. JF - Environmental Science & Technology AU - Bradley, P M AU - Landmeyer, JE AU - Chapelle, F H AD - U.S. Geological Survey, 720 Gracern Road, Suite 129, Columbia, SC 29210-7651, USA, pbradley@usgs.gov Y1 - 1999/06/01/ PY - 1999 DA - 1999 Jun 01 SP - 1877 EP - 1879 VL - 33 IS - 11 SN - 0013-936X, 0013-936X KW - MTBE KW - TBA KW - methyl tert-butyl ether KW - methyl tertiary butyl ether KW - tert-Butyl alcohol KW - tert-butyl alcohol KW - Microbiology Abstracts A: Industrial & Applied Microbiology; Water Resources Abstracts; Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality KW - Anaerobic Conditions KW - Aerobic conditions KW - Gasoline KW - Fuels KW - Groundwater Pollution KW - Mineralization KW - Streams KW - Pollutant persistence KW - Sediment pollution KW - Oxic conditions KW - Aerobic Conditions KW - Fate of Pollutants KW - Microbial activity KW - Sediments KW - Anoxic conditions KW - Alcohols KW - Microorganisms KW - Groundwater pollution KW - Organic Compounds KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - A 01103:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17362216?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Aerobic+mineralization+of+MTBE+and+tert-butyl+alcohol+by+stream-bed+sediment+microorganisms&rft.au=Bradley%2C+P+M%3BLandmeyer%2C+JE%3BChapelle%2C+F+H&rft.aulast=Bradley&rft.aufirst=P&rft.date=1999-06-01&rft.volume=33&rft.issue=11&rft.spage=1877&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes990062t LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Oxic conditions; Sediment pollution; Anoxic conditions; Pollutant persistence; Groundwater pollution; Mineralization; Gasoline; Aerobic conditions; Fuels; Microbial activity; Streams; Anaerobic Conditions; Aerobic Conditions; Alcohols; Fate of Pollutants; Microorganisms; Groundwater Pollution; Organic Compounds; Sediments DO - http://dx.doi.org/10.1021/es990062t ER - TY - JOUR T1 - The relationship between species density and community biomass in grazed and ungrazed coastal meadows AN - 17307322; 4568813 AB - Previous studies have indicated that the relationship between community biomass and species density can be represented by a multivariate model in which abiotic variables influence species density both through effects on biomass and through effects on the species pool. In this paper, we use data from grazed and ungrazed coastal meadows in Finland to evaluate and extend this general conceptual model of the factors controlling species density. Structural equation analysis was used to evaluate a model for all meadows and then to perform a multigroup analysis to determine how grazed and ungrazed meadows differ. By itself, biomass could explain only 12% of the variation in species density while the multivariate model was able to explain 47% using five types of predictor variables: site, soil, flooding, grazing, and biomass. Analyses found that flooding explained the greatest amount of variability in species density, primarily through negative effects on the species pool. Grazing was also found to have a strong effect on species density and results suggest that its negative influence may be largely through reductions in the species pool in grazed meadows. The most important difference found between grazed and ungrazed meadows was that species density had a strong negative relationship to biomass in the ungrazed meadows but no significant relationship in the grazed ones. Thus, it appears that the influence of competition on species density was much greater in ungrazed meadows compared to grazed ones. JF - Oikos AU - Grace, J B AU - Jutila, H AD - National Wetlands Research Center, U.S. Geological Survey, 700 Cajundome Blvd, Lafayette, LA 70506, USA, jim_grace@usgs.gov Y1 - 1999/06// PY - 1999 DA - Jun 1999 SP - 398 EP - 408 PB - Munksgaard International Publishers Ltd. VL - 85 IS - 3 SN - 0030-1299, 0030-1299 KW - Ecology Abstracts KW - Species packing KW - Coastal environments KW - Grazing KW - Meadows KW - Biomass KW - D 04115:Temperate grasslands UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17307322?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Oikos&rft.atitle=The+relationship+between+species+density+and+community+biomass+in+grazed+and+ungrazed+coastal+meadows&rft.au=Grace%2C+J+B%3BJutila%2C+H&rft.aulast=Grace&rft.aufirst=J&rft.date=1999-06-01&rft.volume=85&rft.issue=3&rft.spage=398&rft.isbn=&rft.btitle=&rft.title=Oikos&rft.issn=00301299&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Grazing; Biomass; Species packing; Coastal environments; Meadows ER - TY - JOUR T1 - Modeling bird mortality associated with the M/V Citrus oil spill off St. Paul Island, Alaska AN - 17359776; 4566266 AB - We developed a model to estimate the number of bird carcasses that were likely deposited on the beaches of St. Paul Island, Alaska following the M/V Citrus oil spill in February 1996. Most of the islands beaches were searched on an irregular schedule, resulting in the recovery of 876 King Eider carcasses. A sub-sample of beaches were intensively studied to estimate daily persistence rate and detection probability. Using these data, our model predicted that an additional 733 plus or minus 70 King Eider carcasses were not detected during our searches. Therefore, we estimate that at least 1609 plus or minus 70 King Eider carcasses occurred on beaches as a result of the spill. We lacked sufficient sample size to model losses for other species, thus we applied the estimated recovery rate for King Eiders (54%) to other species and estimate a total combined loss of 1765 birds. In addition, 165 birds were captured alive making the total estimated number of birds impacted by the M/V Citrus spill 1930. Given that oiled birds occurred in places on the island which could not be systematically searched combined with the fact that it was unlikely that oiled birds that died at sea would have been recovered during our searches, our estimate of total mortality associated with the spill should be considered a minimum. JF - Ecological Modelling AU - Flint, P L AU - Fowler, A C AU - Rockwell, R F AD - Alaska Biological Science Center, US Geological Survey, 1011 East Tudor Road, Anchorage, AK 99503, USA, paul_flint@usgs.gov Y1 - 1999/05/17/ PY - 1999 DA - 1999 May 17 SP - 261 EP - 267 VL - 117 IS - 2-3 SN - 0304-3800, 0304-3800 KW - Birds KW - King eider KW - USA, Alaska, St. Paul I. KW - Pollution Abstracts; Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts KW - Marine KW - Mortality KW - Beaches KW - Marine birds KW - Pollution effects KW - Models KW - Aves KW - Carcasses KW - Water Pollution Effects KW - Somateria spectabilis KW - Oil Spills KW - INE, USA, Alaska, St. Paul I. KW - Oil pollution KW - Oil Pollution KW - Approximation KW - Oil spills KW - D 04003:Modeling, mathematics, computer applications KW - P 1000:MARINE POLLUTION KW - Q5 08504:Effects on organisms KW - SW 3030:Effects of pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17359776?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Modelling&rft.atitle=Modeling+bird+mortality+associated+with+the+M%2FV+Citrus+oil+spill+off+St.+Paul+Island%2C+Alaska&rft.au=Flint%2C+P+L%3BFowler%2C+A+C%3BRockwell%2C+R+F&rft.aulast=Flint&rft.aufirst=P&rft.date=1999-05-17&rft.volume=117&rft.issue=2-3&rft.spage=261&rft.isbn=&rft.btitle=&rft.title=Ecological+Modelling&rft.issn=03043800&rft_id=info:doi/10.1016%2FS0304-3800%2899%2900006-X LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Mortality; Marine birds; Carcasses; Pollution effects; Oil pollution; Approximation; Oil spills; Models; Aves; Beaches; Water Pollution Effects; Oil Spills; Birds; Oil Pollution; Somateria spectabilis; INE, USA, Alaska, St. Paul I.; Marine DO - http://dx.doi.org/10.1016/S0304-3800(99)00006-X ER - TY - JOUR T1 - National park and reserve planning to protect biological diversity: some basic elements AN - 19930165; 4570651 AB - Key needs for the creation of a nature reserve system are outlined: formulating goals, selecting management categories, taking inventory, identifying gaps, designing reserves, measuring reserve condition and vulnerability, and recognizing the relationship between research and management. Some essential components are highlighted: a regional perspective, diversification of management categories, focus on the economics of human welfare, not ignoring the opportunities small reserves can provide for some biota, addition of marine reserves, and the importance of a focus on natural processes. The view some Americans have of indigenous people and protected areas is not compatible with third world realities. Since the problems and challenges of protecting areas in northern and southern countries are alike in many ways, however, a Eurocentric seeking to articulate the special circumstances faced by tropical countries offers these suggestions. JF - Landscape and Urban Planning AU - Shafer, CL AD - National Park Service, Natural Resources, Stewardship and Science, 1849 C. Street, N.W., Washington DC 20240-0001, USA, craig_shafer@nps.gov Y1 - 1999/05/10/ PY - 1999 DA - 1999 May 10 SP - 123 EP - 153 VL - 44 IS - 2-3 SN - 0169-2046, 0169-2046 KW - Indigenous peoples KW - Sustainability Science Abstracts; Ecology Abstracts; Human Population KW - National parks KW - Biological diversity KW - Environmental protection KW - Socio-economic aspects KW - USA KW - Nature conservation KW - Nature reserves KW - Developing countries KW - Environment management KW - M1 320:Environmental & Natural Resource Development KW - M3 1010:Issues in Sustainable Development KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19930165?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Landscape+and+Urban+Planning&rft.atitle=National+park+and+reserve+planning+to+protect+biological+diversity%3A+some+basic+elements&rft.au=Shafer%2C+CL&rft.aulast=Shafer&rft.aufirst=CL&rft.date=1999-05-10&rft.volume=30&rft.issue=1&rft.spage=26&rft.isbn=&rft.btitle=&rft.title=Fr%C3%BChf%C3%B6rderung+interdisziplin%C3%A4r&rft.issn=07219121&rft_id=info:doi/10.2378%2Ffi2011.art03d LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 1999-11-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - USA; National parks; Nature reserves; Biological diversity; Environment management; Socio-economic aspects; Environmental protection; Developing countries; Nature conservation DO - http://dx.doi.org/10.1016/S0169-2046(98)00115-7 ER - TY - JOUR T1 - A topological system for delineation and codification of the Earth's river basins AN - 17358372; 4547185 AB - A comprehensive reference system for the Earth's river basins is proposed as a support to river basin management, global change research, and the pursuit of sustainable development. A natural system for delineation and codification of basins is presented which is based upon topographic control and the topology of the river network. These characteristics make the system well suited for implementation and use with digital elevation models (DEMs) and geographic information systems. A demonstration of these traits is made with the 30-arcsecond GTOPO30 DEM for North America. The system has additional appeal owing to its economy of digits and the topological information that they carry. This is illustrated through presentation of comparisons with USGS hydrologic unit codes and demonstration of the use of code numbers to reveal dependence or independence of water use activities within a basin. JF - Journal of Hydrology (Amsterdam) AU - Verdin, K L AU - Verdin, J P AD - Raytheon STX Corporation, Earth Resources Observation Systems (EROS) Data Center, Sioux Falls, SD 57198, USA, kverdin@edcmail.cr.usgs.gov Y1 - 1999/05/10/ PY - 1999 DA - 1999 May 10 SP - 1 EP - 12 VL - 218 IS - 1-2 SN - 0022-1694, 0022-1694 KW - digital elevation models KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Topology KW - River basins KW - Water Use KW - Water use KW - USA KW - Classification KW - Water management KW - Mapping KW - River Basin Management KW - Geographical Information Systems KW - Topography KW - Q2 09127:General papers on resources KW - SW 0810:General KW - SW 0835:Streamflow and runoff UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17358372?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydrology+%28Amsterdam%29&rft.atitle=A+topological+system+for+delineation+and+codification+of+the+Earth%27s+river+basins&rft.au=Verdin%2C+K+L%3BVerdin%2C+J+P&rft.aulast=Verdin&rft.aufirst=K&rft.date=1999-05-10&rft.volume=218&rft.issue=1-2&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydrology+%28Amsterdam%29&rft.issn=00221694&rft_id=info:doi/10.1016%2FS0022-1694%2899%2900011-6 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Water use; Water management; River basins; Mapping; Topography; Classification; Topology; River Basin Management; Geographical Information Systems; Water Use; USA DO - http://dx.doi.org/10.1016/S0022-1694(99)00011-6 ER - TY - JOUR T1 - Development of a water monitoring council in Texas AN - 17899798; 5137508 AB - Texas has had a formally established Water Monitoring Council for just over a year. Development of the Council, however, began over four years ago and included two major events, the 1996 and 1998 Texas Water Monitoring Congresses. These meetings, in many ways, define the development, status and future directions of Council, as it exists today. This paper describes the development of the Texas Water Monitoring Council to the present and discusses some challenges for its future. Efforts to address the issues encompassed within the scope of "water monitoring" in Texas began in 1995 when several federal and state agencies held informal discussions on ways to work more efficiently together to improve the status of data collection and the usefulness of water information. The forces driving these discussions were the increasing cost of collecting water data in the face of flat or declining funding and the often disparate efforts of many agencies to collect similar, if not redundant, data - data, which in turn, was limited in its availability to external entities. These discussions quickly focused on developing a mechanism to facilitate and build consensus on approaches and responses to water data needs for Texas. The result was formation of an ad hoc group of representatives from federal, state, and regional water resource agencies to plan the Texas Water Monitoring Congress, which convened in Austin in September 1996. JF - Water Resources Impact AU - McWreath, H AU - Loeffler, C AU - Thorkildsen, D AD - U.S. Geological Survey, Ft. Worth, TX, USA, hcmcwrea@usgs.gov Y1 - 1999/05// PY - 1999 DA - May 1999 SP - 11 EP - 13 VL - 1 IS - 3 SN - 1522-3175, 1522-3175 KW - Aqualine Abstracts KW - Water data KW - Monitoring KW - Water quality (Natural waters) KW - Legislation (on industry and trade) KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17899798?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Tributary+flood+impact+on+a+Colorado+River+sand+bar+in+Grand+Canyon%2C+Arizona&rft.au=Hazel%2C+J+E%2C+Jr%3BKaplinski%2C+M+A%3BStevens%2C+L+E%3BAnonymous&rft.aulast=Hazel&rft.aufirst=J&rft.date=1995-01-01&rft.volume=27&rft.issue=6&rft.spage=211&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2015-03-24 N1 - SubjectsTermNotLitGenreText - Water data; Monitoring; Water quality (Natural waters); Legislation (on industry and trade) ER - TY - JOUR T1 - Relative effects of plumage coloration and vegetation density on nest success AN - 17475513; 4676976 AB - Many passerine species are highly dichromatic with brightly-colored males and cryptically-colored females. Bright plumage in males is commonly thought to arise as a result of sexual selection by females such that males with bright coloration possess high fitness. However, bright plumage potentially could expose males to increased predation risk. Consistent with this idea, males of many highly dichromatic passerine species do not incubate. I tested whether brightly-colored males avoid incubation to reduce the probability of visual predators locating their nest. This hypothesis predicts greater hatching success for clutches incubated by cryptically-colored individuals than by brightly-colored individuals. The Northern Cardinal (Cardinalis cardinalis) is a common dichromatic species that breeds throughout the eastern U.S. I placed two button-quail (Turnix sp.) eggs in each of 203 simulated cardinal nests. Dull brown cardboard, simulating a female cardinal, was placed over about half of all clutches. Bright red cardboard, simulating a male cardinal, was placed over the other clutches. Nest success was highest for well-concealed nests (87%) and lowest for nests in open habitat (54%). Nests containing red cardboard did not have significantly lower success than nests with brown cardboard, nor did I detect a significant color x vegetation-density interaction. My analysis may have had insufficient power to detect an effect of color on nest success; alternatively, brightly-colored males that do not incubate may achieve benefits unrelated to predation risk. JF - Condor AU - Miller, M W AD - USGS Patuxent Wildlife Research Center, 11510 American Holly Drive, Laurel, MD 20708-4017, USA, mark_w_miller@usgs.gov Y1 - 1999/05// PY - 1999 DA - May 1999 SP - 255 EP - 261 VL - 101 IS - 2 SN - 0010-5422, 0010-5422 KW - Northern cardinal KW - Animal Behavior Abstracts; Ecology Abstracts KW - Predation KW - Vegetation patterns KW - Coloration KW - Plumage KW - Cardinalis cardinalis KW - Breeding success KW - D 04671:Birds KW - Y 25526:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17475513?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Condor&rft.atitle=Relative+effects+of+plumage+coloration+and+vegetation+density+on+nest+success&rft.au=Miller%2C+M+W&rft.aulast=Miller&rft.aufirst=M&rft.date=1999-05-01&rft.volume=6&rft.issue=6&rft.spage=432&rft.isbn=&rft.btitle=&rft.title=The+Journal+of+Positive+Psychology&rft.issn=17439760&rft_id=info:doi/10.1080%2F17439760.2011.634828 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Cardinalis cardinalis; Plumage; Coloration; Vegetation patterns; Breeding success; Predation ER - TY - JOUR T1 - Vertical Migration and Nighttime Distribution of Adult Bloaters in Lake Michigan AN - 17424918; 4648308 AB - The vertical migration and nighttime vertical distribution of adult bloaters Coregonus hoyi were investigated during late summer in Lake Michigan using acoustics simultaneously with either midwater or bottom trawling. Bloaters remained on or near bottom during the day. At night, bloaters were distributed throughout 30-65 m of water, depending on bottom depth. Shallowest depths of migration were not related to water temperature or incident light. Maximum distances of migration increased with increasing bottom depth. Nighttime midwater densities ranged from 0.00 to 6.61 fish/1,000 m super(3) and decreased with increasing bottom depth. Comparisons of length distributions showed that migrating and nonmigrating bloaters did not differ in size. However, at most sites, daytime bottom catches collected a greater proportion of larger individuals compared with nighttime midwater or bottom catches. Mean target strengths by 5-m strata indicated that migrating bloaters did not stratify by size in the water column at night. Overall, patterns in frequency of empty stomachs and mean digestive state of prey indicated that a portion of the bloater population fed in the water column at night. Bloater diet composition indicated both midwater feeding and bottom feeding. In sum, although a portion of the bloater population fed in the water column at night, bloaters were not limited to feeding at this time. This research confirmed that bloaters are opportunistic feeders and did not fully support the previously proposed hypothesis that bloater vertical migration is driven by the vertically migrating macroinvertebrate the opossom shrimp Mysis relicta.. JF - Transactions of the American Fisheries Society AU - TeWinkel, L M AU - Fleischer, G W AD - Great Lakes Science Center, Biological Resources Division, U.S. Geological Survey, 1451 Green Road, Ann Arbor, Michigan 48105, USA, leslie_tewinkel@usgs.gov Y1 - 1999/05// PY - 1999 DA - May 1999 SP - 459 EP - 474 VL - 128 IS - 3 SN - 0002-8487, 0002-8487 KW - Bloater KW - Animal Behavior Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Diets KW - Vertical migrations KW - Ecological distribution KW - Adults KW - Freshwater KW - Coregonus hoyi KW - Stomach content KW - USA, Michigan L. KW - Feeding behaviour KW - Nighttime KW - Activity patterns KW - Q1 08341:General KW - Y 25655:Fish KW - D 04668:Fish KW - Q1 08423:Behaviour KW - Q1 08425:Nutrition and feeding habits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17424918?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Fisheries+Society&rft.atitle=Vertical+Migration+and+Nighttime+Distribution+of+Adult+Bloaters+in+Lake+Michigan&rft.au=TeWinkel%2C+L+M%3BFleischer%2C+G+W&rft.aulast=TeWinkel&rft.aufirst=L&rft.date=1999-05-01&rft.volume=128&rft.issue=3&rft.spage=459&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Fisheries+Society&rft.issn=00028487&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Diets; Stomach content; Vertical migrations; Feeding behaviour; Ecological distribution; Nighttime; Adults; Activity patterns; Coregonus hoyi; USA, Michigan L.; Freshwater ER - TY - JOUR T1 - Field Test of Two Energetic Models for Yellow Perch AN - 17423944; 4648305 AB - Field data from a population of yellow perch Perca flavescens in Saginaw Bay, Lake Huron, were used to evaluate the ability of two energetic models to predict consumption by yellow perch. Field estimates of daily ration for age-1-4 fish during May through October 1987 and 1988 were compared with independent predictions made by the Wisconsin energetic model and an energetic model developed by Karas and Thoresson. Predictions of daily ration using the Wisconsin model were lower than daily rations estimated from field data for all ages, primarily due to poor model-field agreement at temperatures above 22 degree C. This caused estimates of cumulative consumption from the Wisconsin model to be 25-50% lower than field estimates. Predictions of daily ration by the Karas-Thoresson model agreed with field estimates over a temperature range of 10-26 degree C for age-1-3 yellow perch but not for older fish. Despite improvement, model predictions of cumulative consumption were 2-35% lower than field estimates. Although these tests of predicted and estimated rations may provide insight into which model produced more accurate results, it must be emphasized that field measures of daily ration are also estimates and may be in error, particularly at temperatures above 22 degree C where gastric evacuation rates were estimated. The Karas-Thoresson modification of the Wisconsin energetic model produced better fits to field ration data and is recommended for model applications. JF - Transactions of the American Fisheries Society AU - Schaeffer, J S AU - Haas, R C AU - Diana, J S AU - Breck, JE AD - U.S. Geological Survey, Great Lakes Science Center, 1451 Green Road, Ann Arbor, Michigan 48105, USA, Jeff_schaeffer@usgs.gov Y1 - 1999/05// PY - 1999 DA - May 1999 SP - 414 EP - 435 VL - 128 IS - 3 SN - 0002-8487, 0002-8487 KW - Yellow perch KW - daily ration KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Temperature effects KW - Food consumption KW - Feeding behaviour KW - Bioenergetics KW - USA, Michigan, Huron L., Saginaw Bay KW - Perca flavescens KW - bioenergetics KW - Biological age KW - Freshwater KW - D 04668:Fish KW - Q1 08344:Reproduction and development KW - Q1 08425:Nutrition and feeding habits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17423944?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Transactions+of+the+American+Fisheries+Society&rft.atitle=Field+Test+of+Two+Energetic+Models+for+Yellow+Perch&rft.au=Schaeffer%2C+J+S%3BHaas%2C+R+C%3BDiana%2C+J+S%3BBreck%2C+JE&rft.aulast=Schaeffer&rft.aufirst=J&rft.date=1999-05-01&rft.volume=128&rft.issue=3&rft.spage=414&rft.isbn=&rft.btitle=&rft.title=Transactions+of+the+American+Fisheries+Society&rft.issn=00028487&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Temperature effects; Food consumption; Feeding behaviour; Bioenergetics; Biological age; bioenergetics; Perca flavescens; USA, Michigan, Huron L., Saginaw Bay; Freshwater ER - TY - JOUR T1 - The distribution and relative abundance of ammonia-oxidizing bacteria in lakes of the McMurdo Dry Valley, Antarctica AN - 17392913; 4613728 AB - Marked differences in the concentrations of major ions and cations, macronutrient chemistry and general trophic status exist among the lakes of the McMurdo dry valleys in Antarctica. These differences have been attributed to both variations in stream inputs and in situ lake processes (Priscu, 1995; Lizotte et al., 1996, Spigel and Priscu, 1996). This study examines the role of nitrifying bacteria in nitrogen transformations in these lakes. Applying two polymerase chain reaction (PCR) assays targeting the 16S rRNA genes of ammonia-oxidizing bacteria and the active site of the ammonia monooxygenase gene (amoA), the distribution of ammonia-oxidizers was examined in six Antarctic lakes: Lake Bonney, Lake Hoare, Lake Fryxell and Lake Joyce in the Taylor Valley, Lake Miers in the the Miers Valley and Lake Vanda in the Wright Valley. Using a two stage amplification procedure, ammonia-oxidizers from both the beta and gamma- subclasses of the Proteobacteria were detected and their relative abundances were determined in samples collected from all sites. Ammonia-oxidizers were detected in all lakes sampled. Members of the gamma subclass were only present in the saline lakes. In general, nitrifiers were most abundant at depths above the pycnocline and were usually associated with lower concentrations of NH sub(4) and elevated concentrations of NO sub(3) or NO sub(2). The distribution of nitrifiers suggests that the primary N sub(2)O peak observed in most of the lakes was produced via nitrification. Preliminary data on the rate of nitrification (Priscu et al., 1996) support the occurrence of nitrification and the presence of nitrifiers at the depth intervals where nitrifiers were detected. In all lakes, except Lake Miers, the data indicate that nitrifying bacteria have an important role in the vertical distribution of nitrogen compounds in these systems. JF - Hydrobiologia AU - Voytek, MA AU - Priscu, J C AU - Ward, B B AD - Water Resources Division, U.S. Geological Survey, Reston, VA 20192, U.S.A., mavoytek@usgs.gov Y1 - 1999/05// PY - 1999 DA - May 1999 SP - 113 EP - 130 PB - Kluwer Academic Publishers VL - 401 SN - 0018-8158, 0018-8158 KW - Antarctica, Victoria Land KW - Bacteria KW - ammonia-oxidizing bacteria KW - Water Resources Abstracts; ASFA 1: Biological Sciences & Living Resources; Microbiology Abstracts B: Bacteriology KW - Aquatic bacteria KW - Vertical distribution KW - Cycling Nutrients KW - Polar zones KW - Ammonia KW - Vertical Distribution KW - Freshwater KW - PSE, Antarctica, Victoria Land, McMurdo Dry Valleys KW - Nutrient cycles KW - Proteobacteria KW - Antarctic zone KW - Lakes KW - Nitrification KW - Nutrients (mineral) KW - Q1 08206:Physiology, biochemistry, biophysics KW - SW 0850:Lakes KW - J 02905:Water UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17392913?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Amicrobiologyb&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrobiologia&rft.atitle=The+distribution+and+relative+abundance+of+ammonia-oxidizing+bacteria+in+lakes+of+the+McMurdo+Dry+Valley%2C+Antarctica&rft.au=Voytek%2C+MA%3BPriscu%2C+J+C%3BWard%2C+B+B&rft.aulast=Voytek&rft.aufirst=MA&rft.date=1999-05-01&rft.volume=401&rft.issue=&rft.spage=113&rft.isbn=&rft.btitle=&rft.title=Hydrobiologia&rft.issn=00188158&rft_id=info:doi/10.1023%2FA%3A1003754830988 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Antarctic zone; Vertical distribution; Lakes; Nitrification; Polar zones; Ammonia; Nutrients (mineral); Nutrient cycles; Aquatic bacteria; Bacteria; Cycling Nutrients; Vertical Distribution; Proteobacteria; PSE, Antarctica, Victoria Land, McMurdo Dry Valleys; Freshwater DO - http://dx.doi.org/10.1023/A:1003754830988 ER - TY - JOUR T1 - Effect of high aluminum consumption on mechanics and composition of furculae of free-ranging coots AN - 17328378; 4595061 AB - High levels of ingested Al can affect mechanical properties of bones. Because of the spring action of the furcula during the wingbeat, small changes in the mechanical properties of this bone may have measurable impacts on long-distance flight. We examined the furculae and ingesta of free-ranging American coots (Fulica americana) in San Francisco Bay (California, USA), where they consume a diet high in Al. We measured the spring stiffness and phase angle ( delta ) of the furculae and the concentrations of Al, Ca, F, Mg, and P in both the furculae and ingesta. The ingesta had mean Al concentrations (2,384 mu g/g, dry weight) and Al:P molar ratios (6.4:1) predicted to affect bone integrity but the bone concentrations of Al were near the normal range and the furcula stiffness did not change with Al concentration. The tan delta of the furculae changed with Al concentration but the relationship was weak. The chemical speciation of the ingested Al may have affected its physiologic role and the high mean levels of ingested calcium (71,283 mu g/g, dry weight) very likely neutralized the activity of the Al. Controlled feeding studies have shown that F strengthens avian bones. The bones in our study had molar concentrations of F more than two orders of magnitude greater than Al (170:1) but F appears to have insignificant influence on bone mechanics. The coots in San Francisco Bay apparently are not suffering furcula impairment despite a diet high in Al. JF - Environmental Toxicology and Chemistry AU - Hui, CA AU - Ellers, O AD - USGS-BRD Davis Field Station, Kerr Hall Room 278, One Shields Avenue, University of California, Davis, California 95616-5224, USA, cliff_hui@usgs.gov Y1 - 1999/05// PY - 1999 DA - May 1999 SP - 970 EP - 975 VL - 18 IS - 5 SN - 0730-7268, 0730-7268 KW - American coot KW - Fulica americana KW - USA, California, San Francisco Bay KW - bone mechanics KW - furcula KW - furculae KW - Pollution Abstracts; Toxicology Abstracts KW - Calcium KW - Phosphorus KW - Dietary intake KW - Fluorine KW - Marine environment KW - Diets KW - Ingestion KW - Bone KW - Aluminum KW - Magnesium KW - Aquatic birds KW - X 24164:Pathology KW - P 1000:MARINE POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17328378?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxicologyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Toxicology+and+Chemistry&rft.atitle=Effect+of+high+aluminum+consumption+on+mechanics+and+composition+of+furculae+of+free-ranging+coots&rft.au=Hui%2C+CA%3BEllers%2C+O&rft.aulast=Hui&rft.aufirst=CA&rft.date=1999-05-01&rft.volume=18&rft.issue=5&rft.spage=970&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology+and+Chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Fulica americana; Ingestion; Aquatic birds; Marine environment; Magnesium; Fluorine; Calcium; Diets; Bone; Phosphorus; Aluminum; Dietary intake ER - TY - JOUR T1 - Concentrations of selenium, mercury, and lead in blood of emperor geese in western Alaska AN - 17326055; 4595060 AB - We found up to 10 ppm wet weight of selenium in blood samples collected from emperor geese (Chen canagica) on their breeding grounds on the Yukon-Kuskokwim Delta in western Alaska, USA. Incubating adult females captured in late May through mid-June 1997 had significantly higher concentrations of selenium in their blood (mean = 5.60 ppm) than adult females captured during wing molt in late July 1996 (mean = 2.78 ppm). Females that nested early or were in good body condition had higher concentrations of selenium in their blood than did other nesting females. Blood samples from 4 of 29 goslings had detectable levels of selenium (mean = 0.14 ppm). Our findings suggest that emperor geese are exposed to more selenium in the marine environment of their wintering and staging areas on the Alaska Peninsula than on the breeding grounds. The highest concentration of mercury found in the blood of emperor geese was 0.24 ppm. One bird had a blood lead concentration of 0.67 ppm, but 82% had no detectable lead in their blood, suggesting that lead exposure from the ingestion of lead shot poses little threat for emperor geese in western Alaska, contrary to findings reported for sympatric spectacled eiders (Somateria fischeri). JF - Environmental Toxicology and Chemistry AU - Franson, J C AU - Schmutz, JA AU - Creekmore, L H AU - Fowler, A C AD - U.S. Geological Survey, Biological Resources Division, National Wildlife Health Center, 6006 Schroeder Road, Madison, Wisconsin 53711, USA, chris_franson@usgs.gov Y1 - 1999/05// PY - 1999 DA - May 1999 SP - 965 EP - 969 VL - 18 IS - 5 SN - 0730-7268, 0730-7268 KW - Chen canagica KW - Emperor goose KW - USA, Alaska, Yukon-Kuskokwim Delta KW - blood levels KW - Pollution Abstracts; Toxicology Abstracts KW - Contamination KW - Heavy metals KW - Lead KW - Marine environment KW - Seasonal variations KW - Wildlife KW - Mercury KW - Blood analysis KW - Aquatic birds KW - Selenium KW - USA, Alaska KW - Bioaccumulation KW - X 24166:Environmental impact KW - P 1000:MARINE POLLUTION KW - X 24163:Metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17326055?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxicologyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Toxicology+and+Chemistry&rft.atitle=Concentrations+of+selenium%2C+mercury%2C+and+lead+in+blood+of+emperor+geese+in+western+Alaska&rft.au=Franson%2C+J+C%3BSchmutz%2C+JA%3BCreekmore%2C+L+H%3BFowler%2C+A+C&rft.aulast=Franson&rft.aufirst=J&rft.date=1999-05-01&rft.volume=18&rft.issue=5&rft.spage=965&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology+and+Chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Chen canagica; USA, Alaska; Lead; Aquatic birds; Selenium; Marine environment; Blood analysis; Seasonal variations; Contamination; Bioaccumulation; Heavy metals; Mercury; Wildlife ER - TY - JOUR T1 - Relative importance of male and territory quality in pairing success of male rock ptarmigan (Lagopus mutus) AN - 17226965; 4502996 AB - We studied pairing success in male rock ptarmigan (Lagopus mutus) in northern Alaska to learn whether males obtaining more females possessed phenotypic traits that influenced female choice directly, whether these traits permitted males to obtain territories favored by females, or whether both processes occurred. The number of females per male varied from zero to three. Several male and territory traits were significantly correlated with number of females per male. We used multiple regression to obtain a single measure of male quality and a single measure of territory quality. These measures of male and territory quality correlated with each other and with male pairing success. We used path analysis to separate direct effects of male quality on pairing success from indirect effects due to high-quality males obtaining high-quality territories. Both direct and indirect pathways had significant effects on pairing success, and direct and indirect effects of male traits on pairing success were about equal. This study illustrates an analytical approach for estimating the relative importance of direct and indirect causal relationships in natural systems. JF - Behavioral Ecology and Sociobiology AU - Bart, J AU - Earnst, S L AD - Forest and Rangeland Ecosystem Science Center Snake River Field Station, USGS, 970 Lusk Street Boise State University, Boise, ID 83706, USA, jbart@eagle.idbsu.edu Y1 - 1999/04/15/ PY - 1999 DA - 1999 Apr 15 SP - 355 EP - 359 PB - Springer-Verlag VL - 45 IS - 5 SN - 0340-5443, 0340-5443 KW - Alaska KW - Rock ptarmigan KW - USA, Alaska KW - Genetics Abstracts; Animal Behavior Abstracts; Ecology Abstracts KW - Lagopus mutus KW - Pair bond KW - Territory KW - Mating KW - Mate selection KW - Behavioral genetics KW - Territorial behavior KW - D 04671:Birds KW - G 07280:Behavioral genetics KW - Y 25426:Birds KW - G 07377:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17226965?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Behavioral+Ecology+and+Sociobiology&rft.atitle=Relative+importance+of+male+and+territory+quality+in+pairing+success+of+male+rock+ptarmigan+%28Lagopus+mutus%29&rft.au=Bart%2C+J%3BEarnst%2C+S+L&rft.aulast=Bart&rft.aufirst=J&rft.date=1999-04-15&rft.volume=45&rft.issue=5&rft.spage=355&rft.isbn=&rft.btitle=&rft.title=Behavioral+Ecology+and+Sociobiology&rft.issn=03405443&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Lagopus mutus; Territory; Mate selection; Mating; Territorial behavior; Behavioral genetics; Pair bond ER - TY - JOUR T1 - Probabilistic seismic hazard analysis for Carraizo and LaPlata dams, Puerto Rico AN - 51197743; 2000-056758 JF - Seismological Research Letters AU - LaForge, R AU - Malone, Steve D Y1 - 1999/04// PY - 1999 DA - April 1999 SP - 266 PB - Seismological Society of America, Eastern Section, [Berkeley, CA] VL - 70 IS - 2 SN - 0895-0695, 0895-0695 KW - Greater Antilles KW - subduction zones KW - geologic hazards KW - statistical analysis KW - magnitude KW - West Indies KW - Caribbean region KW - environmental analysis KW - Antilles KW - Puerto Rico Trench KW - Puerto Rico KW - dams KW - ground motion KW - risk assessment KW - probability KW - North Atlantic KW - earthquakes KW - Atlantic Ocean KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51197743?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Seismological+Research+Letters&rft.atitle=Probabilistic+seismic+hazard+analysis+for+Carraizo+and+LaPlata+dams%2C+Puerto+Rico&rft.au=LaForge%2C+R%3BMalone%2C+Steve+D&rft.aulast=LaForge&rft.aufirst=R&rft.date=1999-04-01&rft.volume=70&rft.issue=2&rft.spage=266&rft.isbn=&rft.btitle=&rft.title=Seismological+Research+Letters&rft.issn=08950695&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - SSA-99, 94th annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - PubXState - CA] N1 - Last updated - 2012-06-07 N1 - CODEN - EAQNAT N1 - SubjectsTermNotLitGenreText - Antilles; Atlantic Ocean; Caribbean region; dams; earthquakes; environmental analysis; geologic hazards; Greater Antilles; ground motion; magnitude; North Atlantic; probability; Puerto Rico; Puerto Rico Trench; risk assessment; statistical analysis; subduction zones; West Indies ER - TY - JOUR T1 - Deepwater Gulf of Mexico and the MMS AN - 50908319; 2000-046705 AB - The western and central portions of the northern Gulf of Mexico constitute one of the world's major oil and gas producing areas and have provided a steady and reliable source of these resources for more than 50 years. The U.S. Minerals Management Service (MMS) is mandated to manage the development of that country's OCS oil and gas resources, while also ensuring safe operations and protecting the human and natural environment. The level of Gulf of Mexico OCS deepwater activities, both drilling and production, has steadily increased, and the discoveries in the deepwater tracts have begun to stack up. Very high rates of production by prolific deepwater wells have convinced operators that the deepwater Gulf of Mexico is a sound investment, and the trend continues to show signs of increase. JF - Leading Edge (Tulsa, OK) AU - Regg, Jim AU - Sparkman, Gene Y1 - 1999/04// PY - 1999 DA - April 1999 SP - 509 EP - 510 PB - Society of Exploration Geophysicists, Tulsa, OK VL - 18 IS - 4 SN - 1070-485X, 1070-485X KW - technology KW - petroleum KW - deep-sea environment KW - production KW - Gulf of Mexico KW - outer shelf KW - marine methods KW - marine environment KW - U. S. Mineral Management Service KW - drilling KW - continental shelf KW - North Atlantic KW - Atlantic Ocean KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50908319?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Leading+Edge+%28Tulsa%2C+OK%29&rft.atitle=Deepwater+Gulf+of+Mexico+and+the+MMS&rft.au=Regg%2C+Jim%3BSparkman%2C+Gene&rft.aulast=Regg&rft.aufirst=Jim&rft.date=1999-04-01&rft.volume=18&rft.issue=4&rft.spage=509&rft.isbn=&rft.btitle=&rft.title=Leading+Edge+%28Tulsa%2C+OK%29&rft.issn=1070485X&rft_id=info:doi/10.1190%2F1.1438325 L2 - http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1745-6592 LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. Reference includes data supplied by Society of Exploration Geophysicists, Tulsa, OK, United States N1 - Date revised - 2000-01-01 N1 - PubXState - OK N1 - Document feature - sect. N1 - Last updated - 2016-10-25 N1 - SubjectsTermNotLitGenreText - Atlantic Ocean; continental shelf; deep-sea environment; drilling; Gulf of Mexico; marine environment; marine methods; North Atlantic; outer shelf; petroleum; production; technology; U. S. Mineral Management Service DO - http://dx.doi.org/10.1190/1.1438325 ER - TY - JOUR T1 - Evaluation of waterfowl conservation under the North American Waterfowl Management Plan AN - 17439970; 4658791 AB - In 1986, the North American Waterfowl Management Plan (Plan) was signed by the U.S. Secretary of the Interior and the Canadian Minister of the Environment, with a goal of restoring waterfowl populations to levels of the 1970s via habitat conservation. Central to the Plan is a set of ambitious continental population goals and habitat objectives to be met through broad-based public-private partnerships. Inadequate attention has been paid to evaluation of the Plan, despite the fact that Plan delivery can be enhanced via improved understanding of the effects of habitat conservation on waterfowl population dynamics. Several factors confound the effort to evaluate the Plan at regional and continental levels, including difficulties in accounting for national land-use policies. To date, evaluation has proceeded along 2 avenues of investigation: (1) the study of conservation actions at local-regional levels, and (2) statistical assessment of Plan assumptions. Among other things, results thus far indicate duck production from the U.S. Northern Great Plains has increased in recent years, and intensive treatments such as planted cover have had positive effects on local reproductive success. Many duck species currently exceed Plan population goals; however, population levels of some species, most notably northern pintail (Anas acuta), remain below expectations based on historic relationships with precipitation. Management implications include the need for ongoing and more carefully prioritized conservation efforts, broader partnerships, and improved understanding of the linkages between habitats and biological processes. Delivery of the Plan must involve collaboration among the Continental Evaluation Team, joint venture partners, the Adaptive Management and Assessment Team of the U.S. Fish and Wildlife Service, and other conservation groups. Although the challenges and projected costs of Plan conservation efforts are considerable, the long-term potential benefits to waterfowl conservation are great. JF - Journal of Wildlife Management AU - Williams, B K AU - Koneff, MD AU - Smith, DA AD - U.S. Geological Survey, Biological Resources Division, 12201 Sunrise Valley Drive, Reston, VA 22092, USA, byron_ken_williams@usgs.gov Y1 - 1999/04// PY - 1999 DA - Apr 1999 SP - 417 EP - 440 VL - 63 IS - 2 SN - 0022-541X, 0022-541X KW - Ducks KW - Geese KW - North American Waterfowl Management Plan KW - Swans KW - evaluation KW - ASFA 1: Biological Sciences & Living Resources; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 2: Ocean Technology Policy & Non-Living Resources; Ecology Abstracts KW - North America KW - Wildlife management KW - Resource management KW - Habitat improvement KW - Anatidae KW - Nature conservation KW - Environmental legislation KW - Aquatic birds KW - Environmental protection KW - D 04700:Management KW - Q5 08523:Conservation, wildlife management and recreation KW - Q2 09123:Conservation KW - Q1 08604:Stock assessment and management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17439970?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Management&rft.atitle=Evaluation+of+waterfowl+conservation+under+the+North+American+Waterfowl+Management+Plan&rft.au=Williams%2C+B+K%3BKoneff%2C+MD%3BSmith%2C+DA&rft.aulast=Williams&rft.aufirst=B&rft.date=1999-04-01&rft.volume=63&rft.issue=2&rft.spage=417&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Management&rft.issn=0022541X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Resource management; Habitat improvement; Nature conservation; Environmental legislation; Environmental protection; Aquatic birds; Wildlife management; Anatidae; North America ER - TY - JOUR T1 - Wood duck brood movements and habitat use on prairie rivers in South Dakota AN - 17437131; 4658816 AB - Wood duck (Aix sponsa) populations have been increasing in the Central Flyway, but little is known about wood duck brood rearing in prairie ecosystems. We compared movements and habitat use of radiomarked female wood ducks with broods in South Dakota on 2 rivers with contrasting prairie landscapes. The perennial Big Sioux River had a broad floodplain and riparian forest, whereas the intermittent Maple River had emergent vegetation along the river channel. Movements between nest sites and brood-rearing areas were longer on the Maple River than on the Big Sioux River (P = 0.02) and were among the longest reported for wood duck broods. Movements on the Big Sioux River were longer in 1992 (P = 0.01), when the floodplain was dry, than in 1993 or 1994. Before flooding occurred on the Big Sioux River, broods used semipermanent wetlands and tributaries outside the floodplain; thereafter, females selected forested wetlands along the river. Broods on the Maple River used emergent vegetation along the river channel throughout the study. Because median length of travel to brood-rearing areas was 2-3 km, we recommend maintenance of brood-rearing habitat every 3-5 km along prairie rivers. Wildlife managers should encourage landowners to retain riparian vegetation along perennial rivers and emergent vegetation along intermittent streams to provide brood-rearing habitat during wet and dry cycles. JF - Journal of Wildlife Management AU - Granfors, DA AU - Flake, L D AD - U.S. Geological Survey, Northern Prairie Wildlife Research Center, 8711 37th Street SE, Jamestown, ND 58401, USA, diane_granfors@usgs.gov Y1 - 1999/04// PY - 1999 DA - Apr 1999 SP - 639 EP - 649 VL - 63 IS - 2 SN - 0022-541X, 0022-541X KW - Wood duck KW - Animal Behavior Abstracts; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - USA, South Dakota KW - Local movements KW - Wildlife management KW - Aix sponsa KW - Nesting KW - Movements KW - Freshwater KW - Habitat selection KW - Activity patterns KW - Habitat KW - D 04700:Management KW - Y 25506:Birds KW - Q1 08423:Behaviour UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17437131?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Management&rft.atitle=Wood+duck+brood+movements+and+habitat+use+on+prairie+rivers+in+South+Dakota&rft.au=Granfors%2C+DA%3BFlake%2C+L+D&rft.aulast=Granfors&rft.aufirst=DA&rft.date=1999-04-01&rft.volume=63&rft.issue=2&rft.spage=639&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Management&rft.issn=0022541X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Local movements; Nesting; Habitat; Activity patterns; Habitat selection; Wildlife management; Movements; Aix sponsa; USA, South Dakota; Freshwater ER - TY - JOUR T1 - Status of the interior population of least tern AN - 17437087; 4658795 AB - Because the interior population of least tern (Sterna antillarum) was listed as endangered in 1985, information on population status, trends, and productivity is needed to guide management of this population. We compared recent estimates (1986-95) of tern numbers to objectives identified in the Recovery Plan, used linear regression to estimate trends for local areas (e.g., river segment, reservoir), and route regression to estimate trends for larger segments of the breeding range. We also compared observed estimates of fledging success to the minimum value (0.51 fledglings/pair) thought necessary for population maintenance to determine whether observed productivity could support recent population trends. Although the interior population exceeded the recovery goal of 7,000 birds in 1995, this was due to large increases in tern numbers along a 901-km stretch of the Lower Mississippi River, and numbers for most breeding areas have not reached recovery levels. Trend ( lambda ) was significant for 7 (5 positive, 2 negative) of 31 local areas for which trend could be calculated. At larger scales, lambda was not discernibly different from 1 for the Platte and Missouri river drainages, but lambda was >1 for the Lower Mississippi River drainage. Overall trend for the interior population was 1.090 (95% CI = 1.056-1.111), and 1.024 (95% CI = 0.998-1.045) when data from the Lower Mississippi River were excluded. Fledging success ranged from 0.00 to 2.33 fledglings/pair, and was <0.51 in 9 areas. Based on available fledging success estimates, there is no evidence that productivity within the interior range caused recent increases in tern numbers. Improved rangewide monitoring of numbers and productivity, and information on movements and postfledging survival, are needed to assess recovery criteria and management options for this population of least terns. JF - Journal of Wildlife Management AU - Kirsch, E M AU - Sidle, J G AD - U.S. Geological Survey, Upper Midwest Environmental Sciences Center, P.O. Box 818, La Crosse, WI 54603, USA, eileen_kirsch@usgs.gov Y1 - 1999/04// PY - 1999 DA - Apr 1999 SP - 470 EP - 483 VL - 63 IS - 2 SN - 0022-541X, 0022-541X KW - Least tern KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Marine KW - USA KW - Wildlife management KW - Sterna antillarum KW - Nature conservation KW - Brackish KW - Rare species KW - Freshwater KW - Population dynamics KW - Population number KW - D 04700:Management KW - Q1 08442:Population dynamics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17437087?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Wildlife+Management&rft.atitle=Status+of+the+interior+population+of+least+tern&rft.au=Kirsch%2C+E+M%3BSidle%2C+J+G&rft.aulast=Kirsch&rft.aufirst=E&rft.date=1999-04-01&rft.volume=63&rft.issue=2&rft.spage=470&rft.isbn=&rft.btitle=&rft.title=Journal+of+Wildlife+Management&rft.issn=0022541X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Nature conservation; Rare species; Population dynamics; Population number; Wildlife management; Sterna antillarum; USA; Marine; Brackish; Freshwater ER - TY - JOUR T1 - Persistence of high lead concentrations and associated effects in tundra swans captured near a mining and smelting complex in northern Idaho AN - 17435214; 4652068 AB - Lead poisoning of waterfowl, particularly tundra swans (Cygnus columbianus), has been documented in the Coeur d'Alene River Basin in northern Idaho for nearly a century. Over 90% of the lead-poisoned tundra swans in this area that were necropsied have no ingested lead shot. Spent lead shot from hunting activities over the years is therefore a minor source of lead in these swans. The migrating swans accumulated lethal burdens of lead from ingestion of sediments and aquatic vegetation during a short stopover in the spring. The lead originated from mining and smelting activities. Lead concentrations and physiological characteristics of blood were compared in swans captured in swim-in traps, with moribund swans caught by hand in the lead-contaminated area in 1987 and 1994-1995 and with birds captured by night-lighting in reference areas in 1994-1995. Blood lead concentrations in swans were highest in moribund birds (3.3 mu g g super(-1) in 1987 and 1995), intermediate in those trapped in the contaminated area (0.82 mu g g super(-1) in 1987 and 1.8 mu g g super(-1) in 1995), and lowest (0.11 mu g g super(-1)) in those trapped in the reference areas. delta -aminolevulinic acid dehydratase (ALAD) was significantly inhibited in swans from the contaminated area. Hematocrit and hemoglobin were significantly depressed only in moribund swans. Of the 19 swans found moribund and euthanized, 18 were classified as having lead toxicosis on the basis of lead levels in blood (1.3 to 9.6 mu g g super(-1)) and livers (6 to 40 mu g g super(-1)) and necropsy findings. The 19th swan had aspergillosis. There was no evidence that effects of lead on tundra swans had diminished from 1987 to 1995. JF - Ecotoxicology AU - Blus, L J AU - Henny, C J AU - Hoffman, D J AU - Sileo, L AU - Audet, D J AD - USGS, Forest and Rangeland Ecosystem Science Center, 3200 SW Jefferson Way, Corvallis, OR 97331, USA, blus@proaxis.com Y1 - 1999/04// PY - 1999 DA - Apr 1999 SP - 125 EP - 132 VL - 8 IS - 2 SN - 0963-9292, 0963-9292 KW - Cygnus columbianus KW - Lead KW - Tundra swan KW - USA, Idaho KW - tundra KW - ASFA 3: Aquatic Pollution & Environmental Quality; Ecology Abstracts; Pollution Abstracts; Toxicology Abstracts KW - Historical account KW - Heavy metals KW - Smelting KW - Poisoning KW - Ingestion KW - Smelters KW - Water pollution KW - Blood levels KW - Industrial wastes KW - Bioaccumulation KW - Tundra KW - Liver KW - Wetlands KW - Mining KW - Industrial pollution KW - Swamps KW - Aquatic birds KW - Q5 08503:Characteristics, behavior and fate KW - D 04803:Pollution effects KW - P 2000:FRESHWATER POLLUTION KW - X 24166:Environmental impact KW - P 6000:TOXICOLOGY AND HEALTH KW - X 24163:Metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17435214?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecotoxicology&rft.atitle=Persistence+of+high+lead+concentrations+and+associated+effects+in+tundra+swans+captured+near+a+mining+and+smelting+complex+in+northern+Idaho&rft.au=Blus%2C+L+J%3BHenny%2C+C+J%3BHoffman%2C+D+J%3BSileo%2C+L%3BAudet%2C+D+J&rft.aulast=Blus&rft.aufirst=L&rft.date=1999-04-01&rft.volume=8&rft.issue=2&rft.spage=125&rft.isbn=&rft.btitle=&rft.title=Ecotoxicology&rft.issn=09639292&rft_id=info:doi/10.1023%2FA%3A1008918819661 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Bioaccumulation; Industrial wastes; Wetlands; Lead; Aquatic birds; Heavy metals; Tundra; Mining; Smelters; Swamps; Water pollution; Historical account; Smelting; Liver; Poisoning; Industrial pollution; Ingestion; Blood levels DO - http://dx.doi.org/10.1023/A:1008918819661 ER - TY - JOUR T1 - Methylmercury Content of Eggs in Yellow Perch Related to Maternal Exposure in Four Wisconsin Lakes AN - 17379871; 4590296 AB - We examined the influence of maternal mercury and selected lacustrine variables on the mercury content of eggs from yellow perch (Perca flavescens). Total mercury, methylmercury, and inorganic mercury were determined in eggs and carcasses (less eggs) from three seepage lakes with a pH range of 6.1-7.0 and a fourth lake in which pH was experimentally increased from 5.5 to 6.8 by addition of alkaline groundwater. The concentration of total mercury in eggs was strongly correlated with that in the maternal carcass. Concentrations and burdens of mercury in eggs and carcasses were inversely correlated with lake water pH, acid-neutralizing capacity, calcium, and dissolved organic carbon. In eggs containing more than 30 ng/g dry weight (4.5 ng/g wet weight) of total mercury, methylmercury averaged 91% of total mercury and ranged from 85% to 96%. Mean burdens of total mercury in individual eggs varied greatly among lakes (range, 2.3-63 pg), and the egg mass averaged 1.9% of the whole-body burden. We conclude that exposure of the developing yellow perch embryo to methylmercury is strongly affected by maternal bioaccumulation, which can vary substantially among and within lakes; however, the toxicological significance of the observed exposure of embryos to methylmercury is unclear. JF - Environmental Science & Technology AU - Hammerschmidt, C R AU - Wiener, J G AU - Frazier, B E AU - Rada, R G AD - Upper Midwest Environmental Sciences Center, Biological Resources Division, U.S. Geological Survey, 2630 Fanta Reed Road, La Crosse, WI 54603, USA, james_wiener@usgs.gov Y1 - 1999/04/01/ PY - 1999 DA - 1999 Apr 01 SP - 999 EP - 1003 VL - 33 IS - 7 SN - 0013-936X, 0013-936X KW - Perca flavescens KW - USA, Wisconsin KW - Yellow perch KW - Toxicology Abstracts; Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - Fish eggs KW - Pollution effects KW - Eggs KW - Fish Eggs KW - Pisces KW - Perch KW - Lakes KW - Dimethylmercury KW - Embryos KW - pH KW - Freshwater pollution KW - Methylmercury KW - Methyl mercury KW - Maternal effects KW - Hydrogen Ion Concentration KW - Bioaccumulation KW - Surface-groundwater Relations KW - Water Pollution Effects KW - Mercury KW - Groundwater pollution KW - Freshwater organisms KW - X 24166:Environmental impact KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - Q5 08504:Effects on organisms KW - X 24163:Metabolism UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17379871?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Methylmercury+Content+of+Eggs+in+Yellow+Perch+Related+to+Maternal+Exposure+in+Four+Wisconsin+Lakes&rft.au=Hammerschmidt%2C+C+R%3BWiener%2C+J+G%3BFrazier%2C+B+E%3BRada%2C+R+G&rft.aulast=Hammerschmidt&rft.aufirst=C&rft.date=1999-04-01&rft.volume=33&rft.issue=7&rft.spage=999&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes980948h LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Methyl mercury; Bioaccumulation; Fish eggs; Groundwater pollution; Pollution effects; Lakes; Maternal effects; Dimethylmercury; Eggs; Freshwater pollution; Pisces; Methylmercury; Mercury; Freshwater organisms; Embryos; pH; Fish Eggs; Perch; Surface-groundwater Relations; Water Pollution Effects; Hydrogen Ion Concentration DO - http://dx.doi.org/10.1021/es980948h ER - TY - JOUR T1 - Seasonal and Annual Load of Herbicides from the Mississippi River Basin to the Gulf of Mexico AN - 17377506; 4590293 AB - Water samples collected from rivers in the Mississippi River Basin were analyzed for selected herbicides to evaluate their discharge to the Gulf of Mexico and to identify their predominant source areas within the basin. Samples were collected from the Mississippi River at Baton Rouge, LA from 1991 to 1997 and from sites on the upper Mississippi, the Missouri, and the Ohio Rivers from 1996 to 1997. Atrazine, metolachlor, and alachlor ESA (an alachlor metabolite) were the most frequently detected herbicides in the Mississippi River at Baton Rouge, and, in general, were present in the largest concentrations. The peak annual herbicide load was in 1993 when about 640 metric tons of atrazine, 320 metric tons of cyanazine, 215 metric tons of metolachlor, 53 metric tons of simazine, and 50 metric tons of alachlor were discharged to the Gulf of Mexico. The annual load of atrazine and cyanazine was generally 1-3% of the amount annually applied in the Mississippi River drainage basin; the annual load of acetochlor, alachlor, and metolachlor was generally less than 1%. During 1996-1997 the Ohio River contributed about 50% of the discharge and 50% or more of the herbicide load to the Gulf of Mexico. JF - Environmental Science & Technology AU - Clark, G M AU - Goolsby, DA AU - Battaglin, WA AD - U.S. Geological Survey, 230 Collins Road, Boise, ID 83702, USA, gmclark@usgs.gov Y1 - 1999/04/01/ PY - 1999 DA - 1999 Apr 01 SP - 981 EP - 986 VL - 33 IS - 7 SN - 0013-936X, 0013-936X KW - Mexico Gulf KW - USA, Louisiana, Baton Rouge KW - USA, Mississippi R. KW - alachlor KW - metolachlor KW - seasonal variations KW - Pollution Abstracts; Oceanic Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - Water sampling KW - River Wash KW - Drainage KW - Catchment Areas KW - Pollution dispersion KW - River discharge KW - Pollution Load KW - Herbicides KW - Drainage Patterns KW - Pollution surveys KW - Water pollution KW - ASW, Mexico Gulf KW - Marine pollution KW - Atrazine KW - Hydrology KW - Seasonal variations KW - Runoff KW - Q5 08503:Characteristics, behavior and fate KW - P 1000:MARINE POLLUTION KW - SW 3020:Sources and fate of pollution KW - O 4060:Pollution - Environment UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17377506?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Appraisal+Journal&rft.atitle=The+Appraisal+of+Food+Service+Facilities&rft.au=Rushmore%2C+Stephen&rft.aulast=Rushmore&rft.aufirst=Stephen&rft.date=1980-07-01&rft.volume=48&rft.issue=3&rft.spage=354&rft.isbn=&rft.btitle=&rft.title=The+Appraisal+Journal&rft.issn=00037087&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Pollution dispersion; River discharge; Herbicides; Pollution surveys; Water pollution; Water sampling; Marine pollution; Drainage; Atrazine; Hydrology; Seasonal variations; River Wash; Catchment Areas; Pollution Load; Drainage Patterns; Runoff; ASW, Mexico Gulf DO - http://dx.doi.org/10.1021/es980962u ER - TY - JOUR T1 - Stream temperatures and the elevational distribution of redband trout in southwestern Idaho AN - 17310353; 4560455 AB - During July to September 1994-1996, I examined water temperatures at the lower end of the elevational distribution of redband trout (Oncorhynchus mykiss gairdneri) in 4 streams in the Owyhee Mountains in south-western Idaho. Maximum water temperatures in Castle, Shoofly, Little Jacks, and Big Jacks creeks during low flows during a drought in 1994 ranged from 26.7 degree C to 29.0 degree C. Water temperatures fluctuated 9.5-11 degree C during the 24-h period maximum temperatures were observed. Stream flows at the lower end of Big Jacks and Little Jacks creeks in 1994 were 5 km downstream of the lowest pool inhabited by trout in 1995-96. JF - Great Basin Naturalist AU - Zoellick, B W AD - U.S. Bureau of Land Management, Lower Snake River District, 3948 Development Ave., Boise, ID 83705, USA Y1 - 1999/04// PY - 1999 DA - Apr 1999 SP - 136 EP - 143 VL - 59 IS - 2 SN - 0017-3614, 0017-3614 KW - USA, Idaho KW - elevational distribution KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Water flow KW - Ecological distribution KW - Oncorhynchus mykiss gairdneri KW - Heat tolerance KW - Height KW - Water temperature KW - Temperature gradients KW - Streams KW - Stream flow KW - Mountains KW - USA, Idaho, Owyhee Mtns. KW - Q1 08422:Environmental effects KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17310353?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Great+Basin+Naturalist&rft.atitle=Stream+temperatures+and+the+elevational+distribution+of+redband+trout+in+southwestern+Idaho&rft.au=Zoellick%2C+B+W&rft.aulast=Zoellick&rft.aufirst=B&rft.date=1999-04-01&rft.volume=59&rft.issue=2&rft.spage=136&rft.isbn=&rft.btitle=&rft.title=Great+Basin+Naturalist&rft.issn=00173614&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Mountains; Water flow; Ecological distribution; Heat tolerance; Height; Water temperature; Temperature gradients; Streams; Stream flow; Oncorhynchus mykiss gairdneri; USA, Idaho, Owyhee Mtns. ER - TY - JOUR T1 - Movement Patterns and Population Characteristics of the Karner Blue Butterfly (Lycaeides melissa samuelis) at Indiana Dunes National Lakeshore AN - 17247185; 4524676 AB - We conducted a three-year mark-release-recapture study of the endangered Karner blue butterfly (Lycaeides melissa samuelis Nabokov) at Indiana Dunes National Lakeshore to describe the butterfly's movement patterns and to assess seasonal changes in the Karner blue's population structure. Estimated mean Karner blue adult life span was less than 3.5 days. Populations exhibited protandry and about a 2:1 male:female sex ratio at population peak within a brood. Ranges, or maximum distances moved by individual butterflies, were typically less than 100 m. Maximum ranges were less than 1 km. These distances are similar to those reported for other lycaenid butterflies and from other studies of the Karner blue in the midwestern United States. At two sites, fewer than 2% of adults had ranges greater than 300 m, while at a third site 4.3% of adults had ranges greater than 300 m. Given typical subpopulation sizes these movement percentages suggest that few adults per generation will move between subpopulations separated by more than 300 m. Movement of individuals between subpopulation sites is important for maintaining genetic diversity within a metapopulation and for recolonizing areas following local extinctions. Therefore, prudent conservation planning should aim for a landscape with habitat patches suitable for Karner blue butterfly occupancy separated by less than 300 m. JF - Natural Areas Journal AU - Knutson, R L AU - Kwilosz, J R AU - Grundel, R AD - U.S. Geological Survey, Biological Resources Division, 1100 North Mineral Springs Road, Porter, IN 46304, USA, Ralph_Grundel@usgs.gov Y1 - 1999/04// PY - 1999 DA - Apr 1999 SP - 109 EP - 120 VL - 19 IS - 2 SN - 0885-8608, 0885-8608 KW - Blues KW - Lepidoptera KW - USA, Indiana KW - Entomology Abstracts; Ecology Abstracts KW - Lycaenidae KW - Life history KW - Movements KW - Population structure KW - Lycaeides melissa samuelis KW - Z 05205:Populations & general ecology KW - D 04659:Insects UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17247185?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Natural+Areas+Journal&rft.atitle=Movement+Patterns+and+Population+Characteristics+of+the+Karner+Blue+Butterfly+%28Lycaeides+melissa+samuelis%29+at+Indiana+Dunes+National+Lakeshore&rft.au=Knutson%2C+R+L%3BKwilosz%2C+J+R%3BGrundel%2C+R&rft.aulast=Knutson&rft.aufirst=R&rft.date=1999-04-01&rft.volume=19&rft.issue=2&rft.spage=109&rft.isbn=&rft.btitle=&rft.title=Natural+Areas+Journal&rft.issn=08858608&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - SuppNotes - Theme issue: The Indiana dunes ecosystem. N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Lycaeides melissa samuelis; Lycaenidae; Movements; Life history; Population structure ER - TY - JOUR T1 - Transport of Diazinon in the San Joaquin River Basin, California AN - 16127930; 4547110 AB - Most of the application of the organophosphate insecticide diazinon in the San Joaquin River Basin occurs in winter to control wood-boring insects in dormant almond orchards. A federal-state collaborative study found that diazinon accounted for most of the observed toxicity of San Joaquin River water in February 1993. Previous studies focused mainly on west-side inputs to the San Joaquin River. In this 1994 study, the three major east-side tributaries to the San Joaquin River - the Merced, Tuolumne, and Stanislaus rivers - and a downstream site on the San Joaquin River were sampled throughout the hydrographs of a late January and an early February storm. In both storms, the Tuolumne River had the highest concentrations of diazinon and transported the largest load of the three tributaries. The Stanislaus River was a small source in both storms. On the basis of previous storm sampling and estimated travel times, ephemeral west-side creeks probably were the main diazinon source early in the storms, whereas the Tuolumne and Merced Rivers and east-side drainages directly to the San Joaquin River were the main sources later. Although 74 percent of diazinon transport in the San Joaquin River during 1991-1993 occurred in January and February, transport during each of the two 1994 storms was only 0.05 percent of the amount applied during preceding dry periods. Nevertheless, some of the diazinon concentrations in the San Joaquin River during the January storm exceeded 0.35 mu g/L, a concentration shown to be acutely toxic to water fleas. On the basis of this study and previous studies, diazinon concentrations and streamflow are highly variable during January and February storms, and frequent sampling is required to evaluate transport in the San Joaquin River Basin. JF - Journal of the American Water Resources Association AU - Kratzer, C R AD - U.S. Geological Survey, Placer Hall, 6000 J Street, Sacramento, California 95819-6129, USA, ckratzer@usgs.gov Y1 - 1999/04// PY - 1999 DA - Apr 1999 SP - 379 VL - 35 IS - 2 SN - 1093-474X, 1093-474X KW - USA, California, San Joaquin R. KW - USA, California, San Joaquin Valley KW - diazinon KW - Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Water Resources Abstracts KW - Storm Runoff KW - Pesticides (Organophosphorus) KW - Water Pollution Sources KW - Path of Pollutants KW - Organophosphates KW - Pollution (Nonpoint sources) KW - Pollution dispersion KW - Basins KW - Freshwater KW - Storms KW - Organophosphorus Pesticides KW - Insecticides KW - Hydrology KW - Freshwater pollution KW - Rivers KW - Pesticides (see also Bactericides, Weedkillers) KW - Nonpoint Pollution Sources KW - River basins KW - Toxicity KW - Water pollution KW - USA, California, San Joaquin R. basin KW - Toxicity (see also Lethal limits) KW - Pollution (Water) KW - Diazinon KW - Runoff KW - Q5 01503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - AQ 00002:Water Quality UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16127930?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Water+Resources+Association&rft.atitle=Transport+of+Diazinon+in+the+San+Joaquin+River+Basin%2C+California&rft.au=Kratzer%2C+C+R&rft.aulast=Kratzer&rft.aufirst=C&rft.date=1999-04-01&rft.volume=35&rft.issue=2&rft.spage=379&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Water+Resources+Association&rft.issn=1093474X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 1999-12-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Insecticides; Pollution dispersion; River basins; Water pollution; Rivers; Organophosphates; Hydrology; Basins; Storms; Diazinon; Freshwater pollution; Pesticides (see also Bactericides, Weedkillers); Pesticides (Organophosphorus); Pollution (Nonpoint sources); Toxicity (see also Lethal limits); Pollution (Water); Runoff; Organophosphorus Pesticides; Storm Runoff; Path of Pollutants; Water Pollution Sources; Nonpoint Pollution Sources; Toxicity; USA, California, San Joaquin Valley; USA, California, San Joaquin R. basin; Freshwater ER - TY - JOUR T1 - Potential effects of gas hydrate on human welfare. AN - 69663847; 10097052 AB - For almost 30 years. serious interest has been directed toward natural gas hydrate, a crystalline solid composed of water and methane, as a potential (i) energy resource, (ii) factor in global climate change, and (iii) submarine geohazard. Although each of these issues can affect human welfare, only (iii) is considered to be of immediate importance. Assessments of gas hydrate as an energy resource have often been overly optimistic, based in part on its very high methane content and on its worldwide occurrence in continental margins. Although these attributes are attractive, geologic settings, reservoir properties, and phase-equilibria considerations diminish the energy resource potential of natural gas hydrate. The possible role of gas hydrate in global climate change has been often overstated. Although methane is a "greenhouse" gas in the atmosphere, much methane from dissociated gas hydrate may never reach the atmosphere, but rather may be converted to carbon dioxide and sequestered by the hydrosphere/biosphere before reaching the atmosphere. Thus, methane from gas hydrate may have little opportunity to affect global climate change. However, submarine geohazards (such as sediment instabilities and slope failures on local and regional scales, leading to debris flows, slumps, slides, and possible tsunamis) caused by gas-hydrate dissociation are of immediate and increasing importance as humankind moves to exploit seabed resources in ever-deepening waters of coastal oceans. The vulnerability of gas hydrate to temperature and sea level changes enhances the instability of deep-water oceanic sediments, and thus human activities and installations in this setting can be affected. JF - Proceedings of the National Academy of Sciences of the United States of America AU - Kvenvolden, K A AD - U.S. Geological Survey, 345 Middlefield Road, MS999, Menlo Park, CA 94025, USA. kk@octopus.wr.usgs.gov Y1 - 1999/03/30/ PY - 1999 DA - 1999 Mar 30 SP - 3420 EP - 3426 VL - 96 IS - 7 SN - 0027-8424, 0027-8424 KW - Air Pollutants, Occupational KW - 0 KW - Petroleum KW - Methane KW - OP0UW79H66 KW - Index Medicus KW - Global Health KW - Geological Phenomena KW - Humans KW - Geology KW - Methane -- analysis KW - Environmental Health KW - Air Pollutants, Occupational -- analysis KW - Climate UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/69663847?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=International+Summer+Meeting+-+American+Society+of+Agricultural+Engineers&rft.atitle=Flow+through+wetlands%3B+a+way+to+manage+salts+%26amp%3B+trace+elements&rft.au=Smith%2C+Delbert+M%3BAnonymous&rft.aulast=Smith&rft.aufirst=Delbert&rft.date=1994-06-01&rft.volume=1994&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=International+Summer+Meeting+-+American+Society+of+Agricultural+Engineers&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1999-05-12 N1 - Date created - 1999-05-12 N1 - Date revised - 2017-01-13 N1 - SuppNotes - Cited By: Geology. 1997 Mar;25(3):259-62 [11541226] N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Health impacts of domestic coal use in China. AN - 69662536; 10097053 AB - Domestic coal combustion has had profound adverse effects on the health of millions of people worldwide. In China alone several hundred million people commonly burn raw coal in unvented stoves that permeate their homes with high levels of toxic metals and organic compounds. At least 3,000 people in Guizhou Province in southwest China are suffering from severe arsenic poisoning. The primary source of the arsenic appears to be consumption of chili peppers dried over fires fueled with high-arsenic coal. Coal samples in the region were found to contain up to 35,000 ppm arsenic. Chili peppers dried over high-arsenic coal fires adsorb 500 ppm arsenic on average. More than 10 million people in Guizhou Province and surrounding areas suffer from dental and skeletal fluorosis. The excess fluorine is caused by eating corn dried over burning briquettes made from high-fluorine coals and high-fluorine clay binders. Polycyclic aromatic hydrocarbons formed during coal combustion are believed to cause or contribute to the high incidence of esophageal and lung cancers in parts of China. Domestic coal combustion also has caused selenium poisoning and possibly mercury poisoning. Better knowledge of coal quality parameters may help to reduce some of these health problems. For example, information on concentrations and distributions of potentially toxic elements in coal may help delineate areas of a coal deposit to be avoided. Information on the modes of occurrence of these elements and the textural relations of the minerals and macerals in coal may help predict the behavior of the potentially toxic components during coal combustion. JF - Proceedings of the National Academy of Sciences of the United States of America AU - Finkelman, R B AU - Belkin, H E AU - Zheng, B AD - U.S. Geological Survey, Mail Stop 956, Reston, VA 20192, USA. rbf@usgs.gov Y1 - 1999/03/30/ PY - 1999 DA - 1999 Mar 30 SP - 3427 EP - 3431 VL - 96 IS - 7 SN - 0027-8424, 0027-8424 KW - Coal KW - 0 KW - Metals KW - Index Medicus KW - Housing KW - Humans KW - China -- epidemiology KW - Poisoning -- epidemiology KW - Coal -- adverse effects KW - Arsenic Poisoning KW - Environmental Health KW - Air Pollution, Indoor KW - Metals -- poisoning UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/69662536?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=The+Journal+of+Positive+Psychology&rft.atitle=A+case+study+of+%E2%80%98The+good+school%3A%E2%80%99+Examples+of+the+use+of+Peterson%E2%80%99s+strengths-based+approach+with+students&rft.au=White%2C+Mathew+A.%3BWaters%2C+Lea+E.&rft.aulast=White&rft.aufirst=Mathew&rft.date=2015-01-01&rft.volume=10&rft.issue=1&rft.spage=69&rft.isbn=&rft.btitle=&rft.title=The+Journal+of+Positive+Psychology&rft.issn=17439760&rft_id=info:doi/10.1080%2F17439760.2014.920408 LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1999-05-12 N1 - Date created - 1999-05-12 N1 - Date revised - 2017-01-13 N1 - SuppNotes - Cited By: Science. 1987 Jan 9;235(4785):217-20 [3798109] Environ Health Perspect. 1998 May;106(5):239-44 [9518433] Carcinogenesis. 1995 Dec;16(12):3031-6 [8603481] N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Alterations in physiological parameters of rainbow trout (Oncorhynchus mykiss) with exposure to copper and copper/zinc mixtures. AN - 69646575; 10090814 AB - Rainbow trout (Oncorhynchus mykiss) were exposed to sublethal concentrations of copper (Cu, 14 microgram/liter) and zinc (Zn, 57 and 81 microgram/liter) for a 21-day period. The four treatments included a control, a Cu control, a Cu and low-Zn treatment and a Cu and high-Zn treatment. Selected parameters [e.g., hemoglobin (Hb), hematocrit (Hct), plasma glucose, lactate and cortisol, differential leukocyte count, respiratory burst, tissue metal concentrations, hepatic metallothionein (MT), brain acetylcholinesterase (AChE)] were evaluated at 2, 7, 14, and 21 days of exposure. Whole blood and plasma parameters were not altered by exposure to metals. The percentage of lymphocytes was consistently decreased in the three metal treatments, while percentages of neutrophils and monocytes were increased. Respiratory burst activity was elevated in all metal treatments. Gill Zn concentration was highly variable, with no significant alterations occurring. Gill Cu concentration was elevated above control levels in all metal treatments. Gill Cu concentration in the two Cu/Zn treatments was also elevated above levels in the Cu control. Hepatic metal concentrations and MT levels were not altered from control values. Measurements of brain AChE indicated an elevation in this parameter across metal treatments. In general, alterations in physiological parameters appeared to be due to Cu, with Zn having no interactive effect. Copyright 1999 Academic Press. JF - Ecotoxicology and environmental safety AU - Dethloff, G M AU - Schlenk, D AU - Hamm, J T AU - Bailey, H C AD - Wildlife, Fish & Conservation Biology, University of California, Davis, California, 95616, USA. gail_dethloff@usgs.gov Y1 - 1999/03// PY - 1999 DA - March 1999 SP - 253 EP - 264 VL - 42 IS - 3 SN - 0147-6513, 0147-6513 KW - Water Pollutants, Chemical KW - 0 KW - Copper KW - 789U1901C5 KW - Metallothionein KW - 9038-94-2 KW - Acetylcholinesterase KW - EC 3.1.1.7 KW - Zinc KW - J41CSQ7QDS KW - Index Medicus KW - Respiratory Burst -- drug effects KW - Leukocyte Count -- drug effects KW - Gills -- metabolism KW - Brain -- enzymology KW - Animals KW - Liver -- drug effects KW - Brain -- drug effects KW - Acetylcholinesterase -- metabolism KW - Body Weight -- drug effects KW - Liver -- metabolism KW - Metallothionein -- metabolism KW - Gills -- drug effects KW - Survival Analysis KW - Oncorhynchus mykiss -- physiology KW - Copper -- pharmacokinetics KW - Water Pollutants, Chemical -- toxicity KW - Zinc -- toxicity KW - Zinc -- pharmacokinetics KW - Water Pollutants, Chemical -- pharmacokinetics KW - Oncorhynchus mykiss -- metabolism KW - Copper -- toxicity UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/69646575?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecotoxicology+and+environmental+safety&rft.atitle=Alterations+in+physiological+parameters+of+rainbow+trout+%28Oncorhynchus+mykiss%29+with+exposure+to+copper+and+copper%2Fzinc+mixtures.&rft.au=Dethloff%2C+G+M%3BSchlenk%2C+D%3BHamm%2C+J+T%3BBailey%2C+H+C&rft.aulast=Dethloff&rft.aufirst=G&rft.date=1999-03-01&rft.volume=42&rft.issue=3&rft.spage=253&rft.isbn=&rft.btitle=&rft.title=Ecotoxicology+and+environmental+safety&rft.issn=01476513&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1999-05-04 N1 - Date created - 1999-05-04 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Replication of apparent nonlinear seismic response with linear wave propagation models AN - 52484965; 1999-036905 JF - Science AU - O'Connell, Daniel R H Y1 - 1999/03// PY - 1999 DA - March 1999 SP - 2045 EP - 2050 PB - American Association for the Advancement of Science, Washington, DC VL - 283 IS - 5410 SN - 0036-8075, 0036-8075 KW - United States KW - P-waves KW - body waves KW - three-dimensional models KW - finite difference analysis KW - seismic intensity KW - magnitude KW - mathematical models KW - elastic waves KW - waveforms KW - wave amplification KW - California KW - Southern California KW - ground motion KW - velocity KW - propagation KW - seismic waves KW - earthquakes KW - S-waves KW - 19:Seismology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52484965?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Science&rft.atitle=Replication+of+apparent+nonlinear+seismic+response+with+linear+wave+propagation+models&rft.au=O%27Connell%2C+Daniel+R+H&rft.aulast=O%27Connell&rft.aufirst=Daniel+R&rft.date=1999-03-01&rft.volume=283&rft.issue=5410&rft.spage=2045&rft.isbn=&rft.btitle=&rft.title=Science&rft.issn=00368075&rft_id=info:doi/ L2 - http://www.sciencemag.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 41 N1 - PubXState - DC N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - SCIEAS N1 - SubjectsTermNotLitGenreText - body waves; California; earthquakes; elastic waves; finite difference analysis; ground motion; magnitude; mathematical models; P-waves; propagation; S-waves; seismic intensity; seismic waves; Southern California; three-dimensional models; United States; velocity; wave amplification; waveforms ER - TY - JOUR T1 - Lower Big Lost River chronosequence; implications for glacial outburst flooding AN - 52237501; 2001-038182 JF - Abstracts with Programs - Geological Society of America AU - Simpson, D T AU - Kolbe, T E AU - Ostenaa, D A AU - Levish, D R AU - Klinger, R E AU - Anonymous Y1 - 1999/03// PY - 1999 DA - March 1999 SP - 56 PB - Geological Society of America (GSA), Boulder, CO VL - 31 IS - 4 SN - 0016-7592, 0016-7592 KW - United States KW - soils KW - Idaho KW - pedogenesis KW - Quaternary KW - sedimentation KW - Cenozoic KW - Arco Idaho KW - mineral composition KW - upper Quaternary KW - Butte County Idaho KW - chronosequences KW - glacial sedimentation KW - Columbia Plateau KW - Big Lost River KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52237501?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Lower+Big+Lost+River+chronosequence%3B+implications+for+glacial+outburst+flooding&rft.au=Simpson%2C+D+T%3BKolbe%2C+T+E%3BOstenaa%2C+D+A%3BLevish%2C+D+R%3BKlinger%2C+R+E%3BAnonymous&rft.aulast=Simpson&rft.aufirst=D&rft.date=1999-03-01&rft.volume=31&rft.issue=4&rft.spage=56&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, Rocky Mountain Section, 51st annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2001-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Arco Idaho; Big Lost River; Butte County Idaho; Cenozoic; chronosequences; Columbia Plateau; glacial sedimentation; Idaho; mineral composition; pedogenesis; Quaternary; sedimentation; soils; United States; upper Quaternary ER - TY - JOUR T1 - Holocene paleofloods on the Big Lost River, INEEL, Idaho; limits on extreme flood magnitude for long time periods AN - 52235318; 2001-038154 JF - Abstracts with Programs - Geological Society of America AU - Ostenaa, D A AU - Levish, D R AU - Klinger, R E AU - Walters, R A AU - Anonymous Y1 - 1999/03// PY - 1999 DA - March 1999 SP - 51 PB - Geological Society of America (GSA), Boulder, CO VL - 31 IS - 4 SN - 0016-7592, 0016-7592 KW - United States KW - Idaho KW - Quaternary KW - isotopes KW - paleohydrology KW - channels KW - frequency KW - Holocene KW - INEEL KW - Cenozoic KW - lithofacies KW - Arco Idaho KW - radioactive isotopes KW - dates KW - carbon KW - Butte County Idaho KW - fluvial features KW - floods KW - absolute age KW - Pleistocene KW - paleofloods KW - C-14 KW - Big Lost River KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52235318?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Holocene+paleofloods+on+the+Big+Lost+River%2C+INEEL%2C+Idaho%3B+limits+on+extreme+flood+magnitude+for+long+time+periods&rft.au=Ostenaa%2C+D+A%3BLevish%2C+D+R%3BKlinger%2C+R+E%3BWalters%2C+R+A%3BAnonymous&rft.aulast=Ostenaa&rft.aufirst=D&rft.date=1999-03-01&rft.volume=31&rft.issue=4&rft.spage=51&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, Rocky Mountain Section, 51st annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2001-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - absolute age; Arco Idaho; Big Lost River; Butte County Idaho; C-14; carbon; Cenozoic; channels; dates; floods; fluvial features; frequency; Holocene; Idaho; INEEL; isotopes; lithofacies; paleofloods; paleohydrology; Pleistocene; Quaternary; radioactive isotopes; United States ER - TY - JOUR T1 - Examination of evidence for, and timing of, a late Pleistocene outburst flood along the upper Big Lost River, central Idaho AN - 52232223; 2001-038105 JF - Abstracts with Programs - Geological Society of America AU - Knudsen, K L AU - Sowers, J M AU - Ostenaa, D A AU - Levish, D R AU - Anonymous Y1 - 1999/03// PY - 1999 DA - March 1999 SP - 19 PB - Geological Society of America (GSA), Boulder, CO VL - 31 IS - 4 SN - 0016-7592, 0016-7592 KW - United States KW - lakes KW - watersheds KW - thermoluminescence KW - terraces KW - central Idaho KW - upper Pleistocene KW - Cenozoic KW - Wildhorse Creek KW - geochronology KW - jokulhlaups KW - dams KW - sediments KW - Chilly Buttes KW - glacial lakes KW - soils KW - ice dams KW - hydrology KW - Idaho KW - Quaternary KW - colluvium KW - clastic sediments KW - clasts KW - glacial features KW - natural dams KW - Custer County Idaho KW - Pleistocene KW - Big Lost River KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52232223?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Examination+of+evidence+for%2C+and+timing+of%2C+a+late+Pleistocene+outburst+flood+along+the+upper+Big+Lost+River%2C+central+Idaho&rft.au=Knudsen%2C+K+L%3BSowers%2C+J+M%3BOstenaa%2C+D+A%3BLevish%2C+D+R%3BAnonymous&rft.aulast=Knudsen&rft.aufirst=K&rft.date=1999-03-01&rft.volume=31&rft.issue=4&rft.spage=19&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, Rocky Mountain Section, 51st annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2001-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Big Lost River; Cenozoic; central Idaho; Chilly Buttes; clastic sediments; clasts; colluvium; Custer County Idaho; dams; geochronology; glacial features; glacial lakes; hydrology; ice dams; Idaho; jokulhlaups; lakes; natural dams; Pleistocene; Quaternary; sediments; soils; terraces; thermoluminescence; United States; upper Pleistocene; watersheds; Wildhorse Creek ER - TY - JOUR T1 - Naval oil shale lands may hold large Piceance gas potential AN - 50917456; 1999-025136 JF - Oil & Gas Journal AU - Hoak, Thomas E AU - Klawitter, Alan L AU - Witherbee, Kermit G Y1 - 1999/03// PY - 1999 DA - March 1999 SP - 83 EP - 86 PB - PennWell, Tulsa, OK VL - 97 IS - 10 SN - 0030-1388, 0030-1388 KW - United States KW - petroleum exploration KW - geophysical surveys KW - Cretaceous KW - natural gas KW - Mesaverde Group KW - petroleum KW - production KW - Piceance Creek basin KW - Upper Cretaceous KW - Cenozoic KW - oil wells KW - oil shale KW - sedimentary rocks KW - folds KW - tectonics KW - drilling KW - anticlines KW - seismic profiles KW - well logs KW - three-dimensional models KW - geophysical methods KW - Wasatch Formation KW - Paleogene KW - Mesozoic KW - seismic methods KW - geometry KW - models KW - Tertiary KW - reserves KW - basement tectonics KW - dilatancy KW - naturally fractured reservoirs KW - surveys KW - geophysical profiles KW - Colorado KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50917456?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Oil+%26+Gas+Journal&rft.atitle=Naval+oil+shale+lands+may+hold+large+Piceance+gas+potential&rft.au=Hoak%2C+Thomas+E%3BKlawitter%2C+Alan+L%3BWitherbee%2C+Kermit+G&rft.aulast=Hoak&rft.aufirst=Thomas&rft.date=1999-03-01&rft.volume=97&rft.issue=10&rft.spage=83&rft.isbn=&rft.btitle=&rft.title=Oil+%26+Gas+Journal&rft.issn=00301388&rft_id=info:doi/ L2 - http://ogj.pennnet.com/home.cfm LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 7 N1 - PubXState - OK N1 - Document feature - illus. incl. 1 table, sects., sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - OIGJAV N1 - SubjectsTermNotLitGenreText - anticlines; basement tectonics; Cenozoic; Colorado; Cretaceous; dilatancy; drilling; folds; geometry; geophysical methods; geophysical profiles; geophysical surveys; Mesaverde Group; Mesozoic; models; natural gas; naturally fractured reservoirs; oil shale; oil wells; Paleogene; petroleum; petroleum exploration; Piceance Creek basin; production; reserves; sedimentary rocks; seismic methods; seismic profiles; surveys; tectonics; Tertiary; three-dimensional models; United States; Upper Cretaceous; Wasatch Formation; well logs ER - TY - JOUR T1 - Occurrence and behavior of the herbicide prometon in the hydrologic system AN - 26851419; 2001-34-004600 (CE); 04518609 (EN) AB - Prometon, a triazine herbicide, is used for total vegetation control on industrial sites, on noncrop areas on farms, in and under asphalt, and to a small extent by homeowners. Prometon has often been detected in surface water and groundwater in studies reported in the literature, but its presence is seldom discussed, partly because of its infrequent inclusion on lists of herbicides used in either agricultural or urban areas. In recent large-scale studies by the U.S. Geological Survey, prometon has been the most commonly detected herbicide in surface water and groundwater in urban areas and the third and fourth most commonly detected herbicide in groundwater and surface water, respectively, in agricultural areas. It also has been detected in rain. The frequent detection of prometon in the environment is discussed in relation to its use practices and predicted environmental behavior. Prometon is compared to atrazine, a structurally similar agricultural triazine herbicide that is one of the most studied and most commonly detected herbicides found in the hydrologic environment. The environmental data presented here demonstrate the wide-scale occurrence of prometon in all components of the hydrologic system, particularly in the surface water and groundwater of urban areas. JF - Environmental Science & Technology AU - Capel, P D AU - Spexet, A H AU - Larson, S J AD - U.S. Geological Survey, University of Minnesota, 122 Civil Engineering Department, Minneapolis, Minnesota 55455, USA capel@usgs.gov PY - 1999 SP - 674 EP - 680 PB - American Chemical Society, 1155 16th St , NW, Washington, DC, 20036, USA VL - 33 IS - 5 SN - 0013-936X, 0013-936X KW - Civil Engineering (CE); Environmental Engineering (EN) KW - Herbicides KW - Farms KW - Groundwater KW - Farming KW - Urban areas KW - Geological surveys KW - Vegetation KW - Inclusions KW - Environment KW - Control systems KW - Asphalts KW - Rain KW - Article KW - EE 40:Water Pollution: Monitoring, Control & Remediation (EN) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/26851419?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvironmentalengabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Occurrence+and+behavior+of+the+herbicide+prometon+in+the+hydrologic+system&rft.au=Capel%2C+P+D%3BSpexet%2C+A+H%3BLarson%2C+S+J&rft.aulast=Capel&rft.aufirst=P&rft.date=1999-03-01&rft.volume=33&rft.issue=5&rft.spage=674&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes9807340 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2011-11-11 DO - http://dx.doi.org/10.1021/es9807340 ER - TY - JOUR T1 - Design-based and model-based inference in surveys of freshwater mollusks AN - 17376345; 4597427 AB - Well-known concepts in statistical inference and sampling theory are used to develop recommendations for planning and analyzing the results of quantitative surveys of freshwater mollusks. Two methods of inference commonly used in survey sampling (design-based and model-based) are described and illustrated using examples relevant in surveys of freshwater mollusks. The particular objectives of a survey and the type of information observed in each unit of sampling can be used to help select the sampling design and the method of inference. For example, the mean density of a sparsely distributed population of mollusks can be estimated with higher precision by using model-based inference or by using design-based inference with adaptive cluster sampling than by using design-based inference with conventional sampling. More experience with quantitative surveys of natural assemblages of freshwater mollusks is needed to determine the actual benefits of different sampling designs and inferential procedures. JF - Journal of the North American Benthological Society AU - Dorazio, R M AD - United States Geological Survey, Biological Resources Division, 7920 NW 71 Street, Gainesville, FL 32653, USA, bob_dorazio@usgs.gov Y1 - 1999/03// PY - 1999 DA - Mar 1999 SP - 118 EP - 131 PB - North American Benthological Society VL - 18 IS - 1 SN - 0887-3593, 0887-3593 KW - Gastropods KW - Slugs KW - Snails KW - Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Freshwater environments KW - Gastropoda KW - Biological Sampling KW - Statistical analysis KW - Surveys KW - Methodology KW - Freshwater molluscs KW - Planning KW - Statistical Analysis KW - Sampling KW - Mollusks KW - Populations KW - SW 5010:Network design KW - Q1 08462:Benthos KW - D 04001:Methodology - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17376345?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+North+American+Benthological+Society&rft.atitle=Design-based+and+model-based+inference+in+surveys+of+freshwater+mollusks&rft.au=Dorazio%2C+R+M&rft.aulast=Dorazio&rft.aufirst=R&rft.date=1999-03-01&rft.volume=18&rft.issue=1&rft.spage=118&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+North+American+Benthological+Society&rft.issn=08873593&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Freshwater molluscs; Statistical analysis; Surveys; Sampling; Methodology; Freshwater environments; Snails; Biological Sampling; Planning; Gastropods; Statistical Analysis; Mollusks; Populations; Gastropoda ER - TY - JOUR T1 - Sediment, land use, and freshwater mussels: Prospects and problems AN - 17375405; 4597426 AB - The decline in freshwater mussel populations in many river basins throughout North America has been attributed, in part, to land-use modifications that cause changes in sediment regimes. However, the specific associations that mussels have with stream sediments are poorly understood, making it difficult to assess the impacts of changes in sedimentation rates on unionid mussels. Both bed and suspended materials, and concomitant changes in channel form associated with changes in sediment supply, may affect mussels in numerous ways at various stages in their life cycle. Considerable debate and uncertainty remains regarding the strength of associations between sediments and mussels, including whether increased sedimentation is a cause of recent mussel declines. It is important to be aware of appropriate procedures for sampling and analyzing fluvial sediments, and the nature of sediment sources, to adequately assess relationships between unionid mussels and fluvial sediments. JF - Journal of the North American Benthological Society AU - Box, J B AU - Mossa, J AD - US Geological Survey, 7920 NW 71st St., Gainesville, FL 32653 USA, jayne_brim_box@usgs.gov Y1 - 1999/03// PY - 1999 DA - Mar 1999 SP - 99 EP - 117 PB - North American Benthological Society VL - 18 IS - 1 SN - 0887-3593, 0887-3593 KW - Ecology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - Land Use KW - Sedimentation Rates KW - Environmental Effects KW - River Basins KW - Mussels KW - Fluvial Sediments KW - Unionidae KW - Environmental impact KW - River basins KW - Land use KW - Freshwater molluscs KW - Sedimentation KW - Zoobenthos KW - Q1 08462:Benthos KW - SW 2060:Effects on water of human nonwater activities KW - D 04658:Molluscs KW - Q5 08521:Mechanical and natural changes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17375405?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+North+American+Benthological+Society&rft.atitle=Sediment%2C+land+use%2C+and+freshwater+mussels%3A+Prospects+and+problems&rft.au=Box%2C+J+B%3BMossa%2C+J&rft.aulast=Box&rft.aufirst=J&rft.date=1999-03-01&rft.volume=18&rft.issue=1&rft.spage=99&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+North+American+Benthological+Society&rft.issn=08873593&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Freshwater molluscs; Environmental impact; River basins; Zoobenthos; Sedimentation; Land use; Environmental Effects; Sedimentation Rates; Land Use; River Basins; Mussels; Fluvial Sediments; Unionidae ER - TY - JOUR T1 - Paleohydrogeology of the San Joaquin Basin, California AN - 17371310; 4571820 AB - Mass transport can have a significant effect on chemical diagenetic processes in sedimentary basins. This paper presents results from the first part of a study that was designed to explore the role of an evolving hydrodynamic system in driving mass transport and chemical diagenesis, using the San Joaquin Basin of California as a field area. We use coupled hydrogeologic models to establish the paleohydrogeology, thermal history, and behavior of nonreactive solutes in the basin. These models rely on extensive geological information and account for variable-density fluid flow, heat transport, solute transport, tectonic uplift, sediment compaction, and clay dehydration. In our numerical simulations, tectonic uplift and ocean regression led to large-scale changes in fluid flow and composition by strengthening topography-driven fluid flow and allowing deep influx of fresh ground water in the San Joaquin Basin. Sediment compaction due to rapid deposition created moderate overpressures, leading to upward flow from depth. The unusual distribution of salinity in the basin reflects influx of fresh ground water to depths of as much as 2 km and dilution of saline fluids by dehydration reactions at depths greater than similar to 2.5 km. Simulations projecting the future salinity of the basin show marine salinities persisting for more than 10 m.y. after ocean regression. Results also show a change from topography- to compaction-driven flow in the Stevens Sandstone at ca. 5 Ma that coincides with an observed change in the diagenetic sequence. Results of this investigation provide a framework for future hydrologic research exploring the link between fluid flow and diagenesis. JF - Bulletin of the Geological Society of America AU - Wilson, A M AU - Garven, G AU - Boles, J R AD - U.S. Geological Survey, M.S. 431, National Center, Reston, Virginia 20192, USA, awilson2@usgs.gov Y1 - 1999/03// PY - 1999 DA - Mar 1999 SP - 432 EP - 449 VL - 111 IS - 3 SN - 0016-7606, 0016-7606 KW - USA, California, San Joaquin Valley KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Paleohydrology KW - Sedimentary Basins KW - USA, California, San Joaquin Basin KW - Hydrodynamics KW - Fluid Flow KW - Palaeo studies KW - Sedimentary basins KW - Geohydrology KW - Ground water KW - Hydrology KW - Groundwater KW - Fluid flow KW - Diagenesis KW - Topography KW - Q2 09148:Palaeo-studies KW - SW 0810:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17371310?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Bulletin+of+the+Geological+Society+of+America&rft.atitle=Paleohydrogeology+of+the+San+Joaquin+Basin%2C+California&rft.au=Wilson%2C+A+M%3BGarven%2C+G%3BBoles%2C+J+R&rft.aulast=Wilson&rft.aufirst=A&rft.date=1999-03-01&rft.volume=111&rft.issue=3&rft.spage=432&rft.isbn=&rft.btitle=&rft.title=Bulletin+of+the+Geological+Society+of+America&rft.issn=00167606&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Hydrodynamics; Palaeo studies; Ground water; Hydrology; Sedimentary basins; Fluid flow; Topography; Diagenesis; Sedimentary Basins; Paleohydrology; Fluid Flow; Geohydrology; Groundwater; USA, California, San Joaquin Basin ER - TY - JOUR T1 - Modeling the effects of nutria (Myocastor coypus) on wetland loss AN - 17308261; 4547640 AB - We created a model to study the process in which nutria (Myocastor coypus) feeding activities lead to erosion and loss of marsh area. This model ties together data on nutria population dynamics and feeding behavior from the literature with data from field studies on the phenology of Scirpus americanus and Spartina patens conducted in the Barataria Basin, Louisiana, USA in 1992. The complete model consists of three linked models: a model of nutria population dynamics (nutria model), a model of the annual marsh biomass cycle of Scirpus americanus and Spartina patens (biomass model), and a plant-biomass density-dependent marsh area model (area model). When all three models are linked together, they form the "nutria-biomass-area model." Analysis of the models indicated the following. (1) The high population densities and low survivorship rates as reported in the literature are incompatible. (2) The nutria model is sensitive to adult and juvenile survivorship and, to a lesser extent, young born per female. It is not particularly sensitive to gestation periods, impregnation rates, or time to maturity. (3) The marsh area model is not sensitive to the marsh loss equation nor to the density at which loss of marsh area begins but is sensitive to the amount of biomass destroyed per nutria. (4) Nutria numbers do not significantly decrease in the nutria-biomass-area model until the total marsh area approaches zero because marsh loss occurs only during winter when marsh biomass is at its annual low. JF - Wetlands AU - Carter, J AU - Foote, AL AU - Johnson-Randall, LA AD - USGS National Wetlands Research Center, 700 Cajundome Blvd., Lafayette, Louisiana, USA 70506, jacoby_cartersuper(s)gs.gov Y1 - 1999/03// PY - 1999 DA - Mar 1999 SP - 209 EP - 219 VL - 19 IS - 1 SN - 0277-5212, 0277-5212 KW - Nutria KW - USA, Louisiana KW - feeding KW - nutria KW - Water Resources Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Environmental degradation KW - Degradation KW - Population dynamics KW - Myocastor coypus KW - Models KW - Feeding behaviour KW - Environmental effects KW - Scirpus americanus KW - Wetlands KW - Feeding behavior KW - Spartina patens KW - Environmental impact KW - Marshes KW - Biomass KW - Ecosystem disturbance KW - Erosion KW - Salt marshes KW - Behavior KW - Introduced species KW - Aquatic mammals KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08463:Habitat community studies KW - SW 0870:Erosion and sedimentation KW - D 04003:Modeling, mathematics, computer applications KW - Q1 08371:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17308261?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wetlands&rft.atitle=Modeling+the+effects+of+nutria+%28Myocastor+coypus%29+on+wetland+loss&rft.au=Carter%2C+J%3BFoote%2C+AL%3BJohnson-Randall%2C+LA&rft.aulast=Carter&rft.aufirst=J&rft.date=1999-03-01&rft.volume=19&rft.issue=1&rft.spage=209&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Environmental degradation; Degradation; Environmental impact; Marshes; Population dynamics; Biomass; Ecosystem disturbance; Models; Erosion; Behavior; Salt marshes; Feeding behaviour; Environmental effects; Wetlands; Introduced species; Aquatic mammals; Feeding behavior; Spartina patens; Scirpus americanus; Myocastor coypus; USA, Louisiana ER - TY - JOUR T1 - Natural regeneration and growth of Taxodium distichum (L.) Rich. in Lake Chicot, Louisiana after 44 years of flooding AN - 17307683; 4547633 AB - Lake Chicot, in south central Louisiana, USA, was created in 1943 by the impoundment of Chicot Bayou. Extensive establishment of woody seedlings occurred in the lake during a 1.5 year period, including the growing seasons of both 1986 and 1987, when the reservoir was drained for repair work on the dam. Study plots were established in September 1986 to document woody vegetation establishment and to provide a baseline by which to monitor survival and growth after flooding resumed. Taxodium distichum seedlings were the dominant species after one growing season, with a maximum density of 50 seedlings/m super(2), an average of about 2/m super(2), and an average height of 75 cm. The lake was reflooded at the end of 1987, bringing water depths at the study plots up to about 1.4 m. Temporary drawdowns were again conducted during the fall of 1992 and 1996. In December 1992, the site was revisited, new plots established, and saplings counted and measured. There was an average of 2.1 T. distichum stems/m super(2), and the average height was 315 cm. After the 1996 growing season, there was still an average of about 1.9 stems/m super(2), and the average height had increased to 476 cm. Preservation of T. distichum forests in relatively shallow but continuously flooded areas such as Lake Chicot may be a simple matter of draining the lake after a good seed crop and maintaining the drawdown long enough for the seedlings to grow taller than the typical growing season water level. In the case of Lake Chicot, this period was two growing seasons. This action will mimic natural, drought-related drawdowns of the lake and will allow the seedlings to establish themselves and grow tall enough to survive normal lake water levels. JF - Wetlands AU - Keeland, B D AU - Conner, W H AD - United States Geological Survey, National Wetlands Research Center, 700 Cajundome Blvd., Lafayette, Louisiana, USA 70506 Y1 - 1999/03// PY - 1999 DA - Mar 1999 SP - 149 EP - 155 VL - 19 IS - 1 SN - 0277-5212, 0277-5212 KW - Baldcypress KW - USA, Louisiana KW - USA, Louisiana, Chicot L. KW - Water Resources Abstracts; Ecology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources KW - Water level KW - Water levels KW - Colonization KW - Growth KW - Lakes KW - Baseline studies KW - Ecosystem management KW - Wetlands KW - Plant populations KW - Reservoirs KW - Swamps KW - Taxodium distichum KW - Regeneration KW - Flooding KW - Nature conservation KW - Plant growth KW - Seedlings KW - Environment management KW - D 04635:Conifers KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08221:General KW - Q1 08463:Habitat community studies KW - SW 0860:Water and plants UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17307683?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Wetlands&rft.atitle=Natural+regeneration+and+growth+of+Taxodium+distichum+%28L.%29+Rich.+in+Lake+Chicot%2C+Louisiana+after+44+years+of+flooding&rft.au=Keeland%2C+B+D%3BConner%2C+W+H&rft.aulast=Keeland&rft.aufirst=B&rft.date=1999-03-01&rft.volume=19&rft.issue=1&rft.spage=149&rft.isbn=&rft.btitle=&rft.title=Wetlands&rft.issn=02775212&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Water levels; Colonization; Baseline studies; Lakes; Growth; Regeneration; Nature conservation; Flooding; Ecosystem management; Seedlings; Wetlands; Plant growth; Plant populations; Environment management; Swamps; Reservoirs; Water level; Taxodium distichum; USA, Louisiana, Chicot L. ER - TY - JOUR T1 - New method for the direct determination of dissolved Fe(III) concentration in acid mine waters AN - 16126473; 4518622 AB - A new method for direct determination of dissolved Fe(III) in acid mine water has been developed. In most present methods, Fe(III) is determined by computing the difference between total dissolved Fe and dissolved Fe(II). For acid mine waters, frequently Fe(II) >> Fe(III); thus, accuracy and precision are considerably improved by determining Fe(III) concentration directly. The new method utilizes two selective ligands to stabilize Fe(III) and Fe(II), thereby preventing changes in Fe reduction-oxidation distribution. Complexed Fe(II) is cleanly removed using a silica-based, reversed-phase adsorbent, yielding excellent isolation of the Fe(III) complex. Iron(III) concentration is measured colorimetrically or by graphite furnace atomic absorption spectrometry (GFAAS). The method requires inexpensive commercial reagents and simple procedures that can be used in the field. Calcium(II), Ni(II), Pb(II), Al(III), Zn(II), and Cd(II) cause insignificant colorimetric interferences for most acid mine waters. Waters containing >20 mg of Cu/L could cause a colorimetric interference and should be measured by GFAAS. Cobalt(II) and Cr(III) interfere if their molar ratios to Fe(III) exceed 24 and 5, respectively. Iron(II) interferes when its concentration exceeds the capacity of the complexing ligand (14 mg/L). Because of the GFAAS elemental specificity, only Fe(II) is a potential interferent in the GFAAS technique. The method detection limit is 2 mu g/L (40 nM) using GFAAS and 20 mu g/L (0.4 mu M) by colorimetry. JF - Environmental Science & Technology AU - To, T B AU - Nordstrom, D K AU - Cunningham, K M AU - Ball, J W AU - McCleskey, R B AD - U.S. Geological Survey, 3215 Marine Street, Boulder, Colorado 80303, USA, dkn@usgs.gov Y1 - 1999/03/01/ PY - 1999 DA - 1999 Mar 01 SP - 807 EP - 813 VL - 33 IS - 5 SN - 0013-936X, 0013-936X KW - Pollution Abstracts; Water Resources Abstracts KW - Pollutant Identification KW - Atomic absorption spectroscopy KW - Acidic wastes KW - Acid Mine Drainage KW - Chemical Analysis KW - Colorimetry KW - Water analysis KW - Analytical Methods KW - Detection Limits KW - Mine water KW - Iron KW - Sampling methods KW - Laboratory Equipment KW - P 2000:FRESHWATER POLLUTION KW - SW 3010:Identification of pollutants UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16126473?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=New+method+for+the+direct+determination+of+dissolved+Fe%28III%29+concentration+in+acid+mine+waters&rft.au=To%2C+T+B%3BNordstrom%2C+D+K%3BCunningham%2C+K+M%3BBall%2C+J+W%3BMcCleskey%2C+R+B&rft.aulast=To&rft.aufirst=T&rft.date=1999-03-01&rft.volume=33&rft.issue=5&rft.spage=807&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes980684z LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 1999-10-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Atomic absorption spectroscopy; Acidic wastes; Mine water; Colorimetry; Water analysis; Iron; Sampling methods; Pollutant Identification; Detection Limits; Analytical Methods; Acid Mine Drainage; Chemical Analysis; Laboratory Equipment DO - http://dx.doi.org/10.1021/es980684z ER - TY - JOUR T1 - Occurrence and behavior of the herbicide prometon in the hydrologic system AN - 16125943; 4518609 AB - Prometon, a triazine herbicide, is used for total vegetation control on industrial sites, on noncrop areas on farms, in and under asphalt, and to a small extent by homeowners. Prometon has often been detected in surface water and groundwater in studies reported in the literature, but its presence is seldom discussed, partly because of its infrequent inclusion on lists of herbicides used in either agricultural or urban areas. In recent large-scale studies by the U.S. Geological Survey, prometon has been the most commonly detected herbicide in surface water and groundwater in urban areas and the third and fourth most commonly detected herbicide in groundwater and surface water, respectively, in agricultural areas. It also has been detected in rain. The frequent detection of prometon in the environment is discussed in relation to its use practices and predicted environmental behavior. Prometon is compared to atrazine, a structurally similar agricultural triazine herbicide that is one of the most studied and most commonly detected herbicides found in the hydrologic environment. The environmental data presented here demonstrate the wide-scale occurrence of prometon in all components of the hydrologic system, particularly in the surface water and groundwater of urban areas. JF - Environmental Science & Technology AU - Capel, P D AU - Spexet, AH AU - Larson, S J AD - U.S. Geological Survey, University of Minnesota, 122 Civil Engineering Department, Minneapolis, Minnesota 55455, USA, capel@usgs.gov Y1 - 1999/03/01/ PY - 1999 DA - 1999 Mar 01 SP - 674 EP - 680 VL - 33 IS - 5 SN - 0013-936X, 0013-936X KW - prometon KW - Pollution Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - Agriculture KW - Surface water KW - Pollution effects KW - Groundwater Pollution KW - Surface Water KW - Freshwater KW - Pollutant persistence KW - Hydrology KW - Urban areas KW - Fate of Pollutants KW - Triazine Pesticides KW - Herbicides KW - Water pollution KW - Urban Areas KW - Groundwater pollution KW - Q5 01503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/16125943?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Occurrence+and+behavior+of+the+herbicide+prometon+in+the+hydrologic+system&rft.au=Capel%2C+P+D%3BSpexet%2C+AH%3BLarson%2C+S+J&rft.aulast=Capel&rft.aufirst=P&rft.date=1999-03-01&rft.volume=33&rft.issue=5&rft.spage=674&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes9807340 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 1999-11-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Pollutant persistence; Hydrology; Pollution effects; Groundwater pollution; Herbicides; Water pollution; Agriculture; Surface water; Urban areas; Triazine Pesticides; Fate of Pollutants; Urban Areas; Groundwater Pollution; Surface Water; Freshwater DO - http://dx.doi.org/10.1021/es9807340 ER - TY - JOUR T1 - Methane as a product of chloroethene biodegradation under methanogenic conditions AN - 19420153; 4525526 AB - Radiometric detection headspace analyses of microcosms containing bed sediments from two geographically distinct sites indicated that 10-39% of the radiolabeled carbon transformed during anaerobic biodegradation of [1,2- super(14)C]trichloroethene (TCE) or [1,2- super(14)C]vinyl chloride (VC) under methanogenic conditions was ultimately incorporated into super(14)CH sub(4). The results demonstrate that, in addition to ethene, ethane, and CO sub(2), CH sub(4) can be a significant product of chloroethene biodegradation in some methanogenic sediments. JF - Environmental Science & Technology AU - Bradley, P M AU - Chapelle, F H AD - U.S. Geological Survey, 720 Gracern Road, Suite 129, Columbia, South Carolina 29210-7651, pbradley@usgs.gov Y1 - 1999/02/15/ PY - 1999 DA - 1999 Feb 15 SP - 653 EP - 656 VL - 33 IS - 4 SN - 0013-936X, 0013-936X KW - chloroethene KW - methane KW - Biotechnology and Bioengineering Abstracts; Microbiology Abstracts A: Industrial & Applied Microbiology; Water Resources Abstracts; Pollution Abstracts KW - Anaerobic Conditions KW - Biodegradation KW - ethene KW - Bed Load KW - Chloride KW - Methanogenesis KW - Carbon KW - Headspace KW - Microcosms KW - Vinyl chloride KW - Methane KW - Carbon Radioisotopes KW - Sediments KW - Chemical reactions KW - Carbon dioxide KW - SW 0880:Chemical processes KW - W 30950:Waste Treatment & Pollution Clean-up KW - P 9000:ENVIRONMENTAL ACTION KW - A 01061:General UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19420153?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Abiotechresearch&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Methane+as+a+product+of+chloroethene+biodegradation+under+methanogenic+conditions&rft.au=Nelson%2C+S+M%3BMueller%2C+G%3BHemphill%2C+D+C&rft.aulast=Nelson&rft.aufirst=S&rft.date=1994-04-01&rft.volume=52&rft.issue=4&rft.spage=574&rft.isbn=&rft.btitle=&rft.title=Bulletin+of+environmental+contamination+and+toxicology&rft.issn=00074861&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 1999-11-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Methane; Carbon; Biodegradation; ethene; Headspace; Chloride; chloroethene; Microcosms; Carbon dioxide; Methanogenesis; Sediments; Chemical reactions; Vinyl chloride; Anaerobic Conditions; Carbon Radioisotopes; Bed Load DO - http://dx.doi.org/10.1021/es981027+ ER - TY - JOUR T1 - Relation of streams, lakes, and wetlands to groundwater flow systems AN - 860392110; 14382313 AB - Surface-water bodies are integral parts of groundwater flow systems. Groundwater interacts with surface water in nearly all landscapes, ranging from small streams, lakes, and wetlands in headwater areas to major river valleys and seacoasts. Although it generally is assumed that topographically high areas are groundwater recharge areas and topographically low areas are groundwater discharge areas, this is true primarily for regional flow systems. The superposition of local flow systems associated with surface-water bodies on this regional framework results in complex interactions between groundwater and surface water in all landscapes, regardless of regional topographic position. Hydrologic processes associated with the surface-water bodies themselves, such as seasonally high surface-water levels and evaporation and transpiration of groundwater from around the perimeter of surface-water bodies, are a major cause of the complex and seasonally dynamic groundwater flow fields associated with surface water. These processes have been documented at research sites in glacial, dune, coastal, mantled karst, and riverine terrains.Original Abstract: Les eaux de surface sont parties integrantes des systemes aquiferes. Les eaux souterraines interagissent avec les eaux de surface dans presque tous les types d'environnements, depuis les petits ruisseaux, les lacs et les zones humides jusqu'aux bassins versants des vallees des grands fleuves et aux lignes de cote. Il est en general admis que les zones topographiquement hautes sont des lieux de recharge des aquiferes et les zones basses des lieux de decharge, ce qui est le cas des grands systemes aquiferes regionaux. La superposition de systemes locaux, associes a des eaux de surface, a l'organisation regionale d'ecoulements souterrains resulte d'interactions complexes entre les eaux souterraines et les eaux de surface dans tous les environnements, quelle que soit la situation topographique regionale. Les processus hydrologiques associes aux eaux de surface elles-memes, tels que des niveaux d'eau de surface saisonnierement hauts et l'evaporation et la transpiration de l'eau souterraine a la peripherie des eaux de surface, sont les causes essentielles de la dynamique complexe et saisonniere des nappes associees aux eaux de surface. Ces processus ont ete mis en evidence sur des sites de recherche dans des formations glaciaires, dunaires, littorales, fluviales et de karst couvert. JF - Hydrogeology Journal AU - Winter, Thomas C AD - U.S. Geological Survey, MS 413, Denver Federal Center, Lakewood, Colorado 80225, USA Fax: +1-303-236-5034, tcwinter@usgs.gov Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 28 EP - 45 PB - Springer-Verlag, P.O. Box 2485 Secaucus NJ 07096-2485 USA VL - 7 IS - 1 SN - 1431-2174, 1431-2174 KW - Water Resources Abstracts; Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Meteorological & Geoastrophysical Abstracts KW - Flow System KW - Evaporation KW - Hydrogeology KW - Karst KW - Glacial lakes KW - Freshwater KW - Streams KW - Lakes KW - Groundwater recharge KW - Hydrologic processes KW - Palaeoceanography KW - Ground water KW - Wetlands KW - Topography KW - Groundwater flow KW - River discharge KW - River valleys KW - Transpiration KW - Surface-groundwater Relations KW - Groundwater KW - Groundwater Movement KW - AQ 00001:Water Resources and Supplies KW - Q2 09148:Palaeo-studies KW - SW 0850:Lakes KW - M2 556.13:Evaporation/Evapotranspiration (556.13) UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/860392110?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Hydrogeology+Journal&rft.atitle=Oil+and+gas+drilling+and+operations+in+cave+and+karst+areas%3B+background+and+development+of+a+BLM+approach&rft.au=Goodbar%2C+James%2C+R&rft.aulast=Goodbar&rft.aufirst=James&rft.date=1994-04-01&rft.volume=&rft.issue=&rft.spage=129&rft.isbn=&rft.btitle=&rft.title=Bulletin+-+New+Mexico+Bureau+of+Geology+%26+Mineral+Resources&rft.issn=00964581&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2011-04-01 N1 - Last updated - 2015-03-19 N1 - SubjectsTermNotLitGenreText - Palaeoceanography; River discharge; Ground water; Wetlands; Glacial lakes; River valleys; Transpiration; Hydrologic processes; Groundwater recharge; Evaporation; Hydrogeology; Groundwater flow; Karst; Topography; Flow System; Lakes; Surface-groundwater Relations; Groundwater; Groundwater Movement; Streams; Freshwater DO - http://dx.doi.org/10.1007/s100400050178 ER - TY - JOUR T1 - Quasi-two-dimensional simulation of scour and deposition in alluvial channels; discussion and reply AN - 52400287; 2000-013543 JF - Journal of Hydraulic Engineering AU - Bennett, James P AU - Lee, Hong-Yuan AU - Hsieh, Hui-Ming AU - Yang, Jinn-Chuang AU - Yang, Chih Ted Y1 - 1999/02// PY - 1999 DA - February 1999 SP - 206 EP - 207 PB - American Society of Civil Engineers, New York, NY VL - 125 IS - 2 SN - 0733-9429, 0733-9429 KW - scour KW - erosion KW - deposition KW - clastic sediments KW - sediments KW - roughness KW - channels KW - suspended materials KW - alluvium KW - simulation KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52400287?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydraulic+Engineering&rft.atitle=Quasi-two-dimensional+simulation+of+scour+and+deposition+in+alluvial+channels%3B+discussion+and+reply&rft.au=Bennett%2C+James+P%3BLee%2C+Hong-Yuan%3BHsieh%2C+Hui-Ming%3BYang%2C+Jinn-Chuang%3BYang%2C+Chih+Ted&rft.aulast=Bennett&rft.aufirst=James&rft.date=1999-02-01&rft.volume=125&rft.issue=2&rft.spage=206&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydraulic+Engineering&rft.issn=07339429&rft_id=info:doi/ L2 - http://scitation.aip.org/hyo/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Number of references - 4 N1 - PubXState - NY N1 - Document feature - illus. N1 - SuppNotes - For reference to original see Lee, Hong-Yuan, Hsieh, Hui-Ming, Yang, Jinn-Chuang and Yang, Chih Ted, J. Hydraul. Eng., Am. Soc. Civ. Eng., Vol. 123, No. 7, p. 600-609, July 1997 N1 - Last updated - 2012-06-07 N1 - CODEN - JHEND8 N1 - SubjectsTermNotLitGenreText - alluvium; channels; clastic sediments; deposition; erosion; roughness; scour; sediments; simulation; suspended materials ER - TY - JOUR T1 - Mineral resources of the Chichagof and Baranof islands area, Southeast Alaska AN - 52337051; 2000-051957 JF - BLM - Alaska Technical Report AU - Bittenbender, Peter E AU - Still, Jan C AU - Maas, Kenneth M AU - McDonald, Mitchell E, Jr Y1 - 1999/02// PY - 1999 DA - February 1999 SP - 222 EP - 222, 3 sheets PB - U. S. Department of the Interior, Bureau of Land Management, Alaska State Office, Anchorage, AK KW - Scale: 1:63,360 KW - Scale: 1:12,000 KW - Type: geologic map KW - Type: site location map KW - Type: base map KW - Type: colored land use map KW - Type: colored site location maps KW - Type: colored geologic maps KW - Type: site location maps KW - United States KW - resources KW - geologic maps KW - Alexander Archipelago KW - production KW - silver ores KW - Baranof Island KW - spatial distribution KW - gold ores KW - explanatory text KW - copper ores KW - gypsum deposits KW - mines KW - petrology KW - Southeastern Alaska KW - host rocks KW - cobalt ores KW - land use maps KW - site location maps KW - massive sulfide deposits KW - maps KW - nickel ores KW - metal ores KW - Chichagof Island KW - tonnage KW - massive deposits KW - Alaska KW - base maps KW - land use KW - 26A:Economic geology, general, deposits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52337051?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Bittenbender%2C+Peter+E%3BStill%2C+Jan+C%3BMaas%2C+Kenneth+M%3BMcDonald%2C+Mitchell+E%2C+Jr&rft.aulast=Bittenbender&rft.aufirst=Peter&rft.date=1999-02-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Mineral+resources+of+the+Chichagof+and+Baranof+islands+area%2C+Southeast+Alaska&rft.title=Mineral+resources+of+the+Chichagof+and+Baranof+islands+area%2C+Southeast+Alaska&rft.issn=&rft_id=info:doi/ L2 - http://www.blm.gov/ak/st/en/info/gen_pubs/tr.html LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Number of references - 403 N1 - PubXState - AK N1 - Document feature - illus. incl. 4 tables N1 - SuppNotes - Includes appendices N1 - Last updated - 2012-06-07 N1 - CODEN - #04969 N1 - SubjectsTermNotLitGenreText - Alaska; Alexander Archipelago; Baranof Island; base maps; Chichagof Island; cobalt ores; copper ores; explanatory text; geologic maps; gold ores; gypsum deposits; host rocks; land use; land use maps; maps; massive deposits; massive sulfide deposits; metal ores; mines; nickel ores; petrology; production; resources; silver ores; site location maps; Southeastern Alaska; spatial distribution; tonnage; United States ER - TY - JOUR T1 - Chlorinated Ethenes from Groundwater in Tree Trunks AN - 20556586; 4518584 AB - The purpose of this investigation was to determine whether tree-core analysis could be used to delineate shallow groundwater contamination by chlorinated ethenes. Analysis of tree cores from bald cypress [Taxodium distichum (L.) Rich], tupelo (Nyssa aquatica L.), sweet gum (Liquidambar stryaciflua L.), oak (Quercus spp.), sycamore (Platanus occidentalis L.), and loblolly pine (Pinus taeda L.) growing over shallow groundwater contaminated with cis-1,2-dichloroethene (cDCE) and trichloroethene (TCE) showed that those compounds also were present in the trees. The cores were collected and analyzed by headspace gas chromatography. Bald cypress, tupelo, and loblolly pine contained the highest concentrations of TCE, with lesser amounts in nearby oak and sweet gum. The concentrations of cDCE and TCE in various trees appeared to reflect the configuration of the chlorinated-solvent groundwater contamination plume. Bald cypress cores collected along 18.6-m vertical transects of the same trunks showed that TCE concentrations decline by 30-70% with trunk height. The ability of the tested trees to take up cDCE and TCE make tree coring a potentially cost-effective and simple approach to optimizing well placement at this site. JF - Environmental Science & Technology AU - Vroblesky, DA AU - Nietch, C T AU - Morris, J T AD - U.S. Geological Survey, 720 Gracern Road, Suite 129, Stephenson Center, Columbia, South Carolina 29210-7651, USA, vroblesk@usgs.gov Y1 - 1999/02/01/ PY - 1999 DA - 1999 Feb 01 SP - 510 EP - 515 VL - 33 IS - 3 SN - 0013-936X, 0013-936X KW - 1,2-dichloroethene KW - Nyssa aquatica KW - Pinus taeda KW - Platanus occidentalis KW - Quercus KW - Taxodium distichum KW - ethene KW - trichloroethene KW - Pollution Abstracts; Water Resources Abstracts KW - Bioindicators KW - Siting criteria KW - Contamination KW - Trees KW - Solvents KW - Groundwater Pollution KW - Gas Chromatography KW - Chlorinated Hydrocarbons KW - Bioaccumulation KW - Cores KW - Wells KW - Groundwater pollution KW - Water wells KW - Plumes KW - P 2000:FRESHWATER POLLUTION KW - SW 3030:Effects of pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20556586?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Apollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+%26+Technology&rft.atitle=Chlorinated+Ethenes+from+Groundwater+in+Tree+Trunks&rft.au=Vroblesky%2C+DA%3BNietch%2C+C+T%3BMorris%2C+J+T&rft.aulast=Vroblesky&rft.aufirst=DA&rft.date=1999-02-01&rft.volume=33&rft.issue=3&rft.spage=510&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+%26+Technology&rft.issn=0013936X&rft_id=info:doi/10.1021%2Fes980848b LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 1999-11-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Bioindicators; Siting criteria; Contamination; Trees; Water wells; Groundwater pollution; Chlorinated Hydrocarbons; Bioaccumulation; Cores; Wells; Solvents; Groundwater Pollution; Plumes; Gas Chromatography DO - http://dx.doi.org/10.1021/es980848b ER - TY - JOUR T1 - Restoring marsh elevation in a rapidly subsiding salt marsh by thin-layer deposition of dredged material AN - 19729051; 4547571 AB - Thin-layer deposition of dredged material on coastal marsh by means of high-pressure spray dredging (Jet-Spray registered super(2)) technology has been proposed as a mechanism to minimize wetland impacts associated with traditional bucket dredging technologies and to restore soil elevations in deteriorated marshes of the Mississippi River delta. The impact of spray dredging on vegetated marsh and adjacent shallow-water habitat (formerly vegetated marsh that deteriorated to open water) was evaluated in a 0.5-ha Spartina alterniflora-dominated salt marsh in coastal Louisiana. The thickness of dredged sediment deposits was determined from artificial soil marker horizons and soil elevation change was determined from sedimentation-erosion tables (SET) established prior to spraying in both sprayed and reference marshes. The vertical accretion and elevation change measurements were made simultaneously to allow for calculation of shallow ( similar to 5 m depth) subsidence (accretion minus elevation change). Measurements made immediately following spraying in July 1996 revealed that stems of S. alterniflora were knocked down by the force of the spray and covered with 23 mm of dredged material. Stems of S. alterniflora soon recovered, and by July 1997 the percent cover of S. alterniflora had increased three-fold over pre-project conditions. Thus, the layer of dredged material was thin enough to allow for survival of the S. alterniflora plants, with no subsequent colonization by plant species typical of higher marsh zones. By February 1998, 62 mm of vertical accretion accumulated at this site, and little indication of disturbance was noted. Although not statistically significant, soil elevation change was greater than accretion on average at both the spray and reference marshes, suggesting that subsurface expansion caused by increased root biomass production and/or pore water storage influence elevation in this marsh region. In the adjacent shallow water pond, 129 mm of sediment was deposited in July 1996 as a result of spraying, and despite initial shallow subsidence and continual erosion through February 1998, water bottom elevation was raised sufficiently to allow S. alterniflora to invade via rhizome growth from the adjacent marsh. Hence, thin-layer deposition of dredged material at this site was effective at restoring and maintaining marsh elevation after 1.5 years. However, if the open water sediment deposits are not soon completely stabilized via further vegetative colonization, erosion may eventually lower elevations to the level where emergent vegetation cannot persist. JF - Ecological Engineering AU - Ford, MA AU - Cahoon AU - Lynch, J C AD - Johnson Controls World Services, Inc., National Wetlands Research Center, 700 Cajundome Blvd., Lafayette, LA 70506, USA, mark_ford@usgs.gov Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 189 EP - 205 VL - 12 IS - 3-4 SN - 0925-8574, 0925-8574 KW - Pollution Abstracts; Ecology Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Water Resources Abstracts KW - Pore water KW - ASW, USA, Louisiana KW - Freshwater KW - Ponds KW - Soil KW - shallow water KW - emergent vegetation KW - ASW, USA, Mississippi R. Delta KW - Wetlands KW - Spartina alterniflora KW - disturbance KW - Vegetation KW - Biomass KW - Environmental protection KW - Storage KW - Environmental restoration KW - Dredging KW - survival KW - Technology KW - Land Management KW - Habitat improvement (physical) KW - Deltas KW - deltas KW - Erosion control KW - Sediment pollution KW - Sprays KW - Marshes KW - colonization KW - Erosion KW - Salt marshes KW - Elevation KW - Plants KW - Q5 01522:Protective measures and control KW - P 1000:MARINE POLLUTION KW - SW 4020:Evaluation process KW - D 04715:Reclamation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/19729051?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Engineering&rft.atitle=Restoring+marsh+elevation+in+a+rapidly+subsiding+salt+marsh+by+thin-layer+deposition+of+dredged+material&rft.au=Ford%2C+MA%3BCahoon%3BLynch%2C+J+C&rft.aulast=Ford&rft.aufirst=MA&rft.date=1999-02-01&rft.volume=12&rft.issue=3-4&rft.spage=189&rft.isbn=&rft.btitle=&rft.title=Ecological+Engineering&rft.issn=09258574&rft_id=info:doi/10.1016%2FS0925-8574%2898%2900061-5 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 1999-09-01 N1 - Last updated - 2011-12-14 N1 - SubjectsTermNotLitGenreText - Salt marshes; Dredging; Wetlands; Habitat improvement (physical); Deltas; Environmental protection; Erosion control; Environmental restoration; Pore water; Sediment pollution; disturbance; Sprays; Biomass; colonization; Ponds; Storage; shallow water; Soil; Erosion; deltas; emergent vegetation; Plants; survival; Technology; Land Management; Elevation; Vegetation; Marshes; Spartina alterniflora; ASW, USA, Louisiana; ASW, USA, Mississippi R. Delta; Freshwater DO - http://dx.doi.org/10.1016/S0925-8574(98)00061-5 ER - TY - JOUR T1 - Distributions of uronic acids and O-methyl sugars in sinking and sedimentary particles in two coastal marine environments AN - 17384769; 4603119 AB - Although recent research has indicated that bacteria may contribute an important fraction of biochemical residues in terrestrial and marine environments, it is difficult for geochemists to identify contributions from these ubiquitous and biochemically diverse organisms. Previous studies have suggested uronic acids and O-methyl sugars may be useful indicators of microbial abundance and activity, but have been limited primarily to analyses of a small number of isolated samples. We report here comparative distributions of O-methyl sugars, uronic acids, and aldoses in sediment trap material and sediments from Dabob Bay, WA and nearby Saanich Inlet, BC, where temporal and spatial trends may be used together with well-established patterns in other biochemicals to identify bacterial contributions against the background of other carbohydrate sources. O-methyl sugars and uronic acids were important contributors to the overall flux and burial of polysaccharide material in Dabob Bay and Saanich Inlet, composing less than or equal to 12 wt% of the total carbohydrate yields from sediment trap and sediment samples. O-methyl sugars accounted for an average of 5% of the carbohydrate yields from sediment trap materials and sediments, but were found rarely and only in low abundance in vascular plant tissues, phytoplankton, and kelp. In contrast, uronic acids were abundant products of sediment trap material and sediments, as well as vascular plant tissues, where in some cases they predominated among all carbohydrates. Uronic acid abundance in sediment trap material averaged 3% and ranged to >6% of total carbohydrate yields. The persistence of total minor sugar yields in water column collections from Dabob Bay throughout the seasonal cycle indicated they had a primary source that was not directly related to plankton bloom cycles nor pulsed inputs of vascular plant remains. Subsurface maxima in total minor sugar yields (and several individual components) within sediment cores from both sites indicate in situ sedimentary sources. Taken together, the observed environmental distributions strongly suggest that the minor sugar abundances in Dabob Bay and Saanich Inlet were controlled by in situ microbial production. JF - Geochimica et Cosmochimica Acta AU - Bergamaschi, BA AU - Walters, J S AU - Hedges, JI AD - School of Oceanography, Box 357940, University of Washington, Seattle, WA 98195-7940, USA, bbergama@usgs.gov Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 413 EP - 425 VL - 63 IS - 3-4 SN - 0016-7037, 0016-7037 KW - Canada, British Columbia, Saanich Inlet KW - USA, Washington, Dabob Bay KW - Water Resources Abstracts; Oceanic Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Biochemistry KW - Organic acids KW - Indicators KW - INE, USA, Washington, Dabob Bay KW - Sugars KW - Microbiological Studies KW - Saccharides KW - Marine Sediments KW - Cores KW - Particulate Matter KW - Carbohydrates KW - Enzymatic activity KW - Marine KW - Bacteria KW - Organic Acids KW - Biogeochemical cycle KW - Geochemistry KW - Suspended particulate matter KW - INE, Canada, British Columbia, Vancouver I., Saanich Inlet KW - Microorganisms KW - Biogenic deposits KW - Metabolism KW - O 1070:Ecology/Community Studies KW - SW 0880:Chemical processes KW - Q2 09187:Geochemistry of sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17384769?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3A&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Communication+Education&rft.atitle=Education+and+fear%3A+Black+and+gay+in+the+public+sphere+of+HIV+prevention&rft.au=Spieldenner%2C+Andrew+R.%3BCastro%2C+Christian+F.&rft.aulast=Spieldenner&rft.aufirst=Andrew&rft.date=2010-07-01&rft.volume=59&rft.issue=3&rft.spage=274&rft.isbn=&rft.btitle=&rft.title=Communication+Education&rft.issn=03634523&rft_id=info:doi/10.1080%2F03634521003606202 LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Biochemistry; Biogeochemical cycle; Organic acids; Microorganisms; Indicators; Biogenic deposits; Enzymatic activity; Suspended particulate matter; Metabolism; Saccharides; Bacteria; Marine Sediments; Cores; Organic Acids; Geochemistry; Particulate Matter; Carbohydrates; Sugars; Microbiological Studies; INE, Canada, British Columbia, Vancouver I., Saanich Inlet; INE, USA, Washington, Dabob Bay; Marine DO - http://dx.doi.org/10.1016/S0016-7037(99)00075-7 ER - TY - JOUR T1 - Ontogeny of a flood plain AN - 17375393; 4570993 AB - The ontogeny of five flood-plain segments is described for a period of 18 yr following a major flood in 1978 on the Powder River in southeastern Montana. The flood plains developed on relatively elevated sand and gravel deposits left within the channel by the 1978 flood. In cross section, the flood plains resemble benches with well-developed natural levees. Flood-plain growth occurred as sediment was draped onto preexisting surfaces in layers of sand and mud a few centimeters to decimeters thick, resulting in some lateral, but mostly vertical accretion. Annual and biannual measurements indicated that, as the flood-plain segments grew upward, the annual rate of vertical accretion decreased as the partial duration recurrence interval for the threshold or bankfull discharge increased from 0.16 to 1.3 yr. It is clear that a constant recurrence interval for overbank flow cannot be meaningfully assigned to this type of flood-plain ontogeny. These flood plains did not grow on migrating point bars, and vertical accretion at least initially occurred within the channel, rather than across the valley flat during extensive overbank flows. Sediments of these flood plains define narrow, elongated stratigraphic units that border the active channel and onlap older flood-plain deposits. These characteristics are considerably different from those of many facies models for meandering river deposits. Facies similar to those described in this paper are likely to be preserved, thereby providing important evidence in the geologic record for episodes of periodic channel expansion by ancient rivers. JF - Bulletin of the Geological Society of America AU - Moody, JA AU - Pizzuto, JE AU - Meade, R H AD - U.S. Geological Survey, M.S. 413, Box 25046, Denver Federal Center, Denver, Colorado 80225-0046, USA, jamoody@usgs.gov Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 291 EP - 303 VL - 111 IS - 2 SN - 0016-7606, 0016-7606 KW - USA, Montana, Powder R. KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Rivers KW - Fluvial morphology KW - Gravel KW - Levees KW - Stratigraphy KW - Flood Plains KW - Accretion KW - Flood plains KW - Geomorphology KW - Floods KW - Sand KW - Deposition KW - Ontogeny KW - Sedimentation KW - Q2 09264:Sediments and sedimentation KW - SW 0870:Erosion and sedimentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17375393?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Bulletin+of+the+Geological+Society+of+America&rft.atitle=Ontogeny+of+a+flood+plain&rft.au=Moody%2C+JA%3BPizzuto%2C+JE%3BMeade%2C+R+H&rft.aulast=Moody&rft.aufirst=JA&rft.date=1999-02-01&rft.volume=111&rft.issue=2&rft.spage=291&rft.isbn=&rft.btitle=&rft.title=Bulletin+of+the+Geological+Society+of+America&rft.issn=00167606&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Rivers; Fluvial morphology; Accretion; Geomorphology; Gravel; Flood plains; Sand; Floods; Stratigraphy; Levees; Ontogeny; Sedimentation; Flood Plains; Deposition ER - TY - JOUR T1 - Diel movement and habitat use by paddlefish in Navigation Pool 8 of the upper Mississippi River AN - 17371403; 4581084 AB - We studied diel movement and habitat use by paddlefish Polyodon spathula implanted with radio transmitters in Navigation Pool 8 of the upper Mississippi River. We radio-tracked five paddlefish during three randomly chosen 24-h periods each month in May, August, and October 1995. Paddlefish were located by boat one to three times every 3 h during each 24-h period. At each location, geographic coordinates were determined with a global positioning system receiver using the Precise Positioning Service, and depth was measured with a depth sounder. Location coordinates were plotted with ARC/INFO software on a Geographic Information System land-water coverage. Movement distances were calculated as the linear distance between sequential locations. Radio-tagged paddlefish usually remained in a secondary channel that had low current velocity during all seasons, whereas main channel, main channel border, tailwater, and backwater habitats were seldom used. Paddlefish strongly selected areas that were deep; about 62% of paddlefish locations were in areas with more than 6 m of depth, although this habitat constituted only 14.5% of the total study area. However, paddlefish used significantly shallower areas during the night than during the day. Paddlefish moved significantly larger distances at night than during the day in spring and fall, but differences in movement among diel periods during summer were not significant. Our research suggests that radiotelemetry studies that need to determine depth use or movement of paddlefish during small time scales may need to incorporate a diel component. However, study objectives to determine use of general habitat types by radio-marked paddlefish can be adequately met by tracking during the day. JF - North American Journal of Fisheries Management AU - Zigler, S J AU - Dewey, M R AU - Knights, B C AD - U.S. Geological Survey, Biological Resources Division, Upper Midwest Environmental Sciences Center, 2630 Fanta Reed Road, La Crosse, WI 54603, USA, steven_zigler@usgs.gov Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 180 EP - 187 VL - 19 IS - 1 SN - 0275-5947, 0275-5947 KW - ARC/INFO KW - Paddlefish KW - USA KW - USA, Mississippi R. KW - diel movement KW - radiotelemetry KW - Water Resources Abstracts; Ecology Abstracts; ASFA 1: Biological Sciences & Living Resources KW - Rivers KW - Sonic tags KW - Habitat KW - Polyodon spathula KW - Local movements KW - Computer Programs KW - Aquatic Habitats KW - Habitat utilization KW - Activity patterns KW - Geographical Information Systems KW - Fish Behavior KW - Fish Migration KW - Tracking Techniques KW - SW 6090:Fisheries engineering KW - Q1 08421:Migrations and rhythms KW - SW 4070:Ecological impact of water development KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17371403?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=North+American+Journal+of+Fisheries+Management&rft.atitle=Diel+movement+and+habitat+use+by+paddlefish+in+Navigation+Pool+8+of+the+upper+Mississippi+River&rft.au=Zigler%2C+S+J%3BDewey%2C+M+R%3BKnights%2C+B+C&rft.aulast=Zigler&rft.aufirst=S&rft.date=1999-02-01&rft.volume=19&rft.issue=1&rft.spage=180&rft.isbn=&rft.btitle=&rft.title=North+American+Journal+of+Fisheries+Management&rft.issn=02755947&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Local movements; Sonic tags; Habitat; Activity patterns; Rivers; Habitat utilization; Computer Programs; Aquatic Habitats; Tracking Techniques; Fish Migration; Fish Behavior; Geographical Information Systems; Polyodon spathula ER - TY - JOUR T1 - Importance of mechanical disaggregation in chemical weathering in a cold alpine environment, San Juan Mountains, Colorado AN - 17367762; 4570992 AB - Weathering of welded tuff near the summit of Snowshoe Mountain (3660 m) in southwestern Colorado was studied by analyzing infiltrating waters in the soil and associated solid phases. Infiltrating waters exhibit anomalously high potassium to silica ratios resulting from dissolution of a potassium-rich glass that occurs as a trace phase in the rock. In laboratory experiments using rock from the field site, initial dissolution generated potassium-rich solutions similar to those observed in the field. The anomalous potassium release decreased over time (about 1 month), after which the dominant cation was calcium, with a much lower potassium to silica ratio. The anomalous potassium concentrations observed in the infiltrating soil solutions result from weathering of freshly exposed rock surfaces. Continual mechanical disaggregation of the rock due to segregation freezing exposes fresh glass to weathering and thus maintains the source of potassium for the infiltrating water. The ongoing process of creation of fresh surfaces by physical processes is an important influence on the composition of infiltrating waters in the vadose zone. JF - Bulletin of the Geological Society of America AU - Hoch, A R AU - Reddy, M M AU - Drever, JI AD - U.S. Geological Survey, 3215 Marine Street, Boulder, Colorado 80303, USA, tonyhoch@usgs.gov Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 304 EP - 314 VL - 111 IS - 2 SN - 0016-7606, 0016-7606 KW - mechanical disaggregation KW - USA, Colorado, San Juan Mts., Snowshoe Mt. KW - Water Resources Abstracts KW - Aeration Zone KW - Alpine Regions KW - Silica KW - Cations KW - Freezing KW - Infiltration KW - Potassium KW - Weathering KW - Igneous Rocks KW - Soil Solution KW - SW 0870:Erosion and sedimentation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17367762?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=NOAA+Technical+Memorandum+NMFS+SEFSC&rft.atitle=THE+HAWKSBILL+TURTLES+OF+BUCK+ISLAND+REEF+NATIONAL+MONUMENT%3A+A+SHARED+RESOURCE+OF+THE+CARIBBEAN&rft.au=Hillis%2C+Z-M&rft.aulast=Hillis&rft.aufirst=Z-M&rft.date=1994-03-05&rft.volume=&rft.issue=351&rft.spage=&rft.isbn=&rft.btitle=&rft.title=NOAA+Technical+Memorandum+NMFS+SEFSC&rft.issn=&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Alpine Regions; Aeration Zone; Infiltration; Weathering; Potassium; Silica; Soil Solution; Freezing; Cations; Igneous Rocks ER - TY - JOUR T1 - Ground-water, large-lake interactions in Saginaw Bay, Lake Huron: A geochemical and isotopic approach AN - 17364522; 4570996 AB - Delineating the nature and extent of ground-water inputs is necessary to understand the hydrochemistry of large lakes. Characterizing the interaction between ground water and large lakes (e.g., the Great Lakes) is facilitated by the use of geochemical and isotopic data. In this study, pore waters were extracted from sediment cores collected from Saginaw Bay and the surrounding Saginaw lowland area; the geochemistry and stable isotope signature of these pore waters were used to identify sources for the water and solutes. Cores from Saginaw Bay and the Saginaw lowland area yielded strong vertical gradients in chloride concentrations, suggesting that a high-chloride source is present at depth. The spatial distribution of cores with elevated chloride concentrations corresponds to the regional distribution of chloride in ground water. Most of the Saginaw lowland area cores contain water with significantly lower delta super(18)O values than modern meteoric water, suggesting that the water had been recharged during a much cooler climate. The delta super(18)O values measured in pore waters (from Saginaw Bay cores) containing high chloride concentrations are similar to modern meteoric water; however, values lighter than modern meteoric water are encountered at depth. Chloride:bromide ratios, used to distinguish between different chloride sources, identify formation brine as the likely source for chloride. Transport models indicate that a combination of advection and diffusion is responsible for the observed Saginaw lowland area pore-water profiles. Pore-water profiles in Saginaw Bay sediments are produced primarily by diffusion and require significantly less time to evolve. An upward flux of solutes derived from formation brine could occur elsewhere within the Great Lakes region and significantly affect the geochemical cycling of chloride and other contaminants (e.g., trace metals). JF - Bulletin of the Geological Society of America AU - Kolak, J J AU - Long, D T AU - Matty, J M AU - Larson, G J AU - Sibley, D F AU - Councell, T B AD - U.S. Geological Survey, Menlo Park, California 94025, USA, jkolak@usgs.gov Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 177 EP - 188 VL - 111 IS - 2 SN - 0016-7606, 0016-7606 KW - North America, Great Lakes KW - USA, Michigan, Huron L., Saginaw Bay KW - Water Resources Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources KW - Pore water KW - Isotopes KW - Surface water KW - Geochemistry KW - Isotope Studies KW - Interstitial Water KW - Sediments KW - Lakes KW - Surface-groundwater Relations KW - Profiles KW - Meteoric Water KW - Ground water KW - SW 0810:General KW - Q2 09187:Geochemistry of sediments UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17364522?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Bulletin+of+the+Geological+Society+of+America&rft.atitle=Ground-water%2C+large-lake+interactions+in+Saginaw+Bay%2C+Lake+Huron%3A+A+geochemical+and+isotopic+approach&rft.au=Kolak%2C+J+J%3BLong%2C+D+T%3BMatty%2C+J+M%3BLarson%2C+G+J%3BSibley%2C+D+F%3BCouncell%2C+T+B&rft.aulast=Kolak&rft.aufirst=J&rft.date=1999-02-01&rft.volume=111&rft.issue=2&rft.spage=177&rft.isbn=&rft.btitle=&rft.title=Bulletin+of+the+Geological+Society+of+America&rft.issn=00167606&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Pore water; Isotopes; Lakes; Profiles; Surface water; Geochemistry; Ground water; Sediments; Surface-groundwater Relations; Meteoric Water; Interstitial Water; Isotope Studies ER - TY - JOUR T1 - Modeling Population Dynamics of a Songbird Exposed to Parasitism and Predation and Evaluating Management Options AN - 17364278; 4560469 AB - Nest predation and parasitism are the primary causes of reproductive failure in northern temperate passerine songbirds. I demonstrate the use of a two-step modeling approach to determine the implications of parasitism and nest predation for the population dynamics of songbird populations and to quantitatively evaluate alternative options for their management. I used a model to predict seasonal fecundity from parameters of nest success, productivity, and breeding season length (Pease & Grzybowski 1995) and a stage-based matrix model to examine population dynamics. I used this approach to model the population dynamics of the Puerto Rican Vireo (Vireo latimeri), a single-island endemic species that is exposed to high rates of parasitism by a nonnative brood parasite and to nest predation by introduced mammalian predators. The analysis showed that the introduction of the Shiny Cowbird (Molothrus bonariensis), rather than the mammalian nest predators, caused this population to become a "sink" and is probably the cause of recent population declines. Moreover, the analysis explicitly shows that knowledge of the relationships among parasitism, predation, and population growth rate can aid in designing an effective conservation strategy. This modeling approach can be used to determine the reproductive health of a population over a range of parasitism and predation values, to test alternative hypotheses for the cause of an observed population decline, and to make a priori predictions about the outcomes of specific management actions. JF - Conservation Biology AU - Woodworth, B L AD - Pacific Island Ecosystems Research Center, Biological Resources Division, U.S. Geological Survey, Kilauea Field Station, P.O. Box 44, Hawaii National Park, HI 96718, USA, bethany_woodworth@usgs.gov Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 67 EP - 76 VL - 13 IS - 1 SN - 0888-8892, 0888-8892 KW - Perching birds KW - Ecology Abstracts KW - Predation KW - brood parasitism KW - Population decline KW - Population dynamics KW - Passeriformes KW - Models KW - D 04671:Birds KW - D 04003:Modeling, mathematics, computer applications UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17364278?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Conservation+Biology&rft.atitle=Modeling+Population+Dynamics+of+a+Songbird+Exposed+to+Parasitism+and+Predation+and+Evaluating+Management+Options&rft.au=Woodworth%2C+B+L&rft.aulast=Woodworth&rft.aufirst=B&rft.date=1999-02-01&rft.volume=13&rft.issue=1&rft.spage=67&rft.isbn=&rft.btitle=&rft.title=Conservation+Biology&rft.issn=08888892&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Passeriformes; Predation; brood parasitism; Population dynamics; Population decline; Models ER - TY - JOUR T1 - Semipermeable membrane devices used to estimate bioconcentration of polychlorinated biphenyls AN - 17361845; 4566626 AB - Aquatic organisms passively accumulate hydrophobic organic compounds, such as polychlorinated biphenyls, even when ambient water concentrations of the contaminant are below analytical detection limits. However, contaminant concentrations in tissue samples are subject to an inherently high level of variability due to differences in species, life stage, and gender bioconcentration potentials. Semipermeable membrane devices (SPMDs) were used to sample Aroclor 1254, a mixture of readily bioconcentrated polychlorinated biphenyls (PCBs), in a contaminated wetland near Flat Top, WV. The devices consisted of triolein, a lipid found in fish, enclosed in a polyethylene membrane. SPMDs were deployed in the water column and in direct contact with wetland sediments along a previously identified concentration gradient of PCBs. The devices were retrieved after a 25-day exposure period. Analytes were recovered by dialyzing the devices in nanograde hexane. Hexane dialysates were condensed and analyzed by gas chromatography. All deployed devices sequestered quantifiable amounts of Aroclor 1254. Water-column SPMDs accumulated PCBs far in excess of ambient water concentrations. The devices contacting sediments accumulated PCBs at all sites, though accumulated concentrations did not exceed concentrations in sediment. Patterns of PCB concentration in the devices corresponded to the identified gradient at the site. Results from the water-column SPMDs were used to estimate the concentration of the dissolved, bioavailable fraction of PCBs present in the water column. These concentrations ranged from 0.01 to 0.09 mu g/L of bioavailable Aroclor 1254. JF - Journal of the American Water Resources Association AU - Chambers, D B AD - U.S. Geological Survey, Water Resources Division, 11 Dunbar Street, Charleston, WV 25301, USA, dbchambe@usgs.gov Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 143 EP - 154 VL - 33 IS - 1 SN - 1093-474X, 1093-474X KW - Aroclor 1254 KW - USA, West Virginia, Flat Top KW - Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Water Resources Abstracts KW - Aquatic organisms KW - Pollution monitoring KW - Aroclors KW - Water sampling KW - Polychlorinated Biphenyls KW - Lipids KW - Aquatic Animals KW - Polychlorinated biphenyls KW - Wetlands KW - PCB compounds KW - PCB KW - Membranes KW - Pollution detection KW - Estimating KW - Fish (see also Individual groups) KW - Sampling instruments KW - Bioaccumulation KW - Water Pollution Effects KW - Analytical techniques KW - Fish KW - Organic compounds KW - Contaminants KW - Pollution (Water) KW - P 2000:FRESHWATER POLLUTION KW - Q5 08502:Methods and instruments KW - SW 3030:Effects of pollution KW - AQ 00003:Monitoring and Analysis of Water and Wastes UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17361845?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Water+Resources+Association&rft.atitle=Semipermeable+membrane+devices+used+to+estimate+bioconcentration+of+polychlorinated+biphenyls&rft.au=Chambers%2C+D+B&rft.aulast=Chambers&rft.aufirst=D&rft.date=1999-02-01&rft.volume=33&rft.issue=1&rft.spage=143&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Water+Resources+Association&rft.issn=1093474X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Pollution detection; Bioaccumulation; Membranes; Analytical techniques; PCB; Pollution monitoring; Water sampling; Lipids; Wetlands; Organic compounds; Contaminants; Sampling instruments; PCB compounds; Aquatic organisms; Polychlorinated biphenyls; Fish (see also Individual groups); Pollution (Water); Aroclors; Estimating; Water Pollution Effects; Polychlorinated Biphenyls; Aquatic Animals; Fish ER - TY - JOUR T1 - Numerical model of a tracer test on the Santa Clara River, Ventura County, California AN - 17359559; 4566625 AB - To better understand the flow processes, solute-transport processes, and ground-water/surface-water interactions on the Santa Clara River in Ventura County, California, a 24-hour fluorescent-dye tracer study was performed under steady-state flow conditions on a 45-km reach of the river. The study reach includes perennial (uppermost and lowermost) subreaches and ephemeral subreaches of the lower Piru Creek and the middle Santa Clara River. The tracer-test data were used to calibrate a one-dimensional flow model (DAFLOW) and a solute-transport model (BLTM). The dye-arrival times at each sample location were simulated by calibrating the velocity parameters in DAFLOW. The simulations of dye transport indicated that (1) ground-water recharge explains the loss of mass in the ephemeral middle subreaches, and (2) groundwater recharge does not explain the loss of mass in the perennial uppermost and lowermost subreaches. The observed tracer curves in the perennial subreaches were indicative of sorptive dye losses, transient storage, and (or) photodecay - these phenomena were simulated using a linear decay term. However, analysis of the linear decay terms indicated that photodecay was not a dominant source of dye loss. JF - Journal of the American Water Resources Association AU - Nishikawa, T AU - Paybins, K S AU - Izbicki, JA AU - Reichard, E G AD - Geologist, Hydrologist, and Research Hydrologist, U.S. Geological Survey, 5735 Kearny Villa Road, Suite O, San Diego, CA 92123, USA, tnish@usgs.gov Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 133 EP - 142 VL - 33 IS - 1 SN - 1093-474X, 1093-474X KW - USA, California, Ventura Cty. KW - Aqualine Abstracts; ASFA 2: Ocean Technology Policy & Non-Living Resources; Water Resources Abstracts KW - Rivers KW - Flow rates KW - Stream flow KW - Solutes KW - Tracers KW - Flow Velocity KW - Groundwater recharge KW - Surface-groundwater Relations KW - Dyes KW - Solute Transport KW - Water currents KW - River Flow KW - Groundwater Recharge KW - AQ 00001:Water Resources and Supplies KW - SW 0835:Streamflow and runoff KW - Q2 09171:Dynamics of lakes and rivers UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17359559?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+the+American+Water+Resources+Association&rft.atitle=Numerical+model+of+a+tracer+test+on+the+Santa+Clara+River%2C+Ventura+County%2C+California&rft.au=Nishikawa%2C+T%3BPaybins%2C+K+S%3BIzbicki%2C+JA%3BReichard%2C+E+G&rft.aulast=Nishikawa&rft.aufirst=T&rft.date=1999-02-01&rft.volume=33&rft.issue=1&rft.spage=133&rft.isbn=&rft.btitle=&rft.title=Journal+of+the+American+Water+Resources+Association&rft.issn=1093474X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Rivers; Tracers; Dyes; Water currents; Solutes; Groundwater recharge; Flow rates; Stream flow; Flow Velocity; Surface-groundwater Relations; Solute Transport; River Flow; Groundwater Recharge ER - TY - JOUR T1 - Requiem for a Sagebrush Ecosystem? AN - 17305126; 4571106 AB - Early settlers crossing the Intermountain West described the Snake River Plain as covered by a vast sea of sagebrush, or wormwood (Artemisia spp.), as far as the eye could see (Fremont 1845, Yensen 1982). Today, anyone crossing that same area will find sagebrush in fragmented remnants and the vast sea is instead a grassland of an exotic annual, cheatgrass (Bromus tectorum). In little more than a century, the form and function of an entire landscape have been altered, perhaps irreversibly. JF - Northwest Science AU - Knick, ST AD - USGS Forest and Rangeland Ecosystem Science Center, Snake River Field Station, 970 Lusk Street, Boise, Idaho 83706, sknick@eagle.idbsu.edu Y1 - 1999/02// PY - 1999 DA - Feb 1999 VL - 73 IS - 1 SN - 0029-344X, 0029-344X KW - Sagebrush KW - USA, Idaho KW - human impact KW - Ecology Abstracts KW - Semiarid environments KW - Bromus tectorum KW - Artemisia KW - Introduced species KW - Habitat fragmentation KW - D 04130:Arid zones UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17305126?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Northwest+Science&rft.atitle=Requiem+for+a+Sagebrush+Ecosystem%3F&rft.au=Knick%2C+ST&rft.aulast=Knick&rft.aufirst=ST&rft.date=1999-02-01&rft.volume=73&rft.issue=1&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Northwest+Science&rft.issn=0029344X&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Artemisia; Bromus tectorum; Introduced species; Habitat fragmentation; Semiarid environments ER - TY - JOUR T1 - Photosynthetic pathway diversity in a seasonal pool community AN - 17297285; 4504651 AB - 1. Photosynthetic pathway diversity was evaluated for the dominant species in a seasonally aquatic community in the south-western USA using super(14)C pulse-chase techniques. 2. Under submerged conditions, only about half of the species were clearly C sub(3), three of the 15 dominants were CAM, one species was C sub(4) and three were potentially assimilating carbon with both C sub(3) and C sub(4) fixation. 3. During the brief terrestrial stage in the life history of these amphibious plants, both the CAM and the C sub(3) + C sub(4) species switched to C sub(3), whereas the C sub(4) species did not switch. 4. Numerous variations were apparent; for example, the C sub(4) species, while exhibiting a biochemical pathway indistinguishable from terrestrial C sub(4) plants, lacked Kranz anatomy in the aquatic foliage. Also, despite well-developed CAM in several species, others exhibited low-level diel changes in acidity, apparently not indicative of CAM. 5. Species with C sub(4) or CAM CO sub(2) concentrating mechanisms lacked the capacity for bicarbonate uptake, an alternative CO sub(2) concentrating mechanism found in certain C sub(3) species in this community. 6. Rubisco/PEPC in aquatic foliage was higher in C sub(3) species than in C sub(4), CAM or putative C sub(3) + C sub(4) species. In the terrestrial phase, as expected, the switch from CAM or C sub(3) + C sub(4) to strictly C sub(3) assimilation was associated with a substantial increase in Rubisco/PEPC. Quite unexpected, however, was the substantial increase in this ratio in terrestrial C sub(3) foliage. It is hypothesized that submerged C sub(3) plants utilize PEPC for recycling of respiratory CO sub(2) and/or C sub(4) phototrophism under field conditions of limited CO sub(2) and O sub(2) saturation, and this is lost in the terrestrial foliage. JF - Functional Ecology AU - Keeley, JE AD - USGS Biological Resources Division, Western Ecological Research Center, Sequoia-Kings Canyon Field Station, Three Rivers, CA 93271-9700, USA Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 106 EP - 118 VL - 13 IS - 1 SN - 0269-8463, 0269-8463 KW - USA KW - seasonal variations KW - ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Photosynthesis KW - Temporary ponds KW - Aquatic plants KW - Pools KW - Freshwater KW - Primary production KW - Carbon dioxide fixation KW - Life history KW - Q1 08463:Habitat community studies KW - D 04625:Plants - general UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17297285?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Topographic+profiles+and+their+implications+for+late+Quaternary+activity+on+the+Bare+Mountain+Fault%2C+Nye+County%2C+Nevada&rft.au=Klinger%2C+Ralph+E%3BAnderson%2C+Larry+W%3BAnonymous&rft.aulast=Klinger&rft.aufirst=Ralph&rft.date=1994-02-01&rft.volume=26&rft.issue=2&rft.spage=53&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Life history; Photosynthesis; Temporary ponds; Aquatic plants; Pools; Primary production; Carbon dioxide fixation; Freshwater DO - http://dx.doi.org/10.1046/j.1365-2435.1999.00294.x ER - TY - JOUR T1 - Characterizing fish community diversity across Virginia landscapes: Prerequisite for conservation AN - 17278459; 4513517 AB - The number of community types occurring within landscapes is an important, but often unprotected, component of biological diversity. Generally applicable protocols for characterizing community diversity need to be developed to facilitate conservation. We used several multivariate techniques to analyze geographic variation in the composition of fish communities in Virginia streams. We examined relationships between community composition and six landscape variables: drainage basin, physiography, stream order, elevation, channel slope, and map coordinates. We compared patterns at two scales (statewide and subdrainage-specific) to assess sensitivity of community classification to spatial scale. We also compared patterns based on characterizing communities by species composition vs. ecological composition. All landscape variables explained significant proportions of the variance in community composition. Statewide, they explained 32% of the variance in species composition and 48% of the variance in ecological composition. Typical communities in each drainage or physiography were statistically distinctive. Communities in different combinations of drainage, physiography, and stream size were even more distinctive, but composition was strongly spatially autocorrelated. Ecological similarity and species similarity of community pairs were strongly related, but replacement by ecologically similar species was common among drainage-physiography combinations. Landscape variables explained significant proportions of variance in community composition within selected subdrainages, but proportions were less than at the statewide scale, and the explanatory power of individual variables varied considerably among subdrainages. Community variation within subdrainages appeared to be much more closely related to environmental variation than to replacement among ecologically similar species. Our results suggest that taxonomic and ecological characterizations of community composition are complementary; both are useful in a conservation context. Landscape features such as drainage, physiography, and water body size generally may provide a basis for assessing aquatic community diversity, especially in regions where the biota is poorly known. Systematic conservation of community types would be a major advance relative to most current conservation programs, which typically focus narrowly on populations of imperiled species. More effective conservation of aquatic biodiversity will require new approaches that recognize the value of both species and assemblages, and that emphasize protection of key landscape-scale processes. JF - Ecological Applications AU - Angermeier, P L AU - Winston, M R AD - United States Geological Survey, Virginia Cooperative Fish and Wildlife Research Unit, Department of Fisheries and Wildlife Sciences, Virginia Polytechnic Institute and State University, Blacksburg, VA 24061-0321, USA Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 335 EP - 349 VL - 9 IS - 1 SN - 1051-0761, 1051-0761 KW - USA, Virginia KW - landscape-scale processes KW - ASFA 3: Aquatic Pollution & Environmental Quality; ASFA 1: Biological Sciences & Living Resources; Ecology Abstracts KW - Classification systems KW - Rivers KW - Ecological distribution KW - Landscape KW - Freshwater KW - Freshwater fish KW - Streams KW - Pisces KW - Community composition KW - Species diversity KW - Nature conservation KW - Conservation KW - Species composition KW - Q5 08523:Conservation, wildlife management and recreation KW - Q1 08341:General KW - D 04668:Fish UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17278459?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Applications&rft.atitle=Characterizing+fish+community+diversity+across+Virginia+landscapes%3A+Prerequisite+for+conservation&rft.au=Angermeier%2C+P+L%3BWinston%2C+M+R&rft.aulast=Angermeier&rft.aufirst=P&rft.date=1999-02-01&rft.volume=9&rft.issue=1&rft.spage=335&rft.isbn=&rft.btitle=&rft.title=Ecological+Applications&rft.issn=10510761&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Rivers; Classification systems; Community composition; Ecological distribution; Species diversity; Nature conservation; Conservation; Species composition; Freshwater fish; Streams; Landscape; Pisces; USA, Virginia; Freshwater ER - TY - JOUR T1 - Survival and physiologic response of Common Amakihi and Japanese white-eyes during simulated translocation AN - 17256716; 4527636 AB - We evaluated the effects of three translocation trials on Common Amakihi (Hemignathus virens) and Japanese White-eyes (Zosterops japonicus). Trial 1 involved capturing birds, transporting them on rough roads for 4 hr followed by holding in an aviary for 48 hr without overnight thermal support prior to release. Trial 2 involved capture, then holding in an aviary for 48 hr with overnight thermal support followed by transport for 4 hr prior to release. Trial 3 and 1 were identical except that overnight thermal support was provided during trial 3. We monitored survival, food consumption, weight change, and fecal production during captivity as well as changes in hematocrit, estimated total solids, heterophil to lymphocyte ratios, plasma uric acid, and creatinine phosphokinase (CPK) at capture and release. Survival was significantly lower for Amakihi during trial 1 (no thermal support). Birds that died lost significantly more weight than those that survived. Regardless of trial, birds responded to translocation by a combination of weight loss, anemia, hypoproteinemia, and elevated heterophil to lymphocyte ratio, uric acid, and CPK levels. The first 24 hr of captivity posed the greatest risk to birds regardless of whether transport or holding occurred first. Food consumption, fecal production, and weight all decreased at night, and overnight thermal support during holding was critical if ambient temperatures dipped to freezing. We recommend that if small passerines are to be held for > 12 hr, they be monitored individually for weight loss, food consumption, and fecal production. JF - Condor AU - Work, T M AU - Massey, J G AU - Johnson, L AU - Dougill, S AU - Banko, P C AD - U.S. Geological Survey Biological Resources Division, National Wildlife Health Center, Honolulu Field Station, P.O. Box 50167, Honolulu, HI 96850, USA, thierry-work@usgs.gov Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 21 EP - 27 VL - 101 IS - 1 SN - 0010-5422, 0010-5422 KW - Common 'amakihi KW - Japanese white-eye KW - Ecology Abstracts KW - Zosterops japonicus KW - Food consumption KW - Body weight KW - Survival KW - Hematology KW - Translocation KW - Hemignathus virens KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17256716?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Condor&rft.atitle=Survival+and+physiologic+response+of+Common+Amakihi+and+Japanese+white-eyes+during+simulated+translocation&rft.au=Work%2C+T+M%3BMassey%2C+J+G%3BJohnson%2C+L%3BDougill%2C+S%3BBanko%2C+P+C&rft.aulast=Work&rft.aufirst=T&rft.date=1999-02-01&rft.volume=101&rft.issue=1&rft.spage=21&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Hemignathus virens; Zosterops japonicus; Translocation; Food consumption; Survival; Body weight; Hematology ER - TY - JOUR T1 - Reproductive characteristics of migratory Golden Eagles in Denali National Park, Alaska AN - 17248355; 4527645 AB - We describe reproductive characteristics of Golden Eagles (Aquila chrysaetos) breeding in Denali National Park, Alaska during an entire snowshoe hare (Lepus americanus) cycle, 1988-1997. Data on nesting eagles were collected at 58 to 72 nesting areas annually using two aerial surveys. Surveys were conducted during the incubation period to determine occupancy and nesting activities and late in the nestling period to count nestlings and determine nesting success. Annual occupancy rates of nesting areas did not vary significantly, whereas laying rates, success rates, and mean brood size varied significantly over the study period. Fledgling production for the study population varied sevenfold during the ten-year period. Laying rates, mean brood size, and overall population productivity were significantly correlated with abundance of cyclic snowshoe hare and Willow Ptarmigan (Lagopus lagopus) populations. Reproductive rates of Golden Eagles in Denali were similar to those of Golden Eagles from other high latitude study areas in North America, but lower than for Golden Eagles from temperate zone study areas in North America. JF - Condor AU - McIntyre, CL AU - Adams, L G AD - National Park Service, 201 1st. Ave., Fairbanks, AK 99701, USA, carol_mcintyre@nps.gov Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 115 EP - 123 VL - 101 IS - 1 SN - 0010-5422, 0010-5422 KW - Golden eagle KW - USA, Alaska KW - Animal Behavior Abstracts; Ecology Abstracts KW - Aquila chrysaetos KW - Reproduction KW - D 04671:Birds KW - Y 25426:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17248355?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Condor&rft.atitle=Reproductive+characteristics+of+migratory+Golden+Eagles+in+Denali+National+Park%2C+Alaska&rft.au=Leipnik%2C+M+R%3BKemp%2C+K+K%3BLoaiciga%2C+HA&rft.aulast=Leipnik&rft.aufirst=M&rft.date=1994-01-01&rft.volume=&rft.issue=180&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Water+Resources+Journal&rft.issn=03778053&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Aquila chrysaetos; Reproduction ER - TY - JOUR T1 - Long-term Prairie Falcon population changes in relation to prey abundance, weather, land uses, and habitat conditions AN - 17246726; 4527637 AB - We studied a nesting population of Prairie Falcons (Falco mexicanus) in the Snake River Birds of Prey National Conservation Area (NCA) from 1974-1997 to identify factors that influence abundance and reproduction. Our sampling period included two major droughts and associated crashes in Townsend's ground squirrel (Spermophilus townsendii) populations. The number of Prairie Falcon pairs found on long-term survey segments declined significantly from 1976-1997. Early declines were most severe at the eastern end of the NCA, where fires and agriculture have changed native shrubsteppe habitat. More recent declines occurred in the portion of canyon near the Orchard Training Area (OTA), where the Idaho Army National Guard conducts artillery firing and tank maneuvers. Overall Prairie Falcon reproductive rates were tied closely to annual indexes of ground squirrel abundance, but precipitation before and during the breeding season was related inversely to some measures of reproduction. Most reproductive parameters showed no significant trends over time, but during the 1990s, nesting success and productivity were lower in the stretch of canyon near the OTA than in adjacent areas. Extensive shrub loss, by itself, did not explain the pattern of declines in abundance and reproduction that we observed. Recent military training activities likely have interacted with fire and livestock grazing to create less than favorable foraging opportunities for Prairie Falcons in a large part of the NCA. To maintain Prairie Falcon populations in the NCA, managers should suppress wildfires, restore native plant communities, and regulate potentially incompatible land uses. JF - Condor AU - Steenhof, K AU - Kochert, M N AU - Carpenter, L B AU - Lehman, R N AD - USGS Forest and Rangeland Ecosystem Science Center, Snake River Field Station, 970 Lusk Street, Boise, ID 83706, USA, ksteenho@eagle.idbsu.edu Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 28 EP - 41 VL - 101 IS - 1 SN - 0010-5422, 0010-5422 KW - Prairie falcon KW - USA, Idaho KW - Ecology Abstracts KW - Falco mexicanus KW - Population changes KW - Food availability KW - Precipitation KW - Land use KW - Breeding success KW - D 04671:Birds UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17246726?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Condor&rft.atitle=Long-term+Prairie+Falcon+population+changes+in+relation+to+prey+abundance%2C+weather%2C+land+uses%2C+and+habitat+conditions&rft.au=Steenhof%2C+K%3BKochert%2C+M+N%3BCarpenter%2C+L+B%3BLehman%2C+R+N&rft.aulast=Steenhof&rft.aufirst=K&rft.date=1999-02-01&rft.volume=101&rft.issue=1&rft.spage=28&rft.isbn=&rft.btitle=&rft.title=Condor&rft.issn=00105422&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Falco mexicanus; Precipitation; Breeding success; Population changes; Food availability; Land use ER - TY - JOUR T1 - Natural regulation in Yellowstone National Park's northern range AN - 17228768; 4513492 AB - Although the debate over natural regulation as practiced in Yellowstone National Park has been underway since the initiation of the natural process management policy in 1969, controversy over the management of Yellowstone's northern range dates back to the beginning of the 20th century. The debate over natural regulation combines elements of scientific disagreement with contrasting social values. Some scientists and range managers critical of natural regulation management have viewed the northern range as seriously eroded and overgrazed due to an overpopulation of elk. Data, and the interpretations thereof, have been published supporting this viewpoint. Other scientists have challenged this opinion with the results of longer term studies and disparate interpretations of data gathered by the critics. Contrasting social values range from support for the "hands-off" management policy for ungulates in Yellowstone National Park to limiting ungulate populations to prevent eminent deterioration of the range. It is the opinion of the authors that extensive published data support the position that current elk populations and sympatric herbivores do not exceed the ecological carrying capacity of the northern range; therefore, the range is not overgrazed by ecological standards. The discourse over science-driven and value-driven opinion will, and should, continue: neither scientific thinking nor social values are immutable. JF - Ecological Applications AU - Huff, DE AU - Varley, J D AD - United States Department of the Interior, National Park Service, Intermountain Region, Denver, CO 80225, USA Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 17 EP - 29 VL - 9 IS - 1 SN - 1051-0761, 1051-0761 KW - USA, Yellowstone National Park KW - Ecology Abstracts KW - Wildlife management KW - Population regulation KW - National parks KW - D 04700:Management UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17228768?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Ecological+Applications&rft.atitle=Natural+regulation+in+Yellowstone+National+Park%27s+northern+range&rft.au=Huff%2C+DE%3BVarley%2C+J+D&rft.aulast=Huff&rft.aufirst=DE&rft.date=1999-02-01&rft.volume=9&rft.issue=1&rft.spage=17&rft.isbn=&rft.btitle=&rft.title=Ecological+Applications&rft.issn=10510761&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Population regulation; Wildlife management; National parks ER - TY - JOUR T1 - The Everglades: A Perspective on the Requirements and Applications for Vegetation Map and Database Products AN - 17192263; 4487321 AB - A collaborative effort by the National Park Service South Florida Natural Resources Center at Everglades National Park, the Center for Remote Sensing and Mapping Science at The University of Georgia, and the South Florida Water Management District has resulted in a seamless and complete GIS vegetation database of the southern Everglades using color-infrared (CIR) aerial photographs and a single vegetation classification system. This database contains spatial data for the vegetation communities within approximately 1.2 million hectares (ha) of South Florida's wetlands. The area covered includes Everglades National Park, Big Cypress National Preserve, Biscayne National Park, the Florida Panther National Wildlife Refuge, and the south Florida Water Management District Water Conservation Area 3. This detailed delineation of vegetation in the preserved lands of south Florida allows for the first time a quantitative analysis of Everglades vegetation data at the plant community level. In addition to this spatial database, several subset study areas have been identified in areas of special environmental interest for interpretation of large-scale aerial photographs and the development of high-resolution vegetation data sets. Together, these Everglades vegetation mapping efforts provide a baseline for establishing trends and monitoring changes related to the restoration and preservation of the Everglades. JF - Photogrammetric Engineering and Remote Sensing AU - Doren, R F AU - Rutchey, K AU - Welch, R AD - Southeast Regional Office, National Park Service, Florida International University, University Park, Miami, FL 33199, USA, dorenriu.edu Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 155 EP - 161 VL - 65 IS - 2 SN - 0099-1112, 0099-1112 KW - USA, Florida, Everglades KW - color-infrared aerial photographs KW - plant communities KW - remote sensing KW - ASFA 2: Ocean Technology Policy & Non-Living Resources; ASFA 1: Biological Sciences & Living Resources; Water Resources Abstracts KW - USA, Florida KW - Remote sensing KW - Aerial photography KW - Freshwater KW - Vegetation cover KW - Baseline studies KW - Classification KW - Wetlands KW - Mapping KW - Plant populations KW - Environmental monitoring KW - Refuges KW - Computers KW - Vegetation KW - Data collections KW - Databases KW - Geographical reference systems KW - Geographical information systems KW - Q2 09393:Remote geosensing KW - Q1 08463:Habitat community studies KW - SW 5080:Evaluation, processing and publication KW - Q2 09123:Conservation KW - Q1 08222:Geographical distribution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17192263?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Awaterresources&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Photogrammetric+Engineering+and+Remote+Sensing&rft.atitle=The+Everglades%3A+A+Perspective+on+the+Requirements+and+Applications+for+Vegetation+Map+and+Database+Products&rft.au=Doren%2C+R+F%3BRutchey%2C+K%3BWelch%2C+R&rft.aulast=Doren&rft.aufirst=R&rft.date=1999-02-01&rft.volume=65&rft.issue=2&rft.spage=155&rft.isbn=&rft.btitle=&rft.title=Photogrammetric+Engineering+and+Remote+Sensing&rft.issn=00991112&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Environmental monitoring; Refuges; Computers; Remote sensing; Data collections; Aerial photography; Vegetation cover; Databases; Baseline studies; Classification; Wetlands; Mapping; Geographical reference systems; Plant populations; Vegetation; Geographical information systems; USA, Florida, Everglades; USA, Florida; Freshwater ER - TY - JOUR T1 - Health status and relative exposure of mule deer and white-tailed deer to soil contaminants at the Rocky Mountain Arsenal AN - 17169348; 4469303 AB - We evaluated the health of 18 radio-collared deer [13 mule deer (Odocoileus hemionus) and 5 white-tailed deer (O. virginianus)] from the Rocky Mountain Arsenal, near Denver, Colorado, USA, a Superfund site contaminated with a variety of materials, including organochlorine pesticides, metals, and nerve gas production by-products. Radio-collared deer were tracked for 1 to 3 years (1989-1992) to identify relative exposure to contaminants based on telemetry locations plotted on grid maps depicting known soil contaminant concentrations. At the end of the study, all animals were in fair or good body condition at the time of necropsy. Mean ages of mule deer and white-tailed deer were 7.4 (range 4-12) and 10.6 years (range 5-17), respectively. At necropsy, tissues were collected from the deer for serology, histopathology, and analysis for eight chlorinated hydrocarbons and two metals. Detectable residues of mercury were found in the kidneys of 10 deer (range 0.055-0.096 mu g/g), dieldrin was found in fat (n = 9) (range 0.02-0.72 mu g/g), liver (n = 4) (range 0.017-0.12 mu g/g), and brain (n = 1, 0.018 mu g/g), and DDE was found in the muscle of one animal (0.02 mu g/g). Relative exposure estimates derived from telemetry and soil contamination data were correlated with tissue levels of dieldrin (p < 0.001) and mercury (p = 0.05). Two mule deer had severe testicular atrophy, and one of these animals also had antler deformities. The prevalence of antibodies against epizootic hemorrhagic disease serotype 2 was 85%. JF - Environmental Toxicology and Chemistry AU - Creekmore, TE AU - Whittaker, D G AU - Roy, R R AU - Franson, J C AU - Baker, D L AD - National Wildlife Health Center, U.S. Geological Survey, 6006 Schroeder Road, Madison, WI 53711, USA, terry_creekmore@usgs.gov Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 272 EP - 278 VL - 18 IS - 2 SN - 0730-7268, 0730-7268 KW - Mule deer KW - Odocoileus hemionus KW - Odocoileus virginianus KW - Rocky Mountain Arsenal KW - USA, Colorado KW - USA, Colorado, Rocky Mountain Arsenal KW - White-tailed deer KW - Pollution Abstracts; Toxicology Abstracts KW - Animals KW - Organochlorine compounds KW - Contamination KW - Heavy metals KW - Terrestrial environments KW - Pollution KW - Wildlife KW - Dieldrin KW - Pesticides (organochlorine) KW - Soil contamination KW - Chlorinated hydrocarbons KW - Soil pollution KW - Bioaccumulation KW - Pesticides KW - Mercury KW - Neurotoxins KW - X 24240:Miscellaneous KW - P 5000:LAND POLLUTION UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17169348?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxicologyabstracts&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Toxicology+and+Chemistry&rft.atitle=Health+status+and+relative+exposure+of+mule+deer+and+white-tailed+deer+to+soil+contaminants+at+the+Rocky+Mountain+Arsenal&rft.au=Creekmore%2C+TE%3BWhittaker%2C+D+G%3BRoy%2C+R+R%3BFranson%2C+J+C%3BBaker%2C+D+L&rft.aulast=Creekmore&rft.aufirst=TE&rft.date=1999-02-01&rft.volume=18&rft.issue=2&rft.spage=272&rft.isbn=&rft.btitle=&rft.title=Environmental+Toxicology+and+Chemistry&rft.issn=07307268&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Odocoileus hemionus; Odocoileus virginianus; Pesticides; Soil contamination; Organochlorine compounds; Animals; Terrestrial environments; Chlorinated hydrocarbons; Contamination; Bioaccumulation; Heavy metals; Neurotoxins; Mercury; Dieldrin; Wildlife; Pollution; Pesticides (organochlorine); Soil pollution ER - TY - JOUR T1 - Defining landscapes suitable for restoration of grizzly bears Ursus arctos in Idaho AN - 17156978; 4449592 AB - Informed management of large carnivores depends on the timely and useful presentation of relevant information. We describe an approach to evaluating carnivore habitat that uses pre-existing qualitative and quantitative information on humans and carnivores to generate coarse-scale maps of habitat suitability, habitat productivity, potential reserves, and areas of potential conflict. We use information pertinent to the contemplated reintroduction of grizzly bears Ursus arctos horribilis into central Idaho to demonstrate our approach. The approach uses measures of human numbers, their estimated distribution, road and trail access, and abundance and quality of bear foods to create standardized indices that are analogues of death and birth rates, respectively; the first subtracted from the second indicates habitat suitability (HS). We calibrate HS to sightings of grizzly bears in two ecosystems in northern Idaho and develop an empirical model from these same sightings based on piece-wise treatment of the variables contained in HS. Depending on whether the empirical model or HS is used, we estimate that there is 14 800 km super(2) of suitable habitat in two blocks or 37 100 km super(2) in one block in central Idaho, respectively. Both approaches show suitable habitat in the current Evaluation Area and in an area of southeastern Idaho centered on the Palisades Reservoir. Areas of highly productive habitat are concentrated in northern and western Idaho and in the Palisades area. Future conflicts between humans and bears are most likely to occur on the western and northern margins of suitable habitat in central Idaho, rather than to the east, where opposition to reintroduction of grizzly bears is currently strongest. JF - Biological Conservation AU - Merrill, T AU - Mattson, D J AU - Wright, R G AU - Quigley, H B AD - U.S.G.S. Forest and Rangeland Ecosystem Science Center and Department of Fish and Wildlife Resources, University of Idaho, Moscow, ID 83844-1136, USA, matt7281@novell.uidaho.edu Y1 - 1999/02// PY - 1999 DA - Feb 1999 SP - 231 EP - 248 VL - 87 IS - 2 SN - 0006-3207, 0006-3207 KW - Brown bear KW - USA, Idaho KW - Ecology Abstracts KW - Reintroduction KW - Wildlife management KW - Habitat availability KW - Landscape KW - Conservation KW - Ursus arctos KW - D 04705:Conservation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/17156978?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aecology&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Biological+Conservation&rft.atitle=Defining+landscapes+suitable+for+restoration+of+grizzly+bears+Ursus+arctos+in+Idaho&rft.au=Merrill%2C+T%3BMattson%2C+D+J%3BWright%2C+R+G%3BQuigley%2C+H+B&rft.aulast=Merrill&rft.aufirst=T&rft.date=1999-02-01&rft.volume=87&rft.issue=2&rft.spage=231&rft.isbn=&rft.btitle=&rft.title=Biological+Conservation&rft.issn=00063207&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2006-11-01 N1 - Last updated - 2011-12-13 N1 - SubjectsTermNotLitGenreText - Ursus arctos; Habitat availability; Conservation; Wildlife management; Reintroduction; Landscape ER - TY - JOUR T1 - Geological science; where does it fit in ecosystem management? AN - 818636064; 2011-006342 JF - Proceedings - George Wright Society Biennial Conference on Parks, Protected Areas & Cultural Sites AU - Smith, Vera A2 - Harmon, David Y1 - 1999 PY - 1999 DA - 1999 SP - 126 EP - 130 PB - U. S. National Park Service, George Wright Society, [varies] VL - 1999 KW - soils KW - protection KW - hydrology KW - geologic hazards KW - human activity KW - damage KW - watersheds KW - ecosystems KW - remediation KW - environmental management KW - habitat KW - mitigation KW - geographic information systems KW - natural resources KW - planning KW - land management KW - floods KW - environmental geology KW - drainage basins KW - information systems KW - fluvial environment KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/818636064?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+George+Wright+Society+Biennial+Conference+on+Parks%2C+Protected+Areas+%26+Cultural+Sites&rft.atitle=Geological+science%3B+where+does+it+fit+in+ecosystem+management%3F&rft.au=Smith%2C+Vera&rft.aulast=Smith&rft.aufirst=Vera&rft.date=1999-01-01&rft.volume=1999&rft.issue=&rft.spage=126&rft.isbn=&rft.btitle=&rft.title=Proceedings+-+George+Wright+Society+Biennial+Conference+on+Parks%2C+Protected+Areas+%26+Cultural+Sites&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - George Wright Society biennial conference; tenth conference on Research and resource management in parks and on public lands N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2011-01-01 N1 - Number of references - 18 N1 - Last updated - 2012-06-07 N1 - CODEN - #07363 N1 - SubjectsTermNotLitGenreText - damage; drainage basins; ecosystems; environmental geology; environmental management; floods; fluvial environment; geographic information systems; geologic hazards; habitat; human activity; hydrology; information systems; land management; mitigation; natural resources; planning; protection; remediation; soils; watersheds ER - TY - JOUR T1 - Movement of Road Salt to a Small New Hampshire Lake AN - 755133654; 13633806 AB - Runoff of road salt from an interstate highway in New Hampshire has led to contamination of a lake and a stream that flows into the lake, in spite of the construction of a diversion berm to divert road salt runoff out of the lake drainage basin. Chloride concentration in the stream has increased by over an order of magnitude during the 23 yr since the highway was opened, and chloride concentration in the lake has tripled. Road salt moves to the lake primarily via the contaminated stream, which provides 53% of all the chloride to the lake and only 3% of the total streamflow to the lake. The stream receives discharge of salty water from leakage through the diversion berm. Uncontaminated ground water dilutes the stream downstream of the berm. However, reversals of gradient during summer months, likely caused by transpiration from deciduous trees, result in flow of contaminated stream water into the adjacent ground water along the lowest 40-m reach of the stream. This contaminated ground water then discharges into the lake along a 70-m-wide segment of lake shore. Road salt is pervasive in the bedrock between the highway and the lake, but was not detected at all of the wells in the glacial overburden. Of the 500 m of shoreline that could receive discharge of saly ground water directly from the highway, only a 50-m-long segment appears to be contaminated. JF - Water, Air, & Soil Pollution AU - Rosenberry, DO AU - Bukaveckas, P A AU - Buso, D C AU - Likens, GE AU - Shapiro, A M AU - Winter, T C AD - U.S. Geological Survey, MS 413, Bldg. 53, DFC, Lakewood, CO, 80225, U.S.A, rosenber@usgs.gov Y1 - 1999/01// PY - 1999 DA - January 1999 SP - 179 EP - 206 PB - Springer-Verlag, Tiergartenstrasse 17 Heidelberg 69121 Germany VL - 109 IS - 1-4 SN - 0049-6979, 0049-6979 KW - Meteorological & Geoastrophysical Abstracts; Environment Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Pollution Abstracts; Aqualine Abstracts; Water Resources Abstracts KW - Chlorophylls KW - Chlorides KW - Basins KW - Glacial lakes KW - Freshwater KW - Streams KW - Flow rates KW - Lakes KW - Roads KW - Berms KW - Lake Basins KW - Chloride content of lake water KW - Highways KW - lake shores KW - deciduous trees KW - Leakage KW - Atmospheric pollution KW - Drainage KW - River discharge KW - Streamflow KW - Soil contamination KW - Water pollution KW - Soil pollution KW - Air pollution KW - Salts KW - Stream KW - downstream KW - summer KW - Groundwater pollution KW - Groundwater KW - Runoff KW - Q5 08503:Characteristics, behavior and fate KW - P 2000:FRESHWATER POLLUTION KW - SW 3020:Sources and fate of pollution KW - M2 556.16:Runoff (556.16) KW - AQ 00002:Water Quality KW - ENA 01:Air Pollution UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/755133654?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water%2C+Air%2C+%26+Soil+Pollution&rft.atitle=Movement+of+Road+Salt+to+a+Small+New+Hampshire+Lake&rft.au=Rosenberry%2C+DO%3BBukaveckas%2C+P+A%3BBuso%2C+D+C%3BLikens%2C+GE%3BShapiro%2C+A+M%3BWinter%2C+T+C&rft.aulast=Rosenberry&rft.aufirst=DO&rft.date=1999-01-01&rft.volume=109&rft.issue=1-4&rft.spage=179&rft.isbn=&rft.btitle=&rft.title=Water%2C+Air%2C+%26+Soil+Pollution&rft.issn=00496979&rft_id=info:doi/10.1023%2FA%3A1005041632056 LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2010-09-01 N1 - Last updated - 2016-09-29 N1 - SubjectsTermNotLitGenreText - Air pollution; Chlorophylls; Stream; River discharge; Groundwater pollution; Berms; Glacial lakes; Runoff; Water pollution; Soil pollution; Atmospheric pollution; Drainage; Chloride content of lake water; deciduous trees; Leakage; Chlorides; Basins; Soil contamination; Streams; Flow rates; Salts; Lakes; downstream; summer; Groundwater; Highways; lake shores; Roads; Streamflow; Lake Basins; Freshwater DO - http://dx.doi.org/10.1023/A:1005041632056 ER - TY - JOUR T1 - Factors influencing estimation of pesticide-related wildlife mortality. AN - 69668015; 10188201 AB - Free-ranging wildlife is regularly exposed to pesticides and can serve as a sentinel for human and environmental health. Therefore a comprehensive pesticide hazard assessment must incorporate the effects of actual applications on free-ranging wildlife. Mortality is the most readily reported wildlife effect, and the significance of these data can be realized only when placed in context with the factors that affect the gathering of this type of information. This paper reviews the variables that affect the collection of wildlife mortality data. Data show that most effects on wildlife are not observed, and much of observed mortality is not reported. Delays in reporting or in the response to a report and exposure to multiple stressors distort the exposure-effect relationship and can result in uncertainty in determining the cause of death. The synthesis of information strongly indicates that the actual number of affected animals exceeds the number recovered. JF - Toxicology and industrial health AU - Vyas, N B AD - United States Geological Survey, Patuxent Wildlife Research Center, Laurel, MD 20708, USA. nimish_vyas@usgs.gov PY - 1999 SP - 186 EP - 191 VL - 15 IS - 1-2 SN - 0748-2337, 0748-2337 KW - Pesticides KW - 0 KW - Index Medicus KW - Environmental Monitoring KW - Animals KW - Reproducibility of Results KW - Data Collection KW - Mortality -- trends KW - Pesticides -- toxicity KW - Animals, Wild UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/69668015?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Atoxline&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Toxicology+and+industrial+health&rft.atitle=Factors+influencing+estimation+of+pesticide-related+wildlife+mortality.&rft.au=Vyas%2C+N+B&rft.aulast=Vyas&rft.aufirst=N&rft.date=1999-01-01&rft.volume=15&rft.issue=1-2&rft.spage=186&rft.isbn=&rft.btitle=&rft.title=Toxicology+and+industrial+health&rft.issn=07482337&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date completed - 1999-05-25 N1 - Date created - 1999-05-25 N1 - Date revised - 2017-01-13 N1 - Last updated - 2017-01-18 ER - TY - JOUR T1 - Restoration of bighorn sheep metapopulations in and near 15 national parks; conservation of a severely fragmented species; Volume I, Planning, problem definition, findings, and restoration AN - 52429798; 1999-070155 JF - Open-File Report - U. S. Geological Survey AU - Singer, Francis J AU - Gudorf, Michele A Y1 - 1999 PY - 1999 DA - 1999 SP - 96 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - protection KW - Ruminantia KW - Chordata KW - regional planning KW - Ovis canadensis KW - Mammalia KW - national parks KW - Artiodactyla KW - public lands KW - remediation KW - Theria KW - conservation KW - ecology KW - Vertebrata KW - Eutheria KW - USGS KW - Tetrapoda KW - land use KW - Midwest KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52429798?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Singer%2C+Francis+J%3BGudorf%2C+Michele+A&rft.aulast=Singer&rft.aufirst=Francis&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Restoration+of+bighorn+sheep+metapopulations+in+and+near+15+national+parks%3B+conservation+of+a+severely+fragmented+species%3B+Volume+I%2C+Planning%2C+problem+definition%2C+findings%2C+and+restoration&rft.title=Restoration+of+bighorn+sheep+metapopulations+in+and+near+15+national+parks%3B+conservation+of+a+severely+fragmented+species%3B+Volume+I%2C+Planning%2C+problem+definition%2C+findings%2C+and+restoration&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 190 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. 15 tables, sketch maps N1 - SuppNotes - Includes appendices N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; Chordata; conservation; ecology; Eutheria; land use; Mammalia; Midwest; national parks; Ovis canadensis; protection; public lands; regional planning; remediation; Ruminantia; Tetrapoda; Theria; United States; USGS; Vertebrata ER - TY - JOUR T1 - Hydrologic stability study of the crown pillar, Crandon Deposit, in support of mine permit application AN - 52427825; 1999-068692 AB - This paper presents the results of an assessment of the hydrologic stability of the crown pillar that will remain after extraction of zinc and copper ores at the Crandon deposit in Forest County, Wisconsin. The crown pillar, defined as the rock remaining between the uppermost extent of mining and the base of surficial glacial deposits, is to be left in place to protect the surface and the glacial aquifer system. Hydrologic stability refers to potential changes in vertical hydraulic conductivity resulting from mining. Changes in hydraulic conductivity could result from mechanisms which include collapse of the crown pillar, joint movement, or strain changes in the crown pillar. The issue of hydrologic stability of the crown pillar had been raised by the Department of Natural Resources (DNR), State of Wisconsin, as a potential concern because of solute release to the groundwater regime after reflooding the backfilled mine. To address this issue, a series of two-and three-dimensional numerical analyses were conducted to predict the impact of mining to the crown pillar for the worst possible scenario. A three-dimensional simulation of the entire mine area was first conducted to evaluate the stress and strain changes in the crown pillar. A detailed analysis for selected locations within the crown pillar was then used to investigate the potential of joint shear and joint interaction. Maximum allowable strain, safety factors against joint slip, and change of hydraulic conductivity in the crown pillar were evaluated. A minimum crown pillar thickness of 100 ft was established based on the analysis results. The numerical analyses concluded that there will be no measurable impact to the hydraulic regime due to mining. JF - Proceedings - Symposium on Rock Mechanics AU - Hardy, M P AU - Lin, M AU - Black, K A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 473 EP - 480 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - United States KW - hydrology KW - mining KW - geologic hazards KW - underground mining KW - strain KW - roof control KW - zinc ores KW - stress KW - stability KW - joints KW - Crandon Deposit KW - Forest County Wisconsin KW - ground water KW - fractures KW - style KW - mining geology KW - metal ores KW - copper ores KW - hydraulic conductivity KW - Wisconsin KW - pillars KW - 30:Engineering geology KW - 27A:Economic geology, geology of ore deposits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52427825?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Hydrologic+stability+study+of+the+crown+pillar%2C+Crandon+Deposit%2C+in+support+of+mine+permit+application&rft.au=Hardy%2C+M+P%3BLin%2C+M%3BBlack%2C+K&rft.aulast=Hardy&rft.aufirst=M&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=473&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 7 N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - copper ores; Crandon Deposit; Forest County Wisconsin; fractures; geologic hazards; ground water; hydraulic conductivity; hydrology; joints; metal ores; mining; mining geology; pillars; roof control; stability; strain; stress; style; underground mining; United States; Wisconsin; zinc ores ER - TY - JOUR T1 - Pore pressure and confining stress dependence of poroelastic linear compressibilities and Skempton's B coefficient for Berea Sandstone AN - 52427793; 1999-068679 AB - Experimental measurements of linear compressibilities and Skempton's B coefficient were made at thirteen pore pressure and confining hydrostatic stress pairs under drained, undrained, and unjacketed pore fluid boundary conditions. The following results were obtained: 1) The linear compressibilities decreased in a non-linear manner as the effective stress increased. The rate of decrease is greatest at lower effective stresses. 2) Anisotropy, measured as the ratio between the linear compressibilities perpendicular and parallel to the bedding plane, is greatest at low effective stresses for the drained and undrained pore fluid boundary conditions. The unjacketed compressibility shows little anisotropy. As the effective stress increases, the anisotropy decreases until the sample behaves isotropically at the higher effective stresses. These data were also used to calculate pore compressibilities as a check of the assumption that the grain compressibility equals the pore compressibility. JF - Proceedings - Symposium on Rock Mechanics AU - Hart, D J AU - Wang, H F A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 365 EP - 371 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - United States KW - elasticity KW - Paleozoic KW - microcracks KW - stress KW - Berea Sandstone KW - sandstone KW - porosity KW - boundary conditions KW - rock mechanics KW - sedimentary rocks KW - cracks KW - pore pressure KW - clastic rocks KW - hydrostatic pressure KW - anisotropy KW - compressibility KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52427793?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Pore+pressure+and+confining+stress+dependence+of+poroelastic+linear+compressibilities+and+Skempton%27s+B+coefficient+for+Berea+Sandstone&rft.au=Hart%2C+D+J%3BWang%2C+H+F&rft.aulast=Hart&rft.aufirst=Robert&rft.date=1994-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=A+field-trip+guide+to+Yellowstone+National+Park%2C+Wyoming%2C+Montana%2C+and+Idaho%3B+volcanic%2C+hydrothermal%2C+and+glacial+activity+in+the+region&rft.title=A+field-trip+guide+to+Yellowstone+National+Park%2C+Wyoming%2C+Montana%2C+and+Idaho%3B+volcanic%2C+hydrothermal%2C+and+glacial+activity+in+the+region&rft.issn=8755531X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 19 N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - anisotropy; Berea Sandstone; boundary conditions; clastic rocks; compressibility; cracks; elasticity; hydrostatic pressure; microcracks; Paleozoic; pore pressure; porosity; rock mechanics; sandstone; sedimentary rocks; stress; United States ER - TY - JOUR T1 - Modes of fracture initiation in thick-wall cylinder experiments AN - 52427762; 1999-068675 AB - This paper presents a bifurcation analysis of a thick-wall cylinder which is loaded with increasing radial internal or external pressure. Material behaviour is modelled by large strain elastoplastic deformation theory of the Drucker-Prager solid. Stability analysis is carried out along the primary equilibrium path to examine possible emergence of bifurcations that may lead to different failure modes. The model is used to investigate the effect of bifurcation modes on the initiation of a tensile fracture and to interpret the experimental results obtained from fracturing tests on thick-wall cylinders. JF - Proceedings - Symposium on Rock Mechanics AU - Papanastasiou, Panos AU - Cook, John AU - Durban, David A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 333 EP - 340 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - in situ KW - strain KW - Jurassic KW - shale KW - stress KW - mathematical models KW - deformation KW - Mesozoic KW - rock mechanics KW - fractures KW - sedimentary rocks KW - boreholes KW - pore pressure KW - elastoplastic materials KW - deep drilling KW - shear KW - drilling KW - clastic rocks KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52427762?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Modes+of+fracture+initiation+in+thick-wall+cylinder+experiments&rft.au=Papanastasiou%2C+Panos%3BCook%2C+John%3BDurban%2C+David&rft.aulast=Papanastasiou&rft.aufirst=Panos&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=333&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 11 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - boreholes; clastic rocks; deep drilling; deformation; drilling; elastoplastic materials; fractures; in situ; Jurassic; mathematical models; Mesozoic; pore pressure; rock mechanics; sedimentary rocks; shale; shear; strain; stress ER - TY - JOUR T1 - Methodology for characterizing very large rock masses; an illustrative example AN - 52427735; 1999-068666 AB - A geoengineering project is discussed in this paper for illustrating the methodology that is used in practice for characterizing and analyzing the behavior of large rock masses. The project concerns an assessment of stability of a mountain slope affected by a deep-seated deformation phenomenon. An important national highway runs along the toe of the slope and two penstocks for a hydroelectric scheme are founded on one section of the slope. The annual rate of movement of the overall slope during the past 15 years varied between 1.5 and 2 cm. The methodology developed and used for characterizing the behavior of the rock mass associated with the example slope should be useful in defining the degree of confidence with which a very large engineering project may be realized in a very large rock mass, within the given constraints of budget, time, and environment. JF - Proceedings - Symposium on Rock Mechanics AU - Chiriotti, E AU - Mahtab, A AU - Xu, S AU - Kendorski, F A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 263 EP - 270 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - rock masses KW - shear strength KW - monitoring KW - site exploration KW - stress KW - statistical analysis KW - data processing KW - Europe KW - deformation KW - Orco River KW - Italy KW - Southern Europe KW - rock mechanics KW - Piemonte Italy KW - deep-seated structures KW - finite element analysis KW - discontinuities KW - slope stability KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52427735?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Methodology+for+characterizing+very+large+rock+masses%3B+an+illustrative+example&rft.au=Rochefort%2C+Regina+M%3BLittle%2C+Ronda+L%3BWoodward%2C+Andrea%3BPeterson%2C+David+L&rft.aulast=Rochefort&rft.aufirst=Regina&rft.date=1994-01-01&rft.volume=4&rft.issue=1&rft.spage=89&rft.isbn=&rft.btitle=&rft.title=The+Holocene&rft.issn=09596836&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 4 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - data processing; deep-seated structures; deformation; discontinuities; Europe; finite element analysis; Italy; monitoring; Orco River; Piemonte Italy; rock masses; rock mechanics; shear strength; site exploration; slope stability; Southern Europe; statistical analysis; stress ER - TY - JOUR T1 - Numerical model for estimating underground temperature distribution AN - 52427699; 1999-068655 AB - Engineering projects, such as deep tunnel and nuclear waste repository, may involve very deep overburden. As the depth at the project site increases, the underground temperature tends to elevate. This study aims to develop a reasonable methodology for estimating underground rock temperature under deep overburden. This paper proposes a methodology of modular analysis for estimating deep underground rock temperature. The proposed methodology involves the finite-element method and nonlinear optimization method. The proposed analysis assumes that the distribution of underground temperature is solely due to two-dimension thermal conduction. After verification, numerical experiments demonstrate that the distribution of underground temperature significantly depends on the thermal conductivity of underground rock. Parametric study illustrates that the anisotropy of thermal conductivity and the topography of ground surface also affect the distributions of temperature and thermal gradient. This study also discusses the sources of error for estimating the underground temperature. JF - Proceedings - Symposium on Rock Mechanics AU - Pan, Y W AU - Wu, P K A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 177 EP - 183 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - mining KW - overburden KW - numerical models KW - underground mining KW - engineering properties KW - loading KW - thermal properties KW - thermal regime KW - rock mechanics KW - mining geology KW - heat flow KW - lithostatic pressure KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52427699?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Numerical+model+for+estimating+underground+temperature+distribution&rft.au=Pan%2C+Y+W%3BWu%2C+P+K&rft.aulast=Pan&rft.aufirst=Y&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=177&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 5 N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - engineering properties; heat flow; lithostatic pressure; loading; mining; mining geology; numerical models; overburden; rock mechanics; thermal properties; thermal regime; underground mining ER - TY - JOUR T1 - Stability of high overhanging rock slope subject to rapid drawdown AN - 52427671; 1999-068641 AB - A criminal investigation required rapid drawdown of the water in an abandoned quarry. One wall of the quarry is 230 feet high, and the face overhangs with a dip of 65 degrees. This wall presented a potentially unstable condition during rapid drawdown. Failure of this wall would bury the crime scene and prevent retrieving evidence. Our objective was to maximize the drawdown rate without failing the quarry wall. This paper describes our evaluation of the wall stability, the maximum safe rate of drawdown, the instrumentation used to monitor the wall stability, and the procedures used and strategic changes made during drawdown. JF - Proceedings - Symposium on Rock Mechanics AU - McCaffrey, M A AU - Sacco, E G A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 71 EP - 77 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - United States KW - Norfolk County Massachusetts KW - forensic geology KW - mines KW - monitoring KW - Quincy Massachusetts KW - data acquisition KW - data processing KW - stability KW - excavations KW - rock mechanics KW - Massachusetts KW - Granite Rail Quarry KW - slope stability KW - abandoned mines KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52427671?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Stability+of+high+overhanging+rock+slope+subject+to+rapid+drawdown&rft.au=McCaffrey%2C+M+A%3BSacco%2C+E+G&rft.aulast=McCaffrey&rft.aufirst=M&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=71&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - abandoned mines; data acquisition; data processing; excavations; forensic geology; Granite Rail Quarry; Massachusetts; mines; monitoring; Norfolk County Massachusetts; Quincy Massachusetts; rock mechanics; slope stability; stability; United States ER - TY - JOUR T1 - Prediction of slope stability at the Las Encinas Mine AN - 52427301; 1999-068697 AB - The study site is the Las Encinas Mine, Mexico that is located in the state of Jalisco very close to the border of Colima and Michoacan states. To utilize the gravitational flow of blasted ore and caved waste rock, sublevel caving mining method will be adopted. Expected ore extraction is about 85% of ore deposit. One of the important characteristics of mine is that rock quality designation varies in the ore body. The stability of the opening in this mine must be well maintained, even though geology is relatively soft and highly fractured. For the stable mining operation, location of the stope and drifts is very critical. Also, it is very important to understand stress distributions around sublevel drifts and stope to maintain stability of mine opening and to determine mining sequence. The prime objective of this study is to develop a useful method for designing stopes and drifts in soft, weak, and highly fractured metallic ore deposits. JF - Proceedings - Symposium on Rock Mechanics AU - Jung, S J AU - Naranjo, P C AU - Cabrera, F AU - Lim, H U A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 509 EP - 516 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - rock masses KW - mining KW - underground mining KW - surface mining KW - Jalisco Mexico KW - stress KW - statistical analysis KW - prediction KW - mathematical models KW - displacements KW - finite element analysis KW - Mexico KW - mining geology KW - Las Encinas Mine KW - open-pit mining KW - slope stability KW - faults KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52427301?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Prediction+of+slope+stability+at+the+Las+Encinas+Mine&rft.au=Jung%2C+S+J%3BNaranjo%2C+P+C%3BCabrera%2C+F%3BLim%2C+H+U&rft.aulast=Jung&rft.aufirst=S&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=509&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 4 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - displacements; faults; finite element analysis; Jalisco Mexico; Las Encinas Mine; mathematical models; Mexico; mining; mining geology; open-pit mining; prediction; rock masses; slope stability; statistical analysis; stress; surface mining; underground mining ER - TY - JOUR T1 - Mechanical behavior of artificial anisotropic rock masses AN - 52427257; 1999-068678 AB - This paper presents results of a series of uniaxial and triaxial tests on specimens prepared from artificial anisotropic rock blocks created by high-pressure compaction of layers of different mixtures of cement, sand, microsilica and kaolinite. Artificial anisotropic rock specimens were cored with different dip angles from interlayered and stratified blocks. The Young's moduli of rock masses with different dip angle were simulated using the imperfectly bonded interface constitutive law developed by Tien et al. (1995). The simulation results based on the imperfect bonded models agreed well with the experimental results. JF - Proceedings - Symposium on Rock Mechanics AU - Tien, Y M AU - Wang, C Y AU - Juang, C H AU - Lee, D H A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 357 EP - 363 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - rock masses KW - compaction KW - pressure KW - mechanical properties KW - elastic constants KW - high pressure KW - triaxial tests KW - anisotropy KW - Young's modulus KW - uniaxial tests KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52427257?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Mechanical+behavior+of+artificial+anisotropic+rock+masses&rft.au=Tien%2C+Y+M%3BWang%2C+C+Y%3BJuang%2C+C+H%3BLee%2C+D+H&rft.aulast=Tien&rft.aufirst=Y&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=357&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 9 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - anisotropy; compaction; elastic constants; high pressure; mechanical properties; pressure; rock masses; rock mechanics; triaxial tests; uniaxial tests; Young's modulus ER - TY - JOUR T1 - Sand production and well productivity in conventional reservoirs AN - 52427215; 1999-068659 AB - The productivity of wells in sandstone reservoirs is affected by the permeability of the rock and its change with applied stress, and the geometry changes due to rock failure and sand production. Sand production experiments on thick wall cylinder sandstone specimens with radial fluid flow were performed in a variety of sandstones to correlate the productivity with the applied external stress, the deformation of the inner hole and the amount of produced sand. Theoretically, the productivity in the thick wall cylinder test and in an open hole well were analyzed by distinguishing between the pre-sand production phase, where permeability changes due to the applied stress dominate the productivity changes, and the post-sand production phase where geometry changes due to sand removal dominate. JF - Proceedings - Symposium on Rock Mechanics AU - Papamichos, E A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 209 EP - 216 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - petroleum engineering KW - stress KW - sand equivalent tests KW - sandstone KW - enhanced recovery KW - porosity KW - reservoir rocks KW - oil wells KW - sedimentary rocks KW - naturally fractured reservoirs KW - reservoir properties KW - drilling KW - clastic rocks KW - permeability KW - 30:Engineering geology KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52427215?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Sand+production+and+well+productivity+in+conventional+reservoirs&rft.au=Papamichos%2C+E&rft.aulast=Papamichos&rft.aufirst=E&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=209&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 5 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - clastic rocks; drilling; enhanced recovery; naturally fractured reservoirs; oil wells; permeability; petroleum engineering; porosity; reservoir properties; reservoir rocks; sand equivalent tests; sandstone; sedimentary rocks; stress ER - TY - JOUR T1 - A 3-D block-spring model for simulating the behavior of jointed rocks AN - 52427167; 1999-068650 AB - A three-dimensional Block-Spring Model has recently been developed for analyzing heavily jointed rocks. BSM simulates the discontinuous rock masses or large displacement by assembling blocks divided by joints and faults. The 2-D version of the BSM has been applied to many mining and rock mechanics cases and proved to be a useful tool for jointed rock analysis The paper presents the formulation and solving procedures of the 3-D modeling technique. A closed form solution and an illustrated example are presented to demonstrate the reliability and capability of the model. JF - Proceedings - Symposium on Rock Mechanics AU - Li, G AU - Vance, J A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 141 EP - 146 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - three-dimensional models KW - computer languages KW - data processing KW - joints KW - displacements KW - deformation KW - simulation KW - rock mechanics KW - fractures KW - style KW - Fortran KW - faults KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52427167?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=A+3-D+block-spring+model+for+simulating+the+behavior+of+jointed+rocks&rft.au=Li%2C+G%3BVance%2C+J&rft.aulast=Li&rft.aufirst=G&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=141&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 3 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - computer languages; data processing; deformation; displacements; faults; Fortran; fractures; joints; rock mechanics; simulation; style; three-dimensional models ER - TY - JOUR T1 - A localized probabilistic approach for slope analysis AN - 52427125; 1999-068642 AB - A localized probabilistic approach for slope stability analysis is presented in this paper, which is also applicable for the risk assessment of slope failure at a specified confidence level. The probabilistic analysis as well as its localization was achieved through the probabilistic characterization of the in-situ strength values, that provide the full statistical distribution of strength variables at every point within the geological formation. An actual case study was made for a surface coal mine to demonstrate its superiority and to show its technical details. JF - Proceedings - Symposium on Rock Mechanics AU - Young, D S AU - Pumjan, S A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 79 EP - 82 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - failures KW - bivariate analysis KW - strength KW - site exploration KW - statistical analysis KW - risk assessment KW - probability KW - slope stability KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52427125?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=A+localized+probabilistic+approach+for+slope+analysis&rft.au=Young%2C+D+S%3BPumjan%2C+S&rft.aulast=Young&rft.aufirst=D&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=79&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 8 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - bivariate analysis; failures; probability; risk assessment; rock mechanics; site exploration; slope stability; statistical analysis; strength ER - TY - JOUR T1 - Rock mechanics for siting radioactive waste repositories in hard rock AN - 52427087; 1999-068633 AB - The purpose of the work presented in this paper is to develop an integrated strategy for incorporating the rock mechanics and rock engineering aspects into site selection, repository design, construction, waste emplacement and closure for a radioactive waste disposal programme. The basic concept for deep geologic disposal and the role of bedrock in the design process are described in brief. In the overall disposal context, it is necessary to have a holistic approach and consider the complete system model of Geology (G), Thermal processes (T), Hydrogeology (H), Mechanical processes (M), Chemical processes (C) and Engineering activities (E). The strategy of incorporating rock mechanics data in five different stages of a waste disposal programme are presented. From a list of activities, existing gaps in the information and knowledge can be identified and research needs can be prioritised. JF - Proceedings - Symposium on Rock Mechanics AU - Stephansson, O A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 23 EP - 26 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - bedrock KW - site exploration KW - feasibility studies KW - rock mechanics KW - radioactive waste KW - deep-seated structures KW - models KW - deep drilling KW - risk assessment KW - drilling KW - waste disposal KW - underground disposal KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52427087?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Rock+mechanics+for+siting+radioactive+waste+repositories+in+hard+rock&rft.au=Stephansson%2C+O&rft.aulast=Stephansson&rft.aufirst=O&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=23&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 7 N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - bedrock; deep drilling; deep-seated structures; drilling; feasibility studies; models; radioactive waste; risk assessment; rock mechanics; site exploration; underground disposal; waste disposal ER - TY - JOUR T1 - Optimizing excavation support using block theory to reorient tunnel direction AN - 52426928; 1999-068702 AB - This paper proposes a procedure, involving block theory analysis, to minimize the support necessary to stabilize removable blocks around underground excavations. The limit equilibrium procedure involves contouring excess sliding forces on a stereo net for different excavation orientations. Data from a tunnel at Theodore Roosevelt Dam is used to demonstrate the procedure. Results indicate that stability of removable blocks is highly dependent on the excavation's orientation and the roughness of joints. Estimated support forces are conservatively based on the maximum key block. The advantage of this technique is that the geometry and vector equations are easy to solve allowing many cases to be examined. Its application is limited to blocky rock masses with continuous jointing in low stress conditions. The main finding from this work is that additional research is necessary for characterizing the roughness of joints. JF - Proceedings - Symposium on Rock Mechanics AU - Tinucci, J P AU - Funk, C W A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 551 EP - 557 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - United States KW - Theodore Roosevelt Dam KW - stress KW - stability KW - optimization KW - joints KW - mathematical models KW - excavations KW - fractures KW - style KW - tunnels KW - Arizona KW - underground installations KW - Apache Tunnel KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52426928?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Optimizing+excavation+support+using+block+theory+to+reorient+tunnel+direction&rft.au=Tinucci%2C+J+P%3BFunk%2C+C+W&rft.aulast=Tinucci&rft.aufirst=J&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=551&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 4 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Apache Tunnel; Arizona; excavations; fractures; joints; mathematical models; optimization; stability; stress; style; Theodore Roosevelt Dam; tunnels; underground installations; United States ER - TY - JOUR T1 - Investigation into the peak shear behaviour of rock joints using physical numerical modelling AN - 52426876; 1999-068688 AB - Based on the concept of average particle size index, which describes the distribution of particle grains according to their size, a numerical model using PFC (super 2D) has been formulated to quantify the impact of grain size on the roughness properties and the peak shear strength of rock joints. The paper shows a good agreement between numerical and physical tests of the peak shear strength of laboratory scale joints. JF - Proceedings - Symposium on Rock Mechanics AU - Kabeya, K K A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 439 EP - 446 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - fractures KW - shear strength KW - style KW - numerical models KW - joints KW - physical models KW - boundary conditions KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52426876?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Investigation+into+the+peak+shear+behaviour+of+rock+joints+using+physical+numerical+modelling&rft.au=Kabeya%2C+K+K&rft.aulast=Kabeya&rft.aufirst=K&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=439&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 5 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - boundary conditions; fractures; joints; numerical models; physical models; rock mechanics; shear strength; style ER - TY - JOUR T1 - Analysis of borehole instability due to grouting pressure AN - 52426845; 1999-068660 AB - A new borehole breakdown model with external in-situ stresses as well as internal grouting pressure is proposed in this study. For this, a bifurcation analysis together with a tensile fracturing model have been employed to simulate the crack propagation and eventual breakdown of the borehole. Numerical examples are also introduced to verify the proposed model on crack propagation and comparison with experimental data on shear and tensile cracking mode are made wherever possible. JF - Proceedings - Symposium on Rock Mechanics AU - Lee, Jun S AU - Bang, Choon-Suk AU - Choi, Il-Yoon A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 217 EP - 223 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - hydraulic fracturing KW - engineering geology KW - cracks KW - boreholes KW - numerical models KW - in situ KW - bearing capacity KW - mathematical models KW - grouting KW - tensile strength KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52426845?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Analysis+of+borehole+instability+due+to+grouting+pressure&rft.au=Lee%2C+Jun+S%3BBang%2C+Choon-Suk%3BChoi%2C+Il-Yoon&rft.aulast=Lee&rft.aufirst=Jun&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=217&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 16 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - bearing capacity; boreholes; cracks; engineering geology; grouting; hydraulic fracturing; in situ; mathematical models; numerical models; tensile strength ER - TY - JOUR T1 - Discrete element modelling of rock cutting AN - 52426808; 1999-068648 AB - The paper deals with a numerical analysis of rock cutting experiments using the discrete element method. The main objective of this research is to establish if the occurrence of the two failure modes observed in rock cutting experiments (ductile at small depth of cut, brittle at large depth) can be duplicated in numerical simulation. The numerical analysis is carried out with the discrete element code PFC (super 2D) which models solids as a collection of bonded disks. Scaling laws are first established between the micro-properties at the particle scale (such as the mean particle radius, and bond strengths) and the apparent material properties at the macroscopic scale (such as the compressive strength sigma (sub c) and the toughness K (sub Ic) ). Cutting tests are then performed with a particle assembly of rock-like properties. JF - Proceedings - Symposium on Rock Mechanics AU - Huang, Haiying AU - Detournay, Emmanuel AU - Bellier, Benoit A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 123 EP - 130 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - failures KW - elasticity KW - numerical models KW - discrete element methods KW - compressive strength KW - deformation KW - cuttings KW - excavations KW - rock mechanics KW - ductile deformation KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52426808?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Discrete+element+modelling+of+rock+cutting&rft.au=Huang%2C+Haiying%3BDetournay%2C+Emmanuel%3BBellier%2C+Benoit&rft.aulast=Huang&rft.aufirst=Haiying&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=123&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 11 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - compressive strength; cuttings; deformation; discrete element methods; ductile deformation; elasticity; excavations; failures; numerical models; rock mechanics ER - TY - JOUR T1 - Distribution of gas pressure in coal seam ahead of longwall face AN - 52426801; 1999-068696 AB - Gas pressure in coal seams is a major factor contributing to the gas emission and gas-coal bursting in underground coal mines. In this paper, the distribution pattern of gas pressure surrounding the mining area is studied. Particular considerations are given to the varying coal permeability resulting from the abutment pressure and to the dynamic feature of the flow-field structure associated with mining face advance. In a case study, numerical modeling using a finite element program was conducted to calculate the gas pressure in the coal seams with varying coal permeability and at different cycles of face advance. The results show that the modeled gas pressure agreed well with the field measurements. Smaller advance distance in a mining cycle would cause less change of gas pressure. JF - Proceedings - Symposium on Rock Mechanics AU - Zhou, D H AU - Yu, Chuxin A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 503 EP - 508 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - mining KW - Far East KW - geologic hazards KW - underground mining KW - southwestern China KW - mathematical models KW - coal seams KW - preventive measures KW - case studies KW - sedimentary rocks KW - longwall mining KW - rock bursts KW - pore pressure KW - mining geology KW - coal KW - Asia KW - permeability KW - China KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52426801?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Distribution+of+gas+pressure+in+coal+seam+ahead+of+longwall+face&rft.au=Zhou%2C+D+H%3BYu%2C+Chuxin&rft.aulast=Zhou&rft.aufirst=D&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=503&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 8 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Asia; case studies; China; coal; coal seams; Far East; geologic hazards; longwall mining; mathematical models; mining; mining geology; permeability; pore pressure; preventive measures; rock bursts; sedimentary rocks; southwestern China; underground mining ER - TY - JOUR T1 - Use of strain-gauged rock bolts to measure rock mass strain during drift development AN - 52426759; 1999-068695 AB - An experiment is described in which instrumented rock bolts were used to measure strain in the rock mass during drift development at the Stillwater Mine, Nye, Montana, USA. Two strain-gauged rock bolts were grouted into the middle of the rib next to the face. The drift was excavated in three advances, each one-half drift wide. Strains were recorded hourly by a datalogger. Results show that the average change in axial bolt strain for the first and second advance was about the same and that there was almost no change in strain after the third advance. Bending strain was observed 19 cm from the head of the bolt. JF - Proceedings - Symposium on Rock Mechanics AU - Johnson, J C AU - Brady, T AU - Larson, M AU - Langston, R AU - Kirsten, H A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 497 EP - 502 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - United States KW - rock masses KW - mining KW - underground mining KW - strain KW - stability KW - Stillwater Mine KW - Nye Montana KW - rock mechanics KW - Montana KW - mining geology KW - Stillwater County Montana KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52426759?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Use+of+strain-gauged+rock+bolts+to+measure+rock+mass+strain+during+drift+development&rft.au=Johnson%2C+J+C%3BBrady%2C+T%3BLarson%2C+M%3BLangston%2C+R%3BKirsten%2C+H&rft.aulast=Johnson&rft.aufirst=W&rft.date=1994-01-01&rft.volume=56&rft.issue=3&rft.spage=207&rft.isbn=&rft.btitle=&rft.title=Progressive+Fish-Culturist&rft.issn=00330779&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 1 N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - mining; mining geology; Montana; Nye Montana; rock masses; rock mechanics; stability; Stillwater County Montana; Stillwater Mine; strain; underground mining; United States ER - TY - JOUR T1 - Tunnels in Opalinus Clayshale; case histories and new developments AN - 52426752; 1999-068638 AB - Many tunnels were and are being built in the Swiss Jura Mountains. Consequently, much information is available on the performance of old tunnels, on modern experiments and analytical models used in the design of new tunnels, on new construction methods and on new project management methods. This paper summarizes this information and draws conclusions on what was learned between then and now. JF - Proceedings - Symposium on Rock Mechanics AU - Einstein, Herbert H A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 49 EP - 54 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - Jurassic KW - strength KW - mathematical models KW - Europe KW - Switzerland KW - Mesozoic KW - case studies KW - Swiss Jura Mountains KW - Opalinus Clay KW - creep KW - Central Europe KW - tunnels KW - Jura Mountains KW - construction KW - design KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52426752?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Tunnels+in+Opalinus+Clayshale%3B+case+histories+and+new+developments&rft.au=Einstein%2C+Herbert+H&rft.aulast=Einstein&rft.aufirst=Herbert&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=49&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 23 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - case studies; Central Europe; construction; creep; design; Europe; Jura Mountains; Jurassic; mathematical models; Mesozoic; Opalinus Clay; strength; Swiss Jura Mountains; Switzerland; tunnels ER - TY - JOUR T1 - Accurate estimation of rock joint roughness using variogram method AN - 52426727; 1999-068684 AB - Fractional Brownian profiles with known values of fractal dimension, D, input standard deviation, sigma , and data density, d, were generated. For different values of the input parameter of the variogram method (lag distance, h), D and another associated fractal parameter K (sub v) were calculated for the aforementioned profiles. The estimated K (sub v) was found to relate to D, sigma and d according to Kv = 2.0X10 (super -5) d (super 0.35) sigma (super 1.95) D (super 14.5) . The parameter K (sub v) can be used to capture the scale effect of roughness profiles. Suitable ranges for h were estimated to obtain computed D within + or -10% of the D used for the generation and also to satisfy a power functional relation between the variogram and h. Results indicated the importance of removal of global trend for roughness profiles with global trend to obtain accurate estimates for the fractal parameters. The parameters D and K (sub v) are suggested to use with the variogram method to quantify stationary roughness. In addition, at the basic level, the mean inclination/declination angle of the surface in the direction considered can be used to represent the global trend. Procedures are given in the paper to estimate suitable h range for a given natural rock joint profile to use with the variogram method to estimate D and K (sub v) accurately for the profile. JF - Proceedings - Symposium on Rock Mechanics AU - Kulatilake, P H S W AU - Um, J A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 407 EP - 414 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - fractures KW - variograms KW - style KW - strength KW - variance analysis KW - statistical analysis KW - joints KW - deformation KW - fractals KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52426727?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Accurate+estimation+of+rock+joint+roughness+using+variogram+method&rft.au=Kulatilake%2C+P+H+S+W%3BUm%2C+J&rft.aulast=Kulatilake&rft.aufirst=P+H+S&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=407&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 13 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - deformation; fractals; fractures; joints; rock mechanics; statistical analysis; strength; style; variance analysis; variograms ER - TY - JOUR T1 - Strength of coal pillars from back-calculation AN - 52426697; 1999-068635 AB - In the aftermath of a major collapse of coal pillars in a South African mine, research was initiated in 1963 to develop a reliable method of pillar design. To progress expeditiously, the research had been pursued in an empirical direction aiming to rationalize the accumulated experience of miners. Some 125 mining case histories, including 27 failed and 98 unfailed examples, had been accumulated. The critical safety factor of pillars was assumed to be a random variable, quantified by the lognormal distribution with its median at unity. Constants in a strength formula were derived from the data, using the tributary area pillar load, a simple three-parameter formula for pillar strength and the statistical method of the maximum likelihood. The results were published in 1966 and the design method based on them has been utilized almost exclusively in the intervening 32 years. Finally, some weaknesses and outstanding problems are discussed. JF - Proceedings - Symposium on Rock Mechanics AU - Salamon, M D G A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 29 EP - 36 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - mining KW - mines KW - Australasia KW - strength KW - roof control KW - coal mines KW - stability KW - New South Wales Australia KW - mathematical models KW - rock mechanics KW - sedimentary rocks KW - mining geology KW - coal KW - Southern Africa KW - Africa KW - Australia KW - applications KW - South Africa KW - Coalbrook North Colliery KW - pillars KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52426697?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Strength+of+coal+pillars+from+back-calculation&rft.au=Salamon%2C+M+D+G&rft.aulast=Salamon&rft.aufirst=M+D&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=29&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 12 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Africa; applications; Australasia; Australia; coal; coal mines; Coalbrook North Colliery; mathematical models; mines; mining; mining geology; New South Wales Australia; pillars; rock mechanics; roof control; sedimentary rocks; South Africa; Southern Africa; stability; strength ER - TY - JOUR T1 - Pressuremeter tests in poorly cemented weak rocks AN - 52426662; 1999-068664 AB - A series of pre-bored pressuremeter tests (PMT) were performed in relatively young, weak rock deposits at several test sites in Taiwan. Equipment used included the Menard type tri-cell pressuremeter and Cambridge high-pressure dilatometer. The test data were interpreted using some of the existing empirical and a newly developed analytical procedure. According to the interpretations of PMT data, the tested weak rock should behave as a highly overconsolidated cohesive material. This is contrary to some of the available laboratory experimental results. A 3-surface numerical scheme has been developed to simulate pressuremeter expansion in weak rock with unload-reload cycles. Preliminary results have indicated that the numerical scheme is capable of capturing the important features of pressuremeter expansion in a weak sandstone. JF - Proceedings - Symposium on Rock Mechanics AU - Huang, A B AU - Pan, I W AU - Liao, J J AU - Wang, C H AU - Hsieh, S Y Y1 - 1999 PY - 1999 DA - 1999 SP - 247 EP - 252 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - Taiwan KW - Far East KW - Quaternary KW - mudstone KW - shale KW - weak rocks KW - sandstone KW - Miocene KW - rock mechanics KW - cohesive materials KW - Cenozoic KW - Tertiary KW - pressuremeters KW - sedimentary rocks KW - pore pressure KW - Neogene KW - dilatometers KW - Pleistocene KW - western Taiwan KW - Asia KW - clastic rocks KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52426662?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Pressuremeter+tests+in+poorly+cemented+weak+rocks&rft.au=Huang%2C+A+B%3BPan%2C+I+W%3BLiao%2C+J+J%3BWang%2C+C+H%3BHsieh%2C+S+Y&rft.aulast=Huang&rft.aufirst=A&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=247&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 11 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2015-04-16 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Asia; Cenozoic; clastic rocks; cohesive materials; dilatometers; Far East; Miocene; mudstone; Neogene; Pleistocene; pore pressure; pressuremeters; Quaternary; rock mechanics; sandstone; sedimentary rocks; shale; Taiwan; Tertiary; weak rocks; western Taiwan ER - TY - JOUR T1 - The importance of coupled flow-mechanical analysis in modelling of shale undrained behaviour AN - 52426619; 1999-068662 AB - Due to the low permeability of shales, excess pore pressure will be induced in the material in response to volume change of the rock matrix during drilling. The excess pore pressure reduces the effective confining pressure applied to the material and leads to less stable wellbore conditions. The excess pore pressure response is also time-dependent, due to fluid flow associated with non-uniform pore pressure distribution in the material. The flow changes the effective stresses and induces further deformation of the wellbore. This paper describes two numerical models, one is a time-dependent model that incorporates coupled flow-mechanical interaction and another a steady state time-independent analysis that only accounts for mechanically induced pore pressure. Predictions from the two models are compared with the results of a borehole collapse test on thick-walled hollow cylinder of a soft shale. The investigation shows that there are large differences between predictions obtained from the two numerical models. The coupled numerical model is shown to be in reasonable agreement with the results of the laboratory tests. JF - Proceedings - Symposium on Rock Mechanics AU - Chen, X AU - Tan, C P AU - Haberfield, C M A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 233 EP - 238 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - engineering geology KW - sedimentary rocks KW - shale KW - pore pressure KW - stress KW - stability KW - prediction KW - fluid dynamics KW - clastic rocks KW - permeability KW - reservoir rocks KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52426619?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+International+Conference+on+Computer+Methods+and+Advances+in+Geomechanics&rft.atitle=Some+do%27s+and+don%27ts+for+slope+stability+analysis&rft.au=Chugh%2C+Ashok+K&rft.aulast=Chugh&rft.aufirst=Ashok&rft.date=1994-01-01&rft.volume=8%2C+Vol.+3&rft.issue=&rft.spage=2447&rft.isbn=9054103833&rft.btitle=&rft.title=Proceedings+of+the+International+Conference+on+Computer+Methods+and+Advances+in+Geomechanics&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 12 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - clastic rocks; engineering geology; fluid dynamics; permeability; pore pressure; prediction; reservoir rocks; sedimentary rocks; shale; stability; stress ER - TY - JOUR T1 - The development of engineering analysis for excavations in jointed rocks AN - 52426563; 1999-068636 AB - Initial attempts to include the effect of joints in analysis of unlined tunnel sections included first 2-d and then 3 d ubiquitous joint analysis applied to established stress formulas, e.g. the Kirsch solution and subsequently to the results of plane strain finite element analysis Subsequently, the finite element analysis was improved to handle joint elements and these were informed with opening/closing and shear non-linear constraints. Finally, we developed block theory which more naturally accommodates the three dimensional aspects of structural geological data. The original assignment to analyze the Pile Driver test drifts at the Nevada Test Site, based on joint trace mappings, would have been better served with the block theory approach. JF - Proceedings - Symposium on Rock Mechanics AU - Goodman, Richard E A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 37 EP - 44 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - United States KW - statistical analysis KW - joints KW - mapping KW - excavations KW - Pile Driver Site KW - rock mechanics KW - Nevada Test Site KW - fractures KW - finite element analysis KW - style KW - tunnels KW - shear KW - Nevada KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52426563?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=The+development+of+engineering+analysis+for+excavations+in+jointed+rocks&rft.au=Goodman%2C+Richard+E&rft.aulast=Goodman&rft.aufirst=Richard&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=37&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 6 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - excavations; finite element analysis; fractures; joints; mapping; Nevada; Nevada Test Site; Pile Driver Site; rock mechanics; shear; statistical analysis; style; tunnels; United States ER - TY - JOUR T1 - Long load transfer distances at the Deer Creek Mine AN - 52426159; 1999-068698 AB - Energy West Mining Company operates the Deer Creek coal mine located in the Wasatch Plateau about 40 km (25 miles) southwest of Price, Utah, USA. Longwall panels at depths in excess of 610 m (2000 ft) have been successfully retreated. Visual observations and stress measurements indicate that load transfer distances greater than 229 m (750 ft) have been experienced in the west side panels off the 3 (super rd) North mains. During retreat of longwall panels, ground conditions deteriorated significantly in the development section for the next longwall in the sequence located approximately 229 m (750 ft) away. Deteriorated ground conditions included a pillar burst, floor heave, rib spalling, and roof falls. Stress measurements suggest 13% excess load near this gateroad over the anticipated vertical stress. The long load transfer distances observed are believed to be primarily due to the massive and strong Castlegate Sandstone in the overburden strata. JF - Proceedings - Symposium on Rock Mechanics AU - Goodrich, R R AU - Agapito, J F T AU - Pollastro, C AU - LaFrentz, L AU - Fleck, K A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 517 EP - 523 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - United States KW - mining KW - mines KW - Castlegate Sandstone KW - underground mining KW - Cretaceous KW - loading KW - Wasatch Plateau KW - stress KW - coal mines KW - Upper Cretaceous KW - Mesozoic KW - rock mechanics KW - longwall mining KW - Deer Creek Mine KW - Price Utah KW - mining geology KW - Utah KW - Carbon County Utah KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52426159?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Long+load+transfer+distances+at+the+Deer+Creek+Mine&rft.au=Goodrich%2C+R+R%3BAgapito%2C+J+F+T%3BPollastro%2C+C%3BLaFrentz%2C+L%3BFleck%2C+K&rft.aulast=Goodrich&rft.aufirst=R&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=517&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 9 N1 - Document feature - illus. incl. 1 table, sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Carbon County Utah; Castlegate Sandstone; coal mines; Cretaceous; Deer Creek Mine; loading; longwall mining; Mesozoic; mines; mining; mining geology; Price Utah; rock mechanics; stress; underground mining; United States; Upper Cretaceous; Utah; Wasatch Plateau ER - TY - JOUR T1 - The evaluation of cemented rockfill spans at the Murray Mine AN - 52426113; 1999-068693 AB - This paper discusses the results of the analysis of drift spans under cemented rockfill in underhand cut-and-fill mining, and the implementation of the resulting recommendations to increase the spans. The increased spans have allowed substantial increases in mine productivity. JF - Proceedings - Symposium on Rock Mechanics AU - Brechtel, Carl E AU - Struble, Creg R AU - Guenther, Benjamin A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 481 EP - 487 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - United States KW - limestone KW - Hansen Creek Formation KW - backfill KW - mining KW - underground mining KW - strength KW - Paleozoic KW - Elko County Nevada KW - Independence Mountains KW - production KW - Silurian KW - sedimentary rocks KW - Murray Mine KW - mining geology KW - metal ores KW - Roberts Mountains Formation KW - gold ores KW - efficiency KW - carbonate rocks KW - slope stability KW - Middle Silurian KW - Nevada KW - 30:Engineering geology KW - 27A:Economic geology, geology of ore deposits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52426113?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=The+evaluation+of+cemented+rockfill+spans+at+the+Murray+Mine&rft.au=Brechtel%2C+Carl+E%3BStruble%2C+Creg+R%3BGuenther%2C+Benjamin&rft.aulast=Brechtel&rft.aufirst=Carl&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=481&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - backfill; carbonate rocks; efficiency; Elko County Nevada; gold ores; Hansen Creek Formation; Independence Mountains; limestone; metal ores; Middle Silurian; mining; mining geology; Murray Mine; Nevada; Paleozoic; production; Roberts Mountains Formation; sedimentary rocks; Silurian; slope stability; strength; underground mining; United States ER - TY - JOUR T1 - Determining stress-dependent permeability in the laboratory AN - 52426066; 1999-068676 AB - It is well-known that the formation permeability is not a constant but a function of the in-situ stress environment. This study has been primarily carried out numerically, and to a certain extent, in the field. However, since the rock properties are generally tested in the laboratory, this last situation needs to be modeled to maintain consistent scales in the analysis. In this paper, concepts and techniques of laboratory experiments are presented to determine relationships between: (a) fracture aperture and external loading in simulated rocks (concrete); and (b) flowrate and external loading in simulated fractured blocks (concrete). JF - Proceedings - Symposium on Rock Mechanics AU - Zhang, J AU - Bai, M AU - Roegiers, J C AU - Liu, T A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 341 EP - 347 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - experimental studies KW - biaxial tests KW - stress KW - mathematical models KW - rock mechanics KW - flows KW - pump tests KW - laboratory studies KW - fractures KW - sedimentary rocks KW - carbonate rocks KW - permeability KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52426066?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Determining+stress-dependent+permeability+in+the+laboratory&rft.au=Zhang%2C+J%3BBai%2C+M%3BRoegiers%2C+J+C%3BLiu%2C+T&rft.aulast=Zhang&rft.aufirst=J&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=341&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 6 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - biaxial tests; carbonate rocks; experimental studies; flows; fractures; laboratory studies; mathematical models; permeability; pump tests; rock mechanics; sedimentary rocks; stress ER - TY - JOUR T1 - Compressibility of coal and its impact on gas production from coalbed reservoirs AN - 52426011; 1999-068671 AB - With continued gas production from a coalbed methane reservoir, the reservoir pressure declines resulting in geometric and volumetric changes in the solid coal and pore space. This, in turn, affects the flow characteristics of coal and, hence, the overall production. This paper describes appropriate laboratory techniques to estimate different compressibilities of coal: bulk, matrix, pore volume and matrix shrinkage. The impact of compressibility on gas production is also evaluated. The results show that bulk and matrix shrinkage compressibilities are much larger compared to matrix, or grain, compressibility. The simulation results show that including pore volume compressibility results in a decline in production of about 15% over a five-year period. Including matrix shrinkage compressibility, on the other hand, increases the production over the same period by almost 50%. Furthermore, reduction in the overall bulk volume of coal as a result of matrix shrinkage compressibility effect may also be resulting in a significant decrease in the effective stress and thus increased permeability. JF - Proceedings - Symposium on Rock Mechanics AU - Harpalani, S A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 301 EP - 308 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - natural gas KW - petroleum KW - mathematical models KW - production KW - porosity KW - rock mechanics KW - physical properties KW - sedimentary rocks KW - pore pressure KW - coal KW - coalbed methane KW - permeability KW - compressibility KW - 30:Engineering geology KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52426011?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Compressibility+of+coal+and+its+impact+on+gas+production+from+coalbed+reservoirs&rft.au=Harpalani%2C+S&rft.aulast=Harpalani&rft.aufirst=S&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=301&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 21 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - coal; coalbed methane; compressibility; mathematical models; natural gas; permeability; petroleum; physical properties; pore pressure; porosity; production; rock mechanics; sedimentary rocks ER - TY - JOUR T1 - Utilization of mud weights in excess of the least principal stress in extreme drilling environments AN - 52425983; 1999-068665 AB - We address the theoretical possibility of drilling with mud weights in excess of the least principal stress for cases of particularly severe wellbore instability. Tensile fractures initiate at the wellbore wall at P (sub frac) , they link up to form large axial fractures sub-parallel to the wellbore axis at P (sub link) , and they propagate away from the wellbore at P (sub grow) . In general, our modeling shows that P (sub frac) and P (sub link) can be maximized by drilling the wellbore in an optimally stable orientation, and P (sub grow) can be maximized by using "non-invading" drilling muds, that is, those that prevent fluid pressure from reaching the fracture tip (i.e., if solids in the mud form bridges within the fracture). JF - Proceedings - Symposium on Rock Mechanics AU - Ito, T AU - Zoback, M D AU - Peska, P A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 253 EP - 259 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - hydraulic fracturing KW - drilling muds KW - boreholes KW - pore pressure KW - stability KW - mathematical models KW - tensile strength KW - drilling KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425983?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Utilization+of+mud+weights+in+excess+of+the+least+principal+stress+in+extreme+drilling+environments&rft.au=Ito%2C+T%3BZoback%2C+M+D%3BPeska%2C+P&rft.aulast=Ito&rft.aufirst=T&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=253&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 21 N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - boreholes; drilling; drilling muds; hydraulic fracturing; mathematical models; pore pressure; stability; tensile strength ER - TY - JOUR T1 - Wellbore stability analysis and guidelines for efficient shale instability management AN - 52425946; 1999-068657 AB - An efficient approach to the management of wellbore instability in shales is presented. It takes into consideration the factors which determine the degree of complexities required in developing mud weight program to provide the required effective mud support with time. A range of design and analysis tools required for wellbore stability analysis is described systematically. The application of some of the tools is demonstrated through two field case studies to develop strategies to control shale instability in wells drilled in the North West Shelf of Australia. The tools provide a practical means of optimising the approach in developing the solution, including drilling fluid design (weight, type and chemistry), to manage shale instability efficiently. JF - Proceedings - Symposium on Rock Mechanics AU - Pan, C P AU - Willoughby, D R AU - Choi, S K AU - Wu, B A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 195 EP - 202 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - petroleum engineering KW - Australasia KW - shale KW - fluid dynamics KW - rock mechanics KW - reservoir rocks KW - fuzzy logic KW - oil wells KW - fluid injection KW - sedimentary rocks KW - naturally fractured reservoirs KW - North West Shelf KW - Australia KW - drilling KW - clastic rocks KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425946?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Wellbore+stability+analysis+and+guidelines+for+efficient+shale+instability+management&rft.au=Pan%2C+C+P%3BWilloughby%2C+D+R%3BChoi%2C+S+K%3BWu%2C+B&rft.aulast=Pan&rft.aufirst=C&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=195&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 15 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Australasia; Australia; clastic rocks; drilling; fluid dynamics; fluid injection; fuzzy logic; naturally fractured reservoirs; North West Shelf; oil wells; petroleum engineering; reservoir rocks; rock mechanics; sedimentary rocks; shale ER - TY - JOUR T1 - The possible alleviation of feather-edging goaf falls; a case study validation AN - 52425942; 1999-068689 AB - When an immediate roof comprises competent ("massive") strata, caving is often delayed in total pillar extraction situations. The caving angle at the goaf edge, primarily depending on the roof type and depth of cover, is about 25 degree (or low) in a manner that a relative thin thickness (sometimes as low as "razor sharp" edge) of rock suddenly may over-ride the breaker-lines. This phenomenon, known as the feather-edging goaf-fall, is common in Australia (mostly in Western and Northern Coalfields), South Africa and USA. These goaf-falls are major source of injury & fatality accidents and are reasons for burial incidents of continuous miners. To alleviate such feather-edging, the alternatives may be by use of Mobile breaker lines, longwall chocks and fully grouted bolted breaker lines at goaf-edges. This paper finds the last alternative as viable and practicable. The results and analysis of data from "instrumented" bolts validate this proposition. JF - Proceedings - Symposium on Rock Mechanics AU - Shingh, S K AU - Hebblewhite, B K AU - Shepherd, J A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 449 EP - 453 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - mining KW - geologic hazards KW - Australasia KW - underground mining KW - roof control KW - stability KW - New South Wales Australia KW - Katoomba Coal KW - land subsidence KW - deformation KW - preventive measures KW - rock mechanics KW - Lithgow Coal KW - case studies KW - cracks KW - mining geology KW - Mount York Claystone KW - goafs KW - Australia KW - Blue Mountain Colliery KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425942?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=The+possible+alleviation+of+feather-edging+goaf+falls%3B+a+case+study+validation&rft.au=Shingh%2C+S+K%3BHebblewhite%2C+B+K%3BShepherd%2C+J&rft.aulast=Shingh&rft.aufirst=S&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=449&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 9 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Australasia; Australia; Blue Mountain Colliery; case studies; cracks; deformation; geologic hazards; goafs; Katoomba Coal; land subsidence; Lithgow Coal; mining; mining geology; Mount York Claystone; New South Wales Australia; preventive measures; rock mechanics; roof control; stability; underground mining ER - TY - JOUR T1 - Numerical models are the key to understanding the mechanics of jointed rocks AN - 52425927; 1999-068634 AB - There is much evidence that the mechanics of discontinuous media such as jointed rocks is neither tractable by conventional continuum methods, nor is readily amenable to intuitive analysis. Highlights from four case histories will illustrate the peculiar behavior of rock masses in both quasistatic and dynamic conditions. A brief summary is presented here. JF - Proceedings - Symposium on Rock Mechanics AU - Heuze, F E A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 27 EP - 28 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - United States KW - rock masses KW - Climax Mine KW - mining KW - underground mining KW - roof control KW - Riverside California KW - joints KW - rock mechanics KW - radioactive waste KW - Crestmore Mine KW - California KW - fractures KW - discontinuities KW - mining geology KW - shear tests KW - room-and-pillar mining KW - Nevada KW - mines KW - numerical models KW - stress KW - Riverside County California KW - case studies KW - waste disposal KW - underground disposal KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425927?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Numerical+models+are+the+key+to+understanding+the+mechanics+of+jointed+rocks&rft.au=Heuze%2C+F+E&rft.aulast=Heuze&rft.aufirst=F&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=27&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 7 N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - California; case studies; Climax Mine; Crestmore Mine; discontinuities; fractures; joints; mines; mining; mining geology; Nevada; numerical models; radioactive waste; Riverside California; Riverside County California; rock masses; rock mechanics; roof control; room-and-pillar mining; shear tests; stress; underground disposal; underground mining; United States; waste disposal ER - TY - JOUR T1 - The influence of applied rock engineering on underground hard rock mine design; impacts from 15 years of research and development AN - 52425896; 1999-068632 AB - The development of new, more advanced mining methods, particularly open stope mining, has led to significant increases in productivity in underground hard rock mines. Unfortunately this improved productivity was often accompanied by significant dilution. The development of larger capacity mobile underground equipment, which directly contributed to the development of higher productivity, higher tonnage, mining methods, requires larger underground access infrastructure. These and other factors necessitated that significant improvements be made in the area of basic ground control and rock engineering. This paper reviews some key rock engineering developments from the past 15 years and how these impact modern underground mine design. JF - Proceedings - Symposium on Rock Mechanics AU - Bawden, W F A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 13 EP - 22 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - mining KW - underground mining KW - strain KW - stress KW - effects KW - displacements KW - rock mechanics KW - mining geology KW - microseisms KW - review KW - faults KW - design KW - pillars KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425896?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=The+influence+of+applied+rock+engineering+on+underground+hard+rock+mine+design%3B+impacts+from+15+years+of+research+and+development&rft.au=Bawden%2C+W+F&rft.aulast=Bawden&rft.aufirst=W&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=13&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 29 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - design; displacements; effects; faults; microseisms; mining; mining geology; pillars; review; rock mechanics; strain; stress; underground mining ER - TY - JOUR T1 - Dynamic fracture behaviour of rock at high temperatures AN - 52425888; 1999-068674 AB - The dynamic fracture toughness of Fangshan gabbro and Fangshan marble specimens, which were fractured in a high-temperature state (100-330 degrees C), was measured by means of the Split Hopkinson Pressure Bar (SHPB) system. The rock specimens employed in this study were made according to the Short Rod (SR) specimen suggested by ISRM. The experimental results showed that under the dynamic loading condition the fracture toughness of both the gabbro and the marble increased with increasing loading rates. This relationship between fracture toughness and loading rates is fairly similar to that obtained in the normal room temperature environment. It can be concluded that temperature variation hardly affects the values of dynamic fracture toughness of the two rocks. This is completely different from the result obtained under the static loading condition. JF - Proceedings - Symposium on Rock Mechanics AU - Zhang, Z X AU - Kou, S Q AU - Lindqvist, P A AU - Yu, J AU - Jiang, L G A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 325 EP - 331 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - Far East KW - dynamic loading KW - loading KW - igneous rocks KW - thermal properties KW - mechanical properties KW - mathematical models KW - temperature KW - rock mechanics KW - fractures KW - Fangshan Gabbro KW - physical properties KW - plutonic rocks KW - Fangshan Marble KW - Hebei China KW - Beijing China KW - gabbros KW - Asia KW - high temperature KW - China KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425888?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Dynamic+fracture+behaviour+of+rock+at+high+temperatures&rft.au=Zhang%2C+Z+X%3BKou%2C+S+Q%3BLindqvist%2C+P+A%3BYu%2C+J%3BJiang%2C+L+G&rft.aulast=Zhang&rft.aufirst=Z&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=325&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 17 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Asia; Beijing China; China; dynamic loading; Fangshan Gabbro; Fangshan Marble; Far East; fractures; gabbros; Hebei China; high temperature; igneous rocks; loading; mathematical models; mechanical properties; physical properties; plutonic rocks; rock mechanics; temperature; thermal properties ER - TY - JOUR T1 - Triaxial residual strength of an anisotropic rock AN - 52425842; 1999-068673 AB - Peak strength and its failure criteria of anisotropic rocks have been studied and reported. However, few publications referred to residual strength behavior of anisotropic rocks. A laboratory testing technique, called the multiple failure state of triaxial test, was adopted to evaluate the residual strength behavior of anisotropic rocks in triaxial compression. A series of tests was performed on core samples of argillite. The experimental results show the fact that the triaxial residual strength is directly related to the inclination angle of specimen foliation with respect to the axial loading direction. The minimum triaxial residual strength occurs in the specimen with 30 degrees of inclination angle; and specimens with 0 degrees or 90 degrees inclination have maximum triaxial residual strength. Analyzing the experimental data by the basis of the Mohr-Coulomb failure criterion, the residual cohesive strength strongly depends on the inclination of foliation. Nevertheless, the residual friction angle is independent of the inclination of foliation. A new failure criterion of triaxial residual strength for anisotropic rocks, modified from the Hoek and Brown failure criterion, is proposed in this paper. The criterion correlates closely with the experimental data of argillite specimens and can be extended to estimate the triaxial residual strength for inherent anisotropic rocks with discontinuities. JF - Proceedings - Symposium on Rock Mechanics AU - Liao, J J AU - Hsieh, H Y A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 317 EP - 324 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - failures KW - discontinuities KW - strength KW - elastic properties KW - stress KW - deformation KW - triaxial tests KW - anisotropy KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425842?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Triaxial+residual+strength+of+an+anisotropic+rock&rft.au=Liao%2C+J+J%3BHsieh%2C+H+Y&rft.aulast=Liao&rft.aufirst=J&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=317&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 13 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - anisotropy; deformation; discontinuities; elastic properties; failures; rock mechanics; strength; stress; triaxial tests ER - TY - JOUR T1 - Application of the generalized wedge method to rock slope stability AN - 52425792; 1999-068639 AB - This paper discusses the applicability of the Generalized Wedge Method to the stability analysis of slopes commonly encountered in rock engineering. With the enhancements and additions implemented by the authors, the method can model important rock mass features such as weak seams, joints and faults with water seepage conditions, and multiple materials. Four practical examples are presented to demonstrate the effectiveness and robustness of the Generalized Wedge Method algorithm as a rock slope engineering analysis tool. JF - Proceedings - Symposium on Rock Mechanics AU - Zaki, A AU - Curran, J H A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 57 EP - 61 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - failures KW - pore pressure KW - Generalized Wedge Method KW - tension KW - slope stability KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425792?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Application+of+the+generalized+wedge+method+to+rock+slope+stability&rft.au=Zaki%2C+A%3BCurran%2C+J+H&rft.aulast=Zaki&rft.aufirst=A&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=57&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 6 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - failures; Generalized Wedge Method; pore pressure; rock mechanics; slope stability; tension ER - TY - JOUR T1 - Numerical limit analysis of fractured rock masses modelled as discontinua and Cosserat continua AN - 52425505; 1999-068704 AB - In the present work, numerical limit analyses techniques are used to determine the collapse load factor of rock masses, considered as discontinua and equivalent continua in the Cosserat sense. The Cosserat type equivalent continuum has, as its most relevant feature in the context of the present work, the possibility of incorporating toppling (rotational) modes of failure. The two implementations are described in the paper. Validation, illustrative and comparative examples are presented. JF - Proceedings - Symposium on Rock Mechanics AU - Durand, Aldo F AU - Vargas, Euripedes A, Jr AU - Vaz, Luiz E AU - Macias, Julio A A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 567 EP - 572 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - rock masses KW - fractured materials KW - numerical models KW - discontinuities KW - bearing capacity KW - loading KW - mathematical models KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425505?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Numerical+limit+analysis+of+fractured+rock+masses+modelled+as+discontinua+and+Cosserat+continua&rft.au=Durand%2C+Aldo+F%3BVargas%2C+Euripedes+A%2C+Jr%3BVaz%2C+Luiz+E%3BMacias%2C+Julio+A&rft.aulast=Durand&rft.aufirst=Aldo&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=567&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 13 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - bearing capacity; discontinuities; fractured materials; loading; mathematical models; numerical models; rock masses; rock mechanics ER - TY - JOUR T1 - Modeling the effect of geology on uplift in concrete gravity dam foundations with the discontinuous deformation analysis AN - 52425458; 1999-068699 AB - In this paper, the DDA method with a new hydro-mechanical algorithm is used to study the effect of rock discontinuities on uplift and seepage in concrete gravity dam foundations. This paper presents an alternative method of predicting uplift and seepage at the base of concrete gravity dams. A sensitivity analysis was carried out to study the importance of several parameters on dam stability such as the orientation, spacing, and location of discontinuities. The effectiveness of drains in reducing uplift and increasing dam stability is also investigated. The study shows that joint water flow and adverse geological conditions could result in unusual uplift at the base of concrete gravity dams, well in excess of what is predicted with the classical linear or bi-linear pressure assumption. Drains can be very effective in reducing that uplift if their location and diameter are chosen properly. It is shown that, in general, the DDA program with the hydro-mechanical algorithm can be used as a practical tool in the design of gravity dams built on fractured rock masses. JF - Proceedings - Symposium on Rock Mechanics AU - Kim, Y I AU - Amadei, Bernard AU - Pan, E A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 527 EP - 534 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - orientation KW - numerical analysis KW - uplifts KW - joints KW - discrete element methods KW - deformation KW - fractures KW - foundations KW - concrete dams KW - style KW - dams KW - discontinuous deformation analysis KW - gravity dams KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425458?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Modeling+the+effect+of+geology+on+uplift+in+concrete+gravity+dam+foundations+with+the+discontinuous+deformation+analysis&rft.au=Kim%2C+Y+I%3BAmadei%2C+Bernard%3BPan%2C+E&rft.aulast=Kim&rft.aufirst=Y&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=527&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 9 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - concrete dams; dams; deformation; discontinuous deformation analysis; discrete element methods; foundations; fractures; gravity dams; joints; numerical analysis; orientation; style; uplifts ER - TY - JOUR T1 - Sliding and toppling of rigid blocks under base friction AN - 52425428; 1999-068703 AB - To evaluate the validity of the time-scale equation that relates base-friction time to real time, tests were performed under gravity and under base friction in which a rectangular block was placed on an incline and let go. A new base friction testing procedure was used requiring the derivation of a numerical algorithm to convert base-friction time to gravity time. Results show that the base friction model correctly predicts the real behavior of the block. Furthermore, in all the cases presented, the time-scale equation applies at least approximately in pure rotation and pure sliding cases. Its validity in cases involving sliding and toppling simultaneously and in other more general cases is inconclusive due to insufficient data. JF - Proceedings - Symposium on Rock Mechanics AU - Yeung, M Ronald A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 559 EP - 566 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - rigidity KW - gravity sliding KW - stress KW - friction KW - mechanical properties KW - mathematical models KW - tectonics KW - physical models KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425428?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Sliding+and+toppling+of+rigid+blocks+under+base+friction&rft.au=Yeung%2C+M+Ronald&rft.aulast=Yeung&rft.aufirst=M&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=559&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 5 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - friction; gravity sliding; mathematical models; mechanical properties; physical models; rigidity; rock mechanics; stress; tectonics ER - TY - JOUR T1 - Experimental evaluation of Biot's poroelastic parameter; three different methods AN - 52425418; 1999-068677 AB - Biot's constant is used in many rock mechanics applications to evaluate different problems, therefore it is crucial to estimate it in the laboratory with reasonable experimental error. Three experimental methods are presented in this paper to evaluate the poroelastic factor of rock specimens. The first technique consists of determining matrix and bulk compressibilities using hydrostatic tests. The second technique involves hydrostatic and depletion tests performed on identical samples providing the poroelastic factor as a function of effective stress. The third technique involves constructing the failure envelope on samples with zero pore pressure and one triaxial test with pore pressure. The last two methods provide comparable results that do not require measurement of sample compressibilities. This paper discusses the detailed experimental procedures of proposed methods. Finally, these approaches are compared to the conventional method. JF - Proceedings - Symposium on Rock Mechanics AU - Franquet, J A AU - Abass, H H A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 349 EP - 355 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - elasticity KW - strength KW - sandstone KW - mathematical models KW - triaxial tests KW - porosity KW - rock mechanics KW - reservoir rocks KW - sedimentary rocks KW - pore pressure KW - clastic rocks KW - instruments KW - compressibility KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425418?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Experimental+evaluation+of+Biot%27s+poroelastic+parameter%3B+three+different+methods&rft.au=Franquet%2C+J+A%3BAbass%2C+H+H&rft.aulast=Franquet&rft.aufirst=J&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=349&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 10 N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - clastic rocks; compressibility; elasticity; instruments; mathematical models; pore pressure; porosity; reservoir rocks; rock mechanics; sandstone; sedimentary rocks; strength; triaxial tests ER - TY - JOUR T1 - Application of discontinuous deformation analysis to the modelling of rock blasting in mining AN - 52425383; 1999-068701 AB - This paper presents the development of a model, which describes the blasthole expansion due to gas pressurization. This model is coupled to a discontinuum model (Discontinuous Deformation Analysis (DDA)) introduced by Shi (1988) and used to simulate a single blasthole bench geometry. It is assumed in the model that the rock is already fragmented in-situ due to the intersection of pre-existing discontinuities and the action of stress wave. Hence, the model only considers the gas pressurization phase of the blasting process. The gases are assumed to expand adiabatically using an equation of state for the products of detonation. The gas loading components on each block are computed by minimizing the total potential energy induced to the block due to a uniform loading of block edges. JF - Proceedings - Symposium on Rock Mechanics AU - Mortazavi, A AU - Katsabanis, P D A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 543 EP - 550 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - rock masses KW - mining KW - strength KW - loading KW - stress KW - elastic waves KW - discrete element methods KW - fracturing KW - deformation KW - simulation KW - rock mechanics KW - discontinuities KW - blasting KW - pore pressure KW - mining geology KW - discontinuous deformation analysis KW - propagation KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425383?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Application+of+discontinuous+deformation+analysis+to+the+modelling+of+rock+blasting+in+mining&rft.au=Mortazavi%2C+A%3BKatsabanis%2C+P+D&rft.aulast=Mortazavi&rft.aufirst=A&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=543&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 9 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - blasting; deformation; discontinuities; discontinuous deformation analysis; discrete element methods; elastic waves; fracturing; loading; mining; mining geology; pore pressure; propagation; rock masses; rock mechanics; simulation; strength; stress ER - TY - JOUR T1 - Influence of rock mass stiffness variation on measured and simulated behavior AN - 52425382; 1999-068668 AB - Rock mass deformation is intimately controlled by the presence of discontinuities. The most obvious discontinuities are joints and fractures which can be observed in exposures and rock cores. Just as significant are discontinuities due to changes in stiffness resulting from lithology and fracture density. Discontinuities within the rock mass are typically taken into consideration using well established procedures for rock mass classification. By extending this procedure to classify individual strata rather than the overall rock mass, and using empirical correlations, it is possible to estimate a stiffness for each stratum. Measurements have verified modeled behavior of horizontally bedded sedimentary rock overlying high extraction coal mine panels. The locations and magnitudes of simulated displacements are consistent with those measured using time domain reflectometry (TDR). The importance of incorporating variations in rock stiffness and plastic sliding along "stiffness discontinuities" into numerical models has been confirmed by experience with TDR monitoring on many projects. JF - Proceedings - Symposium on Rock Mechanics AU - O'Connor, K M AU - Siekmeier, J A A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 277 EP - 284 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - rock masses KW - numerical models KW - stiffness KW - joints KW - displacements KW - deformation KW - simulation KW - rock mechanics KW - fractures KW - style KW - discontinuities KW - faults KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425382?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Influence+of+rock+mass+stiffness+variation+on+measured+and+simulated+behavior&rft.au=O%27Connor%2C+K+M%3BSiekmeier%2C+J+A&rft.aulast=O%27Connor&rft.aufirst=K&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=277&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 25 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - deformation; discontinuities; displacements; faults; fractures; joints; numerical models; rock masses; rock mechanics; simulation; stiffness; style ER - TY - JOUR T1 - Rock joints behavior under cyclic direct shear tests AN - 52425361; 1999-068683 AB - Cyclic direct shear tests were carried out on undulated artificial joints of mortar, according to constant normal stress (CNS) and constant normal stiffness (CNK) loading conditions. The morpho-mechanical behavior was analyzed in order to better understand the cyclic behavior of these joints. One parameter was defined to quantify the degradation of the sheared joints. Two models were then proposed to predict the degradation of the anisotropic joints according to the loading conditions (CNS or CNK) and the shearing mode (monotonous or cyclic). The degradation model for the CNK condition was generalized for both loading conditions and this model is in agreement with the undulated joints test results. JF - Proceedings - Symposium on Rock Mechanics AU - Homand-Etienne, F AU - Lefevre, F AU - Belem, T AU - Souley, M A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 399 EP - 406 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - rock masses KW - fractures KW - style KW - discontinuities KW - joints KW - shear tests KW - mechanical properties KW - excavations KW - anisotropy KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425361?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Rock+joints+behavior+under+cyclic+direct+shear+tests&rft.au=Homand-Etienne%2C+F%3BLefevre%2C+F%3BBelem%2C+T%3BSouley%2C+M&rft.aulast=Homand-Etienne&rft.aufirst=F&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=399&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 12 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - anisotropy; discontinuities; excavations; fractures; joints; mechanical properties; rock masses; rock mechanics; shear tests; style ER - TY - JOUR T1 - A chemo-mechanical model for borehole stability analyses AN - 52425347; 1999-068663 AB - This paper describes the development of a borehole stability model capable of considering certain chemo-mechanical processes that are operative in drilling fluid-shale interactions. Specifically, phenomena related to osmotic and poroelastic processes are included. A generalized plane strain solution is utilized which fully couples the chemical potential and deformation of shale. Drilling fluid parameters such as mud weight and salt concentration can be optimized to alleviate borehole instability when using oil-based or water-based muds. The user can choose the Drucker-Prager failure criterion or the Mohr-Coulomb criterion when conducting stability analyses. The model was used to investigate the impact of drilling fluid chemistry on the stability of an inclined wellbore in shale. The results demonstrate that osmosis significantly impacts fluid flux into the formation whereby stability can be achieved by increasing the salinity of the drilling mud. However, the contribution of osmosis to hole stability is overestimated by the ion exclusion model. Preliminary results of a boundary element model with ion transfer indicate that the diffusion of ions progressively decreases and eventually eliminates osmosis by reducing the chemical potential gradient between the mud and the formation. JF - Proceedings - Symposium on Rock Mechanics AU - Ghassemi, A AU - Wolfe, G AU - Diek, A AU - Roegiers, J C A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 239 EP - 246 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - osmosis KW - petroleum engineering KW - shale KW - stability KW - deformation KW - boundary element analysis KW - oil wells KW - fluid injection KW - sedimentary rocks KW - boreholes KW - geochemical methods KW - drilling KW - clastic rocks KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425347?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=A+chemo-mechanical+model+for+borehole+stability+analyses&rft.au=Ghassemi%2C+A%3BWolfe%2C+G%3BDiek%2C+A%3BRoegiers%2C+J+C&rft.aulast=Ghassemi&rft.aufirst=A&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=239&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 30 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - boreholes; boundary element analysis; clastic rocks; deformation; drilling; fluid injection; geochemical methods; oil wells; osmosis; petroleum engineering; sedimentary rocks; shale; stability ER - TY - JOUR T1 - 37th U. S. rock mechanics symposium AN - 52425310; 1999-068630 JF - Proceedings - Symposium on Rock Mechanics A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 574 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - mining KW - symposia KW - drilling KW - waste disposal KW - slope stability KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425310?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=37th+U.+S.+rock+mechanics+symposium&rft.au=&rft.aulast=&rft.aufirst=&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Document feature - illus. N1 - SuppNotes - Individual papers are cited separately; Vol. 1 of two volumes N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - drilling; mining; rock mechanics; slope stability; symposia; waste disposal ER - TY - JOUR T1 - High temperature triaxial tests with ultrasonic measurements on Ekofisk Chalk AN - 52425304; 1999-068680 AB - Triaxial tests have been performed on chalk from the Ekofisk field of the North Sea on four specimens at temperatures up to 120 degrees C. The test programme was designed to match as closely as possible the in-situ conditions and consisted of four series of P&S-wave velocity measurements. Series A was isotropic loading of the dry specimen at room temperature. Series B was isotropic loading of the dry specimen at a temperature of 120 degrees C. Series C was isotropic loading of the specimen saturated with decane at room temperature. Series D, simulating the in-situ stress path, imposed uniaxial strain compression (K (sub 0) -conditions) on the specimen, saturated with brine at a temperature of 120 degrees C while pore pressure was reduced from 48.3 to 20.7 MPa (7000 to 3000 psi), and followed by displacement of mobile water by decane. The results showed that P&S wave velocities depend on temperature, effective stress level, initial porosity and saturation fluid. A new computer program for logging and analysing acoustic signals developed at NGI is described. JF - Proceedings - Symposium on Rock Mechanics AU - Chryssanthakis, P AU - Westerdahl, H AU - Rose, E AU - Rhett, D AU - Pederson, S A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 373 EP - 379 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - P-waves KW - body waves KW - pressure KW - Ekofisk Field KW - elastic waves KW - high pressure KW - ultrasonic methods KW - triaxial tests KW - porosity KW - temperature KW - rock mechanics KW - measurement KW - chalk KW - sedimentary rocks KW - isotropy KW - seismic waves KW - North Sea KW - North Atlantic KW - carbonate rocks KW - S-waves KW - high temperature KW - Atlantic Ocean KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425304?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Sediment+transport+analysis%3B+Rio+Grande+floodway+at+San+Marcial+gauge&rft.au=Samad%2C+Mohammed+A&rft.aulast=Samad&rft.aufirst=Mohammed&rft.date=1994-01-01&rft.volume=1994&rft.issue=&rft.spage=1115&rft.isbn=0784400377&rft.btitle=&rft.title=Hydraulic+Engineering%3A+Proceedings+of+the+National+Conference+on+Hydraulic+Engineering&rft.issn=10701559&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 2 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Atlantic Ocean; body waves; carbonate rocks; chalk; Ekofisk Field; elastic waves; high pressure; high temperature; isotropy; measurement; North Atlantic; North Sea; P-waves; porosity; pressure; rock mechanics; S-waves; sedimentary rocks; seismic waves; temperature; triaxial tests; ultrasonic methods ER - TY - JOUR T1 - Description of a large catastrophic failure in a southwestern Wyoming trona mine AN - 52425246; 1999-068670 AB - A large-scale collapse occurred in a room-and-pillar trona mine in southwestern Wyoming on February 3, 1995. An area measuring approximately 1 by 2 km (2800 by 7200 ft) collapsed abruptly without warning. This paper describes the resulting mine damage, airblast, gas emissions, and seismic event. The collapse is analyzed in terms of a cascading sequence of pillar-floor failure using established principles of failure stability. The dynamic nature of the failure is thought to stem from geological and mine geometry factors resulting in a "soft" pillar-loading system. While the specific mechanism initiating the collapse has not been identified conclusively, four candidate mechanisms are considered. Design methods to decrease the potential for large-scale collapse are summarized, and limitations in our ability to evaluate both the stability of old workings and long-term performance of new designs in this setting are described. JF - Proceedings - Symposium on Rock Mechanics AU - Zipf, R K, Jr AU - Swanson, P A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 293 EP - 298 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - mining KW - failures KW - Green River Wyoming KW - geophysical surveys KW - geologic hazards KW - collapse structures KW - underground mining KW - geophysical methods KW - southwestern Wyoming KW - Solvay Mine KW - seismic methods KW - rock mechanics KW - mining geology KW - surveys KW - carbonates KW - trona KW - design KW - catastrophes KW - 30:Engineering geology KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425246?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Description+of+a+large+catastrophic+failure+in+a+southwestern+Wyoming+trona+mine&rft.au=Milhous%2C+Robert+T%3BDodge%2C+Russell+A%3BJohnson%2C+Perry+L&rft.aulast=Milhous&rft.aufirst=Robert&rft.date=1994-01-01&rft.volume=1994&rft.issue=&rft.spage=1055&rft.isbn=0784400377&rft.btitle=&rft.title=Hydraulic+Engineering%3A+Proceedings+of+the+National+Conference+on+Hydraulic+Engineering&rft.issn=10701559&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 5 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - carbonates; catastrophes; collapse structures; design; failures; geologic hazards; geophysical methods; geophysical surveys; Green River Wyoming; mining; mining geology; rock mechanics; seismic methods; Solvay Mine; southwestern Wyoming; surveys; trona; underground mining ER - TY - JOUR T1 - Slope stability analysis using discontinuous deformation analysis method AN - 52425213; 1999-068700 AB - In this paper, we present the approaches of applying Discontinuous Deformation Analysis (DDA), a powerful numerical method, to practical problems related to slope stability analysis in three aspects: 1) calculation of factor of safety, 2) simulation of failure process and 3) rock fall analysis. The theory and the mechanism of modeling rock failure in DDA is briefly introduced. The factor of safety is directly defined based on the failure mechanism and is easily to be obtained in DDA calculation. Two practical applications have been presented to show how to use the method in practice. One application is the simulation of a slope rock mass collapse happened in Hokkaido, Japan. The other is rock fall simulation of a slope located in Niigata, Japan. It has been shown from two practical applications that DDA is a very effective numerical method for slope stability analysis. JF - Proceedings - Symposium on Rock Mechanics AU - Chen, Guangqi AU - Ohnishi, Yuzo A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 535 EP - 541 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - rockfalls KW - failures KW - Far East KW - strain KW - numerical analysis KW - stress KW - discrete element methods KW - deformation KW - simulation KW - rock mechanics KW - Niigata Japan KW - mass movements KW - discontinuous deformation analysis KW - Honshu KW - Asia KW - slope stability KW - Japan KW - Hokkaido KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425213?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Slope+stability+analysis+using+discontinuous+deformation+analysis+method&rft.au=Chen%2C+Guangqi%3BOhnishi%2C+Yuzo&rft.aulast=Chen&rft.aufirst=Guangqi&rft.date=1999-01-01&rft.volume=14&rft.issue=2&rft.spage=142&rft.isbn=&rft.btitle=&rft.title=Ground+Water+Monitoring+%26+Remediation&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 4 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Asia; deformation; discontinuous deformation analysis; discrete element methods; failures; Far East; Hokkaido; Honshu; Japan; mass movements; Niigata Japan; numerical analysis; rock mechanics; rockfalls; simulation; slope stability; strain; stress ER - TY - JOUR T1 - Fuzzy control; an alternate mean of sand exclusion in wells? AN - 52425197; 1999-068658 AB - In contrast to classical logic systems, fuzzy logic is a technique of reasoning by "cheap" approximations, significance and human-like terminologies rather than by the "expensive" exactness and precision. The technique is based on the fuzzy set theory and is considered a handy tool for quantifying vagueness. This paper combines the fact that sanding can sometimes benefit the well-reservoir system with the need to keep its intrusion into the wellbore at a tolerable level to create a fuzzy sanding controller. The system monitors the sanding level and its rate of change; and adjusts the choke valve accordingly. Fuzzy logic resulted in a smooth/continuous solution no matter how the input varied within the universe of discourse (domain) and/or crossed boundaries between (fuzzy) sets. Thus, the technique allowed the machinery to operate in small refinements, avoided creating any abrupt changes to the drawdown, and secured the stability of the system. JF - Proceedings - Symposium on Rock Mechanics AU - Kanj, Mazen AU - Roegiers, Jean-Claude A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 203 EP - 208 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - sand KW - petroleum engineering KW - clastic sediments KW - sand equivalent tests KW - enhanced recovery KW - reservoir rocks KW - fuzzy logic KW - oil wells KW - sediments KW - reservoir properties KW - drilling KW - permeability KW - 30:Engineering geology KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425197?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Fuzzy+control%3B+an+alternate+mean+of+sand+exclusion+in+wells%3F&rft.au=Kanj%2C+Mazen%3BRoegiers%2C+Jean-Claude&rft.aulast=Bredehoeft&rft.aufirst=J&rft.date=1994-01-01&rft.volume=14&rft.issue=1&rft.spage=95&rft.isbn=&rft.btitle=&rft.title=Ground+Water+Monitoring+%26+Remediation&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 5 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - clastic sediments; drilling; enhanced recovery; fuzzy logic; oil wells; permeability; petroleum engineering; reservoir properties; reservoir rocks; sand; sand equivalent tests; sediments ER - TY - JOUR T1 - Subsidence experience at Twentymile Coal Company AN - 52425178; 1999-068690 AB - Twentymile Coal Company used the National Coal Board model for predicting maximum subsidence and angle of draw resulting from its longwall mining. Predictions were verified by installation of a monitoring network over selected longwall panels. These data are used in subsidence planning for the railroad entering the mine. JF - Proceedings - Symposium on Rock Mechanics AU - Mills, R AU - Archibeque, S AU - Dowling, G AU - Breeds, C D A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 455 EP - 463 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - United States KW - mining KW - geologic hazards KW - underground mining KW - strain KW - Twentymile Coal Company KW - prediction KW - land subsidence KW - displacements KW - Steamboat Springs KW - longwall mining KW - Twentymile Sandstone KW - mining geology KW - Colorado KW - faults KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425178?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Subsidence+experience+at+Twentymile+Coal+Company&rft.au=Mills%2C+R%3BArchibeque%2C+S%3BDowling%2C+G%3BBreeds%2C+C+D&rft.aulast=Mills&rft.aufirst=R&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=3245&rft.isbn=&rft.btitle=&rft.title=Geochimica+et+Cosmochimica+Acta&rft.issn=00167037&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 11 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Colorado; displacements; faults; geologic hazards; land subsidence; longwall mining; mining; mining geology; prediction; Steamboat Springs; strain; Twentymile Coal Company; Twentymile Sandstone; underground mining; United States ER - TY - JOUR T1 - Effect of pore fluid conditions at the borehole wall on borehole stability AN - 52425150; 1999-068656 AB - In existing poroelastic borehole models, the pore fluid conditions at the borehole wall are simply assumed as: a constant pore pressure for penetrating models, or no flux across the wall for impermeable models. In reality, the pore fluid boundary conditions at the walls may be much more complicated. This paper presents the newly-developed poroelastic solution for inclined boreholes with time-dependent pore pressure or the pore fluid flow at the wall. The effects of the pore fluid boundary conditions on the borehole stability are also analyzed. JF - Proceedings - Symposium on Rock Mechanics AU - Cui, L AU - Ekbote, S AU - Abousleiman, Y A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 187 EP - 194 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - soil mechanics KW - pore pressure KW - elastic properties KW - stress KW - isotropy KW - stability KW - mathematical models KW - pore water KW - boundary conditions KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425150?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Effect+of+pore+fluid+conditions+at+the+borehole+wall+on+borehole+stability&rft.au=Cui%2C+L%3BEkbote%2C+S%3BAbousleiman%2C+Y&rft.aulast=Cui&rft.aufirst=L&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=187&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - boundary conditions; elastic properties; isotropy; mathematical models; pore pressure; pore water; rock mechanics; soil mechanics; stability; stress ER - TY - JOUR T1 - Effects of chemical potential mechanism on CU triaxial and borehole collapse tests on shales AN - 52425105; 1999-068661 AB - This paper demonstrates the effects of chemical potential mechanism on strength and deformation properties of, and wellbore stability in Pierre II shale through consolidated undrained triaxial and borehole collapse tests. Some of the shale samples for triaxial tests were treated with filtrates of two water-based muds with different KCl concentrations at elevated pressure and temperature. The triaxial tests were performed undrained at a range of effective confining pressures. A series of borehole collapse tests was conducted on thick-walled cylinders of the same shale material. Mud filtrate was circulated along the borehole wall at a zero average overbalance pressure in some of the tests before the borehole pressure was reduced to induce borehole failure, while the cell pressure was maintained constant. Comparison of the triaxial test results on treated and untreated samples showed that the treated samples have higher modulus and peak strength but lower Poisson's ratio and Skempton's pore pressure parameters A and B than those untreated samples. The extent of the effects, attributable to chemical potential mechanism, was different for the two water-based muds. The thick-walled cylinder test results showed that the mechanism resulted in a significant increase in wellbore stability due to a combination of increase in effective mud support and material strength. JF - Proceedings - Symposium on Rock Mechanics AU - Tan, C P AU - Wu, B A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 225 EP - 232 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - shale KW - Pierre II Shale KW - deformation KW - triaxial tests KW - porosity KW - rock mechanics KW - physical properties KW - sedimentary rocks KW - boreholes KW - pore pressure KW - clastic rocks KW - permeability KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425105?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Effects+of+chemical+potential+mechanism+on+CU+triaxial+and+borehole+collapse+tests+on+shales&rft.au=Tan%2C+C+P%3BWu%2C+B&rft.aulast=Tan&rft.aufirst=C&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=225&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 15 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - boreholes; clastic rocks; deformation; permeability; physical properties; Pierre II Shale; pore pressure; porosity; rock mechanics; sedimentary rocks; shale; triaxial tests ER - TY - JOUR T1 - Controlled-foam injection for hard rock excavation AN - 52425065; 1999-068647 AB - A new non-explosive method to excavate hard rock and concrete has been developed, tested and demonstrated in a mining environment. The method uses high-pressure foam to initiate, pressurize and propagate controlled fracturing in rock. The foam is injected to the bottom of a relatively shallow pre-drilled hole in the rock or concrete to be broken by means of a barrel incorporating a hole bottom sealing method. The high viscosity of the foam (as compared to a gas) combined with its stored energy characteristics (as compared to a liquid) result in consistent and controlled breakage. The pressures required to fracture and excavate rock are significantly less than required in methods based upon the use of small explosive or propellant charges. Airblast and flyrock are reduced to very benign levels, allowing the method to be applied in a continuous manner and to be used in urban and other sensitive environments. JF - Proceedings - Symposium on Rock Mechanics AU - Young, Chapman A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 115 EP - 121 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - pressure KW - strength KW - loading KW - fracturing KW - high pressure KW - excavations KW - rock mechanics KW - field studies KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52425065?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Controlled-foam+injection+for+hard+rock+excavation&rft.au=Young%2C+Chapman&rft.aulast=Young&rft.aufirst=Chapman&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=115&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 13 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - excavations; field studies; fracturing; high pressure; loading; pressure; rock mechanics; strength ER - TY - JOUR T1 - Rapid excavation and mining (REAM) system; revisited AN - 52424997; 1999-068644 AB - The rapid excavation and mining (REAM) system utilizes large and medium caliber smoothbore cannon to launch inert kinetic energy projectiles to spall rock fascias for mining and excavation applications. Historically, field tests had been conducted against various obstacles and two test bores 3.5 m in diameter were excavated into granite, one of which was taken to a test depth of 17 m. A cost analysis had been performed using the experimental data collected from the program in the 1970s. Advance rates that were limited only by the estimated ability to remove muck were assumed in this analysis. These assumptions lead to boring rates that were not only more than three times faster than conventional drill and blast techniques but also considerably cheaper. The economic analysis has been recomputed with the aid of empirical cost functions from the US Bureau of Mines. It has been found that under certain circumstances the REAM technique uses less propellant per kilogram of ore produced than conventional drill and blast methods. Also, if cost is not an issue then the REAM technique can provide advance rates unobtainable by conventional methods. JF - Proceedings - Symposium on Rock Mechanics AU - Conroy, Paul J AU - Heimerl, Joseph M AU - Fisher, Edward A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 93 EP - 100 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - mines KW - technology KW - REAM system KW - numerical models KW - igneous rocks KW - rapid excavation and mining system KW - granites KW - deformation KW - excavations KW - cost KW - history KW - plutonic rocks KW - blasting KW - drilling KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52424997?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Rapid+excavation+and+mining+%28REAM%29+system%3B+revisited&rft.au=Conroy%2C+Paul+J%3BHeimerl%2C+Joseph+M%3BFisher%2C+Edward&rft.aulast=Conroy&rft.aufirst=Paul&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=93&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 14 N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - blasting; cost; deformation; drilling; excavations; granites; history; igneous rocks; mines; numerical models; plutonic rocks; rapid excavation and mining system; REAM system; technology ER - TY - JOUR T1 - Dynamic rock slope stability analysis at Masada National Monument using block theory and DDA AN - 52424971; 1999-068640 AB - The Masada mountain is located on the western margins of the seismically active Dead Sea rift system. Therefore, dynamic key block stability is of primary concern in the densely fractured East and North rock slopes of the mountain. Recent seismogenic key block motions in the East face, detected by our in-situ monitoring system, are explained by the presently low factor of safety against sliding, and by a pronounced topographic site effect at Masada with peak spectral amplification of about 3.5. Two analysis methods are employed: 1) Static and pseudo-static limit equilibrium analysis of removable key blocks in the East face where failure of large individual key blocks is of primary concern; 2) Static and true dynamic DDA modelling of a stochastically generated block mesh in the North face where the collapse of complete slope segments under dynamic loading is of concern. The deterministic analysis of removable key blocks in the East face reveals that when joint water pressures are considered application of a 2D solution proves unconservative. DDA modelling reveals the expected failure modes in the North face and the maximum depth of deformation as a result of dynamic loading. JF - Proceedings - Symposium on Rock Mechanics AU - Hatzor, Y H A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 63 EP - 70 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - failures KW - dynamic loading KW - loading KW - Dead Sea Rift KW - Israel KW - fractures KW - seismicity KW - Mount Masada KW - ground motion KW - Masada National Monument KW - Asia KW - slope stability KW - earthquakes KW - Middle East KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52424971?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Dynamic+rock+slope+stability+analysis+at+Masada+National+Monument+using+block+theory+and+DDA&rft.au=Hatzor%2C+Y+H&rft.aulast=Hatzor&rft.aufirst=Y&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=63&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 13 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Asia; Dead Sea Rift; dynamic loading; earthquakes; failures; fractures; ground motion; Israel; loading; Masada National Monument; Middle East; Mount Masada; seismicity; slope stability ER - TY - JOUR T1 - Static and dynamic loads in ore and waste rock passes in underground mines AN - 52424950; 1999-068694 AB - This paper describes research to improve safety during transport of ore and waste in underground mines. Field tests are underway in mines in Idaho and Montana. Strains measured on structural support members in an ore pass provided information about total forces acting on the structure as material was dumped into it. Results show that measured static loads were considerably less than actual total weight of the material dumped and that dynamic loads were subject to many factors, such as effects of blasting to remove hang-ups. Comparisons of measurements and computer results using a particle flow code indicated that several difficulties remain before achieving realistic determinations and models of the dynamic effects of particle flow in ore passes and impact loads on the gates. Impact loads were overestimated in computer analyses as compared to loads measured in field tests. An alternative design approach based on softening the chute and control gate assembly is being proposed. JF - Proceedings - Symposium on Rock Mechanics AU - Beus, M AU - Iverson, S R AU - Dreschler, A AU - Scott, V A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 489 EP - 495 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - United States KW - mining KW - Idaho KW - geologic hazards KW - dynamic loading KW - underground mining KW - loading KW - data processing KW - Montana KW - safety KW - spoils KW - mining geology KW - waste disposal KW - design KW - field studies KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52424950?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Static+and+dynamic+loads+in+ore+and+waste+rock+passes+in+underground+mines&rft.au=Beus%2C+M%3BIverson%2C+S+R%3BDreschler%2C+A%3BScott%2C+V&rft.aulast=Beus&rft.aufirst=M&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=489&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 11 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - data processing; design; dynamic loading; field studies; geologic hazards; Idaho; loading; mining; mining geology; Montana; safety; spoils; underground mining; United States; waste disposal ER - TY - JOUR T1 - Stress analyses of a simple fault asperity AN - 52424926; 1999-068682 AB - A geometrically simple fault asperity (protrusion) is envisioned as a brick protruding from a wall. The asperity can interlock with the opposite fault face along the shoulder protruding from the wall, or can make frictional contact (perhaps smaller scale interlocking) all along the face of the brick. A finite difference approximation to the biharmonic equation is used for a two-dimensional analyses of asperity stresses resulting from interlocking and confining forces. Approximations of Coulomb's equation are used to estimate shear strength vs confining stress. Applying force all along the brick face is a less efficient method of stressing the brick at probable sites of rupture initiation than is interlocking the brick at the protrusion shoulder. Failure initiation of the asperity by shear stress seems likely to occur most often. Under some circumstances, considering the uncertainties of shear and tensile strength at depth, failure initiation by tensile stresses may be possible. JF - Proceedings - Symposium on Rock Mechanics AU - Reiter, Marshall A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 391 EP - 397 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - failures KW - shear strength KW - rupture KW - asperities KW - stress KW - tensile strength KW - compression KW - faults KW - two-dimensional models KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52424926?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Stress+analyses+of+a+simple+fault+asperity&rft.au=Reiter%2C+Marshall&rft.aulast=Reiter&rft.aufirst=Marshall&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=391&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 28 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - asperities; compression; failures; faults; rock mechanics; rupture; shear strength; stress; tensile strength; two-dimensional models ER - TY - JOUR T1 - Technical auditing of rock mechanics modeling and rock engineering design AN - 52424925; 1999-068631 AB - In order to be able to implement a procedure for checking the adequacy of rock mechanics modeling and rock engineering design, the technical auditing approach has been developed. This is a procedure for formally examining modeling and design to ensure that they have captured the essence of the problem in hand. The main subject areas in rock mechanics are reviewed and the modeling problems highlighted. A range of engineering projects is listed to illustrate the wide variety of engineering objectives and associated issues. The principles of technical auditing are presented and a case example included to illustrate the required supporting information and documentation. Technical auditing can be used "before the event" to guide the modeling and design or "after the event" to check that a model or a design has indeed addressed the technical objectives and included those variables, mechanisms and parameters required to represent the rock reality. The audit trail provides transparency and traceability for modeling and design. JF - Proceedings - Symposium on Rock Mechanics AU - Hudson, J A A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 3 EP - 12 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - models KW - principles KW - concepts KW - design KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52424925?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Technical+auditing+of+rock+mechanics+modeling+and+rock+engineering+design&rft.au=Hudson%2C+J+A&rft.aulast=Hudson&rft.aufirst=J&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=3&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 11 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - concepts; design; models; principles; rock mechanics ER - TY - JOUR T1 - Analysis of post-peak pillar behaviour using the enhanced displacement discontinuity method AN - 52424885; 1999-068654 AB - In the mining of lenticular orebodies, the ability to model the post-peak behaviour of pillars is of critical importance since local pillar collapse can lead to catastrophic failure on a mine-wide scale. This paper models the response of yielding pillars is using the progressive failure approach coupled with the enhanced displacement discontinuity method (EDDM). The EDDM, unlike the DDM, explicitly considers the effect of confinement. The progressive failure procedure is an iterative technique that employs a quasi-elastic approach to account for the residual strength of rock material after initial failure. The extent of pillar yielding is evaluated using the Mohr-Coulomb failure criterion. The potential benefits of using progressive failure with EDDM are demonstrated through two- and three-dimensional examples. These examples were chosen to illustrate the flexibility, robustness and power of the proposed method for simulating pillar failure on a mine-wide scale. JF - Proceedings - Symposium on Rock Mechanics AU - Yacoub, T E AU - Curran, J H A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 169 EP - 176 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - rock masses KW - mining KW - mines KW - underground mining KW - roof control KW - stability KW - mathematical models KW - displacements KW - excavations KW - rock mechanics KW - discontinuities KW - faults KW - pillars KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52424885?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Analysis+of+post-peak+pillar+behaviour+using+the+enhanced+displacement+discontinuity+method&rft.au=Yacoub%2C+T+E%3BCurran%2C+J+H&rft.aulast=Yacoub&rft.aufirst=T&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=169&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 14 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - discontinuities; displacements; excavations; faults; mathematical models; mines; mining; pillars; rock masses; rock mechanics; roof control; stability; underground mining ER - TY - JOUR T1 - Subsidence behavior at the SUFCO coal mine, Utah AN - 52424827; 1999-068691 AB - Canyon Fuel Company operates the SUFCO coal mine located in the southern Wasatch Plateau Coal Field approximately 48 km (30 miles) east of Salina, Utah, USA. The mine produces coal from the Upper Hiawatha Seam of the Mesa Verde Group (Cretaceous) strata. Annual subsidence monitoring, mostly by aerial photogrammetric methods, has been conducted for the last 22 years. In 1998, detailed survey measurements of vertical and horizontal displacements over a longwall panel were conducted in order to better understand the response of the 61-m-thick (200-ft-thick) Castlegate Sandstone and to develop a failure criteria for naturally occurring rock formations. Measurements indicate magnitudes and directions of transient and permanent deformation over the panels and gateroads as a result of longwall panel retreat. Vertical subsidence magnitude ranges up to approximately 1.62 m (5.3 ft). Magnitudes of horizontal movement measured over the panel have been up to 0.19 m (0.62 ft). JF - Proceedings - Symposium on Rock Mechanics AU - Goodrich, R R AU - Agapito, J F T AU - Sorensen, W K AU - Black, J A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 465 EP - 472 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - United States KW - Upper Hiawatha coal seam KW - mining KW - monitoring KW - geologic hazards KW - underground mining KW - Sevier County Utah KW - Cretaceous KW - Wasatch Plateau KW - Mesaverde Group KW - data processing KW - SUFCO Mine KW - land subsidence KW - Upper Cretaceous KW - Mesozoic KW - mining geology KW - data bases KW - Utah KW - Salina Utah KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52424827?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Subsidence+behavior+at+the+SUFCO+coal+mine%2C+Utah&rft.au=Goodrich%2C+R+R%3BAgapito%2C+J+F+T%3BSorensen%2C+W+K%3BBlack%2C+J&rft.aulast=Goodrich&rft.aufirst=R&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=465&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 4 N1 - Document feature - illus. incl. sect., sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Cretaceous; data bases; data processing; geologic hazards; land subsidence; Mesaverde Group; Mesozoic; mining; mining geology; monitoring; Salina Utah; Sevier County Utah; SUFCO Mine; underground mining; United States; Upper Cretaceous; Upper Hiawatha coal seam; Utah; Wasatch Plateau ER - TY - JOUR T1 - Effect of leaching on microstructure and flow in an in situ mining operation AN - 52424782; 1999-068681 AB - Permeability and porosity measurements, and microscopic examination, of rock samples obtained from an in situ copper mining operation were carried out before and after several cycles of leaching. The results showed that the permeability and porosity increased initially, but slowed down with continued leaching. Also, the amount of copper recovered decreased gradually. Topographic imaging of the specimens showed an increase in the number of fractures and fracture aperture as leaching progressed. These observations are attributed to dissolution of copper minerals present along the fractures first, resulting in increased porosity and permeability. This phase is followed by stable conditions due to depletion of soluble material along the fractures, and possibly, matrix flow. The field observation showed that the permeability remained constant initially, increasing dramatically after about eight months, and finally, decreasing significantly. The final decrease in permeability is attributed to precipitation of sulfates and/or migration of fines produced, clogging up the fractures. JF - Proceedings - Symposium on Rock Mechanics AU - Harpalani, S AU - Williams, John R Y1 - 1999 PY - 1999 DA - 1999 SP - 381 EP - 387 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - mining KW - solution mining KW - in situ KW - underground mining KW - microstructure KW - porosity KW - fractures KW - fluid injection KW - cracks KW - mining geology KW - metal ores KW - copper ores KW - leaching KW - permeability KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52424782?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Effect+of+leaching+on+microstructure+and+flow+in+an+in+situ+mining+operation&rft.au=Harpalani%2C+S%3BWilliams%2C+John+R&rft.aulast=Harpalani&rft.aufirst=S&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=381&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 14 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2014-03-14 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - copper ores; cracks; fluid injection; fractures; in situ; leaching; metal ores; microstructure; mining; mining geology; permeability; porosity; solution mining; underground mining ER - TY - JOUR T1 - Pillar extraction and rock mechanics at the Doe Run Company in Missouri 1991 to 1999 AN - 52424745; 1999-068669 AB - The Doe Run Company and its predecessors have been mining for over 130 years utilizing the room and pillar mining method. This method has left approximately 20% of the orebody in the remaining pillars. The original design and planning for the mines did not include extensive pillar extraction. This paper summarizes the introduction of the pillar extraction and backfill techniques, which have been implemented since 1991. In conjunction with these accomplishments, much experience and confidence has been gained in the use of numerical modeling as a method of predicting pillar stability as the mining of pillars progresses. These advances have led to pillar extraction becoming a major portion of the overall production and have added to the mine life of Doe Run's eight operating mines in Missouri. JF - Proceedings - Symposium on Rock Mechanics AU - Lane, W L AU - Yanske, T R AU - Roberts, D P A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 285 EP - 292 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - United States KW - Magmont Mine KW - backfill KW - mining KW - underground mining KW - roof control KW - Missouri KW - Sweetwater Mine KW - stability KW - Brushy Creek Mine KW - Fletcher Mine KW - rock mechanics KW - mining geology KW - Casteel Mine KW - Doe Run Company KW - Buick Mine KW - West Fork Mine KW - design KW - pillars KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52424745?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Pillar+extraction+and+rock+mechanics+at+the+Doe+Run+Company+in+Missouri+1991+to+1999&rft.au=Lane%2C+W+L%3BYanske%2C+T+R%3BRoberts%2C+D+P&rft.aulast=Lane&rft.aufirst=W&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=285&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 2 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - backfill; Brushy Creek Mine; Buick Mine; Casteel Mine; design; Doe Run Company; Fletcher Mine; Magmont Mine; mining; mining geology; Missouri; pillars; rock mechanics; roof control; stability; Sweetwater Mine; underground mining; United States; West Fork Mine ER - TY - JOUR T1 - Strength of large rock masses; field verification AN - 52424698; 1999-068667 AB - Most commonly used methods for assessing the shear strength of large rock masses are based on empirical criteria, with the Hoek-Brown criterion having received widespread interest and use over the last 15 years. As a general rule such criteria are based on laboratory scale specimens with very little, and often no, field validation. This paper sets out to provide limited field verification of existing shear strength criteria. The paper critically reviews the Hoek-Brown criterion with particular reference to the shear strength of large rock masses. The review indicates that existing criteria have several severe limitations and are unlikely to predict rock mass behavior over a broad range of conditions. For this reason, it is important that any criterion be validated for the intended use. Several large slopes have been examined with a view to establishing field bounds on shear strength criteria for very large rock masses. JF - Proceedings - Symposium on Rock Mechanics AU - Douglas, K J AU - Mostyn, G A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 271 EP - 276 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - rock masses KW - fractures KW - failures KW - shear strength KW - style KW - stress KW - joints KW - mathematical models KW - slope stability KW - rock mechanics KW - field studies KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52424698?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Strength+of+large+rock+masses%3B+field+verification&rft.au=Douglas%2C+K+J%3BMostyn%2C+G&rft.aulast=Douglas&rft.aufirst=K&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=271&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 17 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - failures; field studies; fractures; joints; mathematical models; rock masses; rock mechanics; shear strength; slope stability; stress; style ER - TY - JOUR T1 - Direct shear tests to imply failure stresses at drill bit AN - 52424671; 1999-068646 AB - The overall objective of this work was to determine strength characteristics for outcrop rocks that are representative of the rock failure mode during drilling. Catoosa shale and Twin Creeks siltstone were tested to represent the range of fine-grained rocks encountered in deep Gulf Coast drilling. Tests were conducted with core plugs submerged in air, water, mineral oil, and a weighted, water-based drilling fluid. The peak failure strengths measured in these tests corresponded well with strengths measured in triaxial tests at similar confining stresses. Residual stresses were measured at large strains and shown to be an inverse, non-linear function of normal stress. Very little difference in failure stress was observed in tests conducted in different fluids. Consequently, the differences in bit rate of penetration performance with different drilling fluids are probably not caused by any effect of drilling fluid environment on formation failure strength. JF - Proceedings - Symposium on Rock Mechanics AU - Smith, J R AU - Lund, J B AU - Galloway, R K A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 109 EP - 114 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - Twin Creeks Siltstone KW - failures KW - strength KW - deep drilling KW - shear tests KW - drilling KW - Gulf Coastal Plain KW - triaxial tests KW - rock mechanics KW - Catoosa Shale KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52424671?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Direct+shear+tests+to+imply+failure+stresses+at+drill+bit&rft.au=Smith%2C+J+R%3BLund%2C+J+B%3BGalloway%2C+R+K&rft.aulast=Smith&rft.aufirst=J&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=109&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 16 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Catoosa Shale; deep drilling; drilling; failures; Gulf Coastal Plain; rock mechanics; shear tests; strength; triaxial tests; Twin Creeks Siltstone ER - TY - JOUR T1 - Multivariate analysis of bore hole discontinuity data AN - 52423570; 1999-068687 AB - This paper describes a new and cost effective method of analyzing hard rock discontinuities from oriented core bore hole data. This algorithm uses multivariate cluster analysis to group discontinuities (joints) into sets based on orientation and spatial position (spacing) along the bore hole, and to display the data in a three dimensional stereonet. Although drift or surface exposure mapping data allows better characterization of discontinuities, bore hole data is often more readily available, because of lower costs. In addition, bore hole data may be more useful because bore holes can be drilled to the exact location where the ground needs to be characterized and bore hole data is usually available earlier in the life cycle of an engineering project. JF - Proceedings - Symposium on Rock Mechanics AU - Maerz, Norbert H AU - Zhou, Wei A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 431 EP - 438 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - fractures KW - boreholes KW - style KW - discontinuities KW - multivariate analysis KW - well-logging KW - statistical analysis KW - joints KW - algorithms KW - rock mechanics KW - cluster analysis KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52423570?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Multivariate+analysis+of+bore+hole+discontinuity+data&rft.au=Maerz%2C+Norbert+H%3BZhou%2C+Wei&rft.aulast=Maerz&rft.aufirst=Norbert&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=431&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 12 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - algorithms; boreholes; cluster analysis; discontinuities; fractures; joints; multivariate analysis; rock mechanics; statistical analysis; style; well-logging ER - TY - JOUR T1 - Experimental study on the mechanical behavior of single joint under a constant tau /sigma loading condition and its application to mechanical modeling AN - 52423538; 1999-068685 AB - Although the joint element method can be applied to numerical analyses of jointed rock masses, the effort in data preparation involving the joint parameters, the constitutive law, and the number of joints is increased. To overcome this difficulty, the equivalent continuous model is applied instead of the joint element method. In this study, focus is placed on the mechanical parameters, normal stiffness k (sub n) and shear stiffness k (sub s) . The relationship of k (sub n) and k (sub s) (Goodman 1984) is measured in this study by constant tau /sigma loading tests. Then, the results are used to determine the material constants of the equivalent continuous model. JF - Proceedings - Symposium on Rock Mechanics AU - Yasuhara, H AU - Kishida, K AU - Fujii, H AU - Adachi, T A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 415 EP - 421 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - fractures KW - style KW - underground storage KW - numerical analysis KW - underground installations KW - stiffness KW - load tests KW - joints KW - mechanical properties KW - deformation KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52423538?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Experimental+study+on+the+mechanical+behavior+of+single+joint+under+a+constant+tau+%2Fsigma+loading+condition+and+its+application+to+mechanical+modeling&rft.au=Yasuhara%2C+H%3BKishida%2C+K%3BFujii%2C+H%3BAdachi%2C+T&rft.aulast=Yasuhara&rft.aufirst=H&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=415&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 6 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - deformation; fractures; joints; load tests; mechanical properties; numerical analysis; stiffness; style; underground installations; underground storage ER - TY - JOUR T1 - Fracture development in rock salt during the diametral compression test AN - 52423506; 1999-068672 AB - This paper presents the results of diametral compression (Brazilian) tests on rock salt. Metallic foil strain electrical resistance gages were used to measure tensile and compressive strains and track fracture development during loading using clear, podular, and argillaceous halite specimens. A charge-coupled device (CCD) camera was used to image fractures and measure the increase in load contact area affecting the distribution of fracture patterns. These tests have provided a better understanding of what effect microstructure, such as grain size and clay inclusions, has on fracture initiation and propagation. JF - Proceedings - Symposium on Rock Mechanics AU - Aimone-Martin, C T AU - Oravecz, K I AU - Bowser, J A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 309 EP - 315 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - halides KW - strain KW - loading KW - elastic properties KW - tensile strength KW - halite KW - rock mechanics KW - fractures KW - cracks KW - chlorides KW - load tests KW - compression KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52423506?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Fracture+development+in+rock+salt+during+the+diametral+compression+test&rft.au=Aimone-Martin%2C+C+T%3BOravecz%2C+K+I%3BBowser%2C+J&rft.aulast=Aimone-Martin&rft.aufirst=C&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=309&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 4 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - chlorides; compression; cracks; elastic properties; fractures; halides; halite; load tests; loading; rock mechanics; strain; tensile strength ER - TY - JOUR T1 - Finite element micromechanical-based model for hydro-mechanical coupling AN - 52423477; 1999-068652 AB - A coupled hydro-mechanical finite element model has been developed. The model can predict the hydro-mechanical coupling for applications such as slopes, tunnels and foundations. The basis for the mechanical part of the system is a micromechanical model for both extensile and shear crack growth. The basis for the hydraulic part of the model is the flow through rectangular tubes. The model takes into account three coupled processes: the decrease in permeability due to the squeezing of initially open cracks, the increase in permeability due to the growth of extensile cracks, and the increase in permeability due to the growth of shear cracks. Calibration studies with the model show close agreement with lab data. JF - Proceedings - Symposium on Rock Mechanics AU - Leem, J AU - Kemeny, J M A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 153 EP - 160 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - rock masses KW - hydraulics KW - numerical models KW - loading KW - statistical analysis KW - mathematical models KW - finite element analysis KW - foundations KW - cracks KW - tunnels KW - shear KW - slope stability KW - permeability KW - anisotropy KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52423477?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Finite+element+micromechanical-based+model+for+hydro-mechanical+coupling&rft.au=Leem%2C+J%3BKemeny%2C+J+M&rft.aulast=Leem&rft.aufirst=J&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=153&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 12 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - anisotropy; cracks; finite element analysis; foundations; hydraulics; loading; mathematical models; numerical models; permeability; rock masses; shear; slope stability; statistical analysis; tunnels ER - TY - JOUR T1 - Coupled finite element/boundary element analysis rock mechanics; industrial applications AN - 52423448; 1999-068649 AB - Experiences with the application of the coupled boundary element/finite element method to large scale industrial problems in rock and soil mechanics are presented. The applications range from problems in tunnelling to the analysis of arch dams. Three case studies will be examined with respect to accuracy and efficiency. Efficiency is measured as time required to generate the mesh, computer time spent in the analysis and time spent for post-processing results. If available, comparison will be made with meshes involving finite elements only. The conclusion of the paper is that a coupled analysis offers a considerable reduction in time spent in the pre-processing/analysis/post-processing but does not result in any appreciable loss of accuracy. JF - Proceedings - Symposium on Rock Mechanics AU - Beer, G AU - Golser, H AU - Jedlitschka, G AU - Zacher, P A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 133 EP - 140 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - soil mechanics KW - finite element analysis KW - three-dimensional models KW - dams KW - statistical analysis KW - applications KW - excavations KW - boundary conditions KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52423448?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Coupled+finite+element%2Fboundary+element+analysis+rock+mechanics%3B+industrial+applications&rft.au=Beer%2C+G%3BGolser%2C+H%3BJedlitschka%2C+G%3BZacher%2C+P&rft.aulast=Beer&rft.aufirst=G&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=133&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 8 N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - applications; boundary conditions; dams; excavations; finite element analysis; rock mechanics; soil mechanics; statistical analysis; three-dimensional models ER - TY - JOUR T1 - Blast vibration monitoring and control; a thirty year perspective AN - 52423412; 1999-068637 AB - Developing trends in important aspects of blast vibration monitoring and control are identified through consideration of research and consulting experiences during the last 30 years. This retrospective view is written to identify strong currents in a large river of progress rather than to develop a comprehensive state of the art, which can be found in my 1996 book, Construction Vibrations. Specific case studies set the stage for the following discussion of trends. These trends in turn provide the background for a possible "out of the box" approach to increase understanding by the lay public of the low impact of vibration at the current control limits. JF - Proceedings - Symposium on Rock Mechanics AU - Dowding, C H A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 45 EP - 47 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - mines KW - monitoring KW - cracks KW - explosions KW - blasting KW - vibration KW - deformation KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52423412?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Blast+vibration+monitoring+and+control%3B+a+thirty+year+perspective&rft.au=Dowding%2C+C+H&rft.aulast=Dowding&rft.aufirst=C&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=45&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - blasting; cracks; deformation; explosions; mines; monitoring; rock mechanics; vibration ER - TY - JOUR T1 - Revisiting Fecker-Rengers-Barton's methods to characterize joint shear dilatancy AN - 52422642; 1999-068686 AB - Fecker-Rengers-Barton's methods were combined within a computer program, using profiles taken from replicas of a natural joint surfaces digitized at 0.5 mm sampling distance. The program can give the distribution of slope angles integrated over all the profiles. The distribution of maximum angles for various base lengths of asperities and the corresponding dilatancy for these maximum angularities were computed using Rengers equation to obtain its behavior in relation with asperities base length (or shear displacement) under null normal stress. An experimental verification of this analog simulation was performed through a direct shear test program on a well-studied replica of a natural joint under null normal stress (push-test) for four different shear directions. The dilatancy characteristic results obtained from this testing program compared to those from the analog simulation show a relatively good agreement and permits an evaluation of the directional anisotropy of dilatancy. JF - Proceedings - Symposium on Rock Mechanics AU - Archambault, G AU - Verreault, N AU - Riss, J AU - Gentier, S A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 423 EP - 430 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - rock masses KW - asperities KW - statistical analysis KW - joints KW - mechanical properties KW - rock mechanics KW - fractures KW - style KW - dilatancy KW - shear KW - anisotropy KW - Fecker-Rengers-Barton's methods KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52422642?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Revisiting+Fecker-Rengers-Barton%27s+methods+to+characterize+joint+shear+dilatancy&rft.au=Archambault%2C+G%3BVerreault%2C+N%3BRiss%2C+J%3BGentier%2C+S&rft.aulast=Archambault&rft.aufirst=G&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=423&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 16 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - anisotropy; asperities; dilatancy; Fecker-Rengers-Barton's methods; fractures; joints; mechanical properties; rock masses; rock mechanics; shear; statistical analysis; style ER - TY - JOUR T1 - Sand production modeling using superquadric discrete elements and coupling of fluid flow and particle motion AN - 52422609; 1999-068653 AB - Techniques for modeling oil well sand production have been developed using the formulations for superquadric discrete elements and Darcy fluid flow. Discrete element models are generated using the new technique of particle cloning. Discrete element sources and sinks allow simulation of sand production from the initial state through the transition to an equilibrium state where particles are created and removed at the same rate. JF - Proceedings - Symposium on Rock Mechanics AU - Preece, Dale S AU - Jensen, Richard P AU - Perkins, Eric D AU - Williams, John R A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 161 EP - 167 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - sand KW - oil wells KW - petroleum engineering KW - fluid injection KW - clastic sediments KW - Darcy's law KW - sediments KW - enhanced recovery KW - fluid dynamics KW - simulation KW - 30:Engineering geology KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52422609?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Sand+production+modeling+using+superquadric+discrete+elements+and+coupling+of+fluid+flow+and+particle+motion&rft.au=Preece%2C+Dale+S%3BJensen%2C+Richard+P%3BPerkins%2C+Eric+D%3BWilliams%2C+John+R&rft.aulast=Preece&rft.aufirst=Dale&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=161&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 6 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - clastic sediments; Darcy's law; enhanced recovery; fluid dynamics; fluid injection; oil wells; petroleum engineering; sand; sediments; simulation ER - TY - JOUR T1 - Modeling jointed rock masses and prediction of slope stabilities by DEM AN - 52422555; 1999-068643 AB - This study presents methods of deciding input data to model jointed rock masses for numerical analysis. First, a laboratory shear test method is presented in which shear testing is performed applying normal stress level of field condition to establish the value of mechanical properties including normal and shear stiffness of natural rock joints. In addition, a field investigation method is also proposed to identify the joint geometry in a rock mass. Finally, these methods are applied to determine the input data for DEM (distinct element method) analysis while carrying out the stability analysis of a jointed rock slope situated in Omaru river dam site, Kyushu island, Japan. The results of the stability analysis convincingly reveal the positive significance of the proposed methods predicting the plane failure along a geological contact as a response to the excavation of the slope for a dam foundation. JF - Proceedings - Symposium on Rock Mechanics AU - Esaki, T AU - Jiang, Y AU - Bhattarai, T N AU - Maeda, T AU - Nozaki, A AU - Mizokami, T A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 83 EP - 90 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - rock masses KW - failures KW - Omaru Dam KW - Kyushu KW - Far East KW - numerical analysis KW - joints KW - fractures KW - foundations KW - style KW - dams KW - shear KW - Asia KW - slope stability KW - distinct element model KW - Japan KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52422555?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Modeling+jointed+rock+masses+and+prediction+of+slope+stabilities+by+DEM&rft.au=Esaki%2C+T%3BJiang%2C+Y%3BBhattarai%2C+T+N%3BMaeda%2C+T%3BNozaki%2C+A%3BMizokami%2C+T&rft.aulast=Esaki&rft.aufirst=T&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=83&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 14 N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Asia; dams; distinct element model; failures; Far East; foundations; fractures; Japan; joints; Kyushu; numerical analysis; Omaru Dam; rock masses; shear; slope stability; style ER - TY - JOUR T1 - Effects of increased recreational activity on desert bighorn sheep in Canyonlands National Park, Utah AN - 52412035; 2000-004712 JF - Open-File Report - U. S. Geological Survey AU - Papouchis, Christopher M AU - Singer, Francis J AU - Sloan, William B AU - Gudorf, Michele Y1 - 1999 PY - 1999 DA - 1999 SP - 31 EP - 33 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - eolian features KW - Ruminantia KW - Chordata KW - Ovis canadensis KW - Mammalia KW - Artiodactyla KW - biogeography KW - deserts KW - Theria KW - habitat KW - dynamics KW - conservation KW - Canyonlands National Park KW - ecology KW - Utah KW - Vertebrata KW - Eutheria KW - USGS KW - Tetrapoda KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52412035?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Environmental+Planning+and+Management&rft.atitle=Values+of+environmental+landscape+amenities+during+the+2000-2006+real+estate+boom+and+subsequent+2008+recession&rft.au=Cho%2C+Seong-Hoon%3BKim%2C+Seung+Gyu%3BRoberts%2C+Roland+K&rft.aulast=Cho&rft.aufirst=Seong-Hoon&rft.date=2011-01-01&rft.volume=54&rft.issue=1&rft.spage=71&rft.isbn=&rft.btitle=&rft.title=Journal+of+Environmental+Planning+and+Management&rft.issn=09640568&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - SuppNotes - Prepared in cooperation with Colorado State University, Natural Resources Ecology Lab N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; biogeography; Canyonlands National Park; Chordata; conservation; deserts; dynamics; ecology; eolian features; Eutheria; habitat; Mammalia; Ovis canadensis; Ruminantia; Tetrapoda; Theria; United States; USGS; Utah; Vertebrata ER - TY - JOUR T1 - A summary of bighorn sheep habitat patterns in Badlands National Park AN - 52412020; 2000-004708 JF - Open-File Report - U. S. Geological Survey AU - Gamo, R Scott AU - Moses, Michael E AU - Bessken, Bruce AU - Singer, Francis J AU - Gudorf, Michele Y1 - 1999 PY - 1999 DA - 1999 SP - 23 EP - 24 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - Ruminantia KW - Chordata KW - patterns KW - Ovis canadensis KW - Mammalia KW - Artiodactyla KW - biogeography KW - Badlands National Park KW - Theria KW - habitat KW - dynamics KW - conservation KW - ecology KW - Vertebrata KW - Eutheria KW - USGS KW - Tetrapoda KW - South Dakota KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52412020?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=A+summary+of+bighorn+sheep+habitat+patterns+in+Badlands+National+Park&rft.au=Gamo%2C+R+Scott%3BMoses%2C+Michael+E%3BBessken%2C+Bruce%3BSinger%2C+Francis+J%3BGudorf%2C+Michele&rft.aulast=Gamo&rft.aufirst=R&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=23&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - SuppNotes - Prepared in cooperation with Colorado State University, Natural Resources Ecology Lab N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; Badlands National Park; biogeography; Chordata; conservation; dynamics; ecology; Eutheria; habitat; Mammalia; Ovis canadensis; patterns; Ruminantia; South Dakota; Tetrapoda; Theria; United States; USGS; Vertebrata ER - TY - JOUR T1 - Morphometric analysis of skull and horn variation in the northern regions of Ovis canadensis AN - 52411974; 2000-004704 JF - Open-File Report - U. S. Geological Survey AU - Ramey, Rob Roy, II AU - Wehausen, John D AU - Singer, Francis J AU - Gudorf, Michele Y1 - 1999 PY - 1999 DA - 1999 SP - 18 EP - 19 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - Ruminantia KW - Chordata KW - horns KW - Ovis canadensis KW - Mammalia KW - Artiodactyla KW - biogeography KW - variations KW - morphology KW - Theria KW - skull KW - habitat KW - spatial variations KW - dynamics KW - conservation KW - DNA KW - ecology KW - Vertebrata KW - Eutheria KW - USGS KW - Tetrapoda KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52411974?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Morphometric+analysis+of+skull+and+horn+variation+in+the+northern+regions+of+Ovis+canadensis&rft.au=Ramey%2C+Rob+Roy%2C+II%3BWehausen%2C+John+D%3BSinger%2C+Francis+J%3BGudorf%2C+Michele&rft.aulast=Ramey&rft.aufirst=Rob&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=18&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - SuppNotes - Prepared in cooperation with Colorado State University, Natural Resources Ecology Lab N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; biogeography; Chordata; conservation; DNA; dynamics; ecology; Eutheria; habitat; horns; Mammalia; morphology; Ovis canadensis; Ruminantia; skull; spatial variations; Tetrapoda; Theria; USGS; variations; Vertebrata ER - TY - JOUR T1 - Dispersal and colonization rates of unoccupied patches by mountain sheep; the role of disease, corridor features, and patch sizes AN - 52411425; 2000-004700 JF - Open-File Report - U. S. Geological Survey AU - Singer, Francis J AU - Moses, Michael E AU - Bellew, S AU - Sloan, W B AU - Gudorf, Michele Y1 - 1999 PY - 1999 DA - 1999 SP - 11 EP - 12 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - Ruminantia KW - migration KW - Chordata KW - Ovis canadensis KW - Mammalia KW - Artiodactyla KW - biogeography KW - Theria KW - habitat KW - dynamics KW - conservation KW - ecology KW - Vertebrata KW - Eutheria KW - USGS KW - Tetrapoda KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52411425?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Dispersal+and+colonization+rates+of+unoccupied+patches+by+mountain+sheep%3B+the+role+of+disease%2C+corridor+features%2C+and+patch+sizes&rft.au=Singer%2C+Francis+J%3BMoses%2C+Michael+E%3BBellew%2C+S%3BSloan%2C+W+B%3BGudorf%2C+Michele&rft.aulast=Singer&rft.aufirst=Francis&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=11&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - SuppNotes - Prepared in cooperation with Colorado State University, Natural Resources Ecology Lab N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; biogeography; Chordata; conservation; dynamics; ecology; Eutheria; habitat; Mammalia; migration; Ovis canadensis; Ruminantia; Tetrapoda; Theria; USGS; Vertebrata ER - TY - JOUR T1 - Restoration of bighorn sheep metapopulations in and near 15 national parks; conservation of severely fragmented species; Volume II, Synopsis of research findings AN - 52411371; 2000-004696 JF - Open-File Report - U. S. Geological Survey AU - Singer, Francis J AU - Gudorf, Michele A Y1 - 1999 PY - 1999 DA - 1999 SP - 35 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - Ruminantia KW - Chordata KW - Ovis canadensis KW - Mammalia KW - national parks KW - Artiodactyla KW - public lands KW - Theria KW - habitat KW - conservation KW - ecology KW - Vertebrata KW - Eutheria KW - USGS KW - Tetrapoda KW - biology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52411371?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Singer%2C+Francis+J%3BGudorf%2C+Michele+A&rft.aulast=Singer&rft.aufirst=Francis&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Restoration+of+bighorn+sheep+metapopulations+in+and+near+15+national+parks%3B+conservation+of+severely+fragmented+species%3B+Volume+II%2C+Synopsis+of+research+findings&rft.title=Restoration+of+bighorn+sheep+metapopulations+in+and+near+15+national+parks%3B+conservation+of+severely+fragmented+species%3B+Volume+II%2C+Synopsis+of+research+findings&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Number of references - 35 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. N1 - SuppNotes - Individual abstracts are cited separately; Prepared in cooperation with Colorado State University, Natural Resources Ecology Lab N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; biology; Chordata; conservation; ecology; Eutheria; habitat; Mammalia; national parks; Ovis canadensis; public lands; Ruminantia; Tetrapoda; Theria; USGS; Vertebrata ER - TY - JOUR T1 - A test of a habitat evaluation procedure for Rocky Mountain bighorn sheep AN - 52410432; 2000-004707 JF - Open-File Report - U. S. Geological Survey AU - Johnson, T L AU - Swift, D M AU - Singer, Francis J AU - Gudorf, Michele Y1 - 1999 PY - 1999 DA - 1999 SP - 22 EP - 23 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - Ruminantia KW - North America KW - Chordata KW - Ovis canadensis KW - Mammalia KW - Artiodactyla KW - U. S. Rocky Mountains KW - biogeography KW - Theria KW - habitat KW - dynamics KW - conservation KW - ecology KW - Vertebrata KW - Eutheria KW - USGS KW - Tetrapoda KW - Rocky Mountains KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52410432?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=A+test+of+a+habitat+evaluation+procedure+for+Rocky+Mountain+bighorn+sheep&rft.au=Lemieux%2C+Richard+N&rft.aulast=Lemieux&rft.aufirst=Richard&rft.date=1984-04-01&rft.volume=41&rft.issue=2&rft.spage=38&rft.isbn=&rft.btitle=&rft.title=The+Internal+Auditor&rft.issn=00205745&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - SuppNotes - Prepared in cooperation with Colorado State University, Natural Resources Ecology Lab N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; biogeography; Chordata; conservation; dynamics; ecology; Eutheria; habitat; Mammalia; North America; Ovis canadensis; Rocky Mountains; Ruminantia; Tetrapoda; Theria; U. S. Rocky Mountains; United States; USGS; Vertebrata ER - TY - JOUR T1 - Assessing decisions on restoration of metapopulations of bighorn sheep; implications of disease, patches, and dispersal rates AN - 52410398; 2000-004701 JF - Open-File Report - U. S. Geological Survey AU - Gross, John E AU - Singer, Francis J AU - Moses, Michael E AU - Gudorf, Michele Y1 - 1999 PY - 1999 DA - 1999 SP - 12 EP - 13 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - Ruminantia KW - Chordata KW - Ovis canadensis KW - Mammalia KW - Artiodactyla KW - biogeography KW - Badlands National Park KW - remediation KW - Theria KW - habitat KW - dynamics KW - conservation KW - ecology KW - Vertebrata KW - Eutheria KW - USGS KW - Tetrapoda KW - South Dakota KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52410398?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Assessing+decisions+on+restoration+of+metapopulations+of+bighorn+sheep%3B+implications+of+disease%2C+patches%2C+and+dispersal+rates&rft.au=Gross%2C+John+E%3BSinger%2C+Francis+J%3BMoses%2C+Michael+E%3BGudorf%2C+Michele&rft.aulast=Gross&rft.aufirst=John&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=12&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - SuppNotes - Prepared in cooperation with Colorado State University, Natural Resources Ecology Lab N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; Badlands National Park; biogeography; Chordata; conservation; dynamics; ecology; Eutheria; habitat; Mammalia; Ovis canadensis; remediation; Ruminantia; South Dakota; Tetrapoda; Theria; United States; USGS; Vertebrata ER - TY - JOUR T1 - The role of infectious diseases on fecundity, survivorship, and dispersal in recovering populations of bighorn sheep AN - 52409981; 2000-004703 JF - Open-File Report - U. S. Geological Survey AU - Singer, Francis J AU - Williams, Elizabeth AU - Miller, Michael AU - Moses, Michael E AU - Gudorf, Michele Y1 - 1999 PY - 1999 DA - 1999 SP - 16 EP - 18 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - Ruminantia KW - Chordata KW - Ovis canadensis KW - Mammalia KW - Artiodactyla KW - biogeography KW - diseases KW - Theria KW - habitat KW - dynamics KW - conservation KW - ecology KW - Vertebrata KW - Eutheria KW - USGS KW - Tetrapoda KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52409981?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=The+role+of+infectious+diseases+on+fecundity%2C+survivorship%2C+and+dispersal+in+recovering+populations+of+bighorn+sheep&rft.au=Singer%2C+Francis+J%3BWilliams%2C+Elizabeth%3BMiller%2C+Michael%3BMoses%2C+Michael+E%3BGudorf%2C+Michele&rft.aulast=Singer&rft.aufirst=Francis&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=16&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - SuppNotes - Prepared in cooperation with Colorado State University, Natural Resources Ecology Lab N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; biogeography; Chordata; conservation; diseases; dynamics; ecology; Eutheria; habitat; Mammalia; Ovis canadensis; Ruminantia; Tetrapoda; Theria; USGS; Vertebrata ER - TY - JOUR T1 - Comparative analysis of allozyme and microsatellite DNA variation in mountain sheep (Ovis canadensis) populations; implications for conservation AN - 52409311; 2000-004706 JF - Open-File Report - U. S. Geological Survey AU - Ramey, Rob Roy, II AU - Johnson, J AU - Singer, Francis J AU - Gudorf, Michele Y1 - 1999 PY - 1999 DA - 1999 SP - 21 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - Ruminantia KW - North America KW - Chordata KW - Ovis canadensis KW - Mammalia KW - Artiodactyla KW - U. S. Rocky Mountains KW - biogeography KW - variations KW - Theria KW - habitat KW - conservation KW - Canyonlands National Park KW - DNA KW - ecology KW - Utah KW - Vertebrata KW - Eutheria KW - USGS KW - Tetrapoda KW - Rocky Mountains KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52409311?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Comparative+analysis+of+allozyme+and+microsatellite+DNA+variation+in+mountain+sheep+%28Ovis+canadensis%29+populations%3B+implications+for+conservation&rft.au=Ramey%2C+Rob+Roy%2C+II%3BJohnson%2C+J%3BSinger%2C+Francis+J%3BGudorf%2C+Michele&rft.aulast=Ramey&rft.aufirst=Rob&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=21&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - SuppNotes - Prepared in cooperation with Colorado State University, Natural Resources Ecology Lab N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; biogeography; Canyonlands National Park; Chordata; conservation; DNA; ecology; Eutheria; habitat; Mammalia; North America; Ovis canadensis; Rocky Mountains; Ruminantia; Tetrapoda; Theria; U. S. Rocky Mountains; United States; USGS; Utah; variations; Vertebrata ER - TY - JOUR T1 - Translocation as a tool for restoring populations of bighorn sheep, Ovis canadensis, into historic range AN - 52409290; 2000-004699 JF - Open-File Report - U. S. Geological Survey AU - Singer, Francis J AU - Papouchis, Christopher M AU - Symonds, K K AU - Gudorf, Michele Y1 - 1999 PY - 1999 DA - 1999 SP - 9 EP - 11 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - Ruminantia KW - migration KW - Chordata KW - Ovis canadensis KW - Mammalia KW - Artiodactyla KW - biogeography KW - history KW - Theria KW - habitat KW - dynamics KW - conservation KW - ecology KW - Vertebrata KW - Eutheria KW - USGS KW - Tetrapoda KW - Midwest KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52409290?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Translocation+as+a+tool+for+restoring+populations+of+bighorn+sheep%2C+Ovis+canadensis%2C+into+historic+range&rft.au=Singer%2C+Francis+J%3BPapouchis%2C+Christopher+M%3BSymonds%2C+K+K%3BGudorf%2C+Michele&rft.aulast=Singer&rft.aufirst=Francis&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=9&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - SuppNotes - Prepared in cooperation with Colorado State University, Natural Resources Ecology Lab N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; biogeography; Chordata; conservation; dynamics; ecology; Eutheria; habitat; history; Mammalia; Midwest; migration; Ovis canadensis; Ruminantia; Tetrapoda; Theria; United States; USGS; Vertebrata ER - TY - JOUR T1 - Influence on scale and topography on GIS-based bighorn sheep habitat models AN - 52408313; 2000-004710 JF - Open-File Report - U. S. Geological Survey AU - Sweanor, P Y AU - Gudorf, Michele A AU - Singer, Francis J Y1 - 1999 PY - 1999 DA - 1999 SP - 27 EP - 29 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - Ruminantia KW - Chordata KW - cartography KW - Ovis canadensis KW - Mammalia KW - Artiodactyla KW - biogeography KW - digital terrain models KW - Theria KW - habitat KW - topography KW - geographic information systems KW - dynamics KW - conservation KW - information systems KW - ecology KW - Vertebrata KW - Eutheria KW - USGS KW - Tetrapoda KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52408313?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Influence+on+scale+and+topography+on+GIS-based+bighorn+sheep+habitat+models&rft.au=Sweanor%2C+P+Y%3BGudorf%2C+Michele+A%3BSinger%2C+Francis+J&rft.aulast=Sweanor&rft.aufirst=P&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=27&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - SuppNotes - Prepared in cooperation with Colorado State University, Natural Resources Ecology Lab N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; biogeography; cartography; Chordata; conservation; digital terrain models; dynamics; ecology; Eutheria; geographic information systems; habitat; information systems; Mammalia; Ovis canadensis; Ruminantia; Tetrapoda; Theria; topography; USGS; Vertebrata ER - TY - JOUR T1 - Development of sightability models for the census of bighorn sheep in Badlands and Canyonlands national parks, progress report 1992-95 AN - 52408265; 2000-004697 JF - Open-File Report - U. S. Geological Survey AU - Moses, Michael E AU - Singer, Francis J AU - Gudorf, Michele Y1 - 1999 PY - 1999 DA - 1999 SP - 6 EP - 7 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - Ruminantia KW - Chordata KW - monitoring KW - Mammalia KW - Artiodactyla KW - vegetation KW - Badlands National Park KW - Theria KW - progress report KW - habitat KW - Canyonlands National Park KW - report KW - ecology KW - Utah KW - Vertebrata KW - Eutheria KW - USGS KW - Tetrapoda KW - South Dakota KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52408265?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Development+of+sightability+models+for+the+census+of+bighorn+sheep+in+Badlands+and+Canyonlands+national+parks%2C+progress+report+1992-95&rft.au=Moses%2C+Michael+E%3BSinger%2C+Francis+J%3BGudorf%2C+Michele&rft.aulast=Moses&rft.aufirst=Michael&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=6&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - SuppNotes - Prepared in cooperation with Colorado State University, Natural Resources Ecology Lab N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; Badlands National Park; Canyonlands National Park; Chordata; ecology; Eutheria; habitat; Mammalia; monitoring; progress report; report; Ruminantia; South Dakota; Tetrapoda; Theria; United States; USGS; Utah; vegetation; Vertebrata ER - TY - JOUR T1 - Further morphometric analyses of mountain sheep in Southwestern United States and Mexico; a report to cooperators AN - 52408049; 2000-004705 JF - Open-File Report - U. S. Geological Survey AU - Wehausen, John D AU - Ramey, Rob Roy, II AU - Singer, Francis J AU - Gudorf, Michele Y1 - 1999 PY - 1999 DA - 1999 SP - 19 EP - 20 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - Ruminantia KW - Chordata KW - Ovis canadensis KW - Mammalia KW - national parks KW - Artiodactyla KW - biogeography KW - Southwestern U.S. KW - public lands KW - morphology KW - Theria KW - habitat KW - Mexico KW - dynamics KW - conservation KW - ecology KW - Vertebrata KW - Eutheria KW - USGS KW - Tetrapoda KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52408049?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Further+morphometric+analyses+of+mountain+sheep+in+Southwestern+United+States+and+Mexico%3B+a+report+to+cooperators&rft.au=Wehausen%2C+John+D%3BRamey%2C+Rob+Roy%2C+II%3BSinger%2C+Francis+J%3BGudorf%2C+Michele&rft.aulast=Wehausen&rft.aufirst=John&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=19&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - SuppNotes - Prepared in cooperation with Colorado State University, Natural Resources Ecology Lab N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; biogeography; Chordata; conservation; dynamics; ecology; Eutheria; habitat; Mammalia; Mexico; morphology; national parks; Ovis canadensis; public lands; Ruminantia; Southwestern U.S.; Tetrapoda; Theria; United States; USGS; Vertebrata ER - TY - JOUR T1 - Simulating desert bighorn sheep populations to support management decisions; effects of patch size, spatial structure, and disease AN - 52407443; 2000-004698 JF - Open-File Report - U. S. Geological Survey AU - Gross, John E AU - Moses, Michael E AU - Singer, Francis J AU - Gudorf, Michele Y1 - 1999 PY - 1999 DA - 1999 SP - 8 EP - 9 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - Ruminantia KW - Chordata KW - Ovis canadensis KW - Mammalia KW - Artiodactyla KW - biogeography KW - models KW - Theria KW - habitat KW - dynamics KW - conservation KW - ecology KW - Vertebrata KW - Eutheria KW - USGS KW - Tetrapoda KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52407443?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Simulating+desert+bighorn+sheep+populations+to+support+management+decisions%3B+effects+of+patch+size%2C+spatial+structure%2C+and+disease&rft.au=Gross%2C+John+E%3BMoses%2C+Michael+E%3BSinger%2C+Francis+J%3BGudorf%2C+Michele&rft.aulast=Gross&rft.aufirst=John&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=8&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - SuppNotes - Prepared in cooperation with Colorado State University, Natural Resources Ecology Lab N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; biogeography; Chordata; conservation; dynamics; ecology; Eutheria; habitat; Mammalia; models; Ovis canadensis; Ruminantia; Tetrapoda; Theria; USGS; Vertebrata ER - TY - JOUR T1 - Applying GIS technology to habitat use by a transplanted bighorn sheep herd in Theodore Roosevelt National Park AN - 52407063; 2000-004711 JF - Open-File Report - U. S. Geological Survey AU - Lewis, Stephen T AU - Singer, Francis J AU - Gudorf, Michele Y1 - 1999 PY - 1999 DA - 1999 SP - 29 EP - 30 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - Ruminantia KW - Chordata KW - cartography KW - Ovis canadensis KW - Mammalia KW - Artiodactyla KW - biogeography KW - California KW - Theria KW - habitat KW - geographic information systems KW - dynamics KW - conservation KW - information systems KW - ecology KW - Theodore Roosevelt National Park KW - Vertebrata KW - Eutheria KW - USGS KW - Tetrapoda KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52407063?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Applying+GIS+technology+to+habitat+use+by+a+transplanted+bighorn+sheep+herd+in+Theodore+Roosevelt+National+Park&rft.au=Lewis%2C+Stephen+T%3BSinger%2C+Francis+J%3BGudorf%2C+Michele&rft.aulast=Lewis&rft.aufirst=Stephen&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=29&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - SuppNotes - Prepared in cooperation with Colorado State University, Natural Resources Ecology Lab N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; biogeography; California; cartography; Chordata; conservation; dynamics; ecology; Eutheria; geographic information systems; habitat; information systems; Mammalia; Ovis canadensis; Ruminantia; Tetrapoda; Theodore Roosevelt National Park; Theria; United States; USGS; Vertebrata ER - TY - JOUR T1 - Unique aspects of the ecology of bighorn sheep occupying a clay hills-prairie environment in Badlands National Park AN - 52407015; 2000-004709 JF - Open-File Report - U. S. Geological Survey AU - Moses, Michael E AU - Bessken, Bruce AU - Gamo, R Scott AU - Cordts, Steve AU - Singer, Francis J AU - Gudorf, Michele Y1 - 1999 PY - 1999 DA - 1999 SP - 25 EP - 26 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - Ruminantia KW - Chordata KW - prairies KW - Ovis canadensis KW - Mammalia KW - Artiodactyla KW - biogeography KW - Badlands National Park KW - Theria KW - habitat KW - dynamics KW - conservation KW - ecology KW - Vertebrata KW - Eutheria KW - USGS KW - Tetrapoda KW - South Dakota KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52407015?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Unique+aspects+of+the+ecology+of+bighorn+sheep+occupying+a+clay+hills-prairie+environment+in+Badlands+National+Park&rft.au=Moses%2C+Michael+E%3BBessken%2C+Bruce%3BGamo%2C+R+Scott%3BCordts%2C+Steve%3BSinger%2C+Francis+J%3BGudorf%2C+Michele&rft.aulast=Moses&rft.aufirst=Michael&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=25&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - SuppNotes - Prepared in cooperation with Colorado State University, Natural Resources Ecology Lab N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; Badlands National Park; biogeography; Chordata; conservation; dynamics; ecology; Eutheria; habitat; Mammalia; Ovis canadensis; prairies; Ruminantia; South Dakota; Tetrapoda; Theria; United States; USGS; Vertebrata ER - TY - JOUR T1 - Investigations of infectious keratoconjunctivitis (pinkeye) in mule deer AN - 52406962; 2000-004702 JF - Open-File Report - U. S. Geological Survey AU - Dubay, Shelli AU - Williams, Elizabeth AU - Singer, Francis J AU - Gudorf, Michele Y1 - 1999 PY - 1999 DA - 1999 SP - 14 EP - 16 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - Ruminantia KW - Chordata KW - Zion National Park KW - Ovis canadensis KW - Odocoileus hemionus KW - Mammalia KW - national parks KW - Artiodactyla KW - public lands KW - diseases KW - Theria KW - bacteria KW - ecology KW - Utah KW - Vertebrata KW - Eutheria KW - USGS KW - Tetrapoda KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52406962?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Investigations+of+infectious+keratoconjunctivitis+%28pinkeye%29+in+mule+deer&rft.au=Dubay%2C+Shelli%3BWilliams%2C+Elizabeth%3BSinger%2C+Francis+J%3BGudorf%2C+Michele&rft.aulast=Dubay&rft.aufirst=Shelli&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=14&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - SuppNotes - Prepared in cooperation with Colorado State University, Natural Resources Ecology Lab N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Artiodactyla; bacteria; Chordata; diseases; ecology; Eutheria; Mammalia; national parks; Odocoileus hemionus; Ovis canadensis; public lands; Ruminantia; Tetrapoda; Theria; United States; USGS; Utah; Vertebrata; Zion National Park ER - TY - JOUR T1 - Geologic system approach to assessment of continental shelf sand deposits AN - 52405127; 2000-012538 JF - Proceedings - Offshore Technology Conference AU - Rowland, John AU - Anonymous Y1 - 1999 PY - 1999 DA - 1999 SP - 57 EP - 63 PB - Offshore Technology Conference, [Dallas, TX] VL - 31, Vol. 1 SN - 0160-3663, 0160-3663 KW - United States KW - sand KW - Virginia KW - erosion KW - clastic sediments KW - nearshore environment KW - environmental analysis KW - preventive measures KW - remediation KW - sands KW - beaches KW - outer shelf KW - Virginia Beach Virginia KW - sediments KW - continental shelf KW - Sandbridge Beach KW - littoral erosion KW - hurricanes KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52405127?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Offshore+Technology+Conference&rft.atitle=Geologic+system+approach+to+assessment+of+continental+shelf+sand+deposits&rft.au=Rowland%2C+John%3BAnonymous&rft.aulast=Rowland&rft.aufirst=John&rft.date=1999-01-01&rft.volume=31%2C+Vol.+1&rft.issue=&rft.spage=57&rft.isbn=&rft.btitle=&rft.title=Proceedings+-+Offshore+Technology+Conference&rft.issn=01603663&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 31st annual offshore technology conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Number of references - 22 N1 - PubXState - TX] N1 - Document feature - illus. incl. 2 tables, geol. sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - OSTCBA N1 - SubjectsTermNotLitGenreText - beaches; clastic sediments; continental shelf; environmental analysis; erosion; hurricanes; littoral erosion; nearshore environment; outer shelf; preventive measures; remediation; sand; Sandbridge Beach; sands; sediments; United States; Virginia; Virginia Beach Virginia ER - TY - JOUR T1 - Case study; environmental investigation of mineral deposits in Wrangell-St. Elias National Park and Preserve, AK AN - 52392221; 2000-016458 JF - Open-File Report - U. S. Geological Survey AU - Eppinger, Robert G AU - Rosenkrans, Danny S AU - Briggs, Paul H AU - Modreski, Peter J Y1 - 1999 PY - 1999 DA - 1999 SP - 10 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - resources KW - acid mine drainage KW - Wrangell Mountains KW - pollution KW - Saint Elias National Park and Preserve KW - production KW - environmental analysis KW - environmental effects KW - Southern Alaska KW - case studies KW - land management KW - metal ores KW - gold ores KW - copper ores KW - Alaska KW - USGS KW - porphyry copper KW - 27A:Economic geology, geology of ore deposits KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52392221?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Case+study%3B+environmental+investigation+of+mineral+deposits+in+Wrangell-St.+Elias+National+Park+and+Preserve%2C+AK&rft.au=Eppinger%2C+Robert+G%3BRosenkrans%2C+Danny+S%3BBriggs%2C+Paul+H%3BModreski%2C+Peter+J&rft.aulast=Eppinger&rft.aufirst=Robert&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=10&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 11th annual U. S. Geological Survey, central region, 1999 poster review N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Number of references - 1 N1 - PubXState - VA N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - acid mine drainage; Alaska; case studies; copper ores; environmental analysis; environmental effects; gold ores; land management; metal ores; pollution; porphyry copper; production; resources; Saint Elias National Park and Preserve; Southern Alaska; United States; USGS; Wrangell Mountains ER - TY - JOUR T1 - Rock falls from Glacier Point above Camp Curry, Yosemite National Park, California AN - 52386909; 2000-018746 JF - Open-File Report - U. S. Geological Survey AU - Wieczorek, Gerald F AU - Snyder, James B Y1 - 1999 PY - 1999 DA - 1999 SP - 22 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - hydrology KW - rockfalls KW - monitoring KW - geologic hazards KW - damage KW - prediction KW - ground water KW - California KW - fractures KW - cracks KW - mass movements KW - Glacier Point KW - Yosemite National Park KW - risk assessment KW - USGS KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52386909?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Rock+falls+from+Glacier+Point+above+Camp+Curry%2C+Yosemite+National+Park%2C+California&rft.au=Wieczorek%2C+Gerald+F%3BSnyder%2C+James+B&rft.aulast=Wieczorek&rft.aufirst=Gerald&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-99-0385/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Number of references - 12 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. sect., 2 tables, sketch map N1 - Last updated - 2016-09-16 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - California; cracks; damage; fractures; geologic hazards; Glacier Point; ground water; hydrology; mass movements; monitoring; prediction; risk assessment; rockfalls; United States; USGS; Yosemite National Park ER - TY - JOUR T1 - Alleghanian plutonism in the Suwannee Terrane AN - 52369407; 2000-030525 AB - The Alleghanian collision of Laurentia and Gondwana was the final episode in the assembly of Pangaea. Its documented magmatic expression in the southeastern U. S. is a dispersed assortment of plutons, predominantly I- and S-type granitoids, emplaced in terranes north of the proposed suture. Granitic rocks from two drillholes located south of the suture in the northern Suwannee terrane, however, have recently been found to have been emplaced during the Alleghanian orogenic event. Crystallization ages determined via SHRIMP U-Pb zircon geochronology are 293+ or -2 Ma and 294+ or -4 Ma (2-sigma errors) for samples from Calhoun Co., Florida, and Seminole Co. Georgia, respectively. Inherited zircons with (super 207) Pb/ (super 206) Pb ages of ca. 550 Ma and ca. 1 Ga were present in the Seminole Co. sample, consistent with a South American provenance (Brasiliano, and Orinoquian or Sunsas-Rondonian, respectively) for this segment of Suwannee terrane lithosphere. Initial epsilon Nd values are -0.1 and -1.0 for Calhoun Co. samples and +1.0 and +1.6 for Seminole Co. samples. Depleted mantle Nd model ages are 1010 and 1107 Ma for Calhoun Co. and 722 and 747 Ma for Seminole Co. rocks. These Nd data indicate that slightly younger sources, or a greater proportion of an asthenospheric mantle component was involved in the petrogenesis of the Seminole Co. granite. Although numerous Alleghanian plutons have been documented on the Laurentian side of the suture, these granites are the only known expressions of Alleghanian magmatism on the Gondwanan plate. The presence of magmatism on both plates supports tectonic models of the Alleghanian event involving an oblique collision between Laurentia and Gondwana. Trace element data for the Suwannee terrane granites place them in the within-plate field on tectonic discrimination diagrams. JF - Abstracts with Programs - Geological Society of America AU - Heatherington, Ann L AU - Mueller, Paul A AU - Wooden, Joseph L AU - Anonymous Y1 - 1999 PY - 1999 DA - 1999 SP - 117 PB - Geological Society of America (GSA), Boulder, CO VL - 31 IS - 7 SN - 0016-7592, 0016-7592 KW - United States KW - silicates KW - Laurentia KW - U/Pb KW - ion probe data KW - I-type granites KW - Pennsylvanian KW - igneous rocks KW - granites KW - mass spectra KW - mantle KW - S-type granites KW - Florida KW - plutonic rocks KW - Calhoun County Florida KW - dates KW - orthosilicates KW - absolute age KW - Gondwana KW - spectra KW - trace elements KW - Southeastern U.S. KW - zircon group KW - Suwannee Terrane KW - plutons KW - Pb/Pb KW - plate collision KW - Pangaea KW - Paleozoic KW - magmatism KW - Carboniferous KW - zircon KW - Eastern U.S. KW - terranes KW - Seminole County Georgia KW - nesosilicates KW - models KW - asthenosphere KW - intrusions KW - plate tectonics KW - SHRIMP data KW - magmas KW - crystallization KW - Georgia KW - Alleghany Orogeny KW - 18:Solid-earth geophysics KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52369407?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Alleghanian+plutonism+in+the+Suwannee+Terrane&rft.au=Heatherington%2C+Ann+L%3BMueller%2C+Paul+A%3BWooden%2C+Joseph+L%3BAnonymous&rft.aulast=Heatherington&rft.aufirst=Ann&rft.date=1999-01-01&rft.volume=31&rft.issue=7&rft.spage=117&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 1999 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2000-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - absolute age; Alleghany Orogeny; asthenosphere; Calhoun County Florida; Carboniferous; crystallization; dates; Eastern U.S.; Florida; Georgia; Gondwana; granites; I-type granites; igneous rocks; intrusions; ion probe data; Laurentia; magmas; magmatism; mantle; mass spectra; models; nesosilicates; orthosilicates; Paleozoic; Pangaea; Pb/Pb; Pennsylvanian; plate collision; plate tectonics; plutonic rocks; plutons; S-type granites; Seminole County Georgia; SHRIMP data; silicates; Southeastern U.S.; spectra; Suwannee Terrane; terranes; trace elements; U/Pb; United States; zircon; zircon group ER - TY - JOUR T1 - An overview of earth systems interpretation in the national park system AN - 52345850; 2000-045222 AB - The National Park System contains more than 375 sites including national parks, monuments, historic sites, seashores, battlefields, and memorials. While virtually all park areas contain geologic resources, approximately 83 park areas were set aside because of their geologic significance. In 1998, more than 287 million people visited national parks and most visitors were exposed to interpretive services provided by the National Park Service. National park sites are natural laboratories where the interrelationships between geologic, biologic, and human systems can be observed firsthand by a wide cross section of people. The National Park Service uses interpretation to help visitors make intellectual and emotional connections with the meanings and values inherent in park resources. Promoting understanding of earth systems relationships is critical for park management and stewardship. The National Park Service is exploring innovative ways to interpret earth systems relationships throughout the park system, including efforts at both natural and cultural parks. Examples of earth systems interpretation occurring at natural parks include an exhibit on the relationship between bedrock geology and rare and endangered plants at Capitol Reef National Park, and programs about how the eruption of Sunset Crater Volcano influenced the Ancestral Puebloan people living in the vicinity. Relationships between people and natural systems are interpreted at Mesa Verde National Park, Harpers Ferry National Historical Park, and other cultural parks. Interpretation of earth systems relationships can occur both in-park and off-site through the use of the world wide web, classroom curricula, and other media. Effective earth systems interpretation is important because it tells the whole park story. Human history is incomplete without exploring the influence that natural resources had on human affairs, and biologic systems are dependent on geologic relationships. National parks also provide other educators and researchers opportunities to interpret earth systems. Together, National Park Service personnel and others can use parks to promote an understanding of the importance of protecting park resources and an understanding of the value that national parks have as places that help us understand the interrelationships of all the systems and processes interacting at the earth's surface. JF - Abstracts with Programs - Geological Society of America AU - Mathis, Allyson C AU - Wood, James F AU - Anonymous Y1 - 1999 PY - 1999 DA - 1999 SP - 35 PB - Geological Society of America (GSA), Boulder, CO VL - 31 IS - 7 SN - 0016-7592, 0016-7592 KW - United States KW - processes KW - human activity KW - national parks KW - interpretation KW - education KW - public lands KW - 15:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52345850?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=An+overview+of+earth+systems+interpretation+in+the+national+park+system&rft.au=Mathis%2C+Allyson+C%3BWood%2C+James+F%3BAnonymous&rft.aulast=Mathis&rft.aufirst=Allyson&rft.date=1999-01-01&rft.volume=31&rft.issue=7&rft.spage=35&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 1999 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2000-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - education; human activity; interpretation; national parks; processes; public lands; United States ER - TY - JOUR T1 - Two-phase formulation of suspended sediment transport AN - 52343954; 2000-048536 AB - Using a two-phase formulation, the vertical and horizontal momentum equations for sediment are used to obtain the concentration and velocity profiles of a dilute suspension of particles in a 2D uniform flow. Assuming the form of the vertical turbulent intensities and dilute concentrations of sediment, one can solve the equations analytically and compare them with experimental data. No empirical coefficients in the model are tuned to match individual experiments, for which the experimental data cover a large range of particle sizes and densities. The models are shown to accurately predict two experimentally observed but theoretically unexplained phenomena: the increased diffusive flux of large particles, and the measurable velocity lag of particles. The increased diffusion of large particles is shown to originate from the added diffusive nature of the sediment's Reynolds stresses. The horizontal velocity lag of particles is due to an induced velocity, termed the drift velocity, resulting from the correlation of particle concentration with areas of low horizontal velocity fluid. JF - Journal of Hydraulic Research = Journal de Recherches Hydrauliques AU - Greimann, B P AU - Muste, M AU - Holly, F M, Jr Y1 - 1999 PY - 1999 DA - 1999 SP - 479 EP - 500 PB - International Association for Hydraulic Research, Delft VL - 37 IS - 4 SN - 0022-1686, 0022-1686 KW - models KW - stream transport KW - viscosity KW - sediment transport KW - shear stress KW - stress KW - waterways KW - suspended materials KW - turbulence KW - diffusivity KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52343954?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Journal+of+Hydraulic+Research+%3D+Journal+de+Recherches+Hydrauliques&rft.atitle=Two-phase+formulation+of+suspended+sediment+transport&rft.au=Greimann%2C+B+P%3BMuste%2C+M%3BHolly%2C+F+M%2C+Jr&rft.aulast=Greimann&rft.aufirst=B&rft.date=1999-01-01&rft.volume=37&rft.issue=4&rft.spage=479&rft.isbn=&rft.btitle=&rft.title=Journal+of+Hydraulic+Research+%3D+Journal+de+Recherches+Hydrauliques&rft.issn=00221686&rft_id=info:doi/ L2 - http://www.tandf.co.uk/journals/TJHR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Number of references - 42 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - IHSBAS N1 - SubjectsTermNotLitGenreText - diffusivity; models; sediment transport; shear stress; stream transport; stress; suspended materials; turbulence; viscosity; waterways ER - TY - JOUR T1 - Land and federal mineral ownernship coverage for southern Wyoming AN - 52340334; 2000-050530 JF - Open-File Report - U. S. Geological Survey AU - Biewick, Laura R H AU - Mercier, Tracey J AU - Taber, Tom T AU - Urbanowski, Shayne R AU - Neasloney, Larry Y1 - 1999 PY - 1999 DA - 1999 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - resources KW - mines KW - cartography KW - government agencies KW - petroleum KW - public lands KW - mineral resources KW - Wyoming KW - southern Wyoming KW - sedimentary rocks KW - geographic information systems KW - coal KW - information systems KW - USGS KW - land use KW - 26A:Economic geology, general, deposits UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52340334?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Real+Estate+Economics&rft.atitle=Foreclosure+Discount%3A+Definition+and+Dynamic+Patterns&rft.au=Zhou%2C+Hanqing%3BYuan%2C+Yuan%3BLako%2C+Christopher%3BSklarz%2C+Michael%3BMcKinney%2C+Charles&rft.aulast=Zhou&rft.aufirst=Hanqing&rft.date=2015-10-01&rft.volume=43&rft.issue=3&rft.spage=683&rft.isbn=&rft.btitle=&rft.title=Real+Estate+Economics&rft.issn=10808620&rft_id=info:doi/ L2 - http://greenwood.cr.usgs.gov/pub/open-file-reports/ofr-99-0553-c/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - PubXState - VA N1 - Document feature - sketch maps N1 - SuppNotes - Accessed on July 11, 2000 N1 - Last updated - 2016-09-16 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - cartography; coal; geographic information systems; government agencies; information systems; land use; mineral resources; mines; petroleum; public lands; resources; sedimentary rocks; southern Wyoming; United States; USGS; Wyoming ER - TY - JOUR T1 - Deposition of the pelagic zooplankton and fish communities of lakes Powell and Mead AN - 52337216; 2000-050498 JF - Open-File Report - U. S. Geological Survey AU - Mueller, Gordon AU - Horn, Michael J Y1 - 1999 PY - 1999 DA - 1999 SP - 449 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - monitoring KW - biomass KW - pelagic environment KW - Lake Powell KW - plankton KW - Colorado River KW - Lake Mead KW - ecology KW - seasonal variations KW - depositional environment KW - zooplankton KW - USGS KW - species diversity KW - biology KW - productivity KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52337216?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Mueller%2C+Gordon%3BHorn%2C+Michael+J&rft.aulast=Mueller&rft.aufirst=Gordon&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Deposition+of+the+pelagic+zooplankton+and+fish+communities+of+lakes+Powell+and+Mead&rft.title=Deposition+of+the+pelagic+zooplankton+and+fish+communities+of+lakes+Powell+and+Mead&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Number of references - 32 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. 11 tables, sketch maps N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - biology; biomass; Colorado River; depositional environment; ecology; Lake Mead; Lake Powell; monitoring; pelagic environment; plankton; productivity; seasonal variations; species diversity; United States; USGS; zooplankton ER - TY - JOUR T1 - National Park Service geologic resources inventory AN - 52334257; 2000-055674 JF - Open-File Report - U. S. Geological Survey AU - Gregson, Joe AU - Heise, Bruce Y1 - 1999 PY - 1999 DA - 1999 SP - 7 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - soils KW - bedrock KW - U. S. National Park Service KW - government agencies KW - geophysical methods KW - national parks KW - surficial geology KW - vegetation KW - public lands KW - areal geology KW - California KW - habitat KW - inventory KW - Death Valley KW - geomorphology KW - USGS KW - 13:Areal geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52334257?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=National+Park+Service+geologic+resources+inventory&rft.au=Gregson%2C+Joe%3BHeise%2C+Bruce&rft.aulast=Gregson&rft.aufirst=Joe&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=7&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Status of geologic research and mapping, Death Valley National Park N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - areal geology; bedrock; California; Death Valley; geomorphology; geophysical methods; government agencies; habitat; inventory; national parks; public lands; soils; surficial geology; U. S. National Park Service; United States; USGS; vegetation ER - TY - JOUR T1 - Geologic highlights of Death Valley National Park AN - 52331870; 2000-055671 JF - Open-File Report - U. S. Geological Survey AU - Machette, Michael N AU - Thompson, R A AU - Essington, Mel Y1 - 1999 PY - 1999 DA - 1999 SP - 3 EP - 4 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - hydrology KW - eolian features KW - bedrock KW - petrology KW - national parks KW - landforms KW - public lands KW - areal geology KW - mineral resources KW - deserts KW - California KW - neotectonics KW - Death Valley KW - drainage basins KW - tectonics KW - geomorphology KW - USGS KW - climate KW - 13:Areal geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52331870?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Geologic+highlights+of+Death+Valley+National+Park&rft.au=Machette%2C+Michael+N%3BThompson%2C+R+A%3BEssington%2C+Mel&rft.aulast=Machette&rft.aufirst=Michael&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=3&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Status of geologic research and mapping, Death Valley National Park N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - areal geology; bedrock; California; climate; Death Valley; deserts; drainage basins; eolian features; geomorphology; hydrology; landforms; mineral resources; national parks; neotectonics; petrology; public lands; tectonics; United States; USGS ER - TY - JOUR T1 - Stop 4; Texas Spring-Echo Canyon AN - 52331364; 2000-055739 JF - Open-File Report - U. S. Geological Survey AU - Klinger, Ralph E AU - Piety, Lucille A Y1 - 1999 PY - 1999 DA - 1999 SP - 172 EP - 174 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - orientation KW - lithostratigraphy KW - Quaternary KW - Funeral Mountains KW - Echo Canyon Thrust KW - flexure KW - Texas Spring Syncline KW - field trips KW - deformation KW - road log KW - geometry KW - Cenozoic KW - California KW - strike KW - Inyo County California KW - synclines KW - folds KW - Death Valley KW - tectonics KW - USGS KW - fault scarps KW - faults KW - 24:Quaternary geology KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52331364?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Stop+4%3B+Texas+Spring-Echo+Canyon&rft.au=Klinger%2C+Ralph+E%3BPiety%2C+Lucille+A&rft.aulast=Klinger&rft.aufirst=Ralph&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=172&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Status of geologic research and mapping, Death Valley National Park N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Number of references - 5 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - California; Cenozoic; Death Valley; deformation; Echo Canyon Thrust; fault scarps; faults; field trips; flexure; folds; Funeral Mountains; geometry; Inyo County California; lithostratigraphy; orientation; Quaternary; road log; strike; synclines; tectonics; Texas Spring Syncline; United States; USGS ER - TY - JOUR T1 - H. Donald "The Kid" Curry, Death Valley's first ranger-geologist AN - 52330993; 2000-055670 JF - Open-File Report - U. S. Geological Survey AU - Santucci, Vincent L AU - Nyborg, Torrey G Y1 - 1999 PY - 1999 DA - 1999 SP - 1 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - California KW - Death Valley KW - Curry, H. Donald KW - USGS KW - biography KW - 15:Miscellaneous UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52330993?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=H.+Donald+%22The+Kid%22+Curry%2C+Death+Valley%27s+first+ranger-geologist&rft.au=Santucci%2C+Vincent+L%3BNyborg%2C+Torrey+G&rft.aulast=Santucci&rft.aufirst=Vincent&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=1&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Status of geologic research and mapping, Death Valley National Park N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - portr. N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - biography; California; Curry, H. Donald; Death Valley; United States; USGS ER - TY - JOUR T1 - Late Cenozoic tephrochronology of Death Valley, California; new insights into stratigraphy, paleogeography, and tectonics AN - 52329974; 2000-055717 JF - Open-File Report - U. S. Geological Survey AU - Knott, Jeffrey R AU - Sarna-Wojcicki, Andrei M AU - Klinger, Ralph E AU - Tinsley, John C, III AU - Troxel, Bennie W Y1 - 1999 PY - 1999 DA - 1999 SP - 115 EP - 116 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - tephrochronology KW - lithostratigraphy KW - volcanic rocks KW - upper Cenozoic KW - igneous rocks KW - deformation KW - paleogeography KW - Cenozoic KW - California KW - pyroclastics KW - Tertiary KW - Neogene KW - alluvial fans KW - Death Valley KW - Pliocene KW - tectonics KW - USGS KW - faults KW - fault zones KW - 16:Structural geology KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52329974?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Late+Cenozoic+tephrochronology+of+Death+Valley%2C+California%3B+new+insights+into+stratigraphy%2C+paleogeography%2C+and+tectonics&rft.au=Knott%2C+Jeffrey+R%3BSarna-Wojcicki%2C+Andrei+M%3BKlinger%2C+Ralph+E%3BTinsley%2C+John+C%2C+III%3BTroxel%2C+Bennie+W&rft.aulast=Knott&rft.aufirst=Jeffrey&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=115&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Status of geologic research and mapping, Death Valley National Park N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - alluvial fans; California; Cenozoic; Death Valley; deformation; fault zones; faults; igneous rocks; lithostratigraphy; Neogene; paleogeography; Pliocene; pyroclastics; tectonics; tephrochronology; Tertiary; United States; upper Cenozoic; USGS; volcanic rocks ER - TY - JOUR T1 - Late Quaternary flexural-slip folding and faulting in the Texas Spring Syncline, Death Valley National Park AN - 52329435; 2000-055733 JF - Open-File Report - U. S. Geological Survey AU - Klinger, Ralph E AU - Piety, Lucille A Y1 - 1999 PY - 1999 DA - 1999 SP - 159 EP - 161 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - orientation KW - Quaternary KW - Texas Spring Syncline KW - deformation KW - flexural-slip KW - geometry KW - Cenozoic KW - California KW - normal faults KW - folds KW - upper Quaternary KW - Death Valley KW - tectonics KW - USGS KW - faults KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52329435?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Late+Quaternary+flexural-slip+folding+and+faulting+in+the+Texas+Spring+Syncline%2C+Death+Valley+National+Park&rft.au=Klinger%2C+Ralph+E%3BPiety%2C+Lucille+A&rft.aulast=Klinger&rft.aufirst=Ralph&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=159&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Status of geologic research and mapping, Death Valley National Park N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Number of references - 4 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - California; Cenozoic; Death Valley; deformation; faults; flexural-slip; folds; geometry; normal faults; orientation; Quaternary; tectonics; Texas Spring Syncline; United States; upper Quaternary; USGS ER - TY - JOUR T1 - Tectonic geomorphology along the Death Valley fault system; evidence for recurrent late Quaternary activity in Death Valley National Park AN - 52328182; 2000-055722 JF - Open-File Report - U. S. Geological Survey AU - Klinger, Ralph E Y1 - 1999 PY - 1999 DA - 1999 SP - 132 EP - 140 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - soils KW - orientation KW - pedogenesis KW - Quaternary KW - right-lateral faults KW - lateral faults KW - landform evolution KW - slip rates KW - geometry KW - Cenozoic KW - California KW - upper Quaternary KW - Death Valley KW - fluvial features KW - Death Valley Fault KW - tectonics KW - geomorphology KW - Furnace Creek Fault KW - USGS KW - fault scarps KW - faults KW - activity KW - 23:Geomorphology KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52328182?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Tectonic+geomorphology+along+the+Death+Valley+fault+system%3B+evidence+for+recurrent+late+Quaternary+activity+in+Death+Valley+National+Park&rft.au=Klinger%2C+Ralph+E&rft.aulast=Klinger&rft.aufirst=Ralph&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=132&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Status of geologic research and mapping, Death Valley National Park N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Number of references - 26 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Document feature - illus. incl. 1 table, geol. sketch map N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - activity; California; Cenozoic; Death Valley; Death Valley Fault; fault scarps; faults; fluvial features; Furnace Creek Fault; geometry; geomorphology; landform evolution; lateral faults; orientation; pedogenesis; Quaternary; right-lateral faults; slip rates; soils; tectonics; United States; upper Quaternary; USGS ER - TY - JOUR T1 - Impacts of late-glacial climate change on an Arctic landscape; it was the water AN - 52327565; 2000-058243 JF - Program and Abstracts - Arctic Science Conference AU - Mann, Daniel H AU - Kunz, M L AU - Reanier, R E AU - Peteet, D M AU - Anderson, Patricia A Y1 - 1999 PY - 1999 DA - 1999 SP - 79 EP - 80 PB - American Association for the Advancement of Science, Arctic Division, Fairbanks, AK VL - 50 KW - United States KW - permafrost KW - Quaternary KW - North Slope KW - effects KW - atmospheric precipitation KW - indicators KW - climate change KW - temperature KW - upper Pleistocene KW - Cenozoic KW - Pleistocene KW - Alaska KW - reconstruction KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52327565?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Program+and+Abstracts+-+Arctic+Science+Conference&rft.atitle=Impacts+of+late-glacial+climate+change+on+an+Arctic+landscape%3B+it+was+the+water&rft.au=Mann%2C+Daniel+H%3BKunz%2C+M+L%3BReanier%2C+R+E%3BPeteet%2C+D+M%3BAnderson%2C+Patricia+A&rft.aulast=Mann&rft.aufirst=Daniel&rft.date=1999-01-01&rft.volume=50&rft.issue=&rft.spage=79&rft.isbn=&rft.btitle=&rft.title=Program+and+Abstracts+-+Arctic+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 50th Arctic science conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - PubXState - AK N1 - Last updated - 2012-06-07 N1 - CODEN - #04953 N1 - SubjectsTermNotLitGenreText - Alaska; atmospheric precipitation; Cenozoic; climate change; effects; indicators; North Slope; permafrost; Pleistocene; Quaternary; reconstruction; temperature; United States; upper Pleistocene ER - TY - JOUR T1 - Requiem for the Denali Fault of Alaska AN - 52325981; 2000-058250 JF - Program and Abstracts - Arctic Science Conference AU - Csejtey, Bela, Jr AU - Ford, Arthur B AU - Brease, Phil F AU - Wrucke, Chester T AU - Anderson, Patricia A Y1 - 1999 PY - 1999 DA - 1999 SP - 174 EP - 175 PB - American Association for the Advancement of Science, Arctic Division, Fairbanks, AK VL - 50 KW - United States KW - bedrock KW - North America KW - Denali Fault KW - Cretaceous KW - Denali National Park KW - Gunsight Pass KW - strike-slip faults KW - Mesozoic KW - revision KW - Talkeetna Superterrane KW - Mount McKinley KW - detection KW - outcrops KW - Alaska KW - faults KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52325981?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Program+and+Abstracts+-+Arctic+Science+Conference&rft.atitle=Requiem+for+the+Denali+Fault+of+Alaska&rft.au=Csejtey%2C+Bela%2C+Jr%3BFord%2C+Arthur+B%3BBrease%2C+Phil+F%3BWrucke%2C+Chester+T%3BAnderson%2C+Patricia+A&rft.aulast=Csejtey&rft.aufirst=Bela&rft.date=1999-01-01&rft.volume=50&rft.issue=&rft.spage=174&rft.isbn=&rft.btitle=&rft.title=Program+and+Abstracts+-+Arctic+Science+Conference&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 50th Arctic science conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - PubXState - AK N1 - Last updated - 2012-06-07 N1 - CODEN - #04953 N1 - SubjectsTermNotLitGenreText - Alaska; bedrock; Cretaceous; Denali Fault; Denali National Park; detection; faults; Gunsight Pass; Mesozoic; Mount McKinley; North America; outcrops; revision; strike-slip faults; Talkeetna Superterrane; United States ER - TY - JOUR T1 - Comments on "America's oldest basketry" AN - 52305736; 2000-066873 AB - A recent publication on directly dated basketry specimens from the western United States (Berger et al. 1998, Radiocarbon 40(2):615-20) contained some misleading information, and in a few cases discussed radiocarbon ages from unacknowledged sources. We provide the missing original citations along with some clarifications. We focus especially on the age of distinctive Fort Rock and Multiple Warp-style sandals, for which we provide additional previously unreported (super 14) C ages. Direct dates on fibers from Fort Rock sandals from 3 different sites range in age from 10,500 cal BP to about 9200 cal BP. Contextual evidence suggests that Multiple Warp sandals may date as early as 6600 cal BP, but the few directly dated specimens are less than 1000 yr old. JF - Radiocarbon AU - Connolly, Thomas J AU - Cannon, William J Y1 - 1999 PY - 1999 DA - 1999 SP - 309 EP - 313 PB - University of Arizona, Department of Geosciences, Tucson, AZ VL - 41 IS - 3 SN - 0033-8222, 0033-8222 KW - United States KW - archaeology KW - Quaternary KW - isotopes KW - Holocene KW - artifacts KW - Cenozoic KW - Oregon KW - radioactive isotopes KW - dates KW - Western U.S. KW - carbon KW - age KW - absolute age KW - applications KW - C-14 KW - accuracy KW - 24:Quaternary geology KW - 03:Geochronology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52305736?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Radiocarbon&rft.atitle=Comments+on+%22America%27s+oldest+basketry%22&rft.au=Connolly%2C+Thomas+J%3BCannon%2C+William+J&rft.aulast=Connolly&rft.aufirst=Thomas&rft.date=1999-01-01&rft.volume=41&rft.issue=3&rft.spage=309&rft.isbn=&rft.btitle=&rft.title=Radiocarbon&rft.issn=00338222&rft_id=info:doi/ L2 - http://www.radiocarbon.org/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Number of references - 21 N1 - PubXState - AZ N1 - Document feature - 1 table, geol. sketch map N1 - SuppNotes - For reference to original see Berger, R., Bendat, M., Parker, A., Radiocarbon, Vol. 40, No. 2, p. 615-620, 1998 N1 - Last updated - 2012-06-07 N1 - CODEN - RACAAT N1 - SubjectsTermNotLitGenreText - absolute age; accuracy; age; applications; archaeology; artifacts; C-14; carbon; Cenozoic; dates; Holocene; isotopes; Oregon; Quaternary; radioactive isotopes; United States; Western U.S. ER - TY - JOUR T1 - Reclamation of a coal mine waste disposal facility to a recreation lake AN - 52299537; 2000-077030 JF - Proceedings of the ... International Conference on Tailings and Mine Waste AU - Stump, Donald E AU - Anonymous Y1 - 1999 PY - 1999 DA - 1999 SP - 791 EP - 796 PB - A. A. Balkema, Rotterdam VL - 6 KW - United States KW - sedimentary rocks KW - monitoring KW - tailings dams KW - coal KW - regulations KW - reclamation KW - dams KW - Kentucky KW - waste disposal KW - Pike County Kentucky KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52299537?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+...+International+Conference+on+Tailings+and+Mine+Waste&rft.atitle=Reclamation+of+a+coal+mine+waste+disposal+facility+to+a+recreation+lake&rft.au=Stump%2C+Donald+E%3BAnonymous&rft.aulast=Stump&rft.aufirst=Donald&rft.date=1999-01-01&rft.volume=6&rft.issue=&rft.spage=791&rft.isbn=9058090256&rft.btitle=&rft.title=Proceedings+of+the+...+International+Conference+on+Tailings+and+Mine+Waste&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Sixth international conference on Tailings and mine waste '99 N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - #04690 N1 - SubjectsTermNotLitGenreText - coal; dams; Kentucky; monitoring; Pike County Kentucky; reclamation; regulations; sedimentary rocks; tailings dams; United States; waste disposal ER - TY - JOUR T1 - Summitville Mine site; wide reclamation design AN - 52299266; 2000-077031 JF - Proceedings of the ... International Conference on Tailings and Mine Waste AU - Gobla, M J AU - Anonymous Y1 - 1999 PY - 1999 DA - 1999 SP - 797 EP - 806 PB - A. A. Balkema, Rotterdam VL - 6 KW - United States KW - mines KW - acid mine drainage KW - Superfund KW - reclamation KW - Rio Grande County Colorado KW - pollution KW - Summitville Mine KW - Del Norte Colorado KW - Colorado KW - design KW - abandoned mines KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52299266?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+...+International+Conference+on+Tailings+and+Mine+Waste&rft.atitle=Summitville+Mine+site%3B+wide+reclamation+design&rft.au=Gobla%2C+M+J%3BAnonymous&rft.aulast=Gobla&rft.aufirst=M&rft.date=1999-01-01&rft.volume=6&rft.issue=&rft.spage=797&rft.isbn=9058090256&rft.btitle=&rft.title=Proceedings+of+the+...+International+Conference+on+Tailings+and+Mine+Waste&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Sixth international conference on Tailings and mine waste '99 N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Number of references - 8 N1 - Last updated - 2012-06-07 N1 - CODEN - #04690 N1 - SubjectsTermNotLitGenreText - abandoned mines; acid mine drainage; Colorado; Del Norte Colorado; design; mines; pollution; reclamation; Rio Grande County Colorado; Summitville Mine; Superfund; United States ER - TY - JOUR T1 - Second-day trip 2 road log, from Albuquerque to San Ysidro, Loma Creston, La Ceja, and Sand Hill Fault AN - 52298423; 2000-073173 JF - Guidebook - New Mexico Geological Society AU - Pazzaglia, Frank J AU - Connell, Sean D AU - Hawley, John AU - Tedford, Richard H AU - Personius, Stephen F AU - Smith, Gary A AU - Cather, Steven M AU - Lucas, Spencer G AU - Hester, Patricia AU - Gilmore, John AU - Woodward, Lee A A2 - Pazzaglia, Frank J. A2 - Lucas, Spencer G. Y1 - 1999 PY - 1999 DA - 1999 SP - 47 EP - 66 PB - New Mexico Geological Society, Socorro, NM VL - 50 SN - 0077-8567, 0077-8567 KW - Diapsida KW - andesites KW - Bernalillo County New Mexico KW - uplifts KW - field trips KW - New Mexico KW - road log KW - sedimentary rocks KW - Abiquiu Formation KW - basalts KW - Arroyo Ojito Formation KW - Sand Hill Fault KW - dacites KW - dinosaurs KW - faults KW - stratigraphy KW - Chordata KW - colluvium KW - clastic sediments KW - structural controls KW - Reptilia KW - Albuquerque Basin KW - Tertiary KW - structural geology KW - Saurischia KW - alluvium KW - fault scarps KW - clastic rocks KW - Tetrapoda KW - United States KW - Zia Formation KW - volcanic rocks KW - sedimentary basins KW - igneous rocks KW - sandstone KW - Sauropoda KW - Cenozoic KW - Archosauria KW - Santa Fe Group KW - sediments KW - basins KW - tectonics KW - Cerro Conejo Formation KW - upper Cenozoic KW - Rio Jemez valley KW - Sauropodomorpha KW - Loma Creston KW - Albuquerque New Mexico KW - La Ceja New Mexico KW - Neogene KW - San Ysidro New Mexico KW - Seismosaurus KW - scarps KW - geomorphology KW - Vertebrata KW - 13:Areal geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52298423?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Guidebook+-+New+Mexico+Geological+Society&rft.atitle=Second-day+trip+2+road+log%2C+from+Albuquerque+to+San+Ysidro%2C+Loma+Creston%2C+La+Ceja%2C+and+Sand+Hill+Fault&rft.au=Pazzaglia%2C+Frank+J%3BConnell%2C+Sean+D%3BHawley%2C+John%3BTedford%2C+Richard+H%3BPersonius%2C+Stephen+F%3BSmith%2C+Gary+A%3BCather%2C+Steven+M%3BLucas%2C+Spencer+G%3BHester%2C+Patricia%3BGilmore%2C+John%3BWoodward%2C+Lee+A&rft.aulast=Pazzaglia&rft.aufirst=Frank&rft.date=1999-01-01&rft.volume=50&rft.issue=&rft.spage=47&rft.isbn=&rft.btitle=&rft.title=Guidebook+-+New+Mexico+Geological+Society&rft.issn=00778567&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - New Mexico Geological Society fiftieth annual field conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - PubXState - NM N1 - Document feature - illus. incl. strat. cols., geol. sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - NMGGA5 N1 - SubjectsTermNotLitGenreText - Abiquiu Formation; Albuquerque Basin; Albuquerque New Mexico; alluvium; andesites; Archosauria; Arroyo Ojito Formation; basalts; basins; Bernalillo County New Mexico; Cenozoic; Cerro Conejo Formation; Chordata; clastic rocks; clastic sediments; colluvium; dacites; Diapsida; dinosaurs; fault scarps; faults; field trips; geomorphology; igneous rocks; La Ceja New Mexico; Loma Creston; Neogene; New Mexico; Reptilia; Rio Jemez valley; road log; San Ysidro New Mexico; Sand Hill Fault; sandstone; Santa Fe Group; Saurischia; Sauropoda; Sauropodomorpha; scarps; sedimentary basins; sedimentary rocks; sediments; Seismosaurus; stratigraphy; structural controls; structural geology; tectonics; Tertiary; Tetrapoda; United States; uplifts; upper Cenozoic; Vertebrata; volcanic rocks; Zia Formation ER - TY - JOUR T1 - Hydrogeologic controls on the geochemical function of the Forest Queen wetland, Colorado AN - 52294242; 2000-077013 JF - Proceedings of the ... International Conference on Tailings and Mine Waste AU - Pavlik, M C AU - Wildeman, T R AU - Kolm, K E AU - Winkler, S AU - Emerick, J AU - Robinson, R AU - Anonymous Y1 - 1999 PY - 1999 DA - 1999 SP - 647 EP - 655 PB - A. A. Balkema, Rotterdam VL - 6 KW - United States KW - zinc KW - vegetation KW - iron KW - Bryophyta KW - Forest Queen Mine KW - bioaccumulation KW - aluminum KW - sedges KW - heavy metals KW - hydrology KW - North America KW - Plantae KW - acid mine drainage KW - pollutants KW - biochemistry KW - pollution KW - U. S. Rocky Mountains KW - Silverton Colorado KW - San Juan Mountains KW - wetlands KW - metals KW - Rocky Mountains KW - Musci KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52294242?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+...+International+Conference+on+Tailings+and+Mine+Waste&rft.atitle=Hydrogeologic+controls+on+the+geochemical+function+of+the+Forest+Queen+wetland%2C+Colorado&rft.au=Pavlik%2C+M+C%3BWildeman%2C+T+R%3BKolm%2C+K+E%3BWinkler%2C+S%3BEmerick%2C+J%3BRobinson%2C+R%3BAnonymous&rft.aulast=Pavlik&rft.aufirst=M&rft.date=1999-01-01&rft.volume=6&rft.issue=&rft.spage=647&rft.isbn=9058090256&rft.btitle=&rft.title=Proceedings+of+the+...+International+Conference+on+Tailings+and+Mine+Waste&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Sixth international conference on Tailings and mine waste '99 N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Number of references - 7 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - #04690 N1 - SubjectsTermNotLitGenreText - acid mine drainage; aluminum; bioaccumulation; biochemistry; Bryophyta; Forest Queen Mine; heavy metals; hydrology; iron; metals; Musci; North America; Plantae; pollutants; pollution; Rocky Mountains; San Juan Mountains; sedges; Silverton Colorado; U. S. Rocky Mountains; United States; vegetation; wetlands; zinc ER - TY - JOUR T1 - Integrated digital spatial analysis methods applied to the study of a dinosaur track bearing horizon in the Middle Jurassic lower Sundance Formation of the Bighorn Basin, Wyoming AN - 52279936; 2001-005763 AB - A recently discovered dinosaur tracksite present on the surface of an oolitic grainstone interval in the Lower Sundance Formation of the Bighorn Basin is the focus of an intense cross-disciplinary study. GIS based precision surveying and photogrammetry are used to facilitate construction of a comprehensive database of information gathered on all aspects of the study and provide a spatial framework for data analysis. Efforts have thus far concentrated on an exposed area of approximately 1600 square meters. Techniques developed from the study of this surface will then be applied to outlying areas of exposure and to tracksite localities elsewhere. A number of functions are well suited for the use of a Geodimeter surveying instrument. This includes establishment of a grid on the surface, supplemental measurement of the track characteristics and three-dimensional location coordinates of targets used in photogrammetric image rectification. The instrument is capable of storing up to 20,000 coordinates and associated attributes in an on-board computer. Data acquisition times are minimal and the format is easily converted to meaningful GIS features in the field to provide up to the minute visual presentation of the data. Extensive photographic documentation and analysis of the track-bearing layer is being completed for the primary area of study. Close range photogrammetry (174 cm above the track surface) is used to document the track surface on a meter by meter basis. These photographs will be georeferenced using the survey data and compiled into an image mosaic that can be transformed into a 3-dimensional representation of the track surface. Various scales of standard format aerial photography, as well as 35 mm photos taken from a Low Altitude Remote Controlled (LARC) plane and from an Ultralight aircraft will be georeferenced to the three-dimensional coordinates and used in the spatial analysis. JF - Abstracts with Programs - Geological Society of America AU - Naus, Michael T AU - Matthews, Neffra A AU - Southwell, Beth AU - Anonymous Y1 - 1999 PY - 1999 DA - 1999 SP - 80 PB - Geological Society of America (GSA), Boulder, CO VL - 31 IS - 7 SN - 0016-7592, 0016-7592 KW - United States KW - geophysical surveys KW - data acquisition KW - data processing KW - photography KW - Sundance Formation KW - sedimentary rocks KW - geographic information systems KW - Bighorn Basin KW - dinosaurs KW - Chordata KW - Upper Jurassic KW - three-dimensional models KW - Jurassic KW - grainstone KW - tracks KW - photogrammetry KW - Middle Jurassic KW - Mesozoic KW - Reptilia KW - Wyoming KW - surveys KW - aerial photography KW - information systems KW - Vertebrata KW - carbonate rocks KW - Tetrapoda KW - instruments KW - remote sensing KW - 12:Stratigraphy KW - 20:Applied geophysics UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52279936?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Integrated+digital+spatial+analysis+methods+applied+to+the+study+of+a+dinosaur+track+bearing+horizon+in+the+Middle+Jurassic+lower+Sundance+Formation+of+the+Bighorn+Basin%2C+Wyoming&rft.au=Naus%2C+Michael+T%3BMatthews%2C+Neffra+A%3BSouthwell%2C+Beth%3BAnonymous&rft.aulast=Naus&rft.aufirst=Michael&rft.date=1999-01-01&rft.volume=31&rft.issue=7&rft.spage=80&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 1999 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2001-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - aerial photography; Bighorn Basin; carbonate rocks; Chordata; data acquisition; data processing; dinosaurs; geographic information systems; geophysical surveys; grainstone; information systems; instruments; Jurassic; Mesozoic; Middle Jurassic; photogrammetry; photography; remote sensing; Reptilia; sedimentary rocks; Sundance Formation; surveys; Tetrapoda; three-dimensional models; tracks; United States; Upper Jurassic; Vertebrata; Wyoming ER - TY - JOUR T1 - Evaluation of alluvial fan flood hazards based on surficial geologic mapping and geomorphologic analyses; an example from west-central Arizona AN - 52270447; 2001-010079 AB - Widespread inundation, local high-velocity flow, and uncertainty in flow paths during floods on alluvial fans present a significant geologic hazard on piedmonts surrounding urban areas of the western U. S. In September 1997, alluvial-fan flooding occurred on Tiger Wash in west-central Arizona as a result of heavy rainfall associated with dissipating tropical storm Nora. We analyzed the distributary part of the Tiger Wash system to evaluate the efficacy of surficial geologic mapping in delineating alluvial fan flood hazard areas. We also collected data to characterize the nature of flood flows on alluvial fans in this region. Investigations consisted of (1) description and mapping of surficial geologic deposits using pre-flood aerial photos; (2) mapping and characterization of inundation that occurred during the 1997 flood; (3) comparison of pre-and post-flood aerial photos to document channel changes; and (4) hydraulic reconstructions of peak discharges in channels at several key localities. Throughout the tributary drainage network and into the upper part of the distributary system, flood flow was conveyed in channels and relatively narrow overbank areas that are inset below adjacent middle Pleistocene to middle Holocene fans and terraces. In the distributary system, flow was partitioned unevenly between major east and west branches; about 75 percent of the peak flow went down the west branch. Broad sheetflood inundation indicative of alluvial fan flooding occurred farther downstream in flow expansions nested in the larger distributary system. Several large new channels developed and substantial channel modification occurred in the west branch system. At least 95 percent of the 1997 flood inundation occurred in areas that were covered by late Holocene deposits prior to the flood. Thus, surficial geologic mapping is an excellent predictor of the extent of flood-prone areas on this piedmont. JF - Abstracts with Programs - Geological Society of America AU - Pearthree, Philip A AU - Klawon, Jeanne E AU - Lehman, Ted W AU - Anonymous Y1 - 1999 PY - 1999 DA - 1999 SP - 194 PB - Geological Society of America (GSA), Boulder, CO VL - 31 IS - 7 SN - 0016-7592, 0016-7592 KW - United States KW - hydrology KW - Quaternary KW - geologic hazards KW - cartography KW - west-central Arizona KW - rainfall KW - characterization KW - channels KW - surficial geology KW - Holocene KW - piedmonts KW - Cenozoic KW - Tiger Wash KW - alluvial fans KW - Arizona KW - floods KW - velocity KW - Pleistocene KW - aerial photography KW - geomorphology KW - discharge KW - remote sensing KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52270447?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Evaluation+of+alluvial+fan+flood+hazards+based+on+surficial+geologic+mapping+and+geomorphologic+analyses%3B+an+example+from+west-central+Arizona&rft.au=Pearthree%2C+Philip+A%3BKlawon%2C+Jeanne+E%3BLehman%2C+Ted+W%3BAnonymous&rft.aulast=Pearthree&rft.aufirst=Philip&rft.date=1999-01-01&rft.volume=31&rft.issue=7&rft.spage=194&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 1999 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2001-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - aerial photography; alluvial fans; Arizona; cartography; Cenozoic; channels; characterization; discharge; floods; geologic hazards; geomorphology; Holocene; hydrology; piedmonts; Pleistocene; Quaternary; rainfall; remote sensing; surficial geology; Tiger Wash; United States; velocity; west-central Arizona ER - TY - JOUR T1 - Geomorphic and ecological responses of the upper San Joaquin River, Ca. to multiple anthropogenic disturbances AN - 52269883; 2001-010129 AB - The upper 230 km of the geomorphically complex San Joaquin River between the Merced River and Friant Dam has been anthropogenically perturbed: 1) hydrologically by dam construction for irrigation, power generation and flood control, as well as by water importation from the Sacramento-San Joaquin River Delta, 2) hydraulically by construction of a flood control system that incorporates levees and flood bypass channels, as well as local non-project levees, and 3) morphologically by in-channel sand and gravel mining and groundwater overdrafting-induced subsidence. Control of flood flows, and water delivery by canal, rather than down-river, combined with in-channel sand and gravel mining have resulted in a poorly defined channel that links a series of valley floor ponds that are bordered by a narrow strip of riparian vegetation in the terrace-confined reach between Friant Dam (RK 400) and Gravelly Ford (RK 344). On the active alluvial fan of the San Joaquin River between Gravelly Ford and Mendota Dam (RK 308), the meandering channel has been leveed, and the bulk of the flood flows are diverted into the Chowchilla Bypass channel. Except during floods, the channel of the San Joaquin River is dry and supports almost no riparian vegetation. Water imported from the Delta is routed down the meandering channel as far as Sack Dam (RK 273) where it supports a narrow riparian community. The formerly multiple-channel, anabranching reach between Sack Dam and the Merced River (RK 177) has been converted into a single channel bordered by intensive agriculture. The channel conveys primarily poor quality agricultural tailwater except under flood conditions when Mariposa and Eastside Bypass flows are returned to the river, and supports limited riparian vegetation with little or no regeneration. The anthropogenic disturbances to the river system and the resulting morphological and hydrological changes have resulted in the extirpation of anadromous Spring and Fall-run chinook salmon, as well as steelhead. JF - Abstracts with Programs - Geological Society of America AU - Harvey, Michael D AU - Mussetter, Robert A AU - Chainey, Steven J AU - Landis, Paula J AU - Anonymous Y1 - 1999 PY - 1999 DA - 1999 SP - 201 PB - Geological Society of America (GSA), Boulder, CO VL - 31 IS - 7 SN - 0016-7592, 0016-7592 KW - United States KW - geologic hazards KW - subsidence KW - vegetation KW - terraces KW - ground water KW - California KW - controls KW - San Joaquin River KW - Sack Dam KW - dams KW - floods KW - ecology KW - Friant Dam KW - construction KW - Gravelly Ford KW - hydrology KW - canals KW - meanders KW - Mendota Dam KW - human activity KW - levees KW - riparian environment KW - fluvial features KW - seasonal variations KW - geomorphology KW - 23:Geomorphology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52269883?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Geomorphic+and+ecological+responses+of+the+upper+San+Joaquin+River%2C+Ca.+to+multiple+anthropogenic+disturbances&rft.au=Harvey%2C+Michael+D%3BMussetter%2C+Robert+A%3BChainey%2C+Steven+J%3BLandis%2C+Paula+J%3BAnonymous&rft.aulast=Harvey&rft.aufirst=Michael&rft.date=1999-01-01&rft.volume=31&rft.issue=7&rft.spage=201&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 1999 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2001-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - California; canals; construction; controls; dams; ecology; floods; fluvial features; Friant Dam; geologic hazards; geomorphology; Gravelly Ford; ground water; human activity; hydrology; levees; meanders; Mendota Dam; riparian environment; Sack Dam; San Joaquin River; seasonal variations; subsidence; terraces; United States; vegetation ER - TY - JOUR T1 - Environmental Protection Agency Office of Radiation and Indoor Air's abandoned mine land database inventory study AN - 52268046; 2001-015208 AB - Since the 1960's, billions of dollars have been spent by various federal and state agencies generating abandoned mine lands-related data. Often databases were created to store and manage this information. The Environmental Protection Agency, Office of Radiation and Indoor Air, and the National Park Service, Geologic Resources Division, are developing a pilot project to locate and evaluate these abandoned mine lands-related databases. This "database of databases" named the DATAMINER will list, categorize, and compare databases that can be used for the evaluation, prioritization, characterization, and reclamation of abandoned mine lands. Through this project, the Environmental Protection Agency will avoid duplication of efforts, conserve resources, assist decision makers in a better understanding of what information is available on abandoned mines sites, and protect public health. JF - Abstracts with Programs - Geological Society of America AU - Gese, Diann D AU - Setlow, Loren W AU - Anonymous Y1 - 1999 PY - 1999 DA - 1999 SP - 247 PB - Geological Society of America (GSA), Boulder, CO VL - 31 IS - 7 SN - 0016-7592, 0016-7592 KW - mines KW - Office of Radiation and Indoor Air KW - medical geology KW - reclamation KW - government agencies KW - data processing KW - characterization KW - U. S. Environmental Protection Agency KW - history KW - conservation KW - inventory KW - data bases KW - DATAMINER KW - abandoned mines KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52268046?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Environmental+Protection+Agency+Office+of+Radiation+and+Indoor+Air%27s+abandoned+mine+land+database+inventory+study&rft.au=Gese%2C+Diann+D%3BSetlow%2C+Loren+W%3BAnonymous&rft.aulast=Gese&rft.aufirst=Diann&rft.date=1999-01-01&rft.volume=31&rft.issue=7&rft.spage=247&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 1999 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2001-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - abandoned mines; characterization; conservation; data bases; data processing; DATAMINER; government agencies; history; inventory; medical geology; mines; Office of Radiation and Indoor Air; reclamation; U. S. Environmental Protection Agency ER - TY - JOUR T1 - Pineview Dam; evaluating the risks of foundation liquefaction and deformation in a complex sandy gravel environment under very high seismic loading conditions AN - 52260888; 2001-019112 AB - Pineview Dam is a zoned earth embankment located on the Ogden River approximately 5 miles east of Ogden Utah. Seismic loads are very high and there is a large population at risk downstream of the dam in a narrow, confined canyon. The dam was constructed in 1937 and raised 30 feet in 1957. Foundation investigations and analyses performed in 1990 resulted in a decision to construct a stability berm at the downstream toe to improve the dynamic stability. A dynamic stability analysis was not performed. Decisions concerning the potential for foundation liquefaction were made by estimating the ability of the complex sandy gravel foundation to dissipate pore pressure during an earthquake. The foundation depositional environment is very complex and includes lacustrine deposits from prehistoric Lake Bonneville and smaller lakes, delta and fan deposits from side channels, various alluvial deposits from the Ogden River, and various deposits from the steep valley walls due to mass wasting. Field investigations included Standard Penetration Testing, borehole shear wave velocity testing, and sampling. Drilling was difficult and sample recovery was overall very poor. In 1998, Reclamation completed a probabilistic risk analysis for Pineview Dam, which included seismic, static, and hydrologic loading. The results of the risk analysis indicated that additional analysis and data are needed to better understand the potential for foundation deformation and embankment cracking. Because of the very high seismic loading conditions and the large population at risk, a very high level of confidence is needed to meet public risk guidelines when determining foundation performance. The difficulties of reaching this high level of confidence through geologic investigations and analysis are presented along with a summary of the various analytical tools utilized. The difficulties of drilling, sampling, measuring, and modeling in this complex sandy gravel foundation are also discussed along with the 1999 exploration program which is currently underway. JF - Abstracts with Programs - Geological Society of America AU - Shaffner, Peter T AU - Anonymous Y1 - 1999 PY - 1999 DA - 1999 SP - 286 PB - Geological Society of America (GSA), Boulder, CO VL - 31 IS - 7 SN - 0016-7592, 0016-7592 KW - United States KW - Ogden River KW - stability KW - gravel KW - seismic response KW - liquefaction KW - foundations KW - sampling KW - pore pressure KW - seismic risk KW - sediments KW - velocity KW - drilling KW - depositional environment KW - Pineview Dam KW - Lake Bonneville KW - clastic sediments KW - loading KW - decision-making KW - deformation KW - measurement KW - models KW - lacustrine environment KW - Utah KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52260888?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Pineview+Dam%3B+evaluating+the+risks+of+foundation+liquefaction+and+deformation+in+a+complex+sandy+gravel+environment+under+very+high+seismic+loading+conditions&rft.au=Shaffner%2C+Peter+T%3BAnonymous&rft.aulast=Shaffner&rft.aufirst=Peter&rft.date=1999-01-01&rft.volume=31&rft.issue=7&rft.spage=286&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 1999 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2001-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - clastic sediments; decision-making; deformation; depositional environment; drilling; foundations; gravel; lacustrine environment; Lake Bonneville; liquefaction; loading; measurement; models; Ogden River; Pineview Dam; pore pressure; sampling; sediments; seismic response; seismic risk; stability; United States; Utah; velocity ER - TY - JOUR T1 - Field screening of water quality, bottom sediment, and biota associated with irrigation drainage in the North Platte Project area, Nebraska and Wyoming AN - 52250948; 2001-025514 JF - Water-Resources Investigations - U. S. Geological Survey AU - Druliner, A D AU - Esmoil, Brent J AU - Spears, J Mark Y1 - 1999 PY - 1999 DA - 1999 SP - 43 PB - U. S. Geological Survey, [Reston, VA] SN - 0092-332X, 0092-332X KW - United States KW - chlorinated hydrocarbons KW - water quality KW - selenium KW - stream sediments KW - PCBs KW - Goshen County Wyoming KW - organochlorine pesticides KW - bioavailability KW - vegetation KW - environmental effects KW - bioaccumulation KW - Pisces KW - sediments KW - halogenated hydrocarbons KW - ecology KW - USGS KW - chromium KW - bedload KW - insecticides KW - concentration KW - Chordata KW - pollutants KW - Morrill County Nebraska KW - DDD KW - Scotts Bluff County Nebraska KW - surface water KW - arsenic KW - pollution KW - bioassays KW - biota KW - Wyoming KW - Sioux County Nebraska KW - organic compounds KW - metals KW - DDT KW - uranium KW - Vertebrata KW - pesticides KW - Nebraska KW - fluvial environment KW - actinides KW - North Platte Project KW - 22:Environmental geology KW - 02A:General geochemistry UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52250948?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/GeoRef&rft_val_fmt=info:ofi/fmt:kev:mtx:book&rft.genre=book&rft.jtitle=&rft.atitle=&rft.au=Druliner%2C+A+D%3BEsmoil%2C+Brent+J%3BSpears%2C+J+Mark&rft.aulast=Druliner&rft.aufirst=A&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=&rft.isbn=&rft.btitle=Field+screening+of+water+quality%2C+bottom+sediment%2C+and+biota+associated+with+irrigation+drainage+in+the+North+Platte+Project+area%2C+Nebraska+and+Wyoming&rft.title=Field+screening+of+water+quality%2C+bottom+sediment%2C+and+biota+associated+with+irrigation+drainage+in+the+North+Platte+Project+area%2C+Nebraska+and+Wyoming&rft.issn=0092332X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Number of references - 52 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA] N1 - Document feature - illus. incl. 8 tables, sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - WRIND3 N1 - SubjectsTermNotLitGenreText - actinides; arsenic; bedload; bioaccumulation; bioassays; bioavailability; biota; chlorinated hydrocarbons; Chordata; chromium; concentration; DDD; DDT; ecology; environmental effects; fluvial environment; Goshen County Wyoming; halogenated hydrocarbons; insecticides; metals; Morrill County Nebraska; Nebraska; North Platte Project; organic compounds; organochlorine pesticides; PCBs; pesticides; Pisces; pollutants; pollution; Scotts Bluff County Nebraska; sediments; selenium; Sioux County Nebraska; stream sediments; surface water; United States; uranium; USGS; vegetation; Vertebrata; water quality; Wyoming ER - TY - JOUR T1 - Ground- and surface-water geochemical insights into the behavior of limestone amendment at the reclaimed Cabin Branch pyrite mine, Prince William Forest Park, Virginia AN - 52238173; 2001-031679 JF - Abstracts with Programs - Geological Society of America AU - Seal, Robert R, II AU - Haffner, David P AU - Meier, Allen L AU - Pollio, Carol A AU - Anonymous Y1 - 1999 PY - 1999 DA - 1999 SP - 333 PB - Geological Society of America (GSA), Boulder, CO VL - 31 IS - 7 SN - 0016-7592, 0016-7592 KW - United States KW - limestone KW - volcanic rocks KW - igneous rocks KW - reclamation KW - ground water KW - sedimentary rocks KW - copper ores KW - pyrite ores KW - alkalinity KW - geochemistry KW - pH KW - heavy metals KW - Atlantic Coastal Plain KW - soils KW - Prince William County Virginia KW - revegetation KW - lead ores KW - Virginia KW - host rocks KW - zinc ores KW - surface water KW - pollution KW - solubility KW - Prince William Forest Park KW - hydrochemistry KW - aquifers KW - massive sulfide deposits KW - history KW - alluvium aquifers KW - saturation KW - metal ores KW - massive deposits KW - carbonate rocks KW - tailings KW - Cabin Branch Mine KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52238173?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Ground-+and+surface-water+geochemical+insights+into+the+behavior+of+limestone+amendment+at+the+reclaimed+Cabin+Branch+pyrite+mine%2C+Prince+William+Forest+Park%2C+Virginia&rft.au=Seal%2C+Robert+R%2C+II%3BHaffner%2C+David+P%3BMeier%2C+Allen+L%3BPollio%2C+Carol+A%3BAnonymous&rft.aulast=Seal&rft.aufirst=Robert&rft.date=1999-01-01&rft.volume=31&rft.issue=7&rft.spage=333&rft.isbn=&rft.btitle=&rft.title=The+Appraisal+Journal&rft.issn=00037087&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 1999 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2001-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - alkalinity; alluvium aquifers; aquifers; Atlantic Coastal Plain; Cabin Branch Mine; carbonate rocks; copper ores; geochemistry; ground water; heavy metals; history; host rocks; hydrochemistry; igneous rocks; lead ores; limestone; massive deposits; massive sulfide deposits; metal ores; pH; pollution; Prince William County Virginia; Prince William Forest Park; pyrite ores; reclamation; revegetation; saturation; sedimentary rocks; soils; solubility; surface water; tailings; United States; Virginia; volcanic rocks; zinc ores ER - TY - JOUR T1 - Application of geochemical modeling and hydrologic techniques to interpret sources, mixing and evolution of mineral drainage AN - 52217893; 2001-047961 AB - The geochemical code PHREEQC was used in an investigation of potential recharge sources to a flooded pit affected by acid drainage. Pit water quality had been alkaline with low metals and moderate dissolved solids content for at least 15 years. A decline in water quality occurred with a decrease in pH, and increase in dissolved aluminum, manganese and sulfate. The recharge area for the flooded pit included a coal refuse pile, flooded underground mine works, flyash pile, surface minespoil and a sediment pond. A set of water quality samples were analyzed for mine drainage parameters, major dissolved constituents and some trace metals. These data were inverse modeled using the flooded pit water as the end product. Mixing of several possible sources and single source recharge scenarios were run along the inferred ground water flow path. Mixing of coal refuse pile leachate with leakage from the sediment pond or minespoil provided acceptable characterization as the principal sources controlling pit water chemistry. These results were consistent with the ground water flow path interpreted from water level measurements in wells, structure, air photos and mining history. The dominant rock-water interactions modeled were dissolution of carbonate minerals and stored sulfate salts. Simple binary mixing was not adequate to describe the reaction path and resultant water chemistry. Geochemical models were useful for assessing mine drainage sources, and can be included as one of a collection of investigative tools. JF - Proceedings of the Annual National Meeting - American Society for Surface Mining and Reclamation AU - Perry, Eric F AU - Evans, S A2 - Bengson, Stuart A. A2 - Bland, Douglas M. Y1 - 1999 PY - 1999 DA - 1999 SP - 444 EP - 452 PB - American Society for Surface Mining and Reclamation, [location varies] VL - 16, Vol. 2 KW - United States KW - water quality KW - mining KW - Pennsylvanian KW - Preston County West Virginia KW - techniques KW - ground water KW - Freeport Formation KW - mixing KW - interpretation KW - discharge KW - pH KW - abandoned mines KW - West Virginia KW - hydrology KW - mines KW - acid mine drainage KW - surface mining KW - Paleozoic KW - Carboniferous KW - pollution KW - models KW - recharge KW - spoils KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52217893?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+Annual+National+Meeting+-+American+Society+for+Surface+Mining+and+Reclamation&rft.atitle=Application+of+geochemical+modeling+and+hydrologic+techniques+to+interpret+sources%2C+mixing+and+evolution+of+mineral+drainage&rft.au=Perry%2C+Eric+F%3BEvans%2C+S&rft.aulast=Perry&rft.aufirst=Eric&rft.date=1999-01-01&rft.volume=16%2C+Vol.+2&rft.issue=&rft.spage=444&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+Annual+National+Meeting+-+American+Society+for+Surface+Mining+and+Reclamation&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 16th annual National meeting of the American Society for Surface Mining and Reclamation N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Number of references - 10 N1 - Document feature - 4 tables, sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - #03219 N1 - SubjectsTermNotLitGenreText - abandoned mines; acid mine drainage; Carboniferous; discharge; Freeport Formation; ground water; hydrology; interpretation; mines; mining; mixing; models; Paleozoic; Pennsylvanian; pH; pollution; Preston County West Virginia; recharge; spoils; surface mining; techniques; United States; water quality; West Virginia ER - TY - JOUR T1 - A concise method for mine soils analysis AN - 52217765; 2001-047942 AB - A large number of abandoned hard rock mines exist in Colorado and other mountain west states, many on public property. Public pressure and resulting policy changes have become a driving force in the reclamation of these sites. Two of the key reclamation issues for these sites is the occurrence of acid forming materials (AFMs) in mine soils, and acid mine drainage (AMD) issuing from mine adits. An AMD treatment system design project for the Forest Queen mine in Colorado's San Juan mountains raised the need for a simple, useable method for analysis of mine land soils, both for suitability as a construction material, and to determine the AFM content and potential for acid release. We have developed a simple, stepwise, go-no go test for the analysis of mine soils. Samples were collected from a variety of sites in the Silverton, CO area, and subjected to three tiers of tests including: paste pH, Eh, and 10% HCl fizz test; then total digestion in HNO (sub 3) /HCl, neutralization potential, exposure to meteoric water, and toxicity content leaching procedure (TCLP). All elemental analyses were performed with an inductively-coupled plasma (ICP) spectrometer. Elimination of samples via the first two testing tiers left two remaining samples, which were subsequently subjected to column and sequential batch tests, with further elemental analysis by ICP. Based on these tests, one sample was chosen for suitability as a construction material for the Forest Queen treatment system basins. Further simplification, and testing on two pairs of independent soil samples, has resulted in a final analytical method suitable for general use. JF - Proceedings of the Annual National Meeting - American Society for Surface Mining and Reclamation AU - Winkler, Scott AU - Wildeman, Thomas R AU - Robinson, Robert AU - Herron, James A2 - Bengson, Stuart A. A2 - Bland, Douglas M. Y1 - 1999 PY - 1999 DA - 1999 SP - 236 EP - 244 PB - American Society for Surface Mining and Reclamation, [location varies] VL - 16 KW - United States KW - soils KW - North America KW - mines KW - acid mine drainage KW - reclamation KW - Forrest Queen Mine KW - pollution KW - U. S. Rocky Mountains KW - San Juan Mountains KW - analysis KW - Colorado KW - Rocky Mountains KW - abandoned mines KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52217765?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+Annual+National+Meeting+-+American+Society+for+Surface+Mining+and+Reclamation&rft.atitle=A+concise+method+for+mine+soils+analysis&rft.au=Winkler%2C+Scott%3BWildeman%2C+Thomas+R%3BRobinson%2C+Robert%3BHerron%2C+James&rft.aulast=Winkler&rft.aufirst=Scott&rft.date=1999-01-01&rft.volume=16&rft.issue=&rft.spage=236&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+Annual+National+Meeting+-+American+Society+for+Surface+Mining+and+Reclamation&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 16th annual National meeting of the American Society for Surface Mining and Reclamation N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Number of references - 4 N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2012-06-07 N1 - CODEN - #03219 N1 - SubjectsTermNotLitGenreText - abandoned mines; acid mine drainage; analysis; Colorado; Forrest Queen Mine; mines; North America; pollution; reclamation; Rocky Mountains; San Juan Mountains; soils; U. S. Rocky Mountains; United States ER - TY - JOUR T1 - Evaluation of reclaimed abandoned bentonite mine lands AN - 52217376; 2001-047946 AB - In 1985, the Abandoned Mined Land Division of the Wyoming Department of Environmental Quality began reclamation of 4,148 ha of abandoned bentonite mined lands. Calcium amendments and sawmill wood wastes were applied to the regraded spoils to enhance water infiltration, displacement of Na on the clay spoil, and leaching of the displaced Na and other soluble salts. Revegetation of these lands was generally successful, but after several years small areas (0.1-0.2 ha) began to show signs of vegetation stress or death. The purpose of this research was to determine the cause of vegetation die-back and to prescribe corrective treatment options. A randomized block design was imposed on study areas near Upton, Colony, and Greybull, Wyoming to characterize spoil chemical properties of "good," "moderate," and "dead" vegetation zones, which were subjectively delineated by visual vegetation cover and density differences. Spoil analyses indicated exchangeable-sodium (Na) concentrations were high and the "dead" vegetation zones exhibited exchangeable-sodium-percentages (ESP) above 50%, while surrounding "good" vegetation zones exhibited ESP values <10%. This coupled with low soluble-Na concentrations (<2 cmol/kg) suggests insufficient calcium (Ca) amendments were initially applied to ameliorate the sodic conditions of the spoil. The sampling design used to determine Ca amendment rates, which consisted of a composite of 5 spoil cores taken from each 0.8 ha area, was apparently insufficient to account for the highly heterogeneous spoil material that occurred throughout these abandoned bentonite reclamation sites. To revegetate these small degraded sites, additional Ca amendment would be necessary and reseeding would be required. However, we recommend further monitoring of the affected sites to determine if unfavorable conditions continue to degrade the reclaimed landscape before any attempt is made to rehabilitate the affected sites. If the degraded sites are stable, further Remediation efforts are not warranted because small areas of little or no vegetation are common on native landscapes of these areas. JF - Proceedings of the Annual National Meeting - American Society for Surface Mining and Reclamation AU - Edinger, K D AU - Schuman, G E AU - Vance, George F A2 - Bengson, Stuart A. A2 - Bland, Douglas M. Y1 - 1999 PY - 1999 DA - 1999 SP - 273 EP - 286 PB - American Society for Surface Mining and Reclamation, [location varies] VL - 16 KW - United States KW - clay KW - mines KW - bentonite KW - clastic sediments KW - reclamation KW - pollution KW - Wyoming Department of Environmental Quality KW - vegetation KW - evaluation KW - Wyoming KW - sedimentary rocks KW - Colony Wyoming KW - spoils KW - Surface Mining Control and Reclamation Act 1977 KW - Upton Wyoming KW - sediments KW - Big Horn County Wyoming KW - Greybull Wyoming KW - clastic rocks KW - abandoned mines KW - Crook County Wyoming KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52217376?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+Annual+National+Meeting+-+American+Society+for+Surface+Mining+and+Reclamation&rft.atitle=Evaluation+of+reclaimed+abandoned+bentonite+mine+lands&rft.au=Edinger%2C+K+D%3BSchuman%2C+G+E%3BVance%2C+George+F&rft.aulast=Edinger&rft.aufirst=K&rft.date=1999-01-01&rft.volume=16&rft.issue=&rft.spage=273&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+Annual+National+Meeting+-+American+Society+for+Surface+Mining+and+Reclamation&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 16th annual National meeting of the American Society for Surface Mining and Reclamation N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Number of references - 21 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - #03219 N1 - SubjectsTermNotLitGenreText - abandoned mines; bentonite; Big Horn County Wyoming; clastic rocks; clastic sediments; clay; Colony Wyoming; Crook County Wyoming; evaluation; Greybull Wyoming; mines; pollution; reclamation; sedimentary rocks; sediments; spoils; Surface Mining Control and Reclamation Act 1977; United States; Upton Wyoming; vegetation; Wyoming; Wyoming Department of Environmental Quality ER - TY - JOUR T1 - Fate and transport of metals in a natural wetland receiving mine drainage AN - 52217148; 2001-047976 AB - The Forest Queen Wetland, adjacent to the Animas River near Silverton, Colorado receives acid mine drainage from the adit of the Forest Queen Mine. Because the pH of the mine drainage averages between 3 and 5 and the iron concentration averages 18 mg/L, it was thought that the wetland would naturally treat the water. One of the important contaminants to be treated is zinc which averages 0.60 mg/L in the adit water, while the aquatic criterion is 0.50 mg/L. In the study that was undertaken to determine whether metal removal was occurring, considerable effort was made to link the water and soil chemistry with the wetland hydrology. There are at least two water systems influencing the wetland: the mine drainage across the surface and ground water from the adjacent slope that typically flows under the wetland. These two are, for the most part, separated form each other by a layer of peat that is of low hydraulic conductivity and is over 1.8 meters deep in places. Because of the separated hydrologic systems, the Fe and Al is removed from the adit effluent when it flows across the surface. However, because the PH does not exceed 6.5 for the most part, Zn is not removed. JF - Proceedings of the Annual National Meeting - American Society for Surface Mining and Reclamation AU - Pavlik, Monica AU - Wildeman, Thomas R AU - Emerick, John AU - Robinson, Robert A2 - Bengson, Stuart A. A2 - Bland, Douglas M. Y1 - 1999 PY - 1999 DA - 1999 SP - 563 EP - 578 PB - American Society for Surface Mining and Reclamation, [location varies] VL - 16, Vol. 2 KW - United States KW - zinc KW - iron KW - ground water KW - aluminum KW - sediments KW - alkalinity KW - pH KW - abandoned mines KW - hydrology KW - mines KW - acid mine drainage KW - pollutants KW - Animas River KW - surface water KW - pollution KW - Silverton Colorado KW - Forest Queen Wetland KW - peat KW - wetlands KW - metals KW - hydraulic conductivity KW - Colorado KW - water wells KW - point sources KW - 23:Geomorphology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52217148?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+Annual+National+Meeting+-+American+Society+for+Surface+Mining+and+Reclamation&rft.atitle=Fate+and+transport+of+metals+in+a+natural+wetland+receiving+mine+drainage&rft.au=Pavlik%2C+Monica%3BWildeman%2C+Thomas+R%3BEmerick%2C+John%3BRobinson%2C+Robert&rft.aulast=Pavlik&rft.aufirst=Monica&rft.date=1999-01-01&rft.volume=16%2C+Vol.+2&rft.issue=&rft.spage=563&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+Annual+National+Meeting+-+American+Society+for+Surface+Mining+and+Reclamation&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 16th annual National meeting of the American Society for Surface Mining and Reclamation N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Number of references - 24 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - #03219 N1 - SubjectsTermNotLitGenreText - abandoned mines; acid mine drainage; alkalinity; aluminum; Animas River; Colorado; Forest Queen Wetland; ground water; hydraulic conductivity; hydrology; iron; metals; mines; peat; pH; point sources; pollutants; pollution; sediments; Silverton Colorado; surface water; United States; water wells; wetlands; zinc ER - TY - JOUR T1 - Investigation of subsidence event over multiple seam mining area AN - 52216538; 2001-047964 AB - An investigation was performed to determine the sequence of events which caused the 1987 surface subsidence and related damage to several homes in Walker County, Alabama, USA (see Figure 1). Surface affects compared to mine maps indicated the subsidence to be mine related. However, two coal seams had been worked under this area. The upper seam, the American seam, ranged from 250 to 280 feet beneath the surface in the area in question. It was mined-out before 1955 by room-and-pillar method leaving in place narrow-long pillars to support the overburden strata, and abandoned in 1955. The lower seam, the Mary Lee seam, ranged from 650 to 700 feet beneath the surface. The Mary Lee seam had been abandoned in 1966 and subsequently became flooded. The dewatering of the Mary Lee seam workings in 1985 caused the submerged pillars to be exposed to the atmosphere. Due to multiple seam mining and the fact that workings had been inundated then dewatered, a subsurface investigation ensued to determine the sequence and ultimate cause of surface subsidence. Core sample tests with fracture analysis in conjunction with "down-the -hole" TV camera inspections provided necessary information to determine that the subsidence started in the lower seam and progressed through the upper coal seam to the surface. Evidence from the investigation program established that dewatering of the lower seam workings caused the marginally stable support pillars and the roof to collapse. This failure triggered additional subsidence in the upper seam which broadened the area of influence at the surface. JF - Proceedings of the Annual National Meeting - American Society for Surface Mining and Reclamation AU - Kohli, Kewal K A2 - Bengson, Stuart A. A2 - Bland, Douglas M. Y1 - 1999 PY - 1999 DA - 1999 SP - 472 EP - 480 PB - American Society for Surface Mining and Reclamation, [location varies] VL - 16, Vol. 2 KW - United States KW - Pennsylvanian KW - Paleozoic KW - Mary Lee Coal KW - Walker County Alabama KW - Carboniferous KW - stability KW - American Coal KW - land subsidence KW - coal seams KW - analysis KW - Alabama KW - cracks KW - pillars KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52216538?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+Annual+National+Meeting+-+American+Society+for+Surface+Mining+and+Reclamation&rft.atitle=Investigation+of+subsidence+event+over+multiple+seam+mining+area&rft.au=Kohli%2C+Kewal+K&rft.aulast=Kohli&rft.aufirst=Kewal&rft.date=1999-01-01&rft.volume=16%2C+Vol.+2&rft.issue=&rft.spage=472&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+Annual+National+Meeting+-+American+Society+for+Surface+Mining+and+Reclamation&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 16th annual National meeting of the American Society for Surface Mining and Reclamation N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Number of references - 2 N1 - Document feature - illus. incl. sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - #03219 N1 - SubjectsTermNotLitGenreText - Alabama; American Coal; analysis; Carboniferous; coal seams; cracks; land subsidence; Mary Lee Coal; Paleozoic; Pennsylvanian; pillars; stability; United States; Walker County Alabama ER - TY - JOUR T1 - Laboratory experiments designed to test the remediation properties of materials AN - 52215421; 2001-047979 AB - Passive treatment systems constructed to remediate mine drainage have proven to be very successful for a wide variety of drainage compositions and volumes. The construction of an anaerobic passive treatment system requires a mixture of local materials with the objective of producing a system that allows adequate water flow while supporting the growth of sulfate-reducing bacteria. These bacteria have the effect of reducing the oxidizing potential in the system causing many sulfide-forming metals in solution to precipitate. The focus of these experiments was the study of chemical characteristics of materials, individually and in mixtures, with the purpose of determining which would be best suited for incorporation into a treatment system. The materials of interest were manure (fresh and aged), alfalfa, limestone, and sawdust, which were all collected in close proximity to the construction site of the proposed treatment system. A variety of chemical and physical hypotheses were formulated prior to performing simple chemical characterization and anaerobic treatment tests. The hypotheses relating to the chemical nature of the single materials were carbon to nitrogen ratio, availability of low molecular weight organic acids, number of adsorption sites, and organic carbon content. In addition, hypotheses concerning the performance of mixtures were evaluated by looking at the relative amount of bacterial growth (and metal removal) seen in each mixture over a 4-week period. The results of the laboratory experiments confirmed the hypotheses, and demonstrated that in the mixtures, the anaerobic bacteria flourish when alfalfa is present, up to a point. The best mixture that allowed proliferation of bacteria while also removing metals consisted of 50% limestone, 25% aged manure, 15% sawdust, and 10% alfalfa (% by weight). JF - Proceedings of the Annual National Meeting - American Society for Surface Mining and Reclamation AU - Gilbert, J S AU - Wildeman, Thomas R AU - Ford, K L A2 - Bengson, Stuart A. A2 - Bland, Douglas M. Y1 - 1999 PY - 1999 DA - 1999 SP - 592 EP - 598 PB - American Society for Surface Mining and Reclamation, [location varies] VL - 16, Vol. 2 KW - experimental studies KW - acid mine drainage KW - pollution KW - anaerobic environment KW - testing KW - properties KW - Belle Eldridge Mine KW - bioremediation KW - pH KW - Eh KW - remediation KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52215421?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+of+the+Annual+National+Meeting+-+American+Society+for+Surface+Mining+and+Reclamation&rft.atitle=Laboratory+experiments+designed+to+test+the+remediation+properties+of+materials&rft.au=Gilbert%2C+J+S%3BWildeman%2C+Thomas+R%3BFord%2C+K+L&rft.aulast=Gilbert&rft.aufirst=J&rft.date=1999-01-01&rft.volume=16%2C+Vol.+2&rft.issue=&rft.spage=592&rft.isbn=&rft.btitle=&rft.title=Proceedings+of+the+Annual+National+Meeting+-+American+Society+for+Surface+Mining+and+Reclamation&rft.issn=&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 16th annual National meeting of the American Society for Surface Mining and Reclamation N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Number of references - 5 N1 - Document feature - illus. incl. 6 tables N1 - Last updated - 2012-06-07 N1 - CODEN - #03219 N1 - SubjectsTermNotLitGenreText - acid mine drainage; anaerobic environment; Belle Eldridge Mine; bioremediation; Eh; experimental studies; pH; pollution; properties; remediation; testing ER - TY - JOUR T1 - Geology and the all taxa biodiversity inventory; Great Smoky Mountains National Park AN - 52211065; 2001-053971 AB - A National Park Service-U. S. Geological Survey collaboration is producing a new, digital geologic map database for Great Smoky Mountains National Park (GSMNP). The database is part of a Geographic Information System that will incorporate geology, vegetation, soils, topography, cultural disturbance, transportation, and hydrography data as part of the recently initiated All Taxa Biodiversity Inventory (ATBI) of the Park. The GSMNP contains at least 13 distinctive rock types in 60 formations, about 10 distinctive surficial deposit types, numerous soil classes, more than 1,500 m of steep mountainous relief, and heavy rainfall. This ecosystem supports over 60 different natural habitat types and a multitude of gradient-specific communities. The interrelationships of geology and biology include: (1) sulfide-rich slaty rocks limit the distribution of fish and invertebrate species but support some taxa that appear to have speciated on this rock type; (2) restricted areas of limestone limit occurrences of terrestrial and aquatic mollusks; (3) soils on deeply weathered granitic gneiss support Purple spurge, a former federal candidate for endangered species; (4) boulder fields of quartzite and sandstone control distributions of rare, uncommon, and endangered plants such as Yellow wood and Bunchflower; and (5) mafic and ultramafic igneous rocks and associated soils support rare plant communities, which in turn are habitat to differing suites of fungal, protist, and animal taxa. The new maps and database are important tools to guide soil scientists and biologists involved with the ATBI to areas of the Park potentially harboring unique, rare, and possible endangered species. JF - Abstracts with Programs - Geological Society of America AU - Schultz, Art AU - Southworth, Scott AU - Chirico, Peter G AU - Rock, Janet AU - Langdon, Keith AU - Parker, Chuck AU - Anonymous Y1 - 1999 PY - 1999 DA - 1999 SP - 484 PB - Geological Society of America (GSA), Boulder, CO VL - 31 IS - 7 SN - 0016-7592, 0016-7592 KW - United States KW - terrestrial environment KW - communities KW - igneous rocks KW - granites KW - mafic composition KW - ecosystems KW - ultramafic composition KW - vegetation KW - Great Smoky Mountains KW - relief KW - Pisces KW - topography KW - plutonic rocks KW - geographic information systems KW - fungi KW - metamorphic rocks KW - Tennessee KW - Invertebrata KW - ecology KW - Mollusca KW - soils KW - hydrology KW - gneisses KW - Chordata KW - biodiversity KW - Protista KW - rainfall KW - Great Smoky Mountains National Park KW - habitat KW - inventory KW - North Carolina KW - information systems KW - Vertebrata KW - sulfides KW - aquatic environment KW - microfossils KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52211065?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Geology+and+the+all+taxa+biodiversity+inventory%3B+Great+Smoky+Mountains+National+Park&rft.au=Schultz%2C+Art%3BSouthworth%2C+Scott%3BChirico%2C+Peter+G%3BRock%2C+Janet%3BLangdon%2C+Keith%3BParker%2C+Chuck%3BAnonymous&rft.aulast=Schultz&rft.aufirst=Art&rft.date=1999-01-01&rft.volume=31&rft.issue=7&rft.spage=484&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 1999 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2001-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - aquatic environment; biodiversity; Chordata; communities; ecology; ecosystems; fungi; geographic information systems; gneisses; granites; Great Smoky Mountains; Great Smoky Mountains National Park; habitat; hydrology; igneous rocks; information systems; inventory; Invertebrata; mafic composition; metamorphic rocks; microfossils; Mollusca; North Carolina; Pisces; plutonic rocks; Protista; rainfall; relief; soils; sulfides; Tennessee; terrestrial environment; topography; ultramafic composition; United States; vegetation; Vertebrata ER - TY - JOUR T1 - Relations among welding, vapor-phase activity, crystallization, and fractures in the Tiva Canyon and Topopah Spring tuffs, at Yucca Mountain, Nevada AN - 52210919; 2001-053926 AB - Large-volume, 12.7- and 12.8-m. y.-old Tiva Canyon and Topopah Spring Tuffs in the southwestern Nevada volcanic field are almost identical in welding, vapor-phase transfer and activity, crystallization, and cooling fractures. Some zones and subzones within the tuffs contain few (or no) lithophysae; in other zones, centimeter- to decimeter-sized lithophysae occur locally in unimodal, bimodal, or seriate distributions. Lithophysae shapes vary from simple to compound (i.e. coalesced cavities), and spherical to cuspate (i.e. partially deflated cavities). Near boundaries between lithophysal and nonlithophysal zones, lithophysae aspect ratios can be as large as 20, elsewhere, they may be as small as 1 to 2, representing fully inflated cavities. Two types of cooling fractures occur in lithophysal and nonlithophysal zones and both can have vapor-phase mineral coatings. Type 1 fractures are typically long (up to 50 m), planar, and smooth, many with light-gray rinds and some have tubular structures. Tubular structures are circular to rectangular in cross section, and in the fracture plane, form parallel or anastomosing sets oriented at low angles to foliation. Type 2 fractures lack rinds and tubular structures, and are not as long, planar, or smooth as Type 1 fractures. More than 90 percent of both units are composed of densely welded, mostly crystallized tuff. Groundmass-crystallization color and texture near lithophysal-cavity rims and fracture rinds, and locally in broad, sharply bounded areas differs from crystallization color and texture occurring away from these features. Vapor-phase corrosion of glass occurred commonly in the upper parts of densely welded rocks, and locally in the top and bottom of moderately welded rocks. Vapor-phase minerals formed where corrosion occurred, in lithophysal cavities, and along many fractures. These various features constrain a sequential development of the following processes. Welding began shortly after (or during) deposition, resulting in densely welded glass throughout the deposit. During welding, intergranular vapor was transferred by flow through the matrix or along early formed (type 1) fractures. Lithophysal cavities developed where vapor attained super-lithostatic pressure. Early formed (type 1) fractures developed within the vitric phase. Tubular structures result from: 1) tension fractures along fracture faces as the rock stretched during growth of lithophysae, or 2) vapor etching during transport through the fractures. The glass matrix crystallized differently, depending on the presence or absence of vapor. Vapor-phase corrosion occurred during the period of peak temperatures, and mineralization occurred primarily during the cooling phase. Late formed (type 2) fractures formed after crystallization of the groundmass. JF - Abstracts with Programs - Geological Society of America AU - Buesch, David C AU - Beason, Steven C AU - Spengler, Richard W AU - Anonymous Y1 - 1999 PY - 1999 DA - 1999 SP - 476 EP - 477 PB - Geological Society of America (GSA), Boulder, CO VL - 31 IS - 7 SN - 0016-7592, 0016-7592 KW - United States KW - orientation KW - volcanic rocks KW - welded tuff KW - textures KW - ignimbrite KW - igneous rocks KW - matrix KW - Nye County Nevada KW - Tiva Canyon Member KW - Miocene KW - Cenozoic KW - Topopah Spring Member KW - pyroclastics KW - fractures KW - Tertiary KW - Neogene KW - cooling KW - crystallization KW - foliation KW - Yucca Mountain KW - Nevada KW - 16:Structural geology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52210919?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Relations+among+welding%2C+vapor-phase+activity%2C+crystallization%2C+and+fractures+in+the+Tiva+Canyon+and+Topopah+Spring+tuffs%2C+at+Yucca+Mountain%2C+Nevada&rft.au=Buesch%2C+David+C%3BBeason%2C+Steven+C%3BSpengler%2C+Richard+W%3BAnonymous&rft.aulast=Buesch&rft.aufirst=David&rft.date=1999-01-01&rft.volume=31&rft.issue=7&rft.spage=476&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 1999 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2001-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - Cenozoic; cooling; crystallization; foliation; fractures; igneous rocks; ignimbrite; matrix; Miocene; Neogene; Nevada; Nye County Nevada; orientation; pyroclastics; Tertiary; textures; Tiva Canyon Member; Topopah Spring Member; United States; volcanic rocks; welded tuff; Yucca Mountain ER - TY - JOUR T1 - Charcoal record in sediments and fire ecology history of pinon-juniper uplands of the Uncompahgre Uplift, western Colorado AN - 52210855; 2001-053961 AB - Geologic mapping at Colorado National Monument found abundant charcoal in thick valley fill that locally forms flat bottoms in cliff-rimmed canyons. One narrow, incised channel exposes as much as 20 m of fine sand and silt and about 50 layers that contain charcoal. Charcoal is concentrated at bedding breaks but also occurs within beds and paleosols. Eight AMS (super 14) C dates were determined for charcoal within beds or on bedding breaks, ranging from 1,280+ or -50 to 9,190+ or -50 BP (WW-1733-1736, 2071-2074). The undated lowest part of the sediments is probably late Pleistocene as a mastodon tooth was found in the streambed in the 1960s. Deposition rates are 0.6-1.3 mm/yr. The sediment source is mainly the blanket of upland eolian fine sand and silt, derived from weathered Jurassic Entrada and Wingate Sandstones. We conclude that wildfire destruction of vegetation and soils in the pinon-juniper uplands allowed rapid erosion of eolian materials that poured into the canyons where it was deposited as fine-grained alluvium. This charcoal record has the potential to increase our understanding of Holocene natural fire frequency, rates of upland erosion and alluviation, and history of debris-flow and flash-flood hazards. Fire-scars in uplands pinon-juniper forests provide only a few hundred years of fire history, but numerous pack rat middens under rock overhangs probably contain palynological records that provide vegetation records of climatic changes far into the Holocene, augmenting the use of the sedimentation and fire record. Extensive research is needed to define natural fire regimes prior to European arrival. Past sedimentation, fire, and climatic histories can be used to integrate multidisciplinary aspects of this dynamic ecosystem. Such knowledge can be used to create viable fire management plans and to maintain sustainable ecosystems. JF - Abstracts with Programs - Geological Society of America AU - Scott, Robert B AU - Hood, William C AU - Johnson, James B AU - Tausch, Robin AU - Sexton, Timothy O AU - Perrotti, Patrick AU - Anonymous Y1 - 1999 PY - 1999 DA - 1999 SP - 482 EP - 483 PB - Geological Society of America (GSA), Boulder, CO VL - 31 IS - 7 SN - 0016-7592, 0016-7592 KW - United States KW - geologic hazards KW - western Colorado KW - uplands KW - ecosystems KW - erosion rates KW - vegetation KW - debris flows KW - Holocene KW - upper Pleistocene KW - fires KW - Cenozoic KW - bedding KW - sedimentation rates KW - mass movements KW - sediments KW - floods KW - sedimentary structures KW - Uncompahgre Uplift KW - soils KW - charcoal KW - Quaternary KW - clastic sediments KW - sedimentation KW - planar bedding structures KW - Pleistocene KW - alluvium KW - Colorado KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52210855?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=Charcoal+record+in+sediments+and+fire+ecology+history+of+pinon-juniper+uplands+of+the+Uncompahgre+Uplift%2C+western+Colorado&rft.au=Scott%2C+Robert+B%3BHood%2C+William+C%3BJohnson%2C+James+B%3BTausch%2C+Robin%3BSexton%2C+Timothy+O%3BPerrotti%2C+Patrick%3BAnonymous&rft.aulast=Scott&rft.aufirst=Robert&rft.date=1999-01-01&rft.volume=31&rft.issue=7&rft.spage=482&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 1999 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2001-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - alluvium; bedding; Cenozoic; charcoal; clastic sediments; Colorado; debris flows; ecosystems; erosion rates; fires; floods; geologic hazards; Holocene; mass movements; planar bedding structures; Pleistocene; Quaternary; sedimentary structures; sedimentation; sedimentation rates; sediments; soils; Uncompahgre Uplift; United States; uplands; upper Pleistocene; vegetation; western Colorado ER - TY - JOUR T1 - U. S. Bureau of Reclamation distributed database applications AN - 52201561; 2001-059813 JF - NATO Science Series. Partnership Sub-series 2, Environmental Security AU - Osterberg, John A2 - Naff, Thomas Y1 - 1999 PY - 1999 DA - 1999 SP - 229 EP - 238 PB - Kluwer Academic Publishers, Dordrecht VL - 61 SN - 1389-1839, 1389-1839 KW - protection KW - water quality KW - programs KW - U. S. Bureau of Reclamation KW - public policy KW - government agencies KW - data processing KW - water management KW - models KW - environmental management KW - computer programs KW - data bases KW - ecology KW - applications KW - water resources KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52201561?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=NATO+Science+Series.+Partnership+Sub-series+2%2C+Environmental+Security&rft.atitle=U.+S.+Bureau+of+Reclamation+distributed+database+applications&rft.au=Osterberg%2C+John&rft.aulast=Osterberg&rft.aufirst=John&rft.date=1999-01-01&rft.volume=61&rft.issue=&rft.spage=229&rft.isbn=0792329178&rft.btitle=&rft.title=NATO+Science+Series.+Partnership+Sub-series+2%2C+Environmental+Security&rft.issn=13891839&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - NATO advanced research workshop on Data sharing for international water resource management; Eastern Europe, Russia and the CIS N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - #04396 N1 - SubjectsTermNotLitGenreText - applications; computer programs; data bases; data processing; ecology; environmental management; government agencies; models; programs; protection; public policy; U. S. Bureau of Reclamation; water management; water quality; water resources ER - TY - JOUR T1 - Structural setting of the North Ramp of the Exploratory Studies Facility AN - 52194490; 2001-065038 JF - Water-Resources Investigations - U. S. Geological Survey AU - Day, W C AU - Sweetkind, D S AU - Potter, C J AU - Beason, S C AU - Spengler, R W A2 - Rousseau, Joseph P. A2 - Kwicklis, Edward M. A2 - Gillies, Daniel C. Y1 - 1999 PY - 1999 DA - 1999 SP - 44 EP - 55 PB - U. S. Geological Survey, [Reston, VA] SN - 0092-332X, 0092-332X KW - United States KW - hydrology KW - bedrock KW - orientation KW - petrology KW - waste disposal sites KW - joints KW - surficial geology KW - Nye County Nevada KW - radioactive waste KW - geometry KW - fractures KW - style KW - tectonics KW - waste disposal KW - Yucca Mountain KW - USGS KW - Nevada KW - faults KW - fault zones KW - 16:Structural geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52194490?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Water-Resources+Investigations+-+U.+S.+Geological+Survey&rft.atitle=Structural+setting+of+the+North+Ramp+of+the+Exploratory+Studies+Facility&rft.au=Day%2C+W+C%3BSweetkind%2C+D+S%3BPotter%2C+C+J%3BBeason%2C+S+C%3BSpengler%2C+R+W&rft.aulast=Day&rft.aufirst=W&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=44&rft.isbn=&rft.btitle=&rft.title=Water-Resources+Investigations+-+U.+S.+Geological+Survey&rft.issn=0092332X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA] N1 - Document feature - illus. incl. geol. sketch maps N1 - SuppNotes - Prepared in cooperation with the U.S. Department of Energy, Nevada Operations Office N1 - Last updated - 2012-06-07 N1 - CODEN - WRIND3 N1 - SubjectsTermNotLitGenreText - bedrock; fault zones; faults; fractures; geometry; hydrology; joints; Nevada; Nye County Nevada; orientation; petrology; radioactive waste; style; surficial geology; tectonics; United States; USGS; waste disposal; waste disposal sites; Yucca Mountain ER - TY - JOUR T1 - Powder River basin coal bed methane resource assessment project; a status report AN - 52134120; 2002-025243 JF - Guidebook - Wyoming Geological Association AU - McGarry, Dwain AU - Osvald, Karl S AU - Stilwell, Cathy A2 - Miller, W. Roger Y1 - 1999 PY - 1999 DA - 1999 SP - 253 EP - 254 PB - Wyoming Geological Association, Casper, WY VL - 50 SN - 0160-2829, 0160-2829 KW - United States KW - Wyoming KW - resources KW - reserves KW - natural gas KW - coalbed methane KW - petroleum KW - production KW - Powder River basin KW - Montana KW - coal exploration KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52134120?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Guidebook+-+Wyoming+Geological+Association&rft.atitle=Powder+River+basin+coal+bed+methane+resource+assessment+project%3B+a+status+report&rft.au=McGarry%2C+Dwain%3BOsvald%2C+Karl+S%3BStilwell%2C+Cathy&rft.aulast=McGarry&rft.aufirst=Dwain&rft.date=1999-01-01&rft.volume=50&rft.issue=&rft.spage=253&rft.isbn=&rft.btitle=&rft.title=Guidebook+-+Wyoming+Geological+Association&rft.issn=01602829&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Wyoming Geological Association; fiftieth field conference guidebook N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - PubXState - WY N1 - Last updated - 2012-06-07 N1 - CODEN - WGGCAG N1 - SubjectsTermNotLitGenreText - coal exploration; coalbed methane; Montana; natural gas; petroleum; Powder River basin; production; reserves; resources; United States; Wyoming ER - TY - JOUR T1 - Hydrogeology and ecology of clinker in the Powder River basin, Wyoming and Montana AN - 52131905; 2002-025242 AB - Over the past few million years, thick Tertiary coal beds in the Powder River Basin of northeast Wyoming and southeast Montana have burned naturally. The coal fires have collapsed and baked the overlying strata to produce clinker--a suite of hard, reddish to black, highly fractured, thermally metamorphosed rocks. This clinker, as thick as 200 feet, shapes and colors much of the landscape of the basin. Being more erosion resistant than unbaked strata, clinker persists during downcutting to form caprock on hills and buttes. The broken topography of clinker hills and escarpments has created a unique set of ecologic niches that protect plants and animals from the weather extremes of the open plains. Well drained soils and water at depth encourage species such as ponderosa pine and skunkbush sumac to colonize areas of clinker. High permeability and infiltration rates enable the 1600 square miles of clinker in the basin to store large amounts of water from rainfall and snowmelt, and protect it from evaporation. These unconfined clinker aquifers have very high transmissivity and storativity values. Peak flows in clinker-dominated drainages are attenuated, and water is discharged gradually to streams during periods of lower flow. Springs which emerge from the base of clinker form the headwaters of several perennial streams and provide wetland habitat for many species. In the Rochelle Hills of Wyoming, groundwater from clinker recharges coal, overburden, and spoil aquifers downdip to the west. Some mines encounter inflow from large saturated clinker bodies updip, where water is dammed against the face of the less permeable coal. Groundwater quality in clinker varies widely; quality appears better in well-drained areas where soluble ash at the base of the clinker has dissolved away, and poorer where water has ponded along a coal contact. JF - Guidebook - Wyoming Geological Association AU - Heffern, Edward L AU - Coates, A A2 - Miller, W. Roger Y1 - 1999 PY - 1999 DA - 1999 SP - 231 EP - 252 PB - Wyoming Geological Association, Casper, WY VL - 50 SN - 0160-2829, 0160-2829 KW - United States KW - hydrology KW - ecosystems KW - thermal metamorphism KW - storage coefficient KW - water balance KW - metamorphism KW - Montana KW - ground water KW - clinker KW - Wyoming KW - recharge KW - natural recharge KW - sedimentary rocks KW - transmissivity KW - coal KW - metamorphic rocks KW - ecology KW - water wells KW - Powder River basin KW - permeability KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52131905?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Guidebook+-+Wyoming+Geological+Association&rft.atitle=Hydrogeology+and+ecology+of+clinker+in+the+Powder+River+basin%2C+Wyoming+and+Montana&rft.au=Heffern%2C+Edward+L%3BCoates%2C+A&rft.aulast=Heffern&rft.aufirst=Edward&rft.date=1999-01-01&rft.volume=50&rft.issue=&rft.spage=231&rft.isbn=&rft.btitle=&rft.title=Guidebook+-+Wyoming+Geological+Association&rft.issn=01602829&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Wyoming Geological Association; fiftieth field conference guidebook N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 43 N1 - PubXState - WY N1 - Document feature - illus. incl. sects. N1 - Last updated - 2012-06-07 N1 - CODEN - WGGCAG N1 - SubjectsTermNotLitGenreText - clinker; coal; ecology; ecosystems; ground water; hydrology; metamorphic rocks; metamorphism; Montana; natural recharge; permeability; Powder River basin; recharge; sedimentary rocks; storage coefficient; thermal metamorphism; transmissivity; United States; water balance; water wells; Wyoming ER - TY - JOUR T1 - Origin and geomorphology of clinker in the Powder River basin, Wyoming and Montana AN - 52130505; 2002-025241 AB - The natural burning of Tertiary coal beds in the Powder River Basin (PRB) has consumed billions of tons of coal and has thermally altered the overlying bedrock. This metamorphosed rock, known as clinker, presently covers about 1600 mi (super 2) in the PRB-1100 mi (super 2) in Montana and 500 mi (super 2) in Wyoming. Much additional clinker has been eroded away. A wide variety of clinker rock types is produced, depending on lithology of the parent rock, temperature and duration of heating, and degree of oxidation. Clinker ranges from slightly yellowed and hardened strata through brick-like fired and sintered rock to black vesicular paralava. Coal bed fires are ignited primarily by range fires and spontaneous combustion on outcrops that are above water table. During regional lowering of the land surface by erosion, the water table also drops, making progressively lower coal susceptible to burning. Episodes of burning have occurred over the past several million years as erosion has exposed coal through downcutting and hillslope retreat. Being more erosion-resistant than unbaked bedrock, clinker forms caprock throughout the basin. The oldest clinker in place generally caps the highest buttes and plateaus. Detrital zircon fission-track ages as great as 2.8+ or -0.6 my from clinker in place, and as great as 4.0+ or -0.7 my from a clinker boulder in a stream terrace gravel, provide a tool to help decipher late Tertiary and Quaternary rates of downcutting by streams in the PRB. The ages indicate that much of the downcutting in the present day Tongue River valley occurred during Quaternary time. JF - Guidebook - Wyoming Geological Association AU - Coates, Donald A AU - Leffern, Edward L A2 - Miller, W. Roger Y1 - 1999 PY - 1999 DA - 1999 SP - 211 EP - 230 PB - Wyoming Geological Association, Casper, WY VL - 50 SN - 0160-2829, 0160-2829 KW - United States KW - Quaternary KW - Tongue River valley KW - thermal metamorphism KW - erosion features KW - metamorphism KW - Montana KW - fires KW - clinker KW - Cenozoic KW - Wyoming KW - Tertiary KW - upper Tertiary KW - sedimentary rocks KW - coal KW - metamorphic rocks KW - cap rocks KW - geomorphology KW - Powder River basin KW - 23:Geomorphology KW - 05A:Igneous and metamorphic petrology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52130505?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Guidebook+-+Wyoming+Geological+Association&rft.atitle=Origin+and+geomorphology+of+clinker+in+the+Powder+River+basin%2C+Wyoming+and+Montana&rft.au=Coates%2C+Donald+A%3BLeffern%2C+Edward+L&rft.aulast=Coates&rft.aufirst=Donald&rft.date=1999-01-01&rft.volume=50&rft.issue=&rft.spage=211&rft.isbn=&rft.btitle=&rft.title=Guidebook+-+Wyoming+Geological+Association&rft.issn=01602829&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Wyoming Geological Association; fiftieth field conference guidebook N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 65 N1 - PubXState - WY N1 - Last updated - 2012-06-07 N1 - CODEN - WGGCAG N1 - SubjectsTermNotLitGenreText - cap rocks; Cenozoic; clinker; coal; erosion features; fires; geomorphology; metamorphic rocks; metamorphism; Montana; Powder River basin; Quaternary; sedimentary rocks; Tertiary; thermal metamorphism; Tongue River valley; United States; upper Tertiary; Wyoming ER - TY - JOUR T1 - Younger Tertiary (late Eocene-early Pliocene) stratigraphic succession and geologic history of the Western United States; 1, The High Plains classical area AN - 52130465; 2002-025240 AB - This report is a review for the non-specialist geologist of current knowledge of the post-Eocene continental Tertiary deposits of the western United States. The area covered extends from the High Plains geomorphic province westward to include the Rocky Mountains and the Great Basin. The subject is presented in two parts, of which this is the first. This first part traces the history of geological exploration of the High Plains from its inception in the 1860's to the present. Historically, the emphasis of study has been in the specialized field of vertebrate (especially mammalian) paleontology. It was in the classical area of western Nebraska and adjoining regions that much of the modem chronostratigraphic classification of the Middle Tertiary, the North American Land Mammal Ages, (NALMA) was developed and extended elsewhere. The relationship of the NALMA to the rock stratigraphic section of this province is described from an historical perspective and is reviewed critically in terms of proper application of widely accepted rules of stratigraphic nomenclature. Much of the lithostratigraphic terminology that has been used in this province appears flawed in a technical nomenclature sense. These apparent flaws are treated at length and remedies are suggested. As a case in point, the name Ogallala Formation (or Group) lacks validity and it is recommended that it be replaced with its senior synonym Ash Hollow Formation. There is no acceptable scientific defense for retaining current usage. The mid-Tertiary lithostratigraphic units lend themselves to a tripartite grouping: These consist of. (1) a lower unit characterized by several formations of relatively broad areal extent which consist of loessic deposits having a very high volcaniclastic composition and includes the White River and Arikaree Groups; (2) a middle grouping of formations (Runningwater, Box Butte, Sheep Creek, Olcott, Sand Canyon and Valentine) which occur as a complex of elongate, narrow stream channel deposits which have only a minor tuffaceous content; and (3) a thin but very extensive deposit of typically sandy and gravelly fluvial beds of the Ash Hollow Formation. JF - Guidebook - Wyoming Geological Association AU - Boyd, Harold A A2 - Miller, W. Roger Y1 - 1999 PY - 1999 DA - 1999 SP - 167 EP - 210 PB - Wyoming Geological Association, Casper, WY VL - 50 SN - 0160-2829, 0160-2829 KW - United States KW - North America KW - lithostratigraphy KW - Basin and Range Province KW - Eocene KW - chronostratigraphy KW - Great Basin KW - Paleogene KW - Cenozoic KW - Tertiary KW - lower Pliocene KW - Western U.S. KW - upper Eocene KW - Neogene KW - Pliocene KW - Great Plains KW - Rocky Mountains KW - 12:Stratigraphy UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52130465?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Guidebook+-+Wyoming+Geological+Association&rft.atitle=Younger+Tertiary+%28late+Eocene-early+Pliocene%29+stratigraphic+succession+and+geologic+history+of+the+Western+United+States%3B+1%2C+The+High+Plains+classical+area&rft.au=Boyd%2C+Harold+A&rft.aulast=Boyd&rft.aufirst=Harold&rft.date=1999-01-01&rft.volume=50&rft.issue=&rft.spage=167&rft.isbn=&rft.btitle=&rft.title=Guidebook+-+Wyoming+Geological+Association&rft.issn=01602829&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Wyoming Geological Association; fiftieth field conference guidebook N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 45 N1 - PubXState - WY N1 - Document feature - illus. incl. sects., strat. cols., geol. sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - WGGCAG N1 - SubjectsTermNotLitGenreText - Basin and Range Province; Cenozoic; chronostratigraphy; Eocene; Great Basin; Great Plains; lithostratigraphy; lower Pliocene; Neogene; North America; Paleogene; Pliocene; Rocky Mountains; Tertiary; United States; upper Eocene; Western U.S. ER - TY - JOUR T1 - General draw-down map; Wyodak/Anderson coal bed, 1980 to 1998 AN - 52130293; 2002-025234 JF - Guidebook - Wyoming Geological Association AU - Meyer, Joe A2 - Miller, W. Roger Y1 - 1999 PY - 1999 DA - 1999 SP - 87 EP - 88 PB - Wyoming Geological Association, Casper, WY VL - 50 SN - 0160-2829, 0160-2829 KW - United States KW - Wyoming KW - Wyodak-Anderson coal field KW - natural gas KW - coalbed methane KW - petroleum KW - mapping KW - oil-water interface KW - coal seams KW - Powder River basin KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52130293?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Guidebook+-+Wyoming+Geological+Association&rft.atitle=General+draw-down+map%3B+Wyodak%2FAnderson+coal+bed%2C+1980+to+1998&rft.au=Meyer%2C+Joe&rft.aulast=Meyer&rft.aufirst=Joe&rft.date=1999-01-01&rft.volume=50&rft.issue=&rft.spage=87&rft.isbn=&rft.btitle=&rft.title=Guidebook+-+Wyoming+Geological+Association&rft.issn=01602829&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Wyoming Geological Association; fiftieth field conference guidebook N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - PubXState - WY N1 - Last updated - 2012-06-07 N1 - CODEN - WGGCAG N1 - SubjectsTermNotLitGenreText - coal seams; coalbed methane; mapping; natural gas; oil-water interface; petroleum; Powder River basin; United States; Wyodak-Anderson coal field; Wyoming ER - TY - JOUR T1 - Summary of federal oil and gas leasing in the Powder River basin, Wyoming, 1990-1999 AN - 52130257; 2002-025232 JF - Guidebook - Wyoming Geological Association AU - Crockett, Frederick J A2 - Miller, W. Roger Y1 - 1999 PY - 1999 DA - 1999 SP - 73 EP - 82 PB - Wyoming Geological Association, Casper, WY VL - 50 SN - 0160-2829, 0160-2829 KW - United States KW - land leases KW - Wyoming KW - natural gas KW - coalbed methane KW - petroleum KW - public lands KW - production KW - Powder River basin KW - 29A:Economic geology, geology of energy sources UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52130257?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Guidebook+-+Wyoming+Geological+Association&rft.atitle=Summary+of+federal+oil+and+gas+leasing+in+the+Powder+River+basin%2C+Wyoming%2C+1990-1999&rft.au=Crockett%2C+Frederick+J&rft.aulast=Crockett&rft.aufirst=Frederick&rft.date=1999-01-01&rft.volume=50&rft.issue=&rft.spage=73&rft.isbn=&rft.btitle=&rft.title=Guidebook+-+Wyoming+Geological+Association&rft.issn=01602829&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Wyoming Geological Association; fiftieth field conference guidebook N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 13 N1 - PubXState - WY N1 - Document feature - illus. incl. geol. sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - WGGCAG N1 - SubjectsTermNotLitGenreText - coalbed methane; land leases; natural gas; petroleum; Powder River basin; production; public lands; United States; Wyoming ER - TY - JOUR T1 - Fault slip and seismicity induced by subsurface fluid withdrawal AN - 52129270; 2002-026789 AB - It is well known that depleting a hydrocarbon reservoir can redistribute the in-situ stresses sufficiently to reactivate and induce slip in nearby faults, which otherwise usually evolve over geologic periods. In this paper, we develop a method to calculate the redistributed stresses around a depleted, heterogeneous reservoir with non-uniform pressure distribution. Using this method, we analyze the stability of nearby faults and show that different reservoir depletion strategies can affect the fault stability differently. The reservoir is modeled as a thin poroelastic inclusion in an elastic matrix while the fault gouge obeys Mohr-Coulomb failure criterion. The developed method allows considering the reservoirs and faults to be of arbitrary shapes and material properties while the pressure inside the reservoir does not have to be uniform. After the fault is reactivated, it is modeled as a shear (mode II) fracture. Displacement discontinuity between the sides of this fracture gives an estimate of the fault slip magnitude. JF - Proceedings - Symposium on Rock Mechanics AU - Germanovich, Leonid N AU - Chanpura, Rajesh A AU - Ring, Lev M A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1145 EP - 1154 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - in situ KW - geologic hazards KW - stress KW - mathematical models KW - land subsidence KW - strike-slip faults KW - porosity KW - rock mechanics KW - reservoir rocks KW - discontinuities KW - seismicity KW - shear KW - permeability KW - faults KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52129270?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Fault+slip+and+seismicity+induced+by+subsurface+fluid+withdrawal&rft.au=Germanovich%2C+Leonid+N%3BChanpura%2C+Rajesh+A%3BRing%2C+Lev+M&rft.aulast=Germanovich&rft.aufirst=Leonid&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1145&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 32 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - discontinuities; faults; geologic hazards; in situ; land subsidence; mathematical models; permeability; porosity; reservoir rocks; rock mechanics; seismicity; shear; stress; strike-slip faults ER - TY - JOUR T1 - Geotechnical factors influencing stability in a nuclear waste repository in salt AN - 52129212; 2002-026776 AB - The Waste Isolation Pilot Plant (WIPP) is intended to be an underground repository for the permanent disposal of transuranic radioactive waste generated by defense activities. Project architects developed structural designs consisting of 30-by 90-m pillars in a seven-entry waste panel system using 10-m-wide rooms. It was assumed that the pillars would experience creep deformation and enclose the waste packages gradually without significant fracturing. However, there has been a significant amount of fracturing in the mine roof and floor, and approximately 6 years after excavation, the pillars have begun to deviate from steady-state creep deformation. Based on a review of deformation data from 121 instrument clusters, multiple regression analyses, and observations of ground behavior since 1993, the authors identified factors influencing structural stability. These factors are (1) entry geometry, (2) extraction ratio within panels and in-panel pillar behavior, (3) sequence of excavation and load transfer between adjacent panels, (4) support density, and (5) ae of excavations. JF - Proceedings - Symposium on Rock Mechanics AU - Maleki, H AU - Chaturvedi, L A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1043 EP - 1049 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - Eddy County New Mexico KW - site exploration KW - roof control KW - waste disposal sites KW - stability KW - New Mexico KW - fracturing KW - deformation KW - excavations KW - rock mechanics KW - radioactive waste KW - creep KW - ground motion KW - Waste Isolation Pilot Plant KW - waste disposal KW - earthquakes KW - underground disposal KW - pillars KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52129212?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Geotechnical+factors+influencing+stability+in+a+nuclear+waste+repository+in+salt&rft.au=Maleki%2C+H%3BChaturvedi%2C+L&rft.aulast=Maleki&rft.aufirst=H&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1043&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 15 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - creep; deformation; earthquakes; Eddy County New Mexico; excavations; fracturing; ground motion; New Mexico; pillars; radioactive waste; rock mechanics; roof control; site exploration; stability; underground disposal; United States; waste disposal; waste disposal sites; Waste Isolation Pilot Plant ER - TY - JOUR T1 - A study of acoustic emission in drilling applications AN - 52129176; 2002-026769 AB - This paper presents the work to investigate the feasibility of using AI-based acoustic emission technology to monitor bit-wear during drilling process. Field drilling experiments were carried out on two different rock formations, namely, Southwick Sandstone and Chicopee Shale. Regular carbide rotary drill bits with three different conditions (new, worn and bearing failure) were used, providing several well-defined drilling situations. Acoustic emission (AE) were monitored during the drilling and then characterized. Analysis on the AE signals showed that significant differences in AE properties can be found among different drilling situations such as: new bit, worn bit, etc.; and that these differences may be identified by pattern recognition techniques. JF - Proceedings - Symposium on Rock Mechanics AU - Sun, Xiaoqing A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 983 EP - 990 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - monitoring KW - site exploration KW - Chicopee Shale KW - sandstone KW - mechanical properties KW - Connecticut River KW - uniaxial tests KW - rock mechanics KW - artificial intelligence KW - sedimentary rocks KW - claystone KW - New England KW - applications KW - Southwick Sandstone KW - drilling KW - clastic rocks KW - acoustical emissions KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52129176?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=A+study+of+acoustic+emission+in+drilling+applications&rft.au=Sun%2C+Xiaoqing&rft.aulast=Sun&rft.aufirst=Xiaoqing&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=983&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 6 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - acoustical emissions; applications; artificial intelligence; Chicopee Shale; clastic rocks; claystone; Connecticut River; drilling; mechanical properties; monitoring; New England; rock mechanics; sandstone; sedimentary rocks; site exploration; Southwick Sandstone; uniaxial tests; United States ER - TY - JOUR T1 - Structural and geophysical investigations of the EDZ (excavation disturbed zone) in indurated argillaceous media; the tunnel and the galleries of the IPSN Tournemire site, France AN - 52129134; 2002-026766 AB - The Institute of Protection and Nuclear Safety (IPSN) selected the Tournemire site (Aveyron-France) in order to study the confining properties of an argillaceous media. The studies to date have concentrated on the fluid transfer processes, the containment properties of the media and the properties of the Excavation Disturbed Zone (EDZ) related to the gallery excavation. The Tournemire site is characterized by a sub-horizontal indurated argillaceous layer, with a 250 m thickness of Jurassic argillites and marls. This series is located between two limestone aquifers. The Tournemire site has been affected by several past tectonic events, the Pyrenean compressional event being the predominant event. Several faults and fractures affect this indurated argillaceous media and this structural pattern allows us to analyze the fluid transfer along these discontinuities. A 2-km-long, 100 year old, railway tunnel gives access to this argillaceous layer. Recently (1996) two galleries 30 meters long have been excavated perpendicular to and in the middle of the old tunnel. This geotechnical context allows us to compare the EDZ in a century old tunnel (6 m height) with the EDZ in the recently excavated galleries (3, 7 m height). This paper presents the geological and tectonic setting of the Tournemire site. The characteristics of the argillaceous media are described in detail. The fracturation associated with the tunnel and the gallery excavations are studied from a structural point of view. Finally, results from initial geophysical investigations are presented. These were carried out to investigate the feasibility of using seismic methods to study the properties and behaviour of these argillaceous rocks. Experiments carried out both on samples in the laboratory and in situ (acoustic emission monitoring and characterization of the EDZ) are described. JF - Proceedings - Symposium on Rock Mechanics AU - Cabrera, J AU - Volant, P AU - Baker, C AU - Pettitt, W AU - Young, R Paul A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 957 EP - 964 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - argillite KW - Western Europe KW - textures KW - site exploration KW - Europe KW - infiltration galleries KW - excavations KW - porosity KW - Mesozoic KW - rock mechanics KW - radioactive waste KW - France KW - sedimentary rocks KW - Tournemire France KW - tunnels KW - waste disposal KW - clastic rocks KW - Aveyron France KW - acoustical emissions KW - underground disposal KW - permeability KW - argillaceous texture KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52129134?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Structural+and+geophysical+investigations+of+the+EDZ+%28excavation+disturbed+zone%29+in+indurated+argillaceous+media%3B+the+tunnel+and+the+galleries+of+the+IPSN+Tournemire+site%2C+France&rft.au=Cabrera%2C+J%3BVolant%2C+P%3BBaker%2C+C%3BPettitt%2C+W%3BYoung%2C+R+Paul&rft.aulast=Cabrera&rft.aufirst=J&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=957&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 8 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - acoustical emissions; argillaceous texture; argillite; Aveyron France; clastic rocks; Europe; excavations; France; infiltration galleries; Mesozoic; permeability; porosity; radioactive waste; rock mechanics; sedimentary rocks; site exploration; textures; Tournemire France; tunnels; underground disposal; waste disposal; Western Europe ER - TY - JOUR T1 - Monitoring an experimental tunnel seal in granite using acoustic emission and ultrasonic velocity AN - 52129079; 2002-026755 AB - Microseismic (MS) and Acoustic Emission (AE) monitoring is being carried out as part of the Tunnel Sealing Experiment (TSX) at the 420 m level of Atomic Energy of Canada's Underground Research Laboratory (URL). A 40 m long tunnel was excavated in the direction of the maximum in situ stress, with approximate dimensions of 4.4 m horizontally and 3.5 m vertically. These two dimensions were chosen to reduce the magnitude of the high stress concentrations, which occur in the roof and floor of sub-horizontal tunnels at the URL. Two bulkheads have been constructed and keyed into the tunnel to create a chamber in granite, which can be pressurised to ambient pore pressure (4 MPa). This paper presents the results of the AE/MS monitoring of the excavation phase of the TSX and the velocity interferometry measurements taken to monitor the time-dependent development of the excavation disturbance zone (EDZ). The results support stress modelling predictions and show that induced microcracking is limited to within a 0-2 m shell around the excavations. JF - Proceedings - Symposium on Rock Mechanics AU - Young, R Paul AU - Collins, David S A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 869 EP - 876 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - monitoring KW - in situ KW - bentonite KW - microseismic methods KW - igneous rocks KW - granites KW - stress KW - ultrasonic methods KW - concrete KW - sedimentary rocks KW - plutonic rocks KW - tunnels KW - clastic rocks KW - acoustical emissions KW - construction materials KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52129079?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Monitoring+an+experimental+tunnel+seal+in+granite+using+acoustic+emission+and+ultrasonic+velocity&rft.au=Young%2C+R+Paul%3BCollins%2C+David+S&rft.aulast=Young&rft.aufirst=R&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=869&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 8 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - acoustical emissions; bentonite; clastic rocks; concrete; construction materials; granites; igneous rocks; in situ; microseismic methods; monitoring; plutonic rocks; sedimentary rocks; stress; tunnels; ultrasonic methods ER - TY - JOUR T1 - Effect of confinement on the bursting of thick-walled rock cylinders under internal pressure AN - 52129047; 2002-026784 AB - An analytical, quasi-static, solution of the problem of bursting of confined and unconfined thick-walled rock cylinders, published earlier by the senior author, is compared in this paper with the solution of the same problem based on the linear elastic fracture mechanics (LEFM) approach. The proposed LEFM solution uses Finite Element Method (FEM) and covers cylinders containing a finite number of radial cracks ranging between 2 and 500 and analytical solution for infinite number of internal radial cracks. When the number of cracks exceeds about 100, the LEFM solution shows that the results differ very little from the previously proposed quasi-static solution, which assumed an infinite number of internal radial cracks in the cylinder. An analytical expression is found for the stress intensity factor for mode I K (sub I) , the strain energy release rate G and the strain energy U, using the infinite approximation for the stress and strain. For a number of cracks over 100 the analytical approximation for the K (sub I) , G and U gives an excellent results. The results for the bursting pressure are found to agree favorably with those obtained in three independent experimental investigations. JF - Proceedings - Symposium on Rock Mechanics AU - Ladanyi, B AU - Degue, K M A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1109 EP - 1116 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - finite element analysis KW - elasticity KW - cracks KW - geologic hazards KW - rock bursts KW - stress KW - statistical analysis KW - load pressure KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52129047?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Effect+of+confinement+on+the+bursting+of+thick-walled+rock+cylinders+under+internal+pressure&rft.au=Ladanyi%2C+B%3BDegue%2C+K+M&rft.aulast=Ladanyi&rft.aufirst=B&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1109&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 20 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - cracks; elasticity; finite element analysis; geologic hazards; load pressure; rock bursts; rock mechanics; statistical analysis; stress ER - TY - JOUR T1 - Cross-well air-injection packer tests for the assessment of pneumatic connectivity in fractured, unsaturated basalt AN - 52129019; 2002-026752 AB - Cross-borehole air-injection interference tests were conducted at the Box Canyon site near the Idaho National Engineering and Environmental Laboratory in order to assess the pneumatic connectivity of unsaturated fractured basalt, and determine zones of preferential flow. Data analysis of observed pressure buildups in injection and monitoring wells indicates non-linear flow behavior including pore-fluid redistribution and inertial flow, as well as the presence of constant pressure boundaries. A method for visualization of cross-well pressure connectivity was developed which reveals good connection within individual lava-flow units, but poor pressure response across rubble zones separating lava-flow units. JF - Proceedings - Symposium on Rock Mechanics AU - Benito, Pascual H AU - Cook, Paul J AU - Faybishenko, Boris AU - Freifeld, Barry AU - Doughty, Christine A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 843 EP - 850 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - Idaho KW - hydraulics KW - volcanic rocks KW - Quaternary KW - igneous rocks KW - unsteady flow KW - unsaturated zone KW - preferential flow KW - hydraulic pressure KW - Box Canyon KW - Cenozoic KW - visualization KW - fractures KW - basalts KW - Snake River plain KW - 30:Engineering geology KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52129019?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Cross-well+air-injection+packer+tests+for+the+assessment+of+pneumatic+connectivity+in+fractured%2C+unsaturated+basalt&rft.au=Benito%2C+Pascual+H%3BCook%2C+Paul+J%3BFaybishenko%2C+Boris%3BFreifeld%2C+Barry%3BDoughty%2C+Christine&rft.aulast=Benito&rft.aufirst=Pascual&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=843&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 11 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - basalts; Box Canyon; Cenozoic; fractures; hydraulic pressure; hydraulics; Idaho; igneous rocks; preferential flow; Quaternary; Snake River plain; United States; unsaturated zone; unsteady flow; visualization; volcanic rocks ER - TY - JOUR T1 - Hydrogeologic structure of the Newark Basin, Pennsylvania, from borehole geophysical logs AN - 52129015; 2002-026764 AB - The Brunswick and the underlying Lockatong Formations are comprised of lithified Mesozoic sediments that constitute part of the Newark Basin in southeastern Pennsylvania (USA). These fractured rocks form an important regional aquifer that consists of gradational sequences of shale, siltstone, and sandstone, with fluid transport occurring primarily in fractures. An extensive suite of geophysical logs was obtained in seven wells located at the borough of Lansdale, PA in order to characterize the areal hydrogeologic system. Analyses of these data indicate that the aquifer can be separated into two distinct structural domains which may, in turn, reflect different mechanical responses to basin extension: (1) In the shallow zone above 125 m, the dominant fracture population consists of gently dipping bedding-plane partings that strike N46 degrees E and dip to the NW at about 11 degrees . Fluid flow is concentrated within the upper 80 m and transmissivities rapidly diminish in magnitude with depth. (2) The zone below 125 m marks the appearance of numerous steeply dipping fractures that are orthogonal to the bedding plane features, striking subparallel at N227 degrees E but dipping sharply to the SE at 77 degrees . This secondary set of fractures is associated with a reasonably thick ( nearly equal 60 m) high-resistivity, low-transmissivity sandstone/siltstone unit that is abruptly terminated by a thin shale bed at a depth of 190 m. This lower contact effectively delineates the aquifer's vertical extent and the observed lack of hydraulic productivity with increasing depth may be associated with the gradational transition into the Lockatong Formation. JF - Proceedings - Symposium on Rock Mechanics AU - Morin, R H AU - Senior, L A AU - Decker, E R A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 941 EP - 948 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - fractured materials KW - hydraulics KW - site exploration KW - well-logging KW - sandstone KW - Brunswick Formation KW - sedimentary rocks KW - Triassic KW - siltstone KW - Upper Triassic KW - temperature logging KW - electrical logging KW - Newark Basin KW - Mesozoic KW - flows KW - physical properties KW - Lansdale Pennsylvania KW - Lockatong Formation KW - boreholes KW - hydraulic conductivity KW - Pennsylvania KW - clastic rocks KW - field studies KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52129015?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Hydrogeologic+structure+of+the+Newark+Basin%2C+Pennsylvania%2C+from+borehole+geophysical+logs&rft.au=Morin%2C+R+H%3BSenior%2C+L+A%3BDecker%2C+E+R&rft.aulast=Morin&rft.aufirst=R&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=941&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 23 N1 - Document feature - illus. incl. 1 table, geol. sketch maps N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - boreholes; Brunswick Formation; clastic rocks; electrical logging; field studies; flows; fractured materials; hydraulic conductivity; hydraulics; Lansdale Pennsylvania; Lockatong Formation; Mesozoic; Newark Basin; Pennsylvania; physical properties; sandstone; sedimentary rocks; siltstone; site exploration; temperature logging; Triassic; United States; Upper Triassic; well-logging ER - TY - JOUR T1 - Stress measurements in mine pillars using the RPR method AN - 52129005; 2002-026793 AB - Stress measurements in two pillars have been performed at Noranda's Gaspe mine in order to evaluate the load they support so optimal ore recovery could be achieved by reducing their cross section. The paper describes the advantages of the stress measurement and calculation methods used for the project. The modified doorstopper technique was found to be well suited to obtain accurate results with a minimum of unverified hypotheses at a relatively low cost. A total of ten measurements in two pillars were done in less than three days and led to results that are compared to stresses obtained from a 3D numerical analysis using the MAP3D boundary element code. JF - Proceedings - Symposium on Rock Mechanics AU - Corthesy, R AU - Leite, M H AU - Gill, D E AU - Basque, J P AU - Coulson, A L A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1181 EP - 1188 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - mining KW - underground mining KW - roof control KW - Quebec KW - numerical analysis KW - stress KW - elastic constants KW - eastern Quebec KW - rock mechanics KW - measurement KW - Canada KW - Gaspe Mine KW - mining geology KW - Eastern Canada KW - Young's modulus KW - pillars KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52129005?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Stress+measurements+in+mine+pillars+using+the+RPR+method&rft.au=Corthesy%2C+R%3BLeite%2C+M+H%3BGill%2C+D+E%3BBasque%2C+J+P%3BCoulson%2C+A+L&rft.aulast=Corthesy&rft.aufirst=R&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1181&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 4 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Canada; Eastern Canada; eastern Quebec; elastic constants; Gaspe Mine; measurement; mining; mining geology; numerical analysis; pillars; Quebec; rock mechanics; roof control; stress; underground mining; Young's modulus ER - TY - JOUR T1 - Thin spray-on linings for rock failure stabilization AN - 52128973; 2002-026723 AB - Innovative ground support agents, in the form of membrane covers, have been developed in Canada and tested internationally for the purpose of partially replacing the screen component of bolts-and-screen or thin shotcrete layers in mines. One polyurethane-based, spray-on rock lining material, designated Mineguard (super TM) , has been developed and tested primarily for use in underground hard rock mines for provision of rapidly-deployable area support coverage. Information is presented which summarizes assessment trials of the pre-and post-yield characteristics of rock and concrete materials subjected to large deformations when tested uncoated and coated using varying layer thicknesses of Mineguard (super TM) . Tests were conducted for the purpose of assessing the capabilities of thin support liners to enhance the ultimate strength of rock materials, to stabilize uncontrolled, post-yield deformation behaviour and to enhance strain energy storage capacities of failing rock mass structures. In these laboratory trials, Mineguard (super TM) surface coatings, at thicknesses of 1 to 3 mm, have been shown to beneficially enhance rock strength and other physical properties in medium to strong rock materials. Additional information, obtained from selected mine sites, is presented to validate the significant potential that such surface reinforcement agents have shown in terms of ground support capability. Experience gained by mine operators who are currently investigating the high speed application of Mineguard (super TM) coatings, and comparison of wide-ranging laboratory response tests, indicate that this or other forms of flexible, spray-on, membrane support coverings may be able to add to or replace components of current support technologies that are required for mining safely in hard rock environments. JF - Proceedings - Symposium on Rock Mechanics AU - Archibald, J F AU - Lausch, P A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 617 EP - 624 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - mining KW - failures KW - experimental studies KW - linear materials KW - geologic hazards KW - underground mining KW - stability KW - excavations KW - rock mechanics KW - laboratory studies KW - fractures KW - physical properties KW - mining geology KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128973?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Thin+spray-on+linings+for+rock+failure+stabilization&rft.au=Archibald%2C+J+F%3BLausch%2C+P&rft.aulast=Archibald&rft.aufirst=J&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=617&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 5 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - excavations; experimental studies; failures; fractures; geologic hazards; laboratory studies; linear materials; mining; mining geology; physical properties; rock mechanics; stability; underground mining ER - TY - JOUR T1 - A 3D numerical modeling of damage extension around an underground excavation; effect of cut-off keys in bulkhead design AN - 52128958; 2002-026758 AB - This paper presents a numerical modeling of damage extension around a keyed underground excavation using a continuous damage model. In the 3-dimensionnal code, FLAC (super 3D) , we have implemented an anisotropic damage model. Triaxial compression tests provide a verification of the implementation with a good agreement between experiments and predictions. The applicability of the implemented model to predict damaged zone around a keyed tunnel of AECL's Mine by experience is examined. Results indicate that a square key is best to interrupt the continuity of damage zones around the keyed tunnel than the triangular or trapezoidal keys. JF - Proceedings - Symposium on Rock Mechanics AU - Souley, M AU - Homand, F AU - Chibout, M AU - Chandler, N A A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 893 EP - 900 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - numerical models KW - three-dimensional models KW - Pinawa Manitoba KW - Manitoba KW - excavations KW - triaxial tests KW - Underground Research Laboratory KW - cracks KW - Canada KW - brittle materials KW - tunnels KW - Western Canada KW - Lac du Bonnet Batholith KW - anisotropy KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128958?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=A+3D+numerical+modeling+of+damage+extension+around+an+underground+excavation%3B+effect+of+cut-off+keys+in+bulkhead+design&rft.au=Souley%2C+M%3BHomand%2C+F%3BChibout%2C+M%3BChandler%2C+N+A&rft.aulast=Souley&rft.aufirst=M&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=893&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 14 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - anisotropy; brittle materials; Canada; cracks; excavations; Lac du Bonnet Batholith; Manitoba; numerical models; Pinawa Manitoba; three-dimensional models; triaxial tests; tunnels; Underground Research Laboratory; Western Canada ER - TY - JOUR T1 - Numerical studies of time-dependent failure and implications for the prediction of time to failure AN - 52128947; 2002-026760 AB - A displacement discontinuity model is described for simulating time-dependent failure in a random assembly of crack elements. It is shown that the slip relaxation parameter must be scaled in proportion to the crack length if the relaxation time function is to be self-similar for all element sizes. Equivalence between the assumed slip rate law, in which the slip rate is proportional to the driving shear stress, and an exponential decay of cohesion is shown to be possible for particular choices of the loading stress. Numerical experiments of the dead weight loading of a random assembly of cracks are described to illustrate the behaviour of the model. It is found that the time series of the energy release and the length of active fractures are highly nonlinear. Attempts to identify precursory information to estimate the time to failure from the cumulative energy release rate series proved to be unsuccessful. In particular, no evidence could be found for any form of organized oscillatory behaviour in the time series prior to the time of failure. JF - Proceedings - Symposium on Rock Mechanics AU - Napier, J A L A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 911 EP - 917 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - rock masses KW - failures KW - numerical models KW - stress KW - prediction KW - elastic constants KW - displacements KW - rock mechanics KW - cracks KW - discontinuities KW - seismicity KW - time factor KW - faults KW - Young's modulus KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128947?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Numerical+studies+of+time-dependent+failure+and+implications+for+the+prediction+of+time+to+failure&rft.au=Napier%2C+J+A+L&rft.aulast=Napier&rft.aufirst=J+A&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=911&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 8 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - cracks; discontinuities; displacements; elastic constants; failures; faults; numerical models; prediction; rock masses; rock mechanics; seismicity; stress; time factor; Young's modulus ER - TY - JOUR T1 - Damage evolution and propagation paths of en-echelon cracks AN - 52128908; 2002-026786 AB - A continuum damage mechanics model simulates the stress and damage fields and the corresponding paths of pressurized en-echelon cracks. The model includes gradual strength degradation and subcritical crack growth, together with development of process zones, strain localization and brittle failure. Prior to onset of damage, the calculated stress field around the pressurized cracks is the same as that produced by linear-elastic models. After the onset of damage, localized damage zones spread out around the crack planes, and their shape is sensitive to the state of stress. The model reproduces shapes of damage lobes and geometries of crack connections that are commonly observed around en-echelon dyke segments in sandstone. Thus, the distributed damage and the crack paths may help to better estimate the state of stress acting during growth of pressurized cracks (dykes). The close kinship between dykes and artificial hydrofracturing provides an economic incentive to incorporate our results in hydraulic fracturing analyses. JF - Proceedings - Symposium on Rock Mechanics AU - Weinberger, R AU - Lyakhovsy, V AU - Agnon, A A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1125 EP - 1132 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - hydraulic fracturing KW - stress KW - sandstone KW - brittle deformation KW - deformation KW - rock mechanics KW - intrusions KW - dikes KW - sedimentary rocks KW - cracks KW - propagation KW - clastic rocks KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128908?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Damage+evolution+and+propagation+paths+of+en-echelon+cracks&rft.au=Weinberger%2C+R%3BLyakhovsy%2C+V%3BAgnon%2C+A&rft.aulast=Weinberger&rft.aufirst=R&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1125&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 37 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - brittle deformation; clastic rocks; cracks; deformation; dikes; hydraulic fracturing; intrusions; propagation; rock mechanics; sandstone; sedimentary rocks; stress ER - TY - JOUR T1 - Excavation damage and stability studies at the URL; rock mechanics considerations for nuclear fuel waste disposal in Canada AN - 52128907; 2002-026754 AB - In the past ten years, several large-scale underground experiments have been conducted at AECL's Underground Research Laboratory (URL) to address geomechanics issues related to the disposal of nuclear fuel waste in Canada. Two key rock mechanics issues that have been studied are the development of near-field excavation damage and the stability of underground excavations in granite under various boundary conditions. This paper presents an overview of four of these in situ experiments and highlights the main findings in terms of rock mechanics considerations for nuclear waste disposal. JF - Proceedings - Symposium on Rock Mechanics AU - Read, R S AU - Chandler, N A A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 861 EP - 868 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - rock masses KW - engineering properties KW - igneous rocks KW - granites KW - damage KW - waste disposal sites KW - stability KW - Pinawa Manitoba KW - mathematical models KW - Manitoba KW - excavations KW - boundary conditions KW - Underground Research Laboratory KW - rock mechanics KW - radioactive waste KW - plutonic rocks KW - Canada KW - Western Canada KW - Lac du Bonnet Batholith KW - waste disposal KW - underground disposal KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128907?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Excavation+damage+and+stability+studies+at+the+URL%3B+rock+mechanics+considerations+for+nuclear+fuel+waste+disposal+in+Canada&rft.au=Read%2C+R+S%3BChandler%2C+N+A&rft.aulast=Read&rft.aufirst=R&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=861&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 18 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - boundary conditions; Canada; damage; engineering properties; excavations; granites; igneous rocks; Lac du Bonnet Batholith; Manitoba; mathematical models; Pinawa Manitoba; plutonic rocks; radioactive waste; rock masses; rock mechanics; stability; underground disposal; Underground Research Laboratory; waste disposal; waste disposal sites; Western Canada ER - TY - JOUR T1 - Propagation of a penny-shape hydraulic fracture in an impermeable rock AN - 52128902; 2002-026753 AB - This paper deals with the self-similar solution of a penny-shape hydraulic fracture propagating in an impermeable elastic rock. Growth of the fracture is driven by injection of an incompressible Newtonian fluid at the center of the fracture, at a flow rate varying according to a power law of time (which includes the practically important case of a constant injection rate). The solution is restricted to the so-called viscosity-dominated regime where it can be assumed that the rock has zero toughness. In this regime, the fracture tip is characterized by a singularity which is weaker than the classical square root singularity of linear elastic fracture mechanics. The paper describes the construction of a semi-analytical similarity solution, which incorporates the known singularity of the fluid pressure at the center of the fracture and at the tip and which is based on series expansions of the fracture opening and fluid pressure in terms of Jacobi polynomials. It is shown that very few terms in the expansions are needed to capture the solution accurately. JF - Proceedings - Symposium on Rock Mechanics AU - Savitski (Savitskiy), Alexei (Aleksei) AU - Detournay, Emmanuel A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 851 EP - 858 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - hydraulic fracturing KW - hydraulics KW - in situ KW - elastic properties KW - stress KW - mechanical properties KW - mathematical models KW - elastic constants KW - fractures KW - cracks KW - fluid pressure KW - propagation KW - Young's modulus KW - 30:Engineering geology KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128902?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Propagation+of+a+penny-shape+hydraulic+fracture+in+an+impermeable+rock&rft.au=Savitski+%28Savitskiy%29%2C+Alexei+%28Aleksei%29%3BDetournay%2C+Emmanuel&rft.aulast=Savitski+%28Savitskiy%29&rft.aufirst=Alexei&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=851&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 29 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - cracks; elastic constants; elastic properties; fluid pressure; fractures; hydraulic fracturing; hydraulics; in situ; mathematical models; mechanical properties; propagation; stress; Young's modulus ER - TY - JOUR T1 - Use of gabions for localized slope stabilization in difficult terrain AN - 52128868; 2002-026798 AB - Two case studies are used to illustrate the application of gabion rock baskets for localized slope stabilization and erosion protection in difficult terrain. The gabion concept has been used for more than a century in numerous erosion control and bank protection projects. These flexible, environmentally sound and economical elements can also be used in small-scale rock slope stabilization projects where more invasive methods are either impractical or cost prohibitive. JF - Proceedings - Symposium on Rock Mechanics AU - Kandaris, P M A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1221 EP - 1227 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - backfill KW - gabions KW - erosion KW - Torilla Flat KW - reclamation KW - prediction KW - Horse Mesa Dam KW - dams KW - Arizona KW - slope stability KW - central Arizona KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128868?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Use+of+gabions+for+localized+slope+stabilization+in+difficult+terrain&rft.au=Kandaris%2C+P+M&rft.aulast=Kandaris&rft.aufirst=P&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1221&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 7 N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Arizona; backfill; central Arizona; dams; erosion; gabions; Horse Mesa Dam; prediction; reclamation; slope stability; Torilla Flat; United States ER - TY - JOUR T1 - Downhole tiltmeter fracture mapping; a new tool for direct measurement of hydraulic fracture growth AN - 52128851; 2002-026778 AB - Downhole tiltmeter fracture mapping is a new technology for measuring hydraulic fracture dimension growth during the pumping of a fracture treatment. Not only has this technology allowed direct measurement of hydraulic fracture growth, it can also provide the necessary data to "calibrate" fracture growth models. Downhole tilt fracture mapping involves deploying wireline-conveyed tiltmeter arrays in offset wellbores to measure hydraulic fracture-induced deformation versus time. This technology has been employed to map over 100 fracture treatments in the last eighteen months, resulting in significant economic benefits. One example is more efficient zonal coverage by reduction/enlargement or early termination of propped fracture treatments (guided by real-time analysis). Although downhole tiltmeter fracture mapping has only been implemented in a few fields so far, it has for the first time allowed the gathering of statistically significant data sets on how hydraulic fractures actually do grow. JF - Proceedings - Symposium on Rock Mechanics AU - Wright, C A AU - Davis, E J AU - Wang, G AU - Weijers, L A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1061 EP - 1068 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - South Belridge Field KW - hydraulic fracturing KW - site exploration KW - tiltmeters KW - mapping KW - downhole methods KW - rock mechanics KW - measurement KW - California KW - fractures KW - Oklahoma KW - Mounds Oklahoma KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128851?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Downhole+tiltmeter+fracture+mapping%3B+a+new+tool+for+direct+measurement+of+hydraulic+fracture+growth&rft.au=Wright%2C+C+A%3BDavis%2C+E+J%3BWang%2C+G%3BWeijers%2C+L&rft.aulast=Wright&rft.aufirst=C&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1061&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 17 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - California; downhole methods; fractures; hydraulic fracturing; mapping; measurement; Mounds Oklahoma; Oklahoma; rock mechanics; site exploration; South Belridge Field; tiltmeters; United States ER - TY - JOUR T1 - The impact of localisation of shear bands on dilation in sandstone AN - 52128834; 2002-026787 AB - Radial strain recordings from 24 triaxial tests on sandstone cores had been analysed in order to investigate if dilation could be related to localisation of shear bands. A weak azimuthal anisotropy was observed both in the hydrostatic and in the triaxial stress region. However, the results showed that the orientation of the principal strain directions shifted from the hydrostatic region to the triaxial region. Two different mechanisms relating to closing of microcracks and shear crack sliding might explain this observation. Another shift in the orientation of the principal strain directions was observed after peak stress and was followed by a significant increase in the strain anisotropy. No correlation was found between the orientation of the principal radial strain before peak stress and the orientation of the shear bands observed after peak stress. These results indicate that localisation of shear bands only affects the radial strain after peak stress in these materials. JF - Proceedings - Symposium on Rock Mechanics AU - Larsen, I AU - Fjaer, E A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1133 EP - 1136 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - strain KW - sandstone KW - mechanical properties KW - deformation KW - triaxial tests KW - rock mechanics KW - sedimentary rocks KW - shear KW - dilation KW - clastic rocks KW - anisotropy KW - ductile deformation KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128834?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=The+impact+of+localisation+of+shear+bands+on+dilation+in+sandstone&rft.au=Larsen%2C+I%3BFjaer%2C+E&rft.aulast=Larsen&rft.aufirst=I&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1133&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 5 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - anisotropy; clastic rocks; deformation; dilation; ductile deformation; mechanical properties; rock mechanics; sandstone; sedimentary rocks; shear; strain; triaxial tests ER - TY - JOUR T1 - Analyses of drift stability and rockfall due to earthquake ground motion at Yucca Mountain, Nevada AN - 52128824; 2002-026742 AB - A technical issue of concern in the performance assessment of the proposed repository at Yucca Mountain (YM) is potential damage to the waste packages (WPs) emplaced in the drifts by direct rockfall due to earthquake ground motion. This is of particular interest because the rock mass surrounding the proposed repository is highly fractured and YM is located in a seismically active region. This paper analyzes rockfall phenomena by simulating the behavior of an unsupported emplacement drift undergoing repeated seismic ground motion after subjecting it to in situ stress and, for some cases, a time-decaying thermal load generated by the emplaced wastes. Preliminary modeling results show that fracture pattern and block size have a controlling effect on the number of blocks falling simultaneously, the extent of rockfall, and the overall drift stability. Other factors that may affect rockfall are also discussed, including characteristics of seismic ground motion, model setup, and rock and fracture thermal-mechanical properties. JF - Proceedings - Symposium on Rock Mechanics AU - Chen, Rui A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 759 EP - 766 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - rockfalls KW - high-level waste KW - geologic hazards KW - stability KW - seismic response KW - Nye County Nevada KW - mass movements KW - ground motion KW - thermomechanical properties KW - Yucca Mountain KW - earthquakes KW - Nevada KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128824?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Analyses+of+drift+stability+and+rockfall+due+to+earthquake+ground+motion+at+Yucca+Mountain%2C+Nevada&rft.au=Chen%2C+Rui&rft.aulast=Chen&rft.aufirst=Rui&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=759&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 22 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - earthquakes; geologic hazards; ground motion; high-level waste; mass movements; Nevada; Nye County Nevada; rockfalls; seismic response; stability; thermomechanical properties; United States; Yucca Mountain ER - TY - JOUR T1 - Characterization of rock strength and jointing "in situ" AN - 52128815; 2002-026771 AB - Rock mass data gathering for mining and tunneling projects is based on core drilling and observations at the site. Field methods for determination of rock strength at a site use the Point Load and Schmidt Hammer testers. Core drilling from the surface is costly and, if performed from the excavation, it is also interfering with operations. The presented method of borehole penetrometer testing combined with borescoping, allows for inexpensive and convenient characterization of strength distribution of intact rock around the excavation. Small drill holes 38.1 mm (1.5 in) in diameter, that can be drilled by any bolting machine. Such holes can be drilled in any direction according to the engineering interest and geologic composition of strata around the opening. Rock strength is determined by the indenter forced into the wall of the drill hole. The result is obtained within 15-30 seconds. Standardized indenters allow for breakage of any rock from soft shale and coal to the strongest igneous rock. The same holes are viewed by the miniature color TV camera, where joints and strata changes can be seen and recorded. Principle of work and possibility of application of proposed system are discussed with examples of the results obtained from field investigations. JF - Proceedings - Symposium on Rock Mechanics AU - von Unrug, Kot F A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 999 EP - 1006 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - rock masses KW - mines KW - in situ KW - strength KW - site exploration KW - joints KW - tensile strength KW - coal fields KW - uniaxial tests KW - rock mechanics KW - case studies KW - fractures KW - style KW - tunnels KW - load tests KW - Kentucky KW - compressive strength KW - Eastern Kentucky coal field KW - design KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128815?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Characterization+of+rock+strength+and+jointing+%22in+situ%22&rft.au=von+Unrug%2C+Kot+F&rft.aulast=von+Unrug&rft.aufirst=Kot&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=999&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 7 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - case studies; coal fields; compressive strength; design; Eastern Kentucky coal field; fractures; in situ; joints; Kentucky; load tests; mines; rock masses; rock mechanics; site exploration; strength; style; tensile strength; tunnels; uniaxial tests; United States ER - TY - JOUR T1 - Laboratory investigation of drill cuttings disposal by downhole injection AN - 52128790; 2002-026772 AB - The results of laboratory block fracturing experiments are presented which investigate the dominant fracturing mechanisms associated with drilling-waste injection operations. The tests include injection into reactive and competent shales, high permeability sands, and multi-layered formations of varying permeability. Specific details of proposed fracture mechanisms have been confirmed or, where found to be inappropriate, these have been refuted. The results of these experiments help confirm the adequacy of design of injection operations and will continue to assure safe containment of the drilling waste. JF - Proceedings - Symposium on Rock Mechanics AU - Willson, S M AU - Steiger, Ronald P AU - Moschovidis, Zissis A AU - Abou-Sayed, Ahmed S AU - de Bree, P AU - Sirevag, G A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1009 EP - 1016 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - laboratory studies KW - experimental studies KW - sedimentary rocks KW - shale KW - injection KW - sandstone KW - drilling KW - waste disposal KW - cuttings KW - clastic rocks KW - permeability KW - 30:Engineering geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128790?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Laboratory+investigation+of+drill+cuttings+disposal+by+downhole+injection&rft.au=Willson%2C+S+M%3BSteiger%2C+Ronald+P%3BMoschovidis%2C+Zissis+A%3BAbou-Sayed%2C+Ahmed+S%3Bde+Bree%2C+P%3BSirevag%2C+G&rft.aulast=Willson&rft.aufirst=S&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1009&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 6 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - clastic rocks; cuttings; drilling; experimental studies; injection; laboratory studies; permeability; sandstone; sedimentary rocks; shale; waste disposal ER - TY - JOUR T1 - Permability changes induced by excavation in fractures tuff AN - 52128784; 2002-026741 AB - For a niche seepage test site in the Exploratory Studies Facility at Yucca Mountain, air-injection tests using multiple packer strings were performed to measure air-permeability values along boreholes drilled before niche excavation. These tests were repeated after niche excavation. Increases of nearly two orders of magnitude were measured between the pre-excavation air-permeability values and the post-excavation air-permeability values. These increases could be interpreted as the opening of pre-existing natural fractures induced by stress releases associated with niche excavation. For the horizontal fractures above the niche, the effective fracture apertures increased with the unloading and removing of rock mass in the niche opening. The pre-excavation permeability distribution was used to characterize the initial fracture aperture distributions. Stress redistribution was evaluated with simple continuum models. The fracture opening and the corresponding fracture permeability increases associated with the stress releases were calculated. Calculated post- to pre-excavation permeability ratios compared well with the measured values for most of the borehole intervals. JF - Proceedings - Symposium on Rock Mechanics AU - Wang, J S Y AU - Elsworth, D A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 751 EP - 757 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - rock masses KW - fractured materials KW - volcanic rocks KW - site exploration KW - igneous rocks KW - stress KW - mechanical properties KW - mathematical models KW - Nye County Nevada KW - excavations KW - seepage KW - rock mechanics KW - pyroclastics KW - fractures KW - tuff KW - Yucca Mountain KW - permeability KW - Nevada KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128784?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Permability+changes+induced+by+excavation+in+fractures+tuff&rft.au=Wang%2C+J+S+Y%3BElsworth%2C+D&rft.aulast=Wang&rft.aufirst=J+S&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=751&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 17 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - excavations; fractured materials; fractures; igneous rocks; mathematical models; mechanical properties; Nevada; Nye County Nevada; permeability; pyroclastics; rock masses; rock mechanics; seepage; site exploration; stress; tuff; United States; volcanic rocks; Yucca Mountain ER - TY - JOUR T1 - Fluid flow in 0.5-m scale blocks of Topopah Spring Tuff AN - 52128753; 2002-026733 AB - A laboratory experiment was conducted on a 0.5-m scale block of Topopah Spring tuff, to measure fluid flow and mechanical deformation properties under conditions that approximate the near-field environment of a potential nuclear waste repository, and to provide an intermediate-scale test case for numerical model validation. The test specimen is a 0.25 X 0.25 X 0.50 m rectangular prism bisected by an artificial (saw-cut) fracture orthogonal to the tuff fabric. Water was supplied by a point source at the center of the fracture under various pressures of up to 0.04 MPa. Both fluid flow and mechanical properties were found to be anisotropic and strongly correlated with the ash flow fabric. Fluid mass-balance measurements revealed that only minor imbibition of water occurred through the fracture surfaces and that flow rates were independent of normal stress to 14.0 MPa and temperature to 140 degrees C. Flow through the fracture occurred largely through un-correlated porosity that intersected the fracture plane. JF - Proceedings - Symposium on Rock Mechanics AU - Costantino, M S AU - Blair, S C AU - Carlson, S R A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 691 EP - 698 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - volcanic rocks KW - igneous rocks KW - rock mechanics KW - Cenozoic KW - tuff KW - Yucca Mountain KW - Nevada KW - high-level waste KW - underground storage KW - thermal properties KW - mechanical properties KW - deformation KW - Nye County Nevada KW - porosity KW - Miocene KW - Topopah Spring Member KW - pyroclastics KW - Tertiary KW - Neogene KW - underground installations KW - shear KW - hydraulic conductivity KW - waste disposal KW - permeability KW - hydrostatic pressure KW - anisotropy KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128753?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Fluid+flow+in+0.5-m+scale+blocks+of+Topopah+Spring+Tuff&rft.au=Costantino%2C+M+S%3BBlair%2C+S+C%3BCarlson%2C+S+R&rft.aulast=Costantino&rft.aufirst=M&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=691&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 14 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - anisotropy; Cenozoic; deformation; high-level waste; hydraulic conductivity; hydrostatic pressure; igneous rocks; mechanical properties; Miocene; Neogene; Nevada; Nye County Nevada; permeability; porosity; pyroclastics; rock mechanics; shear; Tertiary; thermal properties; Topopah Spring Member; tuff; underground installations; underground storage; United States; volcanic rocks; waste disposal; Yucca Mountain ER - TY - JOUR T1 - Inelastic rock reinforcement design for the Lake Mathews Outlet facilities project AN - 52128721; 2002-026726 AB - The new outlet facilities at Lake Mathews Reservoir in Riverside County, California, will include a new outlet tower constructed within a 27 to 34 m deep excavation. Fully grouted rock bolts will provide support for removable wedges exposed in the excavation, which will be subject to a peak horizontal earthquake acceleration of 0.62 times gravity under the design earthquake loading conditions. Since large wedge failures could damage the new tower, the performance of the rock support under seismic loading was considered explicitly in the design process. A displacement-based inelastic design methodology was developed to determine support requirements for the tower excavation under seismic loading. The maximum design load on the rock bolts, when permitted to yield inelastically, is considerably less than the peak dynamic loads associated with the design earthquake. This design method justified the use of a pseudostatic acceleration that is approximately 35 percent less than the peak ground acceleration. JF - Proceedings - Symposium on Rock Mechanics AU - McRae, M T AU - Kieffer, D S AU - Dubnewych, S A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 637 EP - 642 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - elasticity KW - geologic hazards KW - Colorado River Aqueduct KW - loading KW - Riverside County California KW - displacements KW - seismic response KW - preventive measures KW - Lake Mathews Reservoir KW - California KW - slope stability KW - faults KW - design KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128721?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Inelastic+rock+reinforcement+design+for+the+Lake+Mathews+Outlet+facilities+project&rft.au=McRae%2C+M+T%3BKieffer%2C+D+S%3BDubnewych%2C+S&rft.aulast=McRae&rft.aufirst=M&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=637&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 10 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - California; Colorado River Aqueduct; design; displacements; elasticity; faults; geologic hazards; Lake Mathews Reservoir; loading; preventive measures; Riverside County California; seismic response; slope stability; United States ER - TY - JOUR T1 - Hanging Lake Tunnels revisited; instrumentation for supplemental stabilization AN - 52128713; 2002-026768 AB - The Hanging Lake Tunnel Project used a comprehensive geologic mapping/geotechnical observation and displacement monitoring program to guide selection of supplemental stabilization in areas where the standard design was insufficient. This paper reviews the results of geologic mapping and observations, displacement monitoring, and supplemental stabilization design at four specific locations, including two portals and three interior reaches of tunnel. Supplemental stabilization (rock reinforcement deeper than 3.7 m and shotcrete greater than 50 mm minimum thickness) was deemed necessary where (a) convergence in the top heading excavation was at least 8 mm, (b) convergence during and immediately following bench excavation was at least 50 mm, and (c) convergence after bench excavation was at least 8 mm. A more conservative approach to supplemental stabilization was taken at the Shoshone Portal, because of the existence of loosened rock, narrow pillars, and deep abutment cuts. Supplemental stabilization consisting of deep rock reinforcement and extra shotcrete was most effective when installed early in the excavation sequence (before bench excavation) through a given tunnel section. Overall ground conditions were good, but locally troublesome ground conditions (based on overbreak and the need for supplemental stabilization), included highly altered granitic rock with clay infilling in joints. The use of rock reinforcement and shotcrete was well suited to the ground conditions and multiple face excavation sequence on the project. JF - Proceedings - Symposium on Rock Mechanics AU - Scotese, Thomas R AU - Pihl, Roger A AU - Trapani, Ralph J A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 973 EP - 982 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - rockfalls KW - monitoring KW - roof control KW - stability KW - reinforced materials KW - mapping KW - Hanging Lake Tunnel Project KW - displacements KW - excavations KW - rock mechanics KW - Vail Pass KW - weathered materials KW - tunnels KW - mass movements KW - Colorado KW - faults KW - pillars KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128713?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Hanging+Lake+Tunnels+revisited%3B+instrumentation+for+supplemental+stabilization&rft.au=Scotese%2C+Thomas+R%3BPihl%2C+Roger+A%3BTrapani%2C+Ralph+J&rft.aulast=Scotese&rft.aufirst=Thomas&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=973&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 2 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Colorado; displacements; excavations; faults; Hanging Lake Tunnel Project; mapping; mass movements; monitoring; pillars; reinforced materials; rock mechanics; rockfalls; roof control; stability; tunnels; United States; Vail Pass; weathered materials ER - TY - JOUR T1 - Some consequences of a viscoplastic approach to time-dependent behavior AN - 52128672; 2002-026762 AB - Design of safe, stable mine excavations requires consideration of time-dependent phenomena, a rather neglected area outside salt and potash mines. In this regard, viscoplasticity is the simplest extension of the standard elastic model, limited by rock mass strength, into the time domain. The main consequence of viscoplasticity is time-dependent displacement, above the elastic limit, that grows with ever increasing strain, although at a diminishing rate. Rounded stair-step displacement versus time curves are similar to those often observed in the field. Such a process cannot continue indefinitely and must either approach equilibrium or terminate in fast failure. JF - Proceedings - Symposium on Rock Mechanics AU - Pariseau, W G A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 927 EP - 934 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - rock masses KW - mining KW - underground mining KW - elastic properties KW - Homestake Mine KW - Carr Fork Mine KW - excavations KW - rock mechanics KW - finite element analysis KW - sedimentary rocks KW - time factor KW - mining geology KW - mass movements KW - open-pit mining KW - potash KW - rockfalls KW - mines KW - failures KW - chemically precipitated rocks KW - surface mining KW - strength KW - viscoplastic materials KW - Salt Lake County Utah KW - statistical analysis KW - Bingham Utah KW - mathematical models KW - evaporites KW - Bingham Canyon Mine KW - Utah KW - elastic limit KW - design KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128672?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Some+consequences+of+a+viscoplastic+approach+to+time-dependent+behavior&rft.au=Pariseau%2C+W+G&rft.aulast=Pariseau&rft.aufirst=W&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=927&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 14 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Bingham Canyon Mine; Bingham Utah; Carr Fork Mine; chemically precipitated rocks; design; elastic limit; elastic properties; evaporites; excavations; failures; finite element analysis; Homestake Mine; mass movements; mathematical models; mines; mining; mining geology; open-pit mining; potash; rock masses; rock mechanics; rockfalls; Salt Lake County Utah; sedimentary rocks; statistical analysis; strength; surface mining; time factor; underground mining; United States; Utah; viscoplastic materials ER - TY - JOUR T1 - Design and construction solutions for excavation under and adjacent to the Parliament Buildings, Ottawa AN - 52128655; 2002-026719 AB - Construction of new excavations adjacent to and below parts of the Centre Block of the Parliamentary Buildings in Ottawa, Canada, was successfully completed during the 1997 summer Parliamentary Recess, without damage to the existing heritage buildings or disruption to the proceedings of Parliament. Design of the excavations, and monitoring of construction activities was focused throughout on ensuring minimal damage to the existing buildings by (i) requiring extremely high standards of perimeter excavation control and (ii) pre-supporting all areas of the bedrock that were load bearing. All areas where possible excavation-related displacements could compromise the stability of the existing walls or heavy towers were monitored with a comprehensive arrangement of instrumentation, positioned on the basis of extensive 2D and 3D modelling undertaken to optimize excavation geometry and reinforcement layouts. JF - Proceedings - Symposium on Rock Mechanics AU - Carter, T G AU - Webb, G S AU - van Bers, M V AU - Culham, G A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 585 EP - 592 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - three-dimensional models KW - bearing capacity KW - site exploration KW - loading KW - Rideau River KW - excavations KW - two-dimensional models KW - Ontario KW - Canada KW - Ottawa Ontario KW - tunnels KW - Eastern Canada KW - construction KW - design KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128655?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Design+and+construction+solutions+for+excavation+under+and+adjacent+to+the+Parliament+Buildings%2C+Ottawa&rft.au=Carter%2C+T+G%3BWebb%2C+G+S%3Bvan+Bers%2C+M+V%3BCulham%2C+G&rft.aulast=Carter&rft.aufirst=T&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=585&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 1 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - bearing capacity; Canada; construction; design; Eastern Canada; excavations; loading; Ontario; Ottawa Ontario; Rideau River; site exploration; three-dimensional models; tunnels; two-dimensional models ER - TY - JOUR T1 - The effect of geotechnical conditions on the time-dependent behaviour of hard rock in deep mines AN - 52128624; 2002-026759 AB - Measurements in the deep tabular excavations of the South African gold mines indicate significant time-dependent deformation. Although the host rock consists of hard brittle material, creep-like movements of the order of 0.6 mm/h have been observed in certain areas. This paper describes measurements of time-dependent deformation in three different geotechnical environments. The time-dependent behaviour is the result of the rheology of the mining-induced fracture zone surrounding the excavations at these depths, while pre-existing discontinuities such as bedding planes also play a prominent role. It appears that detailed monitoring of stope closure profiles can provide a useful signature of the geotechnical response of the rock mass to the mining process. The closure profiles are simulated using a displacement discontinuity framework that allows for the time-dependent failure processes. Preliminary studies indicated that the initial jump in stope closure after blasting is correlated with the stope face stress. JF - Proceedings - Symposium on Rock Mechanics AU - Malan, D F AU - Napier, J A L A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 903 EP - 910 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - mining KW - Western Deep Levels Mine KW - Kloof Mine KW - underground mining KW - North-West Province South Africa KW - Carletonville South Africa KW - displacements KW - deformation KW - excavations KW - rock mechanics KW - Ventersdorp South Africa KW - discontinuities KW - brittle materials KW - blasting KW - time factor KW - rheology KW - mining geology KW - creep KW - Southern Africa KW - Africa KW - South Africa KW - faults KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128624?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=The+effect+of+geotechnical+conditions+on+the+time-dependent+behaviour+of+hard+rock+in+deep+mines&rft.au=Malan%2C+D+F%3BNapier%2C+J+A+L&rft.aulast=Malan&rft.aufirst=D&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=903&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 11 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Africa; blasting; brittle materials; Carletonville South Africa; creep; deformation; discontinuities; displacements; excavations; faults; Kloof Mine; mining; mining geology; North-West Province South Africa; rheology; rock mechanics; South Africa; Southern Africa; time factor; underground mining; Ventersdorp South Africa; Western Deep Levels Mine ER - TY - JOUR T1 - Conduct of plate loading tests at Yucca Mountain, Nevada AN - 52128579; 2002-026737 AB - A series of unique plate loading tests have recently been conducted by Sandia National Laboratories in welded tuff, at the Yucca Mountain Project Exploratory Studies Facility at Yucca Mountain, Nevada. The welded tuffs of Yucca Mountain are being considered by the United States Department of Energy as potential host media for the emplacement of high level nuclear waste. This paper describes the design and conduct of the in situ tests, and compares results with pre- and post-test elastic analyses. JF - Proceedings - Symposium on Rock Mechanics AU - George, J T AU - Finley, R E AU - Riggins, M A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 721 EP - 727 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - volcanic rocks KW - in situ KW - welded tuff KW - igneous rocks KW - elastic properties KW - Nye County Nevada KW - rock mechanics KW - pyroclastics KW - load tests KW - thermomechanical properties KW - Yucca Mountain KW - Nevada KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128579?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Conduct+of+plate+loading+tests+at+Yucca+Mountain%2C+Nevada&rft.au=George%2C+J+T%3BFinley%2C+R+E%3BRiggins%2C+M&rft.aulast=George&rft.aufirst=J&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=721&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 9 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - elastic properties; igneous rocks; in situ; load tests; Nevada; Nye County Nevada; pyroclastics; rock mechanics; thermomechanical properties; United States; volcanic rocks; welded tuff; Yucca Mountain ER - TY - JOUR T1 - Micromechanics of rocks containing orthogonal fracture networks AN - 52128546; 2002-026730 AB - To describe the nonlinear stress-strain behavior of rock under compression, many crack models have been developed and their validity has been checked out. This paper presents an approach to characterize the fracture system of a systematically fractured rock and to apply crack models to describe the deformation and failure behavior. From various laboratory tests, the characteristic deformation and failure mechanism was examined. Based on the crack information obtained from the laboratory tests, the nonlinear stress-strain behavior of the rock specimen was calculated. Finally, the mechanical model has been implemented into two-and three-dimensional numerical analyses. The results predicted by using the crack model were compared with the results obtained from the laboratory. JF - Proceedings - Symposium on Rock Mechanics AU - Jeon, S AU - Kemeny, J M A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 669 EP - 674 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - strain KW - microcracks KW - stress KW - mathematical models KW - micromechanics KW - uniaxial tests KW - rock mechanics KW - fractures KW - cracks KW - discontinuities KW - compressive strength KW - anisotropy KW - pillars KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128546?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Micromechanics+of+rocks+containing+orthogonal+fracture+networks&rft.au=Jeon%2C+S%3BKemeny%2C+J+M&rft.aulast=Jeon&rft.aufirst=S&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=669&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 10 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - anisotropy; compressive strength; cracks; discontinuities; fractures; mathematical models; microcracks; micromechanics; pillars; rock mechanics; strain; stress; uniaxial tests ER - TY - JOUR T1 - Characterization of rock conditions for electric transmission line upgrades AN - 52128493; 2002-026722 AB - Newly developed EPRI capacity evaluation processes for upgrading foundations on existing transmission lines are presented in terms of site characterization and subsurface capacity evaluations. The evaluation process is presented as a series of flow charts--the result of a state-of-the-practice literature review and consolidation of over 250 publications. A case history is used to illustrate the application. JF - Proceedings - Symposium on Rock Mechanics AU - Kandaris, P M AU - Kondziolka, R E AU - Adams, J P AU - Hirany, A A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 607 EP - 614 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - foundations KW - volcanic rocks KW - igneous rocks KW - statistical analysis KW - dacites KW - probability KW - grouting KW - compressive strength KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52128493?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Characterization+of+rock+conditions+for+electric+transmission+line+upgrades&rft.au=Kandaris%2C+P+M%3BKondziolka%2C+R+E%3BAdams%2C+J+P%3BHirany%2C+A&rft.aulast=Kandaris&rft.aufirst=P&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=607&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 23 N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - compressive strength; dacites; foundations; grouting; igneous rocks; probability; rock mechanics; statistical analysis; volcanic rocks ER - TY - JOUR T1 - A non-linear constitutive model for rock joints to evaluate unstable slip AN - 52127678; 2002-026782 AB - It has been suggested by several authors that relative stiffnesses could play a significant role in the phenomena of unstable slips along geological discontinuities, such as rock joints and faults. After reviewing some features of the shear behavior of rock joints, the authors present a set of constitutive equations that describes the complete stress-displacement surface. The proposed model, called CSDS, is compared with test results obtained from direct shear tests under constant normal stress and constant normal stiffness conditions. It is shown that the CSDS model can be used to estimate the post-peak stiffness of rock joints needed to establish whether slip is stable or unstable. JF - Proceedings - Symposium on Rock Mechanics AU - Simon, R AU - Aubertin, M AU - Mitri, H S A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1091 EP - 1098 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - mining KW - underground mining KW - stress KW - stiffness KW - joints KW - mathematical models KW - strike-slip faults KW - seismic response KW - rock mechanics KW - fractures KW - style KW - discontinuities KW - mining geology KW - shear tests KW - faults KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52127678?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=A+non-linear+constitutive+model+for+rock+joints+to+evaluate+unstable+slip&rft.au=Simon%2C+R%3BAubertin%2C+M%3BMitri%2C+H+S&rft.aulast=Simon&rft.aufirst=R&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1091&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 26 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - discontinuities; faults; fractures; joints; mathematical models; mining; mining geology; rock mechanics; seismic response; shear tests; stiffness; stress; strike-slip faults; style; underground mining ER - TY - JOUR T1 - Tiltmeter mapping to monitor drill cuttings disposal AN - 52127628; 2002-026775 AB - This paper documents the preliminary results of the application of surface and downhole tiltmeter diagnostics to map, monitor and evaluate downhole drill cuttings disposal at the joint-industry Mounds Drill Cuttings Injection Field Experiment Project. Knowledge of the created hydraulic fractures was critical for determining the placement of core-through wells to evaluate the "disposal domain" or fracturing mechanisms for both sandstone and shale intervals. Through real-time monitoring of the fracture geometry it was possible to detect fracture height growth during the test and insure that the injected fluids stayed in the intended zone. Also presented is a novel approach for determining fracture closure stress using downhole tilt analysis. The implications for hydraulic fracturing growth modeling are addressed. JF - Proceedings - Symposium on Rock Mechanics AU - Griffin, L G AU - Wright, C A AU - Davis, E J AU - Weijers, L AU - Moschovidis, Zissis A A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1033 EP - 1040 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - monitoring KW - tiltmeters KW - waste disposal sites KW - mechanical properties KW - mapping KW - cuttings KW - Wilcox Sand KW - fractures KW - Oklahoma KW - Mounds Oklahoma KW - drilling KW - waste disposal KW - 30:Engineering geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52127628?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Tiltmeter+mapping+to+monitor+drill+cuttings+disposal&rft.au=Griffin%2C+L+G%3BWright%2C+C+A%3BDavis%2C+E+J%3BWeijers%2C+L%3BMoschovidis%2C+Zissis+A&rft.aulast=Griffin&rft.aufirst=L&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1033&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 5 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - cuttings; drilling; fractures; mapping; mechanical properties; monitoring; Mounds Oklahoma; Oklahoma; tiltmeters; United States; waste disposal; waste disposal sites; Wilcox Sand ER - TY - JOUR T1 - Estimating the reliability of the primary support for a given tunnel section AN - 52127592; 2002-026746 AB - Uncertainty dominates design in rock engineering to such an extent that it sometimes raises doubts about the realism of a design solution. Using Monte Carlo simulation and the ground-support interaction model different sources of uncertainty can be integrated into the analysis allowing for determination of the reliability of a support section. Two example applications are presented which aim at demonstrating the benefits from adopting the proposed technique both as a back-analysis and a design tool for tunnel design. The binomial distribution is used to assist in the definition of the acceptable level of probability of failure which is a function of the application length of a section type. The role of correlation between variables defining the support capacity and the required pressure for ground-support equilibrium is discussed with reference to design variability (considered manageable at the face) and uncertainty (considered as unmanageable). Despite some limitations the proposed approach provides a meaningful and practical technique for evaluating the reliability of a tunnel support section. JF - Proceedings - Symposium on Rock Mechanics AU - Kalamaras, G S AU - Xu, S AU - Russo, G AU - Grasso, P A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 793 EP - 800 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - failures KW - roof control KW - tunnels KW - Monte Carlo analysis KW - statistical analysis KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52127592?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Estimating+the+reliability+of+the+primary+support+for+a+given+tunnel+section&rft.au=Kalamaras%2C+G+S%3BXu%2C+S%3BRusso%2C+G%3BGrasso%2C+P&rft.aulast=Kalamaras&rft.aufirst=G&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=793&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 17 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - failures; Monte Carlo analysis; rock mechanics; roof control; statistical analysis; tunnels ER - TY - JOUR T1 - Microseismic monitoring for fracturing in the Colorado Shales above a thermal oil recovery operation AN - 52127492; 2002-026779 AB - A microseismic monitoring system has been developed for the purpose of identifying induced fracturing in the Colorado Shales above a thermal oil recovery operation located at Cold Lake, Alberta, Canada. The system is an extension of continuous monitoring systems employed in mines [e.g. Gibowicz & Kijko 1994, Talebi et al. 1994] and builds on many of the learnings from oil field applications where the azimuth and extent of hydraulic fractures have been mapped with similar systems [e.g. Talebi et al. 1994, Warpinski et al. 1997]. The primary application of the system described herein is to identify and prevent casing or well failures. This objective can be achieved by observing and interpreting the events associated with (i) a fluid release and induced fracturing, (ii) movements in the rock that can lead to casing damage and failure, and (iii) the actual breaking of a casing. That latter represents a novel application of microseismic monitoring and has been supported by theoretical developments and field observations. JF - Proceedings - Symposium on Rock Mechanics AU - Boone, Thomas J AU - Nechtschein, Stephane AU - Smith, Richard AU - Youck, Daryl AU - Talebi, Shahriar A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1069 EP - 1076 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - hydraulic fracturing KW - monitoring KW - shale KW - hydraulic pressure KW - fracturing KW - deformation KW - Cold Lake Alberta KW - Alberta KW - rock mechanics KW - reservoir rocks KW - Colorado Shale KW - fractures KW - sedimentary rocks KW - Canada KW - microseisms KW - Western Canada KW - clastic rocks KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52127492?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Microseismic+monitoring+for+fracturing+in+the+Colorado+Shales+above+a+thermal+oil+recovery+operation&rft.au=Boone%2C+Thomas+J%3BNechtschein%2C+Stephane%3BSmith%2C+Richard%3BYouck%2C+Daryl%3BTalebi%2C+Shahriar&rft.aulast=Boone&rft.aufirst=Thomas&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1069&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 9 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Alberta; Canada; clastic rocks; Cold Lake Alberta; Colorado Shale; deformation; fractures; fracturing; hydraulic fracturing; hydraulic pressure; microseisms; monitoring; reservoir rocks; rock mechanics; sedimentary rocks; shale; Western Canada ER - TY - JOUR T1 - Physical modelling for creep parameters of soft rock AN - 52127446; 2002-026761 AB - The creep behaviour of a soft rock can be examined by experimental studies involving triaxial creep tests and tunnel physical model tests. The physical model tests show a close resemblance to the developed numerical analysis using fitted creep parameters determined by triaxial creep tests. At lower boundary stresses there was no obvious creep but as the boundary stresses increased the model displayed primary and secondary creep. The non-linear creep model using stress-dependent creep parameters, assigned according to the changing stress conditions in the creep process, appears to be a more rational approach to time-dependent behaviour than the traditional linear creep analysis. JF - Proceedings - Symposium on Rock Mechanics AU - Yu, C W AU - Chern, J C AU - Snee, C P M Y1 - 1999 PY - 1999 DA - 1999 SP - 919 EP - 926 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - Taiwan KW - Far East KW - in situ KW - biaxial tests KW - soft rocks KW - data acquisition KW - stress KW - data processing KW - deformation KW - triaxial tests KW - physical models KW - rock mechanics KW - fractures KW - creep KW - tunnels KW - Asia KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52127446?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Physical+modelling+for+creep+parameters+of+soft+rock&rft.au=Yu%2C+C+W%3BChern%2C+J+C%3BSnee%2C+C+P+M&rft.aulast=Yu&rft.aufirst=C&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=919&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2015, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 10 N1 - Document feature - illus. N1 - Last updated - 2015-04-16 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Asia; biaxial tests; creep; data acquisition; data processing; deformation; Far East; fractures; in situ; physical models; rock mechanics; soft rocks; stress; Taiwan; triaxial tests; tunnels ER - TY - JOUR T1 - Use of a stochastic approach on site investigation and material characterization AN - 52127416; 2002-026748 AB - Presence of weak spots or weak planes at critical locations could be lead to failure of a slope or a tunnel project. A systematic way of dealing with spatial variability of soil and rock using random field model is introduced and used to characterize the properties of a weak sedimentary rock. Material spatial variability is analyzed to estimate the distance within which the material property shows relatively strong correlation from point to point. Materials like shales could experience substantial loss of strength after reaching peak strength. Therefore, material spatial variation of a shale is characterized using the random field model based on the Brazilian tensile strengths tested at close intervals along a bore hole. The correlation distance and scale of fluctuation of the shale along the vertical direction are found. The correlation distance can be used for suggestion of future sampling program and for numerical simulation. JF - Proceedings - Symposium on Rock Mechanics AU - Hsu, Sung-Chi AU - Nelson, Priscilla P A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 809 EP - 816 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - rock masses KW - sedimentary rocks KW - numerical models KW - stochastic processes KW - site exploration KW - shale KW - tunnels KW - weak rocks KW - tensile strength KW - slope stability KW - clastic rocks KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52127416?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Use+of+a+stochastic+approach+on+site+investigation+and+material+characterization&rft.au=Hsu%2C+Sung-Chi%3BNelson%2C+Priscilla+P&rft.aulast=Hsu&rft.aufirst=Sung-Chi&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=809&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 10 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - clastic rocks; numerical models; rock masses; sedimentary rocks; shale; site exploration; slope stability; stochastic processes; tensile strength; tunnels; weak rocks ER - TY - JOUR T1 - Geologic resources inventory for the National Park System; status, applications, and geology-GIS data model AN - 52127082; 2002-020736 JF - Open-File Report - U. S. Geological Survey AU - Gregson, Joe AU - Poole, Anne R AU - Fryer, Steve AU - Heise, Bruce AU - Connors, Tim AU - Dudek, Kay Y1 - 1999 PY - 1999 DA - 1999 SP - 151 EP - 161 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - U. S. National Park Service KW - cartography KW - government agencies KW - national parks KW - public lands KW - models KW - geographic information systems KW - digital cartography KW - natural resources KW - inventory KW - information systems KW - USGS KW - 14:Geologic maps UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52127082?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Geologic+resources+inventory+for+the+National+Park+System%3B+status%2C+applications%2C+and+geology-GIS+data+model&rft.au=Gregson%2C+Joe%3BPoole%2C+Anne+R%3BFryer%2C+Steve%3BHeise%2C+Bruce%3BConnors%2C+Tim%3BDudek%2C+Kay&rft.aulast=Gregson&rft.aufirst=Joe&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=151&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - http://pubs.usgs.gov/openfile/of99-386/ https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Conference title - Digital mapping techniques '99; workshop N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 3 N1 - PubXState - VA N1 - Document feature - illus. N1 - Last updated - 2016-10-25 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - cartography; digital cartography; geographic information systems; government agencies; information systems; inventory; models; national parks; natural resources; public lands; U. S. National Park Service; United States; USGS ER - TY - JOUR T1 - Poroviscoelastic effects in anelastic strain recovery tests AN - 52126981; 2002-026791 AB - This paper shows an application of poroviscoelasticity principles for modelling and interpreting anelastic strain recovery data. A fully coupled pore fluid diffusion-solid deformation analysis with time-dependent rock parameters is presented which clearly shows the possibility of rock shrinkage, depending on the in-situ conditions and rock properties. The sensitivity analyses confirmed the importance of considering the effective stress coefficient as time-dependent, in opposition to conventional viscoelastic models. It was also found that small changes in this coefficient can significantly alter the strain pattern, and thus, the stress magnitude computations. JF - Proceedings - Symposium on Rock Mechanics AU - Bloch, M AU - Cui, L AU - Roegiers, J C AU - Abousleiman, Y A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1165 EP - 1172 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - strain KW - shale KW - sandstone KW - mathematical models KW - deformation KW - viscoelasticity KW - porosity KW - rock mechanics KW - chalk KW - sedimentary rocks KW - time factor KW - sensitivity analysis KW - anelasticity KW - carbonate rocks KW - clastic rocks KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126981?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Poroviscoelastic+effects+in+anelastic+strain+recovery+tests&rft.au=Bloch%2C+M%3BCui%2C+L%3BRoegiers%2C+J+C%3BAbousleiman%2C+Y&rft.aulast=Bloch&rft.aufirst=M&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1165&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 21 N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - anelasticity; carbonate rocks; chalk; clastic rocks; deformation; mathematical models; porosity; rock mechanics; sandstone; sedimentary rocks; sensitivity analysis; shale; strain; time factor; viscoelasticity ER - TY - JOUR T1 - Stability of statically indeterminate rock blocks under arbitrary loads AN - 52126949; 2002-026783 AB - The paper applies a new method based on block theory, stress analysis and linear programming to study the stability of a statically indeterminate 2-d block under arbitrary loads. The stability of keyblocks subjected to a range of directions of a fictitious loading or support force is analyzed using linear programming. Based on this optimization procedure, a keyblock can be classified as stable, unstable or potentially unstable. The range of loading force where a keyblock may be potentially unstable (uncertainty in stability) is affected by the indeterminacy of the force system and the angle of applied load. For a wide range of applied load angles, the uncertainty is small. Hence, the technique presented here would provide useful results for design. JF - Proceedings - Symposium on Rock Mechanics AU - Mauldon, M AU - Savage, G AU - Chou, K AU - Wu, Y AU - Ding, D A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1099 EP - 1105 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - rock masses KW - shear strength KW - linear programming KW - stress KW - stability KW - optimization KW - mechanical properties KW - tensile strength KW - seismic response KW - rock mechanics KW - physical properties KW - Q KW - load tests KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126949?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Stability+of+statically+indeterminate+rock+blocks+under+arbitrary+loads&rft.au=Mauldon%2C+M%3BSavage%2C+G%3BChou%2C+K%3BWu%2C+Y%3BDing%2C+D&rft.aulast=Mauldon&rft.aufirst=M&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1099&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 17 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - linear programming; load tests; mechanical properties; optimization; physical properties; Q; rock masses; rock mechanics; seismic response; shear strength; stability; stress; tensile strength ER - TY - JOUR T1 - Microseismic monitoring of the Mounds drill cuttings injection tests AN - 52126913; 2002-026774 AB - This paper describes the microseismic mapping of repeated injections of drill cuttings into two separate formations at a test site near Mounds, OK. Injections were performed in sandstone and shale formations at depths of 830 and 595 m, respectively. Typical injection disposal was simulated using multiple small-volume injections over a three-day period, with long shut-in periods between the injections. Microseismic monitoring was achieved using a 5-level array of wall-locked, wireline-run, triaxial-accelerometer receivers in a monitor well 76 m from the disposal well. Results of the mapped microseismic locations showed that the disposal domain was generally aligned with the maximum horizontal stress, with some variations in azimuth, and that wide variations in height and length growth occurred with continued injections. These experiments show that the cuttings injection process can be adequately monitored from a downhole, wireline-run receiver array, thus providing process control and environmental assurance. JF - Proceedings - Symposium on Rock Mechanics AU - Warpinski, Norm R AU - Branagan, P T AU - Mahrer, K D AU - Wolhart, S L AU - Moschovidis, Zissis A A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1025 EP - 1032 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - Oklahoma KW - monitoring KW - Mounds Oklahoma KW - site exploration KW - microseisms KW - injection KW - waste disposal sites KW - waste disposal KW - cuttings KW - 30:Engineering geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126913?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Microseismic+monitoring+of+the+Mounds+drill+cuttings+injection+tests&rft.au=Warpinski%2C+Norm+R%3BBranagan%2C+P+T%3BMahrer%2C+K+D%3BWolhart%2C+S+L%3BMoschovidis%2C+Zissis+A&rft.aulast=Warpinski&rft.aufirst=Norm&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1025&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 14 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - cuttings; injection; microseisms; monitoring; Mounds Oklahoma; Oklahoma; site exploration; United States; waste disposal; waste disposal sites ER - TY - JOUR T1 - Rock mechanics and the construction of the tunnel sealing experiment AN - 52126854; 2002-026757 AB - A major international experiment, demonstrating full-scale tunnel sealing technologies and methodologies is being conducted on the 420 Level of Canada's Underground Research Laboratory (URL) with experiment partners from Canada, Japan, France and the USA. The Tunnel Sealing Experiment consists of two instrumented bulkheads, one of low heat high performance concrete, the other of highly compacted bentonite-sand blocks which seal a central section of the tunnel filled with permeable sand. The central portion will be pressurized incrementally via piping water through boreholes to 4 MPa, to characterize the performance of the bulkheads in preventing axial flow along the tunnel. The bulkheads were designed with cut-off keys to stop flow through the excavation damage zone. The design of these keys required a thorough understanding of the in situ stress tensor. The role of rock mechanics in the design of the Tunnel Sealing Experiment is reviewed along with the construction of this experiment. JF - Proceedings - Symposium on Rock Mechanics AU - Martino, J B AU - Chandler, N A A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 885 EP - 892 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - in situ KW - bentonite KW - stress KW - sandstone KW - Pinawa Manitoba KW - Manitoba KW - excavations KW - Underground Research Laboratory KW - rock mechanics KW - radioactive waste KW - sedimentary rocks KW - claystone KW - Canada KW - tunnels KW - Western Canada KW - waste disposal KW - construction KW - clastic rocks KW - underground disposal KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126854?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Rock+mechanics+and+the+construction+of+the+tunnel+sealing+experiment&rft.au=Martino%2C+J+B%3BChandler%2C+N+A&rft.aulast=Martino&rft.aufirst=J&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=885&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 7 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - bentonite; Canada; clastic rocks; claystone; construction; excavations; in situ; Manitoba; Pinawa Manitoba; radioactive waste; rock mechanics; sandstone; sedimentary rocks; stress; tunnels; underground disposal; Underground Research Laboratory; waste disposal; Western Canada ER - TY - JOUR T1 - Initial stress measurements in the exploratory studies facility Yucca Mountain, Nevada AN - 52126819; 2002-026740 AB - We conducted five hydraulic fracturing in situ stress measurements in a 30 m deep test-hole drilled from the main drift of the Exploratory Studies Facility, Yucca Mountain, Nevada. The objective of the in situ stress measurements was to define magnitudes and directions of the principal in situ stresses for the design and performance assessment of the future high level nuclear waste repository site. The vertical stress, sigma (sub v) , was estimated from the weight of the volcanic tuff overlying the test-hole to be 4.7 MPa. The hydraulic fracturing tests yield two principal horizontal stresses as follows: sigma (sub h) = 1.7 (+ or -0.1) MPa acting at N75 degrees W (+ or -14 degrees ); sigma (sub H) = 2.9 (+ or -0.4) MPa acting at N15 degrees E (+ or -14 degrees ). The measured stress regime reveals that both horizontal stresses are clearly smaller than the vertical stress, suggesting normal faulting stress regime. This inference is supported by the local predominance of generally N-S trending normal faults related to the Basin and Range Province. Stress indicators such as fault slip and earthquake focal mechanism data around Yucca Mountain also indicate normal faulting stress regime with the minimum horizontal stress generally oriented at E-W. JF - Proceedings - Symposium on Rock Mechanics AU - Lee, M Y AU - Haimson, B C A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 743 EP - 750 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - hydraulic fracturing KW - focal mechanism KW - volcanic rocks KW - in situ KW - welded tuff KW - site exploration KW - igneous rocks KW - stress KW - Nye County Nevada KW - rock mechanics KW - measurement KW - pyroclastics KW - Yucca Mountain KW - earthquakes KW - Nevada KW - hydrostatic pressure KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126819?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Initial+stress+measurements+in+the+exploratory+studies+facility+Yucca+Mountain%2C+Nevada&rft.au=Lee%2C+M+Y%3BHaimson%2C+B+C&rft.aulast=Lee&rft.aufirst=M&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=743&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 9 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - earthquakes; focal mechanism; hydraulic fracturing; hydrostatic pressure; igneous rocks; in situ; measurement; Nevada; Nye County Nevada; pyroclastics; rock mechanics; site exploration; stress; United States; volcanic rocks; welded tuff; Yucca Mountain ER - TY - JOUR T1 - Multiaxial failure criterion with time and size effects for intact rock AN - 52126785; 2002-026728 AB - This paper deals with the short term and long term failure strength of rocks, and with a general criterion introduced to describe both limiting conditions. It is also shown how the criterion can be extended to take into account the effect of time and of specimen scale. Applications of the criterion are illustrated using various experimental data taken from the literature. JF - Proceedings - Symposium on Rock Mechanics AU - Li, L AU - Aubertin, M AU - Simon, R A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 653 EP - 659 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - failures KW - brittle materials KW - time factor KW - loading KW - mechanical properties KW - mathematical models KW - compressive strength KW - triaxial tests KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126785?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Multiaxial+failure+criterion+with+time+and+size+effects+for+intact+rock&rft.au=Li%2C+L%3BAubertin%2C+M%3BSimon%2C+R&rft.aulast=Li&rft.aufirst=L&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=653&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 34 N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - brittle materials; compressive strength; failures; loading; mathematical models; mechanical properties; rock mechanics; time factor; triaxial tests ER - TY - JOUR T1 - A new strata control concept; a groutable friction tube support system AN - 52126747; 2002-026724 AB - A new concept for a groutable friction tube which provides early support and similar ease of installation to current friction tubes but with the advantage of high pull-out strength and protection against corrosion, has been investigated in a series of laboratory tests. The device is able to sustain loads while undergoing large axial displacements and could act as a grout tube for grouting the surrounding rock mass. Although the device has not been tested in shear it is expected to have high shear resistance. Pull-out strength and maximum axial displacements before ultimate pull-out can be controlled by the type of grout or by design of the tube. JF - Proceedings - Symposium on Rock Mechanics AU - Stimpson, B A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 625 EP - 628 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - rock masses KW - strength KW - loading KW - shear KW - reinforced materials KW - friction KW - grouting KW - displacements KW - faults KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126747?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=A+new+strata+control+concept%3B+a+groutable+friction+tube+support+system&rft.au=Stimpson%2C+B&rft.aulast=Stimpson&rft.aufirst=B&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=625&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 1 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - displacements; faults; friction; grouting; loading; reinforced materials; rock masses; rock mechanics; shear; strength ER - TY - JOUR T1 - 37th U.S. rock mechanics symposium on Rock mechanics for industry AN - 52126716; 2002-026717 JF - Proceedings - Symposium on Rock Mechanics A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 577 EP - 1250 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - symposia KW - report KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126716?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=conference&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=37th+U.S.+rock+mechanics+symposium+on+Rock+mechanics+for+industry&rft.au=&rft.aulast=&rft.aufirst=&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=577&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Document feature - illus. N1 - SuppNotes - Individual papers are cited separately; Vol. 2 of two volumes N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - report; rock mechanics; symposia ER - TY - JOUR T1 - Erosion of rock by hydraulic forces AN - 52126514; 2002-026801 AB - The paper summarizes the essence of the Erodibility Index Method and presents the results of two case studies pertaining to its application. The method can be used to predict erodibility of rock and to calculate scour depth. JF - Proceedings - Symposium on Rock Mechanics AU - Annandale, G W A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1243 EP - 1247 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - scour KW - hydraulic fracturing KW - collapse structures KW - erosion KW - soft rocks KW - Montgomery County New York KW - Schoharie Creek Bridge KW - Sun River KW - mathematical models KW - rock mechanics KW - Montana KW - Gibson Dam KW - New York KW - dams KW - slope stability KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126514?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Erosion+of+rock+by+hydraulic+forces&rft.au=Annandale%2C+G+W&rft.aulast=Annandale&rft.aufirst=G&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1243&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 7 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - collapse structures; dams; erosion; Gibson Dam; hydraulic fracturing; mathematical models; Montana; Montgomery County New York; New York; rock mechanics; Schoharie Creek Bridge; scour; slope stability; soft rocks; Sun River; United States ER - TY - JOUR T1 - Monitored hydromechanical behavior of concrete gravity dam foundations AN - 52126483; 2002-026800 AB - In the last twenty years, considerable effort has been made to understand basic mechanisms controlling coupled flow and deformation behavior of rock mass discontinuities. More recently, several studies have been carried out to assess the hydromechanical behavior in dam foundations as the reservoir is raised. Monitoring of well instrumented dam foundations during reservoir filling can be construed as a full scale coupled hydromechanical shear test of governing rock mass discontinuities. Observations and measurements at two key dams are presented and evaluated in this paper. These observations indicate that foundation rock discontinuities experience considerable deformation and concurrent increase in pore pressures above a certain reservoir level, resulting in a non elastic behavior. Important factors that control this behavior are joint attitude and hydromechanical parameters as well as the shape of the dam, site geology and depth and type of foundation treatments. JF - Proceedings - Symposium on Rock Mechanics AU - Gimenes, E de A AU - Fernandez, G AU - Abdulamit, A A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1235 EP - 1241 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - rock masses KW - hydraulic fracturing KW - monitoring KW - mechanical properties KW - Europe KW - deformation KW - Hungry Horse Dam KW - Switzerland KW - Montana KW - case studies KW - foundations KW - concrete dams KW - Albigna Dam KW - Central Europe KW - dams KW - gravity dams KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126483?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Monitored+hydromechanical+behavior+of+concrete+gravity+dam+foundations&rft.au=Gimenes%2C+E+de+A%3BFernandez%2C+G%3BAbdulamit%2C+A&rft.aulast=Gimenes&rft.aufirst=E+de&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1235&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 15 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Albigna Dam; case studies; Central Europe; concrete dams; dams; deformation; Europe; foundations; gravity dams; Hungry Horse Dam; hydraulic fracturing; mechanical properties; monitoring; Montana; rock masses; Switzerland; United States ER - TY - JOUR T1 - A 3D fracture simulator for soft formation AN - 52126448; 2002-026780 AB - The simulator is based on an elastic fracture opening equation, a power-law fluid flow equation, and a proppant transport equation. The fluid indices are empirical functions of the proppant concentration and temperature. The finite element method is applied to carry out the calculation. Simulated results show that the fracture grows initially without proppant. As pumping continues, proppant screens out at the fracture tip arresting further fracture growth, and thereafter the fracture width becomes wider and the net borehole pressure increases rapidly as proppant concentration inside the fracture increases. In general, the fracture opening width increases with decrease of rock modulus and fluid leakoff rate, but the relationship is not linear. The distribution of proppant inside the fracture affects significantly the size and the opening width of the fracture. JF - Proceedings - Symposium on Rock Mechanics AU - Ma, M J AU - Yew, C H A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1079 EP - 1084 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - three-dimensional models KW - soft rocks KW - elastic properties KW - statistical analysis KW - elastic constants KW - hydraulic pressure KW - simulation KW - rock mechanics KW - flows KW - fractures KW - finite element analysis KW - permeability KW - Young's modulus KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126448?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=A+3D+fracture+simulator+for+soft+formation&rft.au=Ma%2C+M+J%3BYew%2C+C+H&rft.aulast=Ma&rft.aufirst=M&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1079&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 10 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - elastic constants; elastic properties; finite element analysis; flows; fractures; hydraulic pressure; permeability; rock mechanics; simulation; soft rocks; statistical analysis; three-dimensional models; Young's modulus ER - TY - JOUR T1 - Determining hydraulic fracture behavior using microseismicity AN - 52126384; 2002-026770 AB - Temporal-spatial variations in event locations and in frequency-magnitude parameters (seismic activity level and b-value) are evaluated for a catalogue of 994 microseismic events (-1.9 or =-0.2) associated with the Cotton Valley (East Texas, USA) fracture treatment of May 14, 1997. The treatment was carried out between 2756 and 2838 m depth and consisted of three separate injection phases. Event locations were obtained based on P- and/or S-wave arrivals and direction vectors, to an accuracy of 14 to 24 m. Spatially, the event locations were contained within the perforation interval, and outlined a hydraulic fracture 560 m in length and 60 m in width, that was symmetric about the treatment well (TW), and followed the predicted N70E trend. Nearly 50% of the events occurred over the short interval 90 m to 120 m east of TW. Over this interval, b-values, as calculated between-1.5 or =-0.4, were above 1 during the initial two injections, and seismic activity levels, evaluated at M = -0.8, increased relative to other parts of the fracture. During the third injection, the fracture growth eastwards was accompanied by b-values above 1. To the west of TW, b-values ranged from 0.5 to 1 for all three injections, however, the third injection was accompanied by an increase in seismic activity. Based on these observations, we suggest that microseismic event locations can be used to define the overall dimensions of the hydraulic fracture, and that frequency-magnitude parameters can potentially be used to identify differences in fracture growth and failure mechanisms. JF - Proceedings - Symposium on Rock Mechanics AU - Urbancic, T I AU - Shumila, V AU - Rutledge, J T AU - Zinno, R J A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 991 EP - 997 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - Panola County Texas KW - P-waves KW - sandstone KW - mapping KW - elastic waves KW - seismic response KW - triaxial tests KW - rock mechanics KW - reservoir rocks KW - Cotton Valley KW - sedimentary rocks KW - East Texas KW - microseisms KW - fracture strength KW - hydraulic fracturing KW - failures KW - body waves KW - monitoring KW - Texas KW - deformation KW - Carthage Cotton Valley Field KW - seismic waves KW - clastic rocks KW - S-waves KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126384?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Determining+hydraulic+fracture+behavior+using+microseismicity&rft.au=Urbancic%2C+T+I%3BShumila%2C+V%3BRutledge%2C+J+T%3BZinno%2C+R+J&rft.aulast=Urbancic&rft.aufirst=T&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=991&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 13 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - body waves; Carthage Cotton Valley Field; clastic rocks; Cotton Valley; deformation; East Texas; elastic waves; failures; fracture strength; hydraulic fracturing; mapping; microseisms; monitoring; P-waves; Panola County Texas; reservoir rocks; rock mechanics; S-waves; sandstone; sedimentary rocks; seismic response; seismic waves; Texas; triaxial tests; United States ER - TY - JOUR T1 - Performance prediction for small diameter hard-rock tunneling AN - 52126335; 2002-026765 AB - By correlating standardized rock strength and elastic constant properties to historical linear cutting test data for 3 different sized disc-cutters in 10 different hard-rocks, a rock cuttability index (RCI) is developed. This RCI is at least comparable and shows evidence of being superior to the unconfined compressive strength (UCS) for indicating a rocks resistance to disc based excavation. The results from 3 different sized cutterhead tests in 5 rock samples were then examined to determine the usefulness of the RCI. By utilizing the RCI or the UCS to determine the resistance to excavation of the rock, a linear relationship was discovered between the horsepower to cutterhead diameter ratio and the excavation efficiency of the cutterhead. This relationship allows a contractor to accurately estimate machine advance rates from a small sample of core. JF - Proceedings - Symposium on Rock Mechanics AU - Frank, G D A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 949 EP - 956 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - elastic properties KW - tunnels KW - prediction KW - compressive strength KW - excavations KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126335?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Performance+prediction+for+small+diameter+hard-rock+tunneling&rft.au=Frank%2C+G+D&rft.aulast=Frank&rft.aufirst=G&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=949&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 13 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - compressive strength; elastic properties; excavations; prediction; rock mechanics; tunnels ER - TY - JOUR T1 - Geotechnical site characterizations in localized probabilistic terms AN - 52126283; 2002-026747 AB - Probabilistic modeling of geotechnical strength parameters for large scale in-situ characterization of geological formations is presented in this paper. The actual measurements of strength parameters from a limited sample test (hard data) are combined with other sources of information (subjective soft data) to characterize the localized probabilistic model of in-situ strength parameters. The sequential Gaussian co-simulation technique was introduced to achieve the localized probabilistic characterization of in-situ strength parameters. The bivariate probability distribution was applied for the probabilistic joint model of strength parameters (c-phi ). In other words, the full statistical distribution of strength parameters are obtainable for every local point within the geological domain. These localized probabilistic models provide the necessary input for probabilistic structural analysis, such structures as slopes, dams, foundations or underground openings, where c and phi are applied for the structural design. JF - Proceedings - Symposium on Rock Mechanics AU - Pumjan, S AU - Young, D S A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 801 EP - 808 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - soil mechanics KW - Far East KW - density KW - Thailand KW - strength KW - site exploration KW - Lampang Thailand KW - statistical analysis KW - friction KW - cohesive materials KW - case studies KW - Mae Moh Mine KW - shear tests KW - probability KW - Asia KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126283?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Geotechnical+site+characterizations+in+localized+probabilistic+terms&rft.au=Pumjan%2C+S%3BYoung%2C+D+S&rft.aulast=Pumjan&rft.aufirst=S&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=801&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 8 N1 - Document feature - illus. incl. 4 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Asia; case studies; cohesive materials; density; Far East; friction; Lampang Thailand; Mae Moh Mine; probability; shear tests; site exploration; soil mechanics; statistical analysis; strength; Thailand ER - TY - JOUR T1 - Fracture intensity estimates using circular scanlines AN - 52126244; 2002-026744 AB - This paper presents a simple derivation of the unbiased fracture trace intensity estimator n/4r, where n is the number of intersections between fracture traces and a circular scanline of radius r. The use of circular scanlines eliminates the orientation bias associated with straight scanlines while still achieving the time efficiency of scanlines. Application of the estimator to synthetic and real fracture trace maps is discussed. The utility and efficiency of the circular scanline intensity estimator make it a valuable tool for fracture studies. JF - Proceedings - Symposium on Rock Mechanics AU - Mauldon, M AU - Rohrbaugh, M B, Jr AU - Dunne, W M AU - Lawdermilk, W A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 777 EP - 784 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - fractures KW - style KW - joints KW - mathematical models KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126244?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Fracture+intensity+estimates+using+circular+scanlines&rft.au=Mauldon%2C+M%3BRohrbaugh%2C+M+B%2C+Jr%3BDunne%2C+W+M%3BLawdermilk%2C+W&rft.aulast=Mauldon&rft.aufirst=M&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=777&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 30 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - fractures; joints; mathematical models; rock mechanics; style ER - TY - JOUR T1 - Thermal conductivity as a function of saturation for welded and nonwelded tuff AN - 52126211; 2002-026734 AB - Rock core samples recovered from the proposed repository site at Yucca Mountain, Nevada were used to determine the relationship between thermal conductivity and saturation state for both welded and nonwelded tuffs. Welded tuff was taken from Alcove 5 of the Exploratory Studies Facility at Yucca Mountain, and nonwelded tuffs from four lithostratigraphic units were obtained from the USW SD-7, USW SD-9, and USW SD-12 drillholes. Thermal conductivities were measured for six welded and six nonwelded specimens under dry, saturated, and approximately ten intermediate moisture conditions. All thermal conductivity tests were conducted at 30 degrees C and at atmospheric pressure. A linear and commonly used nonlinear curve were fitted to the data and the goodness of fit determined. The linear relationship provides a better fit to the data, as indicated by the sum of the squared errors. JF - Proceedings - Symposium on Rock Mechanics AU - Brodsky, N S AU - Barker, G T A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 699 EP - 705 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - high-level waste KW - volcanic rocks KW - welded tuff KW - thermal conductivity KW - igneous rocks KW - thermal properties KW - mathematical models KW - Nye County Nevada KW - rock mechanics KW - radioactive waste KW - pyroclastics KW - sample preparation KW - saturation KW - heat flow KW - tuff KW - waste disposal KW - Yucca Mountain KW - Nevada KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126211?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Thermal+conductivity+as+a+function+of+saturation+for+welded+and+nonwelded+tuff&rft.au=Brodsky%2C+N+S%3BBarker%2C+G+T&rft.aulast=Brodsky&rft.aufirst=N&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=699&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 5 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - heat flow; high-level waste; igneous rocks; mathematical models; Nevada; Nye County Nevada; pyroclastics; radioactive waste; rock mechanics; sample preparation; saturation; thermal conductivity; thermal properties; tuff; United States; volcanic rocks; waste disposal; welded tuff; Yucca Mountain ER - TY - JOUR T1 - Identification of damage mechanisms of rocks by time domain inversion of full waveform AN - 52126164; 2002-026732 AB - A method has been developed for identification of internal damage mechanisms in rock. The method incorporates time domain (damped) least square inversion. The approach uses a long segment of quantitative input made possible by use of an NBS-type high-fidelity sensors. The derivation of this unique approach is given, as are synthetic examples which show that source functions can be identified effectively through this method. If the source is contained within the sensor array, the estimated source functions contain less noise than if the source is outside the array. The beginning part of the estimated source functions is unbiased. The estimate for the trailing segment is biased for the case of weak P-wave arrival, and is less biased for strong P-wave arrival. JF - Proceedings - Symposium on Rock Mechanics AU - Ching, J Y AU - Glaser, S D A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 683 EP - 688 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - P-waves KW - body waves KW - acoustical properties KW - propagation KW - mathematical models KW - elastic waves KW - waveforms KW - seismic waves KW - deformation KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126164?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Identification+of+damage+mechanisms+of+rocks+by+time+domain+inversion+of+full+waveform&rft.au=Ching%2C+J+Y%3BGlaser%2C+S+D&rft.aulast=Ching&rft.aufirst=J&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=683&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 8 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - acoustical properties; body waves; deformation; elastic waves; mathematical models; P-waves; propagation; rock mechanics; seismic waves; waveforms ER - TY - JOUR T1 - Analysis of roof failure in Salamander Cave, Indiana AN - 52126144; 2002-026797 AB - The immediate roof of the Flat Room in Salamander Cave is a large, irregularly shaped plate that has pulled away from the overlying strata and is extensively cracked, but remains attached to the walls of the cave. It is analyzed by a time-dependent, cracked beam-column finite element program and by a plate and plane stress finite element program with load coupling to model cracking. Both codes predict deep cracks in the upper surface of the plate where it is fixed to the walls. They also predict extensive cracking in one region of the lower, observable surface of the plate. The observed roof cracks are strongly influenced by pre-existing joints. The analyses suggest that long-term (1 million year) compressive strength is not exceeded even in cracked sections, and that the roof is stable. JF - Proceedings - Symposium on Rock Mechanics AU - Tharp, Thomas M AU - Holdrege, Thomas J A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1213 EP - 1220 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - limestone KW - Mississippian KW - columnar joints KW - site exploration KW - roof control KW - joints KW - oolitic limestone KW - rock mechanics KW - fractures KW - finite element analysis KW - sedimentary rocks KW - style KW - Sainte Genevieve Limestone KW - Indiana KW - Upper Mississippian KW - Paleozoic KW - statistical analysis KW - Carboniferous KW - Salamander Cave KW - cracks KW - compressive strength KW - carbonate rocks KW - Meramecian KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126144?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Analysis+of+roof+failure+in+Salamander+Cave%2C+Indiana&rft.au=Tharp%2C+Thomas+M%3BHoldrege%2C+Thomas+J&rft.aulast=Tharp&rft.aufirst=Thomas&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1213&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 17 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - carbonate rocks; Carboniferous; columnar joints; compressive strength; cracks; finite element analysis; fractures; Indiana; joints; limestone; Meramecian; Mississippian; oolitic limestone; Paleozoic; rock mechanics; roof control; Sainte Genevieve Limestone; Salamander Cave; sedimentary rocks; site exploration; statistical analysis; style; United States; Upper Mississippian ER - TY - JOUR T1 - Numerical simulation of progressive failure from underground bulk mining operations AN - 52126115; 2002-026781 AB - This paper presents the development of a method which can be used to evaluate the progressive failure of the hanging wall and footwall rock mass related to underground bulk mining of a steeply dipping ore body. The method presented is unique to rock mechanics applications and provides a relatively simple tool that can be used for mine planning and stability assessments. The application of the method is illustrated with site data and observations from an actual mine. JF - Proceedings - Symposium on Rock Mechanics AU - Lupo, John F A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1085 EP - 1090 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - rock masses KW - mining KW - failures KW - numerical models KW - geologic hazards KW - underground mining KW - prediction KW - land subsidence KW - deformation KW - simulation KW - rock mechanics KW - discontinuities KW - mining geology KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126115?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Numerical+simulation+of+progressive+failure+from+underground+bulk+mining+operations&rft.au=Lupo%2C+John+F&rft.aulast=Lupo&rft.aufirst=John&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1085&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 11 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - deformation; discontinuities; failures; geologic hazards; land subsidence; mining; mining geology; numerical models; prediction; rock masses; rock mechanics; simulation; underground mining ER - TY - JOUR T1 - Differential wall rock movements associated with rock bursts, Lucky Friday Mine, Coeur d'Alene Mining District, Idaho, USA AN - 52126083; 2002-026777 AB - Various methods of monitoring slip movements on bedding planes, as well as examination of rock burst damage in stopes, suggests that rock bursts in the Lucky Friday Mine are closely associated with these movements. Slip displacements along bedding simultaneously reduce the physical dimensions of stopes and increase compressive stress along stope margins. Such changes, in turn, contribute directly to rock bursts and the sudden failure of volumes of rock and cemented sandfill surrounding stopes. The distribution of seismicity and several mining-induced and premining structures resemble those described in South African gold mines. These suggest fundamental similarities in seismic sources and mechanisms of rock burst damage. JF - Proceedings - Symposium on Rock Mechanics AU - White, B G AU - Whyatt, J K A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1051 EP - 1059 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - Idaho KW - argillite KW - monitoring KW - geologic hazards KW - site exploration KW - Lucky Friday Mine KW - rock mechanics KW - sedimentary rocks KW - Coeur d'Alene mining district KW - seismicity KW - rock bursts KW - wall rocks KW - clastic rocks KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126083?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Differential+wall+rock+movements+associated+with+rock+bursts%2C+Lucky+Friday+Mine%2C+Coeur+d%27Alene+Mining+District%2C+Idaho%2C+USA&rft.au=White%2C+B+G%3BWhyatt%2C+J+K&rft.aulast=White&rft.aufirst=B&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1051&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 12 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - argillite; clastic rocks; Coeur d'Alene mining district; geologic hazards; Idaho; Lucky Friday Mine; monitoring; rock bursts; rock mechanics; sedimentary rocks; seismicity; site exploration; United States; wall rocks ER - TY - JOUR T1 - Fracture network geometry and relative permeability AN - 52126053; 2002-026751 AB - This paper presents the results from a numerical investigation of the multiphase flow properties of fracture networks. A stratified percolation algorithm was used to generate individual fractures with spatially correlated and uncorrelated aperture distributions. These fractures were arranged on a cubic lattice to produce a fracture network with intersections. The relative permeabilities of the resultant fracture network were determined using an efficient network flow model. Statistical flow properties of the fracture networks were obtained by examining the results of a large number of realizations from each fracture network configuration. In general, networks of uncorrelated fractures were observed to have lower non-wetting saturations at cross-over than correlated fractures. Numerical fracture networks containing fractures with a range of average apertures were found to most closely approximate experimentally determined values of relative permeability of coal cores. JF - Proceedings - Symposium on Rock Mechanics AU - Morris, J P AU - Pyrak-Nolte, L J A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 835 EP - 842 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - hydrology KW - fractures KW - sedimentary rocks KW - hydraulics KW - viscosity KW - three-dimensional models KW - coal KW - multiphase flow KW - percolation KW - permeability KW - two-dimensional models KW - 30:Engineering geology KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126053?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Fracture+network+geometry+and+relative+permeability&rft.au=Morris%2C+J+P%3BPyrak-Nolte%2C+L+J&rft.aulast=Morris&rft.aufirst=J&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=835&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 14 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - coal; fractures; hydraulics; hydrology; multiphase flow; percolation; permeability; sedimentary rocks; three-dimensional models; two-dimensional models; viscosity ER - TY - JOUR T1 - Characterizing fracture-zone flow using numerical flow-log models AN - 52126018; 2002-026749 AB - Water-quality monitoring and hydraulic testing in fractured bedrock aquifers involves two important tasks: 1) identifying the hydraulically active fractures intersecting the borehole; and 2) inferring how the specific entry or exit ports in the borehole wall are connected to large-scale flow paths in the region surrounding the borehole. Effective characterization of fractured bedrock flow results when hydraulically active fractures and fracture zones are first identified using flow logs, and then the hydraulic properties of these active zones are given by subsequent hydraulic tests. A more difficult technical problem is relating the hydraulic properties of the few specific fractures that serve as borehole entry ports to the large-scale hydraulic properties of the surrounding rock mass. This problem is addressed through a generalized borehole flow model inversion formulated so that the boundary conditions at the outer edge of the boundary layer can be inferred from the properties of measured borehole flow. JF - Proceedings - Symposium on Rock Mechanics AU - Paillet, F L A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 819 EP - 826 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - limestone KW - bedrock KW - water quality KW - monitoring KW - hydraulics KW - numerical models KW - ground water KW - flows KW - aquifers KW - fractures KW - sedimentary rocks KW - carbonate rocks KW - boundary layer KW - 30:Engineering geology KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52126018?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Characterizing+fracture-zone+flow+using+numerical+flow-log+models&rft.au=Paillet%2C+F+L&rft.aulast=Paillet&rft.aufirst=F&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=819&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 15 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - aquifers; bedrock; boundary layer; carbonate rocks; flows; fractures; ground water; hydraulics; limestone; monitoring; numerical models; sedimentary rocks; water quality ER - TY - JOUR T1 - Effect of single heater test on intact rock properties at Yucca Mountain, Nevada AN - 52125987; 2002-026735 AB - As part of ongoing investigations into locating a repository at Yucca Mountain Nevada, two in situ heated tests have been fielded underground at the Exploratory Studies Facility. The first of these tests utilized a single heater to elevate the temperature of a 13 m wide, 5.5. m tall, 8.5 m deep block that was exposed on three sides and attached on one side, on the top, and on the bottom. The objective of the work described here was to assess changes in thermal and mechanical properties of intact rock occurring as a result of conducting this in situ test. JF - Proceedings - Symposium on Rock Mechanics AU - Brodsky, N S AU - Barker, G T A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 707 EP - 714 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - thermal conductivity KW - thermal properties KW - mechanical properties KW - elastic constants KW - Nye County Nevada KW - thermal expansion KW - rock mechanics KW - isotherms KW - heat flow KW - Yucca Mountain KW - thermal effects KW - Nevada KW - Young's modulus KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125987?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Effect+of+single+heater+test+on+intact+rock+properties+at+Yucca+Mountain%2C+Nevada&rft.au=Brodsky%2C+N+S%3BBarker%2C+G+T&rft.aulast=Brodsky&rft.aufirst=N&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=707&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 9 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - elastic constants; heat flow; isotherms; mechanical properties; Nevada; Nye County Nevada; rock mechanics; thermal conductivity; thermal effects; thermal expansion; thermal properties; United States; Young's modulus; Yucca Mountain ER - TY - JOUR T1 - Stabilization of Candide landslide AN - 52125554; 2002-026796 AB - The stabilization works for the precarious slope of Candide (northern Italy) are illustrated. The terrain varies from a deep rocky facies made of sericitic and chloritic phyllites to a surficial facies composed of a chaotic mixture of schist chunks and phyllitic blocks highly rich in quartz. Characterized by a slow viscoplastic movement, a landslide made the central-lower part of the village so hazardous that every building and infrastructure was destroyed in the time span of a century, with a threat to involve the entire village. The main components of the intervention are reinforced concrete beams resting on closely-spaced 40-m-long micropiles and horizontally constrained by 40-m-long anchors. Drains and environmental design works rehabilitated the area from a pedologic point of view. After the works' completion, the monitoring system revealed that the landslide stopped its destructive movement, at variance with many other similar landslides in the same province. JF - Proceedings - Symposium on Rock Mechanics AU - Mammino, A AU - Tonon, F A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1205 EP - 1212 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - phyllites KW - northern Italy KW - mathematical models KW - Europe KW - Italy KW - Southern Europe KW - remediation KW - landslides KW - Veneto Italy KW - metamorphic rocks KW - mass movements KW - slope stability KW - Candide Italy KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125554?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Stabilization+of+Candide+landslide&rft.au=Mammino%2C+A%3BTonon%2C+F&rft.aulast=Mammino&rft.aufirst=A&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1205&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 5 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Candide Italy; Europe; Italy; landslides; mass movements; mathematical models; metamorphic rocks; northern Italy; phyllites; remediation; slope stability; Southern Europe; Veneto Italy ER - TY - JOUR T1 - The Mounds drill cuttings injection field experiment AN - 52125524; 2002-026773 AB - This paper describes the data acquired during a comprehensive, joint-industry field experiment to improve the understanding of the mechanics and modeling of the processes involved in the downhole injection of drill cuttings. Disposal of drill cuttings is of importance from both economic and environmental perspectives. The paper provides the field setting where the experiment was conducted, the formations selected for injection, the technical scope of work, the series of experiments conducted, and data acquired. The project consisted of three phases completed in 1998: drilling of the injection well and two observation wells, conducting about 20 intermittent cuttings-slurry injections into each of two disposal formations while imaging the created fractures from the observation wells, and coring through the imaged disposal zones by sidetracks from one of the observation wells. JF - Proceedings - Symposium on Rock Mechanics AU - Moschovidis, Zissis A AU - Steiger, Ronald P AU - Weng, Xiaowei AU - Frankl, Matt AU - Abou-Sayed, Ahmed S AU - Fleming, Carole AU - Wolhart, Steve AU - McDaniel, Buddy AU - Sinor, Allen AU - Ottesen, Steinar AU - Herbert, Terry AU - Wright, Chris AU - Warpinski, Norm R AU - Beecher, Reid AU - Dudley, John AU - Zinno, Dick AU - Akhmedov, Oktay A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1017 EP - 1024 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - shale KW - injection KW - sandstone KW - cuttings KW - Oklahoma KW - sedimentary rocks KW - Mounds Oklahoma KW - drilling KW - waste disposal KW - clastic rocks KW - field studies KW - 30:Engineering geology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125524?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=The+Mounds+drill+cuttings+injection+field+experiment&rft.au=Moschovidis%2C+Zissis+A%3BSteiger%2C+Ronald+P%3BWeng%2C+Xiaowei%3BFrankl%2C+Matt%3BAbou-Sayed%2C+Ahmed+S%3BFleming%2C+Carole%3BWolhart%2C+Steve%3BMcDaniel%2C+Buddy%3BSinor%2C+Allen%3BOttesen%2C+Steinar%3BHerbert%2C+Terry%3BWright%2C+Chris%3BWarpinski%2C+Norm+R%3BBeecher%2C+Reid%3BDudley%2C+John%3BZinno%2C+Dick%3BAkhmedov%2C+Oktay&rft.aulast=Moschovidis&rft.aufirst=Zissis&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1017&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 6 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - clastic rocks; cuttings; drilling; field studies; injection; Mounds Oklahoma; Oklahoma; sandstone; sedimentary rocks; shale; United States; waste disposal ER - TY - JOUR T1 - Assessing the disturbed rock zone (DRZ) around a 665 meter vertical shaft in salt using ultrasonic waves AN - 52125473; 2002-026767 AB - An array of ultrasonic transducers was constructed consisting of three identical sub-arrays at various depths in an air intake shaft at the Waste Isolation Pilot Plant (WIPP). Each sub-array consists of transducers permanently installed in three holes arranged in an "L" shape. By appropriate arrangement of the transducers and selection of transmitter-receiver pairs, an active array was created that would allow the measurement of transmitted signal velocities and amplitudes (for attenuation studies) along 270 paths parallel, perpendicular and tangential to the shaft walls. Installation occurred over a period of about two years beginning in early 1989, with nearly continuous operation since that time. We now have up to eight years of data relating to the time-dependent deformation of in situ salt under well known boundary conditions at various stress levels determined by the three installation depths. Results show changes in elastic wave velocity as function of vertical depth, distance from shaft wall and orientation. JF - Proceedings - Symposium on Rock Mechanics AU - Holcomb, D J A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 965 EP - 972 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - halides KW - chemically precipitated rocks KW - Eddy County New Mexico KW - site exploration KW - data acquisition KW - data processing KW - extensometers KW - elastic waves KW - New Mexico KW - evaporites KW - ultrasonic methods KW - halite KW - rock mechanics KW - sedimentary rocks KW - cracks KW - chlorides KW - Waste Isolation Pilot Plant KW - underground disposal KW - salt KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125473?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Assessing+the+disturbed+rock+zone+%28DRZ%29+around+a+665+meter+vertical+shaft+in+salt+using+ultrasonic+waves&rft.au=Holcomb%2C+D+J&rft.aulast=Holcomb&rft.aufirst=D&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=965&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 5 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - chemically precipitated rocks; chlorides; cracks; data acquisition; data processing; Eddy County New Mexico; elastic waves; evaporites; extensometers; halides; halite; New Mexico; rock mechanics; salt; sedimentary rocks; site exploration; ultrasonic methods; underground disposal; United States; Waste Isolation Pilot Plant ER - TY - JOUR T1 - Urban rockfall hazard and mitigation cost rating AN - 52125445; 2002-026799 AB - A structured approach was used to objectively rank rockfall hazard for approximately 6,000 linear feet of rock cut slope in downtown Hot Springs, Arkansas. The methodology was modeled after the Rockfall Hazard Rating System developed for the Federal Highway Administration and modified to better suit the urban commercial and residential environment. The rating system includes the following input: slope height; distance of cultural feature from the toe of the slope; occupancy frequency; existing mitigation measures; rockfall history; water pressure estimates based on visual observations; the location of observed joints relative to each other and to the slope face; and stability analysis. The output is a Rockfall Hazard Rating (RHR) for individual slope sections. Mitigation costs were estimated for slope sections based on reconnaissance level designs and unit costs, factored by an access-type rating. The independent evaluation of RHR and mitigation cost for individual slope sections provides a basis for targeting limited resources towards optimal risk reduction in a complex urban setting. JF - Proceedings - Symposium on Rock Mechanics AU - Anderson, Scott A AU - King, Timothy J AU - Schloner, Mitchell A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1229 EP - 1234 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - Hot Springs KW - rockfalls KW - geologic hazards KW - shale KW - sandstone KW - Rockfall Hazard Rating System KW - cost KW - conglomerate KW - urban environment KW - mitigation KW - sedimentary rocks KW - mass movements KW - novaculite KW - slope stability KW - clastic rocks KW - Arkansas KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125445?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Urban+rockfall+hazard+and+mitigation+cost+rating&rft.au=Anderson%2C+Scott+A%3BKing%2C+Timothy+J%3BSchloner%2C+Mitchell&rft.aulast=Anderson&rft.aufirst=Scott&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1229&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 2 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Arkansas; clastic rocks; conglomerate; cost; geologic hazards; Hot Springs; mass movements; mitigation; novaculite; Rockfall Hazard Rating System; rockfalls; sandstone; sedimentary rocks; shale; slope stability; United States; urban environment ER - TY - JOUR T1 - Mean fracture trace length and density estimators using circular windows AN - 52125434; 2002-026745 AB - Mean fracture trace length and trace density are important parameters in the characterization of fractured rock with applications in hydrogeology, oil recovery and rock engineering. Estimating these parameters from field data is beset with problems due to censoring and length bias. The paper presents simple distribution-free estimators for mean trace length and density that automatically correct for sampling bias. The estimators use samples collected with circular windows placed at random on exposed pavements or rock surfaces. Use of the estimators is demonstrated by application to synthetic and real data sets. JF - Proceedings - Symposium on Rock Mechanics AU - Mauldon, M AU - Rohrbaugh, M B, Jr AU - Dunne, W M AU - Lawdermilk, W A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 785 EP - 792 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - fractures KW - density KW - windows KW - deformation KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125434?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Mean+fracture+trace+length+and+density+estimators+using+circular+windows&rft.au=Mauldon%2C+M%3BRohrbaugh%2C+M+B%2C+Jr%3BDunne%2C+W+M%3BLawdermilk%2C+W&rft.aulast=Mauldon&rft.aufirst=M&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=785&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 34 N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - deformation; density; fractures; rock mechanics; windows ER - TY - JOUR T1 - Measurement and modelling of in situ rock stresses in the Ambin Massif, Franco-Italian Alps AN - 52125414; 2002-026790 AB - This paper presents the results of stress measurements (HTPF method) made in 4 deep exploratory boreholes for the future base tunnel of the high speed railway project Lyon-Turin (Franco-Italian Alps). With respect to the expected values due to gravity forces alone, the results in the heart of the Ambin Massif globally show a marked deficit of vertical stress, and an excess of horizontal stress. The analysis of these results has been performed by using numerical 2D and 3D modeling, to study the respective influence of local topography and of global tectonic stresses on the natural stress field. JF - Proceedings - Symposium on Rock Mechanics AU - Mayeur, B AU - Fabre, D A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1157 EP - 1163 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - Turin Italy KW - Ambin Tunnel KW - site exploration KW - Savoie France KW - Alps KW - Rhone France KW - Lyons France KW - Europe KW - Italy KW - Southern Europe KW - rock mechanics KW - France KW - tunnels KW - metamorphic rocks KW - tectonics KW - gneisses KW - Western Europe KW - in situ KW - three-dimensional models KW - schists KW - stress KW - two-dimensional models KW - Piemonte Italy KW - measurement KW - Ambin Massif KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125414?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Measurement+and+modelling+of+in+situ+rock+stresses+in+the+Ambin+Massif%2C+Franco-Italian+Alps&rft.au=Mayeur%2C+B%3BFabre%2C+D&rft.aulast=Mayeur&rft.aufirst=B&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1157&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 8 N1 - Document feature - illus. incl. 4 tables, sketch map N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Alps; Ambin Massif; Ambin Tunnel; Europe; France; gneisses; in situ; Italy; Lyons France; measurement; metamorphic rocks; Piemonte Italy; Rhone France; rock mechanics; Savoie France; schists; site exploration; Southern Europe; stress; tectonics; three-dimensional models; tunnels; Turin Italy; two-dimensional models; Western Europe ER - TY - JOUR T1 - Size effects in fracture of rock AN - 52125388; 2002-026788 AB - The fracture of rock is influenced by the development of an intrinsic process zone in the form of a localized region of microcracking. This zone has a fundamental importance for defining the system behavior in terms of the post-peak instability and in terms of material strength such that size effects appear. This paper illustrates the change in the load-displacement response and presents evidence of the process-zone development with varying specimen size. It is demonstrated that fracture problems do not require geometric or material nonlinearity to produce instability. The size of a structure that fails by fracture is an important factor. Furthermore, experiments suggest that an intrinsic zone develops in rock as a material characteristic. Because of this intrinsic length, two competing factors define the nominal strength--the positive contribution of the process zone and the depleting aspects of the undamaged volume, that is, the size. JF - Proceedings - Symposium on Rock Mechanics AU - Labuz, Joseph F AU - Biolzi, Luigi A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1137 EP - 1143 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - fractures KW - physical properties KW - cracks KW - strength KW - microcracks KW - loading KW - mathematical models KW - displacements KW - faults KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125388?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Size+effects+in+fracture+of+rock&rft.au=Labuz%2C+Joseph+F%3BBiolzi%2C+Luigi&rft.aulast=Labuz&rft.aufirst=Joseph&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1137&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 22 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - cracks; displacements; faults; fractures; loading; mathematical models; microcracks; physical properties; rock mechanics; strength ER - TY - JOUR T1 - Variations of drift stability at the proposed Yucca Mountain repository AN - 52125387; 2002-026743 AB - Finite-element modeling of the emplacement-drift area of the potential nuclear waste repository at Yucca Mountain, Nevada, indicates significant spatial and temporal variations of drift stability resulting from spatial variation of rock-mass mechanical properties and plausible time-dependent mechanical degradation of the rock mass. Analyses were based on mechanical parameters derived through empirical correlations with rock-mass quality, Q. In the presence of stiff ground support, potential instability is higher in areas of higher Q (within the range of Q values used in the model) and is most intense at the middle of inter-drift pillars. With degraded ground support, potential instability is higher in areas of lower Q and is most intense in the roof and floor areas of the drifts. Site-specific data defining the relationships between rock-mass quality and mechanical properties are required to reduce the uncertainties associated with such calculated results. JF - Proceedings - Symposium on Rock Mechanics AU - Ofoegbu, G I A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 767 EP - 773 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - rock masses KW - underground storage KW - site exploration KW - stability KW - mechanical properties KW - Nye County Nevada KW - rock mechanics KW - Q KW - seismicity KW - underground installations KW - waste disposal KW - Yucca Mountain KW - Nevada KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125387?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Variations+of+drift+stability+at+the+proposed+Yucca+Mountain+repository&rft.au=Ofoegbu%2C+G+I&rft.aulast=Ofoegbu&rft.aufirst=G&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=767&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 15 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - mechanical properties; Nevada; Nye County Nevada; Q; rock masses; rock mechanics; seismicity; site exploration; stability; underground installations; underground storage; United States; waste disposal; Yucca Mountain ER - TY - JOUR T1 - Size effect of the mode II fracture toughness of rock AN - 52125376; 2002-026785 AB - A new method, compression-shear test, has been developed for determining the mode II fracture toughness K (sub IIC) of rock. The effect of the specimen thickness B, the dimensionless notch length a/W as well as the notch inclination angle alpha on the determination of K (sub IIC) has been experimentally studied. The results show that the apparent mode II fracture toughness K (sub c) decreases as B and a/W increase and becomes constant when B> or =70 mm (i.e. cubic specimen) and a/W>0.5. The K (sub c) is almost independent of alpha in the range of 65 degrees -75 degrees . The constant K (sub c) is about 2-3 times that of mode I fracture toughness K (sub IC) and can be considered as the true mode II fracture toughness K (sub IIC) of rock. JF - Proceedings - Symposium on Rock Mechanics AU - Rao, Q H AU - Li, C AU - Stillborg, B AU - Sun, Z Q A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1117 EP - 1123 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - fractures KW - cracks KW - discontinuities KW - loading KW - shear tests KW - mathematical models KW - compressive strength KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125376?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Size+effect+of+the+mode+II+fracture+toughness+of+rock&rft.au=Rao%2C+Q+H%3BLi%2C+C%3BStillborg%2C+B%3BSun%2C+Z+Q&rft.aulast=Rao&rft.aufirst=Q&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1117&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 7 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - compressive strength; cracks; discontinuities; fractures; loading; mathematical models; rock mechanics; shear tests ER - TY - JOUR T1 - Static and dynamic moduli of weak sandstones AN - 52125339; 2002-026731 AB - The motivation for this study has been to establish a methodology for estimation of stiffness and strength of weak sandstones based on sonic measurements. A key element in this work has been to establish quantitative relations between static and dynamic moduli. The work was based on analyses of laboratory tests where both static moduli and sound velocities were measured simultaneously. The results of these analyses showed significant differences between the static and dynamic moduli even for dry rocks, under both hydrostatic and uniaxial loading. The differences were found to be strongly dependent on stress and strain. The relations between the static and dynamic moduli have been described by a set of mathematical formulas. These formulas allow for quantitative descriptions of the relations between static and dynamic moduli in weak sandstones, and give a foundation for predictions of how such materials will respond to changes in stress and strain. JF - Proceedings - Symposium on Rock Mechanics AU - Fjaer, E A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 675 EP - 681 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - strain KW - strength KW - stiffness KW - weak rocks KW - sandstone KW - mathematical models KW - elastic constants KW - triaxial tests KW - rock mechanics KW - sedimentary rocks KW - compressive strength KW - clastic rocks KW - hydrostatic pressure KW - Young's modulus KW - dynamic properties KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125339?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Static+and+dynamic+moduli+of+weak+sandstones&rft.au=Fjaer%2C+E&rft.aulast=Fjaer&rft.aufirst=E&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=675&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 15 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - clastic rocks; compressive strength; dynamic properties; elastic constants; hydrostatic pressure; mathematical models; rock mechanics; sandstone; sedimentary rocks; stiffness; strain; strength; triaxial tests; weak rocks; Young's modulus ER - TY - JOUR T1 - Analysis of stress relaxation behavior of salt rock AN - 52125331; 2002-026763 AB - The rheological behavior of salt rock is studied by both uniaxial and triaxial relaxation tests. In order to investigate the relaxation behavior of salt rock, stepwise relaxation tests were performed after the sample had been subjected to different pre-relaxation creep strains and confining pressures. Results show that the lateral strain was almost constant during relaxation. Stress relaxation decreases with increasing confining pressure. The pre-relaxation creep strain very greatly affects the relaxation behavior of salt rock. JF - Proceedings - Symposium on Rock Mechanics AU - Yang, C AU - Bei, S AU - Daemen, J J K AU - Yin, J A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 935 EP - 938 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - halides KW - strain KW - stress KW - relaxation KW - triaxial tests KW - halite KW - uniaxial tests KW - rock mechanics KW - rheology KW - creep KW - chlorides KW - permeability KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125331?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Analysis+of+stress+relaxation+behavior+of+salt+rock&rft.au=Yang%2C+C%3BBei%2C+S%3BDaemen%2C+J+J+K%3BYin%2C+J&rft.aulast=Yang&rft.aufirst=C&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=935&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 5 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - chlorides; creep; halides; halite; permeability; relaxation; rheology; rock mechanics; strain; stress; triaxial tests; uniaxial tests ER - TY - JOUR T1 - Study of dual-porosity poroelasticity in twophase fluid flow AN - 52125299; 2002-026729 AB - This paper presents the mathematical formulation and numerical results of two-phase fluid flow and rock deformations in fractured hydrocarbon reservoirs using the dual-porosity poroelastic approach. Deviating from traditional single-phase models, the wetting and nonwetting fluids, typically water and oil, are considered as immiscible liquids resident in the interacting fractures and matrix blocks of deformable formations. In addition, the developed governing equations follow rigorous volume fraction basis, instead of being proposed via phenomenological intuitions adopted in many existing dual-porosity models. The significance of this approach rests on its ability to include additional components of fluids as well as solids, as they may be needed in the actual reservoir simulation. JF - Proceedings - Symposium on Rock Mechanics AU - Bai, M AU - Meng, F AU - Roegiers, J C AU - Abousleiman, Y A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 661 EP - 668 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - two-phase models KW - elasticity KW - loading KW - statistical analysis KW - mathematical models KW - fluid dynamics KW - deformation KW - porosity KW - rock mechanics KW - reservoir rocks KW - flows KW - fractures KW - finite element analysis KW - pore pressure KW - pore water KW - permeability KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125299?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Study+of+dual-porosity+poroelasticity+in+twophase+fluid+flow&rft.au=Bai%2C+M%3BMeng%2C+F%3BRoegiers%2C+J+C%3BAbousleiman%2C+Y&rft.aulast=Bai&rft.aufirst=M&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=661&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 23 N1 - Document feature - illus. incl. 1 table N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - deformation; elasticity; finite element analysis; flows; fluid dynamics; fractures; loading; mathematical models; permeability; pore pressure; pore water; porosity; reservoir rocks; rock mechanics; statistical analysis; two-phase models ER - TY - JOUR T1 - An in-situ thermo-hydraulic experiment at the URL AN - 52125295; 2002-026756 AB - This paper is concerned with an in situ thermo-hydraulic experiment carried out at the Underground Research Laboratory of Atomic Energy of Canada Limited. The thermo-hydraulic experiment was designed to determine a hydro-thermal coupling parameter as well as the permeability and the thermal and hydraulic diffusivities of the Lac du Bonnet granite. Several water injection and heater tests were conducted during this experiment. In an injection test, a given volume of water is pumped quasi instantaneously in a sealed-off interval of the borehole, while in a heater test, heat is produced at a constant rate over a certain period (ranging from about one day to several weeks). The experimental set-up involves a heater installed in a sub-horizontal borehole drilled from an underground gallery, and piezometers and thermistors located at different distances from the heater, in auxiliary boreholes drilled from an adjacent gallery. Determination of the material parameters relies on matching the measured pore pressure and temperature responses with the theoretical predictions based on singular solutions of thermoporoelasticity. JF - Proceedings - Symposium on Rock Mechanics AU - Senjuntichai, Teerapong AU - Detournay, Emmanuel AU - Berchenko, Ilya AU - Chandler, Neil AU - Martino, Jason AU - Kozak, Ed A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 877 EP - 884 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - hydraulics KW - elasticity KW - in situ KW - salt domes KW - Pinawa Manitoba KW - mathematical models KW - Manitoba KW - porosity KW - Underground Research Laboratory KW - thermal diffusivity KW - Canada KW - Western Canada KW - Lac du Bonnet Batholith KW - underground disposal KW - permeability KW - diffusivity KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125295?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=An+in-situ+thermo-hydraulic+experiment+at+the+URL&rft.au=Senjuntichai%2C+Teerapong%3BDetournay%2C+Emmanuel%3BBerchenko%2C+Ilya%3BChandler%2C+Neil%3BMartino%2C+Jason%3BKozak%2C+Ed&rft.aulast=Senjuntichai&rft.aufirst=Teerapong&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=877&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 7 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Canada; diffusivity; elasticity; hydraulics; in situ; Lac du Bonnet Batholith; Manitoba; mathematical models; permeability; Pinawa Manitoba; porosity; salt domes; thermal diffusivity; underground disposal; Underground Research Laboratory; Western Canada ER - TY - JOUR T1 - Thermal-mechanical measurements in the Drift Scale Test, Yucca Mountain, Nevada AN - 52125274; 2002-026739 AB - Measurements of temperature, rock displacement, and strain induced by heat, representing a potential high level nuclear waste repository, are being collected and analyzed by Sandia National Laboratories at the Exploratory Studies Facility at Yucca Mountain, Nevada. The data indicate nearly elastic response of the host rock to the thermal input. The concrete liner in the Heated Drift exhibits a far more complex combination of thermal expansion, mechanical stress from the surrounding rock, and shrinkage and dehydration phenomena. JF - Proceedings - Symposium on Rock Mechanics AU - Sobolik, S R AU - Finley, R E AU - Ballard, S A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 735 EP - 742 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - high-level waste KW - strain KW - displacements KW - Nye County Nevada KW - thermal expansion KW - rock mechanics KW - thermomechanical properties KW - waste disposal KW - Yucca Mountain KW - Nevada KW - faults KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125274?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Thermal-mechanical+measurements+in+the+Drift+Scale+Test%2C+Yucca+Mountain%2C+Nevada&rft.au=Sobolik%2C+S+R%3BFinley%2C+R+E%3BBallard%2C+S&rft.aulast=Sobolik&rft.aufirst=S&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=735&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 5 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - displacements; faults; high-level waste; Nevada; Nye County Nevada; rock mechanics; strain; thermal expansion; thermomechanical properties; United States; waste disposal; Yucca Mountain ER - TY - JOUR T1 - Thermomechanical effects on permeability for a 3-D model of YM rock AN - 52125239; 2002-026738 AB - We estimate how thermomechanical processes affect the spatial variability of fracture permeability for a 3-D model representing Topopah Spring tuff at the nuclear-waste repository horizon in Yucca Mountain, Nevada. Using a finite-difference code, we compute thermal stress changes. We evaluate possible permeability enhancement resulting from shear slip along various mapped fracture sets after 50 years of heating, for rock in the near-field environment of the proposed repository. Our results indicate permeability enhancement of a factor of 2 for regions about 10 to 30 m above drifts, for north-south striking vertical fractures. Shear slip and permeability increases of a factor of 4 can occur in regions just above drifts, for east-west striking vertical fractures. Information on how permeability may change over the lifetime of a geologic repository is important to the prediction and evaluation of repository performance. JF - Proceedings - Symposium on Rock Mechanics AU - Berge, P A AU - Blair, S C AU - Wang, H F A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 729 EP - 734 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - volcanic rocks KW - welded tuff KW - igneous rocks KW - elastic constants KW - Nye County Nevada KW - Miocene KW - rock mechanics KW - Cenozoic KW - Topopah Spring Member KW - pyroclastics KW - fractures KW - Tertiary KW - Neogene KW - near-field KW - thermomechanical properties KW - waste disposal KW - Yucca Mountain KW - thermal effects KW - permeability KW - Nevada KW - Young's modulus KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125239?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Thermomechanical+effects+on+permeability+for+a+3-D+model+of+YM+rock&rft.au=Berge%2C+P+A%3BBlair%2C+S+C%3BWang%2C+H+F&rft.aulast=Berge&rft.aufirst=P&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=729&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 24 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Cenozoic; elastic constants; fractures; igneous rocks; Miocene; near-field; Neogene; Nevada; Nye County Nevada; permeability; pyroclastics; rock mechanics; Tertiary; thermal effects; thermomechanical properties; Topopah Spring Member; United States; volcanic rocks; waste disposal; welded tuff; Young's modulus; Yucca Mountain ER - TY - JOUR T1 - The evolution of rock reinforcement design AN - 52125189; 2002-026727 AB - This paper traces the evolution of rock reinforcement design in mining and tunneling. In the late 1940's and early 1950's, the first true design methods--as opposed to simple pinning of loose materials--used suspension load carrying concepts. Next, the beam and friction approach to optimize fiber stresses in roof beams was developed. Later methods, in the middle to late 1950's and 1960's, relied upon rock arch development, confining stress maintenance and shear reinforcement, and rock arch thrust capacity. Theoretical approaches were developed, beginning in the 1930's but peaking in the 1960's and 1970's, such as the "ground reaction curve", using the changing stiffness with time of the deforming rock mass and the supplied reinforcement or support to optimize the reinforcement effort. Empirical methods arose as more experience was gained and the subsequent methods used ratios of span to bolt length, ratios of mined height to bolt length, calculation of the equivalent support pressure, and rock mass ratings with stand-up time and bolting needs estimation from pure empirical findings or through roof loosening estimates. Physical models were also used. Numerical modeling was developed in the late 1960's which allowed incorporation of rock reinforcement elements in two- and three-dimensional models of excavations. In the early 1980's, the keyblock concept evolved for identifying and reinforcing the "keystone" block in an arch or wall of fractured rock, minimizing reinforcing requirements. The evolution of rock reinforcement design from early suspension and beam and friction concepts, to rock arch maintenance and modeling all have the common thread of helping the rock mass to help itself as a support. Future challenges lie in characterizing the rock mass appropriately and realistically. JF - Proceedings - Symposium on Rock Mechanics AU - Kendorski, Francis S A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 643 EP - 649 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - history KW - numerical models KW - mining geology KW - loading KW - tunnels KW - reinforced materials KW - tensile strength KW - design KW - rock mechanics KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125189?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=The+evolution+of+rock+reinforcement+design&rft.au=Kendorski%2C+Francis+S&rft.aulast=Kendorski&rft.aufirst=Francis&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=643&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 36 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - design; history; loading; mining geology; numerical models; reinforced materials; rock mechanics; tensile strength; tunnels ER - TY - JOUR T1 - Core disking in Westerly Granite and its potential use for in situ stress estimation AN - 52125085; 2002-026792 AB - Core disking mechanism and relationship to in situ stress conditions in Westerly granite were investigated through experiments simulating deep core-drilling under true triaxial stress. Core disks were characterized by nearly uniform thickness for a given stress condition and by a "trough" shape with the trough axis oriented in the direction of the far-field maximum horizontal principal stress. A thin section study revealed that the core profile shape is the result of subhorizontal extensile cracks developed at the root of the core stub. Measuring the average disk thickness for each pre-determined true-triaxial stress condition, and using a nonlinear regression analysis, enabled the establishment of a quantitative relationship between disk thickness and the three principal stress components. The relationship enables the estimation of the magnitude of the maximum horizontal principal stress from knowledge of disk thickness if the magnitudes of the other two principal stresses are independently known. JF - Proceedings - Symposium on Rock Mechanics AU - Song, I AU - Haimson, B C A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1173 EP - 1180 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - in situ KW - Westerly Granite KW - Pennsylvanian KW - Paleozoic KW - igneous rocks KW - granites KW - stress KW - Carboniferous KW - triaxial tests KW - cores KW - rock mechanics KW - plutonic rocks KW - drilling KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125085?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Core+disking+in+Westerly+Granite+and+its+potential+use+for+in+situ+stress+estimation&rft.au=Song%2C+I%3BHaimson%2C+B+C&rft.aulast=Song&rft.aufirst=I&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1173&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 17 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Carboniferous; cores; drilling; granites; igneous rocks; in situ; Paleozoic; Pennsylvanian; plutonic rocks; rock mechanics; stress; triaxial tests; United States; Westerly Granite ER - TY - JOUR T1 - Laboratory investigation of two-phase flow in jointed rock media AN - 52125045; 2002-026750 AB - It is an established fact that rock joints are usually unsaturated, and they conduct both gas (CO (sub 2) , CH (sub 4) , and air) and water together. Predicting water-gas flows occurring within a network of rock joints under mining conditions is a very difficult task, due to the wide array of hydro-geological variables involved. This paper describes the laboratory investigation of two-phase flow (water and air) through jointed rock specimens for different stress conditions. Findings of this study show that unsaturated flow through rock specimens can be described using the modified Darcy's law. At a given confining pressure and permeating inlet pore pressures, two-phase permeability is decreased significantly compared to single-phase permeability. As in single-phase flow, two-phase flow volumes decrease significantly with increase in confining stress until discontinuities and pores attain to their minimum values. JF - Proceedings - Symposium on Rock Mechanics AU - Indraratna, B AU - Ranjith, P G AU - Singh, R N A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 827 EP - 833 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - mines KW - two-phase models KW - hydraulics KW - gas-water interface KW - Darcy's law KW - stress KW - joints KW - flows KW - fractures KW - style KW - discontinuities KW - confining pressure KW - permeability KW - 30:Engineering geology KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125045?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Laboratory+investigation+of+two-phase+flow+in+jointed+rock+media&rft.au=Indraratna%2C+B%3BRanjith%2C+P+G%3BSingh%2C+R+N&rft.aulast=Indraratna&rft.aufirst=B&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=827&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 12 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - confining pressure; Darcy's law; discontinuities; flows; fractures; gas-water interface; hydraulics; joints; mines; permeability; stress; style; two-phase models ER - TY - JOUR T1 - Coupled THM analysis of the single heater test at Yucca Mountain AN - 52125015; 2002-026736 AB - This paper presents a summary of results from the Single-Heater Test (SHT) at Yucca Mountain, Nevada. In the SHT, a horizontal, 5-m-long, line-heat source was used to heat a rock pillar for nine months. Moisture movement was monitored during and after heating using electrical-resistance tomography (ERT) and neutron-logging techniques. Results indicate drying in regions of the rock where temperature reached 60 degrees C and above. The drying zone is asymmetric and is not centered on the heater, but has lobes extending above and to the sides of the heater. Predicted temperatures agreed well with observations. A coldtrap effect was predicted, in the heater borehole, that efficiently transfers heat along the heater borehole to the excavation wall. A simple thermomechanical analysis of the SHT shows that shear zones predicted for vertical fractures coincide with regions of increased moisture content derived from ERT measurements. JF - Proceedings - Symposium on Rock Mechanics AU - Blair, S C AU - Lin, W AU - Ramirez, Abelardo L AU - Daily, William D AU - Buscheck, T A A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 715 EP - 719 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - United States KW - tomography KW - volcanic rocks KW - site exploration KW - igneous rocks KW - thermal properties KW - Nye County Nevada KW - Miocene KW - rock mechanics KW - Cenozoic KW - Topopah Spring Member KW - pyroclastics KW - Tertiary KW - Neogene KW - thermomechanical properties KW - tuff KW - hydraulic conductivity KW - Yucca Mountain KW - permeability KW - Nevada KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52125015?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Coupled+THM+analysis+of+the+single+heater+test+at+Yucca+Mountain&rft.au=Blair%2C+S+C%3BLin%2C+W%3BRamirez%2C+Abelardo+L%3BDaily%2C+William+D%3BBuscheck%2C+T+A&rft.aulast=Blair&rft.aufirst=S&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=715&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 8 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Cenozoic; hydraulic conductivity; igneous rocks; Miocene; Neogene; Nevada; Nye County Nevada; permeability; pyroclastics; rock mechanics; site exploration; Tertiary; thermal properties; thermomechanical properties; tomography; Topopah Spring Member; tuff; United States; volcanic rocks; Yucca Mountain ER - TY - JOUR T1 - Rock mass modeling in tunneling versus rock mass classification using rating methods AN - 52124971; 2002-026721 AB - The paper discusses the problem of quantitative rock mass classification used for design and construction of tunnels. It is the authors conviction that quantitative classification systems should not be used to determine supports during planning and construction of a tunnel. Instead of rock mass classification we recommend to select design parameters, tunnel support, type of excavation, working sequence, etc., and to estimate construction time and costs on the basis of rock mass models which are achieved by adequate rock mass characterization, assessment of initial stress and analyses of stress redistribution, deformation behavior and potential failure models. Practical application and benefits of rock mass modeling for the design of tunnels is demonstrated by case studies from the Austrian Alps and Greece. JF - Proceedings - Symposium on Rock Mechanics AU - Riedmueller, G AU - Schubert, W A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 601 EP - 605 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - rock masses KW - Greece KW - site exploration KW - Alps KW - Europe KW - Austria KW - deformation KW - excavations KW - Southern Europe KW - case studies KW - Anilio Tunnel KW - Central Europe KW - tunnels KW - classification KW - construction KW - design KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/52124971?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Rock+mass+modeling+in+tunneling+versus+rock+mass+classification+using+rating+methods&rft.au=Riedmueller%2C+G%3BSchubert%2C+W&rft.aulast=Riedmueller&rft.aufirst=G&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=601&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 30 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Alps; Anilio Tunnel; Austria; case studies; Central Europe; classification; construction; deformation; design; Europe; excavations; Greece; rock masses; site exploration; Southern Europe; tunnels ER - TY - JOUR T1 - U. S. Bureau of Reclamation seismotectonic studies in the greater Basin and Range; a changing focus AN - 51642154; 2006-009872 JF - Annual Meeting - Association of Engineering Geologists AU - Anderson, Larry W AU - Ake, John AU - LaForge, R AU - Simon, David S AU - Keaton, Jeffrey R Y1 - 1999 PY - 1999 DA - 1999 SP - 56 PB - Association of Engineering Geologists, [location varies] VL - 42 SN - 0375-572X, 0375-572X KW - North America KW - embankments KW - Como Dam KW - Basin and Range Province KW - western Montana KW - U. S. Bureau of Reclamation KW - dams KW - government agencies KW - tectonics KW - seismotectonics KW - faults KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51642154?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+-+Association+of+Engineering+Geologists&rft.atitle=U.+S.+Bureau+of+Reclamation+seismotectonic+studies+in+the+greater+Basin+and+Range%3B+a+changing+focus&rft.au=Anderson%2C+Larry+W%3BAke%2C+John%3BLaForge%2C+R%3BSimon%2C+David+S%3BKeaton%2C+Jeffrey+R&rft.aulast=Anderson&rft.aufirst=Larry&rft.date=1999-01-01&rft.volume=42&rft.issue=&rft.spage=56&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+-+Association+of+Engineering+Geologists&rft.issn=0375572X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Association of Engineering Geologists, 42nd annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - CAGPAV N1 - SubjectsTermNotLitGenreText - Basin and Range Province; Como Dam; dams; embankments; faults; government agencies; North America; seismotectonics; tectonics; U. S. Bureau of Reclamation; western Montana ER - TY - JOUR T1 - The forensic geotechnical toolbox AN - 51641586; 2006-009879 JF - Annual Meeting - Association of Engineering Geologists AU - Bartlett, Sam AU - Kunzer, Sandy AU - Simon, David S AU - Keaton, Jeffrey R Y1 - 1999 PY - 1999 DA - 1999 SP - 58 PB - Association of Engineering Geologists, [location varies] VL - 42 SN - 0375-572X, 0375-572X KW - forensic geology KW - safety KW - dams KW - instruments KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51641586?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+-+Association+of+Engineering+Geologists&rft.atitle=The+forensic+geotechnical+toolbox&rft.au=Bartlett%2C+Sam%3BKunzer%2C+Sandy%3BSimon%2C+David+S%3BKeaton%2C+Jeffrey+R&rft.aulast=Bartlett&rft.aufirst=Sam&rft.date=1999-01-01&rft.volume=42&rft.issue=&rft.spage=58&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+-+Association+of+Engineering+Geologists&rft.issn=0375572X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Association of Engineering Geologists, 42nd annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - CAGPAV N1 - SubjectsTermNotLitGenreText - dams; forensic geology; instruments; safety ER - TY - JOUR T1 - Dams with active landslides in their foundations AN - 51640502; 2006-009961 JF - Annual Meeting - Association of Engineering Geologists AU - MacDonald, Robert B AU - Lowther, D Lynne AU - Weston, Ken AU - Dow, Kent AU - Simon, David S AU - Keaton, Jeffrey R Y1 - 1999 PY - 1999 DA - 1999 SP - 76 PB - Association of Engineering Geologists, [location varies] VL - 42 SN - 0375-572X, 0375-572X KW - United States KW - western Colorado KW - spillways KW - northern Montana KW - Montana KW - landslides KW - foundations KW - mass movements KW - dams KW - Lake Sherburne Dam KW - Fruitgrowers Dam KW - Colorado KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51640502?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+-+Association+of+Engineering+Geologists&rft.atitle=Dams+with+active+landslides+in+their+foundations&rft.au=MacDonald%2C+Robert+B%3BLowther%2C+D+Lynne%3BWeston%2C+Ken%3BDow%2C+Kent%3BSimon%2C+David+S%3BKeaton%2C+Jeffrey+R&rft.aulast=MacDonald&rft.aufirst=Robert&rft.date=1999-01-01&rft.volume=42&rft.issue=&rft.spage=76&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+-+Association+of+Engineering+Geologists&rft.issn=0375572X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Association of Engineering Geologists, 42nd annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - CAGPAV N1 - SubjectsTermNotLitGenreText - Colorado; dams; foundations; Fruitgrowers Dam; Lake Sherburne Dam; landslides; mass movements; Montana; northern Montana; spillways; United States; western Colorado ER - TY - JOUR T1 - Locke Island landslide AN - 51640423; 2006-009883 JF - Annual Meeting - Association of Engineering Geologists AU - Bennett, Douglas J AU - Simon, David S AU - Keaton, Jeffrey R Y1 - 1999 PY - 1999 DA - 1999 SP - 59 PB - Association of Engineering Geologists, [location varies] VL - 42 SN - 0375-572X, 0375-572X KW - United States KW - landslides KW - bluffs KW - Washington KW - geologic hazards KW - mass movements KW - White Bluffs KW - Hanford Site KW - south-central Washington KW - Locke Island landslide KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51640423?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Annual+Meeting+-+Association+of+Engineering+Geologists&rft.atitle=Locke+Island+landslide&rft.au=Bennett%2C+Douglas+J%3BSimon%2C+David+S%3BKeaton%2C+Jeffrey+R&rft.aulast=Bennett&rft.aufirst=Douglas&rft.date=1999-01-01&rft.volume=42&rft.issue=&rft.spage=59&rft.isbn=&rft.btitle=&rft.title=Annual+Meeting+-+Association+of+Engineering+Geologists&rft.issn=0375572X&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Association of Engineering Geologists, 42nd annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2006-01-01 N1 - Last updated - 2012-06-07 N1 - CODEN - CAGPAV N1 - SubjectsTermNotLitGenreText - bluffs; geologic hazards; Hanford Site; landslides; Locke Island landslide; mass movements; south-central Washington; United States; Washington; White Bluffs ER - TY - JOUR T1 - Key factors determining stability and water leakage of hard rock subsea tunnels AN - 51366095; 2002-026720 AB - The many hard rock subsea tunnels having been completed along the coast of Norway the last 20 years offer excellent opportunities to study the key factors determining stability and water leakage of such projects. This paper is discussing the issue based on research having been performed at the Norwegian University of Science and Technology (NTNU) on the rock engineering aspects of the Norwegian subsea tunnels. Particular emphasis is put on results of a recent study of the Froya subsea tunnel, which is currently under construction, and where very difficult rock conditions are expected. It is concluded that distinct faults or weakness zones generally represent the most difficult rock conditions. Major water inflows seldom are directly connected to the major zones, and are difficult to prognosticate. JF - Proceedings - Symposium on Rock Mechanics AU - Nilsen, B A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 593 EP - 599 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - Western Europe KW - Kvalsund Tunnel KW - submarine installations KW - stress KW - stability KW - Hitra Tunnel KW - Europe KW - Norwegian Sea KW - seepage KW - rock mechanics KW - Freifjord Tunnel KW - Scandinavia KW - marine installations KW - Ellingsoy Tunnel KW - Vardo Tunnel KW - tunnels KW - Karmsund Tunnel KW - Arctic Ocean KW - Norway KW - Godoy Tunnel KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51366095?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Key+factors+determining+stability+and+water+leakage+of+hard+rock+subsea+tunnels&rft.au=Nilsen%2C+B&rft.aulast=Nilsen&rft.aufirst=B&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=593&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 8 N1 - Document feature - illus. incl. 2 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Arctic Ocean; Ellingsoy Tunnel; Europe; Freifjord Tunnel; Godoy Tunnel; Hitra Tunnel; Karmsund Tunnel; Kvalsund Tunnel; marine installations; Norway; Norwegian Sea; rock mechanics; Scandinavia; seepage; stability; stress; submarine installations; tunnels; Vardo Tunnel; Western Europe ER - TY - JOUR T1 - Investigation of important parameters for unreinforced shotcrete as rock support in the Kiirunavaara Mine, Sweden AN - 51364433; 2002-026725 AB - The results from an extensive shotcrete failure mapping together with initial adhesion strength tests showed that there were a number of parameters for unreinforced shotcrete as rock support that needed to be further investigated. A more extensive adhesion strength test program was carried out which included studying the effects of accelerator concentration, time and the surface treatment method. The results from these investigations are presented in this paper. It is shown that water-jet scaling and sufficient thickness of the shotcrete give favourable conditions for the use of unreinforced shotcrete as rock support. The result of the tests carried out in Kiirunavaara shows that the adhesion strength has a wide range of variation. JF - Proceedings - Symposium on Rock Mechanics AU - Malmgren, L AU - Svensson, T A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 629 EP - 635 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - mining KW - mines KW - failures KW - Western Europe KW - geologic hazards KW - underground mining KW - roof control KW - reinforced materials KW - Europe KW - land subsidence KW - rock mechanics KW - Kiirunavaara Mine KW - Scandinavia KW - shotcrete KW - mining geology KW - compressive strength KW - Sweden KW - northern Sweden KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51364433?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Investigation+of+important+parameters+for+unreinforced+shotcrete+as+rock+support+in+the+Kiirunavaara+Mine%2C+Sweden&rft.au=Malmgren%2C+L%3BSvensson%2C+T&rft.aulast=Malmgren&rft.aufirst=L&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=629&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 5 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - compressive strength; Europe; failures; geologic hazards; Kiirunavaara Mine; land subsidence; mines; mining; mining geology; northern Sweden; reinforced materials; rock mechanics; roof control; Scandinavia; shotcrete; Sweden; underground mining; Western Europe ER - TY - JOUR T1 - The initiation of drilling-induced tensile fractures and their use for the estimation of stress magnitude AN - 51364210; 2002-026794 AB - A three-dimensional finite element model is used to determine the state of stress around a wellbore as a function of time. The thermo-poroelastic model includes heat conduction caused by temperature differences between the formation and the drilling mud, and pore pressure diffusion due to differences between the formation pore pressure and the pressure in the wellbore. As it only handles conductive heat transport, the model is limited to formations with very low permeability where the heat transport associated with pore fluid diffusion can be neglected. Observation of drilling-induced fractures means that at some time between drilling and logging the tangential stress at the borehole wall was tensile. The model calculations are used to determine a range of magnitudes of the greatest horizontal principal stress which cause tensile stresses at the borehole wall. The results indicate a strike-slip stress regime for the northern North Sea. However, non-linear material behavior and chemical influences of the drilling mud on the shale are not considered in the model and may change the conclusions of this work with respect to the stress magnitude. JF - Proceedings - Symposium on Rock Mechanics AU - Brudy, M AU - Kjorholt, H A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1189 EP - 1194 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - elasticity KW - three-dimensional models KW - stress KW - mechanical properties KW - tensile strength KW - elastic constants KW - strike-slip faults KW - porosity KW - case studies KW - fractures KW - boreholes KW - drilling KW - North Sea KW - North Atlantic KW - permeability KW - faults KW - Atlantic Ocean KW - Young's modulus KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51364210?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=The+initiation+of+drilling-induced+tensile+fractures+and+their+use+for+the+estimation+of+stress+magnitude&rft.au=Brudy%2C+M%3BKjorholt%2C+H&rft.aulast=Brudy&rft.aufirst=M&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1189&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 9 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Atlantic Ocean; boreholes; case studies; drilling; elastic constants; elasticity; faults; fractures; mechanical properties; North Atlantic; North Sea; permeability; porosity; stress; strike-slip faults; tensile strength; three-dimensional models; Young's modulus ER - TY - JOUR T1 - Analysis of rock culverts under railroads AN - 51363986; 2002-026718 AB - The behavior of rock culverts under railroads has been studied using numerical and analytical modeling, complemented by laboratory testing and field measurements. Modeling results suggested a plausible explanation for the separation of rock blocks, and the deteriorated function of the culverts. Agreement between calculated and measured displacements was fairly good. Numerical modeling showed that block separation could be prevented by installing pre-tensioned tendons in the culvert. However, the deformations caused by passing trains only account for part of the total deformation. Other factors, such as frost action, significantly affect the separation magnitude, and need to be studied further. These results have direct application to the currently ongoing upgrade of the railway system in Sweden, to allow larger train loads. JF - Proceedings - Symposium on Rock Mechanics AU - Sjoberg, J AU - Nordlund, E AU - Olofsson, E A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 577 EP - 584 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - rock masses KW - embankments KW - Western Europe KW - numerical models KW - engineering properties KW - Europe KW - tensile strength KW - rock mechanics KW - Scandinavia KW - railroads KW - construction KW - Sweden KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51363986?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Analysis+of+rock+culverts+under+railroads&rft.au=Sjoberg%2C+J%3BNordlund%2C+E%3BOlofsson%2C+E&rft.aulast=Sjoberg&rft.aufirst=J&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=577&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 5 N1 - Document feature - illus. incl. 5 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - construction; embankments; engineering properties; Europe; numerical models; railroads; rock masses; rock mechanics; Scandinavia; Sweden; tensile strength; Western Europe ER - TY - JOUR T1 - Reservoir stress path; evaluation of core and field data AN - 51363562; 2002-026795 AB - Reservoir stress paths estimated from in situ measurements and on the basis of core data are often in apparent disagreement. Using synthetic rocks formed under stress, we show how stress dependent/plastic deformation and core damage may affect the predicted stress paths. Further, consequences of scale effects in fractured reservoirs, and of Biot's alpha being different from unity, are demonstrated. In order to gain more insight into the response of reservoirs during depletion, the quantity and quality of in situ compaction and stress monitoring data need to be improved. JF - Proceedings - Symposium on Rock Mechanics AU - Holt, R M A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 1195 EP - 1202 PB - A.A. Balkema, [location varies] VL - 37, Vol. 2 SN - 0586-3031, 0586-3031 KW - Groningen Netherlands KW - petroleum engineering KW - Vicksburg Group KW - sandstone KW - plastic deformation KW - Europe KW - Slochteren Sandstone KW - triaxial tests KW - oil and gas fields KW - cores KW - rock mechanics KW - reservoir rocks KW - Cenozoic KW - sedimentary rocks KW - pore pressure KW - Netherlands KW - monitoring KW - Western Europe KW - in situ KW - stress KW - Ekofisk Field KW - mathematical models KW - Paleogene KW - deformation KW - middle Oligocene KW - Tertiary KW - naturally fractured reservoirs KW - reservoir properties KW - North Sea KW - North Atlantic KW - clastic rocks KW - Atlantic Ocean KW - Oligocene KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51363562?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Reservoir+stress+path%3B+evaluation+of+core+and+field+data&rft.au=Holt%2C+R+M&rft.aulast=Holt&rft.aufirst=R&rft.date=1999-01-01&rft.volume=37%2C+Vol.+2&rft.issue=&rft.spage=1195&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U.S. rock mechanics symposium on Rock mechanics for industry N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2002-01-01 N1 - Number of references - 19 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Atlantic Ocean; Cenozoic; clastic rocks; cores; deformation; Ekofisk Field; Europe; Groningen Netherlands; in situ; mathematical models; middle Oligocene; monitoring; naturally fractured reservoirs; Netherlands; North Atlantic; North Sea; oil and gas fields; Oligocene; Paleogene; petroleum engineering; plastic deformation; pore pressure; reservoir properties; reservoir rocks; rock mechanics; sandstone; sedimentary rocks; Slochteren Sandstone; stress; Tertiary; triaxial tests; Vicksburg Group; Western Europe ER - TY - JOUR T1 - The life and times of paleoindians in Arctic Alaska AN - 51196453; 2001-003914 JF - Arctic Research of the United States AU - Kunz, Michael L AU - Mann, Daniel H AU - Matheus, Paul E AU - Groves, Pamela Y1 - 1999 PY - 1999 DA - 1999 SP - 33 EP - 39 PB - National Science Foundation, Arlington, VA VL - 13, Summer SN - 1045-4764, 1045-4764 KW - United States KW - vegetation KW - paleoclimatology KW - climate change KW - artifacts KW - paleoecology KW - Cenozoic KW - bones KW - arctic environment KW - ecology KW - climate KW - paleoindian KW - Chordata KW - biodiversity KW - archaeology KW - Quaternary KW - Mammalia KW - Mesa Alaska KW - National Petroleum Reserve Alaska KW - archaeological sites KW - Northern Alaska KW - DNA KW - Pleistocene KW - Alaska KW - fossils KW - Brooks Range KW - Vertebrata KW - Tetrapoda KW - 24:Quaternary geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/51196453?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Arctic+Research+of+the+United+States&rft.atitle=The+life+and+times+of+paleoindians+in+Arctic+Alaska&rft.au=Kunz%2C+Michael+L%3BMann%2C+Daniel+H%3BMatheus%2C+Paul+E%3BGroves%2C+Pamela&rft.aulast=Kunz&rft.aufirst=Michael&rft.date=1999-01-01&rft.volume=13%2C+Summer&rft.issue=&rft.spage=33&rft.isbn=&rft.btitle=&rft.title=Arctic+Research+of+the+United+States&rft.issn=10454764&rft_id=info:doi/ LA - English DB - GeoRef N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Number of references - 7 N1 - PubXState - VA N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Alaska; archaeological sites; archaeology; arctic environment; artifacts; biodiversity; bones; Brooks Range; Cenozoic; Chordata; climate; climate change; DNA; ecology; fossils; Mammalia; Mesa Alaska; National Petroleum Reserve Alaska; Northern Alaska; paleoclimatology; paleoecology; paleoindian; Pleistocene; Quaternary; Tetrapoda; United States; vegetation; Vertebrata ER - TY - JOUR T1 - Making science relevant to policy from the land managers' perspective AN - 50915067; 2000-059535 AB - The National Park Service has cooperated with various state and federal agencies, private contractors, and academia for many years to obtain water resources information needed by park managers. During the last five years, the National Park Service developed a partnership with the U.S. Geological Survey's National Water Quality Assessment Program. This national program was directed by Congress to assess the status and trends of our Nation's water resources, particularly in the area of water quality. Last year, the National Park Service expanded this partnership through the Clean Water Action Plan. The concept behind this partnership is to match the policy responsibilities and management information needs of the National Park Service with the scientific capabilities of the Survey, thereby supporting the principal missions of both agencies. In fiscal year 1999, 2.5 million dollars will fund 36 projects in 32 parks through this program. Projects were designed to address high priority park problems and were developed with close coordination between agency scientists and land managers. Project findings will be presented in professional reports and interpretative products to assist park managers make policy decisions and inform the public. In the future, cooperative projects may be implemented which integrate park needs with other agency/local needs, and national water quality programs. JF - Technical Publication Series - American Water Resources Association AU - Long, Barry A A2 - Kendy, Eloise Y1 - 1999 PY - 1999 DA - 1999 SP - 3 EP - 7 PB - AWRA - American Water Resources Association, Bethesda, MD VL - 99-2 SN - 0731-9789, 0731-9789 KW - water use KW - United States KW - hydrology KW - water quality KW - programs KW - monitoring KW - regulations KW - surface water KW - rivers and streams KW - government agencies KW - water management KW - pollution KW - national parks KW - decision-making KW - public lands KW - ground water KW - Clean Water Act KW - NAWQA KW - water resources KW - 21:Hydrogeology KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50915067?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Technical+Publication+Series+-+American+Water+Resources+Association&rft.atitle=Making+science+relevant+to+policy+from+the+land+managers%27+perspective&rft.au=Long%2C+Barry+A&rft.aulast=Long&rft.aufirst=Barry&rft.date=1999-01-01&rft.volume=99-2&rft.issue=&rft.spage=3&rft.isbn=1882132467&rft.btitle=&rft.title=Technical+Publication+Series+-+American+Water+Resources+Association&rft.issn=07319789&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Science into policy; water in the public realm N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Number of references - 4 N1 - PubXState - MD N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - Clean Water Act; decision-making; government agencies; ground water; hydrology; monitoring; national parks; NAWQA; pollution; programs; public lands; regulations; rivers and streams; surface water; United States; water management; water quality; water resources; water use ER - TY - JOUR T1 - Resource values, instream flows, and ground-water dependence of an oasis stream in the Mojave Desert AN - 50903789; 2001-024065 AB - An instream flow assessment of an oasis stream in the northeastern Mojave Desert was conducted using the U.S. Bureau of Land Management's value-based process (Jackson et al., 1989). Produced in support of a water right application, the study included an institutional analysis of water availability for the site, characterization of the hydrology of the aquifer-stream system, and description and quantification of flow-dependent resource values. Specific objectives for the assessment were to (1) determine the physical and legal availability of water for management purposes; (2) understand the hydrology of Beaver Dam Wash, particularly the interaction of surface- and ground-water systems; (3) develop relationships between streamflow and resource values and evaluate flow requirements to maintain resource values; and (4) identify and evaluate flow protection strategies and related flow issues for management. The institutional analysis addressed the need for protection from extensive ground-water withdrawals that threaten surface flows in the area. The hydrologic characterization described ground-water contributions to streamflow at the oasis and the influence of large floodflows on channel morphology and ecological sites. The resource assessment focused on critical habitat for several special-status fish species, aesthetics and wadeability for recreation users, and consumptive use and ecological needs for riparian habitat. JF - Technical Publication Series - American Water Resources Association AU - Fogg, James L AU - Muller, Daniel P AU - Olsen, Darren S AU - Potyondy, John P Y1 - 1999 PY - 1999 DA - 1999 SP - 267 EP - 273 PB - AWRA - American Water Resources Association, Bethesda, MD VL - 99-3 SN - 0731-9789, 0731-9789 KW - United States KW - hydrology KW - rivers and streams KW - channels KW - ground water KW - aquifers KW - Virgin River valley KW - Cenozoic KW - Tertiary KW - recharge KW - Muddy Creek Formation KW - Beaver Dam Wash KW - Mojave Desert KW - streams KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50903789?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Technical+Publication+Series+-+American+Water+Resources+Association&rft.atitle=Resource+values%2C+instream+flows%2C+and+ground-water+dependence+of+an+oasis+stream+in+the+Mojave+Desert&rft.au=Fogg%2C+James+L%3BMuller%2C+Daniel+P%3BOlsen%2C+Darren+S%3BPotyondy%2C+John+P&rft.aulast=Fogg&rft.aufirst=James&rft.date=1999-01-01&rft.volume=99-3&rft.issue=&rft.spage=267&rft.isbn=1882132475&rft.btitle=&rft.title=Technical+Publication+Series+-+American+Water+Resources+Association&rft.issn=07319789&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - American Water Resources Association summer specialty conference N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 2001-01-01 N1 - Number of references - 4 N1 - PubXState - MD N1 - Document feature - illus. incl. sketch map N1 - Last updated - 2012-06-07 N1 - SubjectsTermNotLitGenreText - aquifers; Beaver Dam Wash; Cenozoic; channels; ground water; hydrology; Mojave Desert; Muddy Creek Formation; recharge; rivers and streams; streams; Tertiary; United States; Virgin River valley ER - TY - JOUR T1 - Three dimensional non-linear modelling of the effects of high horizontal stress on underground excavation face-end stability AN - 50320715; 1999-068651 AB - Recent analysis of roadway deformation monitoring information from across the Selby coalfield has confirmed the detrimental effects of high horizontal stress direction on roadway stability for United Kingdom coal mine roadways. The results of a three dimensional non-linear stress analysis, using FLAC (super 3D) , demonstrate that three dimensional modelling can make a significant contribution to the improved understanding of underground roadway face-end instability and reinforcement requirements. Non-linear modelling clearly illustrates the asymmetric stress effects associated with adversely orientated stress fields relative to the excavation direction. The results of the investigation provide a more realistic evaluation than earlier three dimensional elastic analyses of the problem. JF - Proceedings - Symposium on Rock Mechanics AU - Meyer, L H I AU - Coggan, J S AU - Stead, D A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 147 EP - 152 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - mines KW - elasticity KW - Western Europe KW - three-dimensional models KW - elastic properties KW - stress KW - coal mines KW - Europe KW - excavations KW - United Kingdom KW - rock mechanics KW - Selby Mine KW - roads KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50320715?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=Three+dimensional+non-linear+modelling+of+the+effects+of+high+horizontal+stress+on+underground+excavation+face-end+stability&rft.au=Meyer%2C+L+H+I%3BCoggan%2C+J+S%3BStead%2C+D&rft.aulast=Meyer&rft.aufirst=L+H&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=147&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 18 N1 - Document feature - illus. N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - coal mines; elastic properties; elasticity; Europe; excavations; mines; roads; rock mechanics; Selby Mine; stress; three-dimensional models; United Kingdom; Western Europe ER - TY - JOUR T1 - A rippability index approach for characterizing weathered granites AN - 50319569; 1999-068645 AB - Resistance to ripping of large roadway cuts for a highway project in weathered granites was quantified by characteristic fracture spacings and representative unconfined compressive strengths of the rock. Fracture spacings of recovered core were analysed using simple power law (1-dimensional fractal) relationships. A characteristic length L (sub c) was identified, where L (sub c) was conjectured to be a limit for a self-organized critical (SOC) behavior consistent with disordered systems. Assuming rock mass to be a disordered system, the SOC behavior was resistance to ripping. The rippability index (RI) was a force computed as L (sub c) squared (area) times a representative rock particle unconfined compressive strength, and was compared to available ripping forces for various bulldozers. Rippability estimates by RI were compared to rippability characterization by other methods. JF - Proceedings - Symposium on Rock Mechanics AU - Rucker, Michael L A2 - Amadei, Bernard A2 - Kranz, Robert L. A2 - Scott, Gregg A. A2 - Smeallie, Peter H. Y1 - 1999 PY - 1999 DA - 1999 SP - 101 EP - 107 PB - A.A. Balkema, [location varies] VL - 37, Vol. 1 SN - 0586-3031, 0586-3031 KW - United States KW - igneous rocks KW - granites KW - rock mechanics KW - fractures KW - plutonic rocks KW - Payson Arizona KW - weathered materials KW - Arizona KW - Gila County Arizona KW - compressive strength KW - roads KW - 30:Engineering geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50319569?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Proceedings+-+Symposium+on+Rock+Mechanics&rft.atitle=A+rippability+index+approach+for+characterizing+weathered+granites&rft.au=Rucker%2C+Michael+L&rft.aulast=Rucker&rft.aufirst=Michael&rft.date=1999-01-01&rft.volume=37%2C+Vol.+1&rft.issue=&rft.spage=101&rft.isbn=905809099X&rft.btitle=&rft.title=Proceedings+-+Symposium+on+Rock+Mechanics&rft.issn=05863031&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - 37th U. S. rock mechanics symposium N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. N1 - Date revised - 1999-01-01 N1 - Number of references - 10 N1 - Document feature - illus. incl. 3 tables N1 - Last updated - 2012-06-07 N1 - CODEN - PSRMA6 N1 - SubjectsTermNotLitGenreText - Arizona; compressive strength; fractures; Gila County Arizona; granites; igneous rocks; Payson Arizona; plutonic rocks; roads; rock mechanics; United States; weathered materials ER - TY - JOUR T1 - Status of geologic mapping in Death Valley National Park; a database AN - 50311863; 2000-055672 JF - Open-File Report - U. S. Geological Survey AU - Jayko, A S AU - Essington, Mel AU - Heise, Bruce AU - Johnson, H E AU - McGrath, P W AU - Prichett, D W AU - Saucedo, G AU - Thompson, R A AU - Wagner, David L Y1 - 1999 PY - 1999 DA - 1999 SP - 5 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - bedrock KW - petrology KW - cartography KW - ArcGIS KW - data processing KW - ArcInfo KW - computer programs KW - California KW - geographic information systems KW - digital cartography KW - Death Valley KW - data bases KW - information systems KW - USGS KW - Nevada KW - 14:Geologic maps UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50311863?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Status+of+geologic+mapping+in+Death+Valley+National+Park%3B+a+database&rft.au=Jayko%2C+A+S%3BEssington%2C+Mel%3BHeise%2C+Bruce%3BJohnson%2C+H+E%3BMcGrath%2C+P+W%3BPrichett%2C+D+W%3BSaucedo%2C+G%3BThompson%2C+R+A%3BWagner%2C+David+L&rft.aulast=Jayko&rft.aufirst=A&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=5&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Status of geologic research and mapping, Death Valley National Park N1 - Copyright - GeoRef, Copyright 2014, American Geosciences Institute. N1 - Date revised - 2000-01-01 N1 - Number of references - 2 N1 - Availability - U. S. Geol. Surv., Denver, CO, United States N1 - PubXState - VA N1 - Last updated - 2014-03-14 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - ArcGIS; ArcInfo; bedrock; California; cartography; computer programs; data bases; data processing; Death Valley; digital cartography; geographic information systems; information systems; Nevada; petrology; United States; USGS ER - TY - JOUR T1 - The geological database as an essential component to ecological classification of lands; examples from the Ozarks of Missouri, USA AN - 50301343; 2001-053970 AB - Geologic mapping and other data coupled with the multivariate spatial analysis capability of GIS give scientists and land managers a powerful tool for testing ecological landtype models, implementing land classification and mapping schemes, and making land-use decisions. Vectorized USGS geologic map data at 1:24,000 and 1:100,000 scales are being made available in ARC/INFO, ArcView, and SDTS formats for use in GIS. These data are used by earth science researchers, land managers and government entities to enhance land studies and land-use planning. The State of Missouri and the U. S. Forest Service (USFS) are developing an ecological classification of lands for the entire state using the standard USFS hierarchy of ecological units. Information is being integrated on geology, landform, soils and vegetation at Landscape (ten to one hundred square miles), Site (ten to one hundred acres), and Phase (local variants within sites) levels of the hierarchy. Geo-landforms in a GIS environment are a good coarse-scale map of soil and vegetation patterns, improve existing soil maps and act as good predictor of vegetation patterns. As an example of application of this database, the National Park Service at the Ozarks National Scenic Riverways is using data from the ecological unit maps to plan areas for controlled burning within the park. Burns are performed to renew and enhance certain plant communities, so it is most cost- and effort-effective to be able to predict the locations for these communities. Conversely, geologists correlate between plant types and certain combinations of stratigraphic units and physiographic forms and use them as guides for identifying geologic contacts, especially in areas with poor bedrock exposure. Both the Eminence Dolomite-Gasconade Dolomite and Gasconade Dolomite-Roubidoux Formation contact intervals tend to have open glades and distinctive plant communities developed on them. JF - Abstracts with Programs - Geological Society of America AU - Weary, David J AU - Nigh, Tim A AU - Orndorff, Randall C AU - Putnam, Charles W AU - Anonymous Y1 - 1999 PY - 1999 DA - 1999 SP - 484 PB - Geological Society of America (GSA), Boulder, CO VL - 31 IS - 7 SN - 0016-7592, 0016-7592 KW - United States KW - ArcView KW - communities KW - Missouri KW - ArcGIS KW - data processing KW - mapping KW - landforms KW - Gasconade Dolomite KW - vegetation KW - Cambrian KW - Upper Cambrian KW - Ordovician KW - geographic information systems KW - multivariate analysis KW - data bases KW - ecology KW - Ozarks National Scenic Riverways KW - Eminence Dolomite KW - soils KW - Plantae KW - patterns KW - Paleozoic KW - statistical analysis KW - Roubidoux Formation KW - Ozark Mountains KW - ArcInfo KW - planning KW - Lower Ordovician KW - classification KW - information systems KW - land use KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/50301343?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Abstracts+with+Programs+-+Geological+Society+of+America&rft.atitle=The+geological+database+as+an+essential+component+to+ecological+classification+of+lands%3B+examples+from+the+Ozarks+of+Missouri%2C+USA&rft.au=Weary%2C+David+J%3BNigh%2C+Tim+A%3BOrndorff%2C+Randall+C%3BPutnam%2C+Charles+W%3BAnonymous&rft.aulast=Weary&rft.aufirst=David&rft.date=1999-01-01&rft.volume=31&rft.issue=7&rft.spage=484&rft.isbn=&rft.btitle=&rft.title=Abstracts+with+Programs+-+Geological+Society+of+America&rft.issn=00167592&rft_id=info:doi/ LA - English DB - GeoRef N1 - Conference title - Geological Society of America, 1999 annual meeting N1 - Copyright - GeoRef, Copyright 2012, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States N1 - Date revised - 2001-01-01 N1 - PubXState - CO N1 - Last updated - 2012-06-07 N1 - CODEN - GAAPBC N1 - SubjectsTermNotLitGenreText - ArcGIS; ArcInfo; ArcView; Cambrian; classification; communities; data bases; data processing; ecology; Eminence Dolomite; Gasconade Dolomite; geographic information systems; information systems; land use; landforms; Lower Ordovician; mapping; Missouri; multivariate analysis; Ordovician; Ozark Mountains; Ozarks National Scenic Riverways; Paleozoic; patterns; planning; Plantae; Roubidoux Formation; soils; statistical analysis; United States; Upper Cambrian; vegetation ER - TY - JOUR T1 - Tolerance of an Albino Fish to Ultraviolet-B Radiation AN - 20256975; 8763511 AB - We exposed albino and pigmented medaka Oryzias latipes to simulated solar ultraviolet-B (UVB) radiation to determine if albino medaka were less tolerant of UVB radiation than medaka pigmented with melanin. There was no difference in the number of albino and pigmented medaka that died during the exposure period. Spectrophotometric analyses of the outer dorsal skin layers from albino and pigmented medaka indicated that, prior to exposure, both groups of fish had similar amounts of an apparent colorless non-melanin photoprotective substance that appears to protect other fish species from UVB radiation. Our results indicate that albino medaka were as tolerant of UVB radiation as pigmented medaka because they had similar amounts of this photoprotective substance in the outer layers of the skin. JF - Environmental Science and Pollution Research International AU - Fabacher, D AU - Little, EE AU - Ostrander, G K AD - United States Geological Survey, Biological Resources Division, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, Missouri, 65201, USA Y1 - 1999 PY - 1999 DA - 1999 SP - 69 EP - 71 VL - 6 IS - 2 SN - 0944-1344, 0944-1344 KW - ASFA 1: Biological Sciences & Living Resources; Environment Abstracts KW - Tolerance KW - Oryzias latipes KW - Skin KW - Ultraviolet radiation KW - Fish KW - Freshwater KW - Freshwater fish KW - Pollution indicators KW - Toxicity tests KW - Q1 08422:Environmental effects KW - ENA 02:Toxicology & Environmental Safety UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20256975?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aenvabstractsmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+and+Pollution+Research+International&rft.atitle=Tolerance+of+an+Albino+Fish+to+Ultraviolet-B+Radiation&rft.au=Fabacher%2C+D%3BLittle%2C+EE%3BOstrander%2C+G+K&rft.aulast=Fabacher&rft.aufirst=D&rft.date=1999-01-01&rft.volume=6&rft.issue=2&rft.spage=69&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+and+Pollution+Research+International&rft.issn=09441344&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Tolerance; Ultraviolet radiation; Freshwater fish; Toxicity tests; Pollution indicators; Skin; Fish; Oryzias latipes; Freshwater ER - TY - JOUR T1 - Photoenhanced Toxicity of a Weathered Oil on Ceriodaphnia dubia Reproduction AN - 20239387; 8802911 AB - Traditionally, the toxic effects of petroleum have been investigated by conducting studies in the absence of ultraviolet radiation (UV). Photomediated toxicity is often not considered, and the toxic effects of an oil spill can be grossly underestimated. The toxicity of a weathered oil collected from a monitoring well at an abandoned oil field to Ceriodaphnia dubia was examined in the presence of UV. A solar simulator equipped with UVB, UVA, and cool white lamps was used to generate environmentally comparable solar radiation intensities. C. dubia were exposed to six concentrations of water accommodated fractions (WAF) of weath-ered oil in conjunction with three levels of laboratory simulated UV (Reference = < 0.002 mu W/cm 2 UVB 3.0 mu W/cm 2 UVA Low = 0.30 mu W/cm 2 UVB 75.0 mu W/cm 2 UVA High = 2.0 mu W/cm 2 UVB 340.0 mu W/cm 2 UVA) and visible light. Seven day static renewal bioassays were used to characterize WAF/UV toxicity. WAF toxicity significantly (p <0.05) increased when the organisms were exposed to WAF in the presence of UV. The photoenhanced toxicity of the WAF increased with WAF concentration within each UV regime. Relative to the reference light regime, the average number of neonates from adults exposed to 1.6 mg TPH/L decreased significantly by 20% within the low light regime, and by 60% within the high light regime. These results indicate that organisms exposed to dissolved-phase weathered oil in the presence of environmentally realistic solar radiation, exhibit 1.3-2.5 times greater sensitivity, relative to organisms exposed under traditional laboratory fluorescent lighing. JF - Environmental Science and Pollution Research International AU - Calfee, R P AU - Little, EE AU - Cleveland, L AU - Barron, M G AD - U.S. Geological Survey, Columbia Environmental Research Center, 4200 New Haven Road, Columbia, Missouri 65201, USA, robin_calfee@usgs.gov Y1 - 1999 PY - 1999 DA - 1999 SP - 207 EP - 212 VL - 6 IS - 4 SN - 0944-1344, 0944-1344 KW - Toxicology Abstracts; Pollution Abstracts; Aqualine Abstracts; ASFA 3: Aquatic Pollution & Environmental Quality; Environment Abstracts KW - Hydrological Regime KW - Solar radiation KW - Toxicity tests KW - Environmental factors KW - Oil KW - Ceriodaphnia dubia KW - U.V. radiation KW - Petroleum KW - Ultraviolet radiation KW - Oil Spills KW - Oil pollution KW - Oil Pollution KW - Oil spills KW - Solar Radiation KW - Sensitivity KW - Laboratories KW - Climate KW - Pollution research KW - Toxicity KW - Light effects KW - Bioassays KW - Bioaccumulation KW - Water Pollution Effects KW - Oil fields KW - Reproduction KW - Neonates KW - Crustaceans KW - X 24390:Radioactive Materials KW - ENA 09:Land Use & Planning KW - Q5 08504:Effects on organisms KW - AQ 00003:Monitoring and Analysis of Water and Wastes KW - P 6000:TOXICOLOGY AND HEALTH UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/20239387?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aaqualine&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Environmental+Science+and+Pollution+Research+International&rft.atitle=Photoenhanced+Toxicity+of+a+Weathered+Oil+on+Ceriodaphnia+dubia+Reproduction&rft.au=Calfee%2C+R+P%3BLittle%2C+EE%3BCleveland%2C+L%3BBarron%2C+M+G&rft.aulast=Calfee&rft.aufirst=R&rft.date=1999-01-01&rft.volume=6&rft.issue=4&rft.spage=207&rft.isbn=&rft.btitle=&rft.title=Environmental+Science+and+Pollution+Research+International&rft.issn=09441344&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Date revised - 2008-12-01 N1 - Last updated - 2014-05-07 N1 - SubjectsTermNotLitGenreText - Bioaccumulation; Climate; Ultraviolet radiation; Oil pollution; Toxicity; Solar radiation; Environmental factors; Toxicity tests; Oil spills; U.V. radiation; Petroleum; Reproduction; Pollution research; Neonates; Light effects; Oil; Sensitivity; Bioassays; Oil fields; Solar Radiation; Hydrological Regime; Laboratories; Water Pollution Effects; Oil Spills; Oil Pollution; Crustaceans; Ceriodaphnia dubia ER - TY - JOUR T1 - Decision analysis; a tool to make impact assessment work AN - 1840615512; 2016-093879 JF - Open-File Report - U. S. Geological Survey AU - Larsen, Deena Y1 - 1999 PY - 1999 DA - 1999 SP - 35 EP - 42 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - U. S. Bureau of Reclamation KW - reclamation KW - government agencies KW - water management KW - pollution KW - decision-making KW - environmental effects KW - environmental management KW - natural resources KW - planning KW - conservation KW - ecology KW - USGS KW - 22:Environmental geology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840615512?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Decision+analysis%3B+a+tool+to+make+impact+assessment+work&rft.au=Larsen%2C+Deena&rft.aulast=Larsen&rft.aufirst=Deena&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=35&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - https://pubs.usgs.gov/of/1999/0351/report.pdf https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Conference title - Decision support systems workshop N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - PubXState - VA N1 - Document feature - 1 table N1 - Last updated - 2016-11-17 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - conservation; decision-making; ecology; environmental effects; environmental management; government agencies; natural resources; planning; pollution; reclamation; U. S. Bureau of Reclamation; United States; USGS; water management ER - TY - JOUR T1 - A database-centered decision support system for the Watershed and River System Management Program (WARSMP) AN - 1840615486; 2016-093896 JF - Open-File Report - U. S. Geological Survey AU - Leavesley, G H AU - Fulp, T J AU - Markstrom, S L AU - Brewer, M S AU - Viger, R J AU - Parker, R S AU - Kuhn, G AU - King, D L Y1 - 1999 PY - 1999 DA - 1999 SP - 101 EP - 102 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - hydrology KW - programs KW - survey organizations KW - Watershed and River System Management Program KW - RiverWare KW - U. S. Geological Survey KW - U. S. Bureau of Reclamation KW - rivers and streams KW - government agencies KW - data processing KW - watersheds KW - water management KW - decision-making KW - decision support systems KW - data bases KW - USGS KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840615486?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=A+database-centered+decision+support+system+for+the+Watershed+and+River+System+Management+Program+%28WARSMP%29&rft.au=Leavesley%2C+G+H%3BFulp%2C+T+J%3BMarkstrom%2C+S+L%3BBrewer%2C+M+S%3BViger%2C+R+J%3BParker%2C+R+S%3BKuhn%2C+G%3BKing%2C+D+L&rft.aulast=Leavesley&rft.aufirst=G&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=101&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - https://pubs.usgs.gov/of/1999/0351/report.pdf https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Conference title - Decision support systems workshop N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - PubXState - VA N1 - Last updated - 2016-11-17 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - data bases; data processing; decision support systems; decision-making; government agencies; hydrology; programs; rivers and streams; RiverWare; survey organizations; U. S. Bureau of Reclamation; U. S. Geological Survey; USGS; water management; Watershed and River System Management Program; watersheds ER - TY - JOUR T1 - Agricultural Water Resources Decision Support System (AWARDS) AN - 1840614672; 2016-093895 JF - Open-File Report - U. S. Geological Survey AU - Brower, Al Y1 - 1999 PY - 1999 DA - 1999 SP - 101 PB - U. S. Geological Survey, Reston, VA SN - 0196-1497, 0196-1497 KW - United States KW - NEXRAD KW - Agricultural Water Resource Decision Support System KW - agriculture KW - radar methods KW - decision-making KW - case studies KW - Oregon KW - Oklahoma KW - Rogue River basin KW - Rio Grande Valley KW - water resources KW - USGS KW - land use KW - climate KW - 21:Hydrogeology UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/1840614672?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Ageorefmodule&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=Open-File+Report+-+U.+S.+Geological+Survey&rft.atitle=Agricultural+Water+Resources+Decision+Support+System+%28AWARDS%29&rft.au=Brower%2C+Al&rft.aulast=Brower&rft.aufirst=Al&rft.date=1999-01-01&rft.volume=&rft.issue=&rft.spage=101&rft.isbn=&rft.btitle=&rft.title=Open-File+Report+-+U.+S.+Geological+Survey&rft.issn=01961497&rft_id=info:doi/ L2 - https://pubs.usgs.gov/of/1999/0351/report.pdf https://pubs.er.usgs.gov/browse/usgs-publications/OFR LA - English DB - GeoRef N1 - Conference title - Decision support systems workshop N1 - Copyright - GeoRef, Copyright 2016, American Geosciences Institute. N1 - Date revised - 2016-01-01 N1 - PubXState - VA N1 - Last updated - 2016-11-17 N1 - CODEN - XGROAG N1 - SubjectsTermNotLitGenreText - Agricultural Water Resource Decision Support System; agriculture; case studies; climate; decision-making; land use; NEXRAD; Oklahoma; Oregon; radar methods; Rio Grande Valley; Rogue River basin; United States; USGS; water resources ER - TY - JOUR T1 - Why Don't Parks and Sanctuaries Protect Marine Fish Too? AN - 18009244; 4695064 AB - Many people believe that marine wilderness--i.e., areas of the sea where human influences are minimized and no extractive uses are allowed--protects biodiversity, restores and sustains fisheries, provides insurance for management errors, and produces tourism industries. In spite of the apparent benefits, and in stark contrast to the proliferation of wilderness designations in the terrestrial environment, very little marine wilderness has been designated worldwide. Marine protected areas (MPAs) abound, but we afford few portions of the sea enough protection from fisheries harvest and other extractive activities to function as wilderness. Why?. JF - George Wright Forum AU - Davis, GE AD - U. S. National Park Service, Channel Islands National Park, 1901 Spinnaker Drive, Ventura, California 93001, USA, gary_davis@nps.gov Y1 - 1999 PY - 1999 DA - 1999 SP - 88 EP - 96 VL - 16 IS - 2 SN - 0732-4715, 0732-4715 KW - ASFA 3: Aquatic Pollution & Environmental Quality KW - Marine KW - INE, USA, California, Channel Is. KW - World Oceans KW - Fishery regulations KW - Fishery resources KW - Pisces KW - Marine fish KW - Protected resources KW - Fishery management KW - Marine environment KW - Marine parks KW - Ecosystem management KW - Nature conservation KW - Sanctuaries KW - Q5 08523:Conservation, wildlife management and recreation UR - http://libproxy.lib.unc.edu/login?url=http://search.proquest.com/docview/18009244?accountid=14244 L2 - http://vb3lk7eb4t.search.serialssolutions.com/?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&rfr_id=info:sid/ProQ%3Aasfaaquaticpollution&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.jtitle=George+Wright+Forum&rft.atitle=Why+Don%27t+Parks+and+Sanctuaries+Protect+Marine+Fish+Too%3F&rft.au=Davis%2C+GE&rft.aulast=Davis&rft.aufirst=GE&rft.date=1999-01-01&rft.volume=16&rft.issue=2&rft.spage=88&rft.isbn=&rft.btitle=&rft.title=George+Wright+Forum&rft.issn=07324715&rft_id=info:doi/ LA - English DB - ProQuest Environmental Science Collection N1 - Last updated - 2014-05-06 N1 - SubjectsTermNotLitGenreText - Marine fish; Protected resources; Fishery management; Marine environment; Nature conservation; Ecosystem management; Marine parks; Fishery regulations; Sanctuaries; Fishery resources; Pisces; INE, USA, California, Channel Is.; World Oceans; Marine ER - TY - JOUR T1 - Multi-year persistence of oil mousse on high energy beaches distant from the Exxon Valdez spill origin AN - 17692109; 4816760 AB - This study concentrated on 5 sites that were contaminated by mousse rafts in 1989 on the Shelikof Strait coastline of Katmai National Park and Preserve (NP&P). Oil mousse persisted at the sites where it was stranded in the intertidal zone under a lag of large boulders which prevented waves from disturbing the oil. Weathering of the mousse was slight showing negligible changes in PAH compared to 11 d old Exxon Valdez crude. Low ecological sensitivity ratings previously applied to exposed, rocky shorelines needed to be modified. Oil stranded on the Katmai NP&P coast was considered not to be threat because of its small amount and sequestered state. There are 41 references. JF - Marine Pollution Bulletin AU - Irvine, G V AU - Mann, D H AU - Short, J W AD - National Park Service, Anchorage, Alas. Y1 - 1999 PY - 1999 DA - 1999 SP - 572 EP - 584 VL - 38 IS - 7 SN - 0025-326X, 0025-326X KW - Katmai KW - Np KW - Shelikof KW - Aqualine Abstracts KW - Coastlines KW - Untreated KW - Persistence KW - Food (see also Animal foodstuffs) KW - Threat KW - Sequestering KW - Sensitiviti