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Page 1593, results 39801 - 39825

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Not all publications have extents, not all extents are completely accurate
Approximating tasseled cap values to evaluate brightness, greenness, and wetness for the Advanced Land Imager (ALI)
Kristina H. Yamamoto, Michael P. Finn
2012, Scientific Investigations Report 2012-5057
The Tasseled Cap transformation is a method of image band conversion to enhance spectral information. It primarily is used to detect vegetation using the derived brightness, greenness, and wetness bands. An approximation of Tasseled Cap values for the Advanced Land Imager was investigated and compared to the Landsat Thematic Mapper...
Alaska Geochemical Database - Mineral Exploration Tool for the 21st Century - PDF of presentation
Matthew Granitto, Jeanine M. Schmidt, Keith A. Labay, Nora B. Shew, Bruce M. Gamble
2012, Open-File Report 2012-1060
The U.S. Geological Survey has created a geochemical database of geologic material samples collected in Alaska. This database is readily accessible to anyone with access to the Internet. Designed as a tool for mineral or environmental assessment, land management, or mineral exploration, the initial version of the Alaska Geochemical Database...
Assessment of undiscovered oil and gas resources of the South Africa Coastal Province, Africa
Michael E. Brownfield, Christopher J. Schenk, Ronald R. Charpentier, Timothy R. Klett, Troy A. Cook, Richard M. Pollastro
2012, Fact Sheet 2012-3030
The South Africa Coastal Province along the South Africa coast recently was assessed for undiscovered, technically recoverable oil, natural gas, and natural gas liquids resources as part of the U.S. Geological Survey's (USGS) World Oil and Gas Assessment. Using a geology-based assessment methodology, the USGS estimated mean volumes of 2.13...
US nonfuel mineral exploration: Selected findings for 1995-2009 from the USGS
David R. Wilburn, Donald I. Bleiwas
2012, Mining Engineering
The U.S. Geological Survey (USGS) has been systematically monitoring global nonfuel mineral exploration activities to anticipate the location and quantity of future nonfuel minerals supply for about 100 commodities, with an emphasis on precious and base metals. Since 1995, the USGS has developed an annual list of 100 noteworthy...
Assessment of undiscovered oil and gas resources of four East Africa Geologic Provinces
Michael E. Brownfield, Christopher J. Schenk, Ronald R. Charpentier, Timothy R. Klett, Troy A. Cook, Richard M. Pollastro, Marilyn E. Tennyson
2012, Fact Sheet 2012-3039
Four geologic provinces along the east coast of Africa recently were assessed for undiscovered, technically recoverable oil, natural gas, and natural gas liquids resources as part of the U.S. Geological Survey's (USGS) World Oil and Gas Assessment. Using a geology-based assessment methodology, the USGS estimated mean volumes of 27.6 billion...
Water quality and the composition of fish and macroinvertebrate communities in the Devils and Pecos Rivers within and upstream from the Amistad National Recreation Area, Texas, 2005-7
J. Bruce Moring
2012, Scientific Investigations Report 2012-5038
To gain a better understanding of the water quality and status of fish and macroinvertebrate communities, the U.S. Geological Survey, in cooperation with the National Park Service and Amistad National Recreation Area, completed a reconnaissance-level survey of the water quality and fish and macroinvertebrate communities in the Devils and Pecos...
Evaluation of fault-normal/fault-parallel directions rotated ground motions for response history analysis of an instrumented six-story building
Erol Kalkan, Neal S. Kwong
2012, Open-File Report 2012-1058
According to regulatory building codes in United States (for example, 2010 California Building Code), at least two horizontal ground-motion components are required for three-dimensional (3D) response history analysis (RHA) of buildings. For sites within 5 km of an active fault, these records should be rotated to fault-normal/fault-parallel (FN/FP) directions, and...
Groundwater quality in the Upper Susquehanna River Basin, New York, 2009
James E. Reddy, Amy J. Risen
2012, Open-File Report 2012-1045
Water samples were collected from 16 production wells and 14 private residential wells in the Upper Susquehanna River Basin from August through December 2009 and were analyzed to characterize the groundwater quality in the basin. Wells at 16 of the sites were completed in sand and gravel aquifers, and 14...
Status and understanding of groundwater quality in the Tahoe-Martis, Central Sierra, and Southern Sierra study units, 2006-2007--California GAMA Priority Basin Project
Miranda S. Fram, Kenneth Belitz
2012, Scientific Investigations Report 2011-5216
Groundwater quality in the Tahoe-Martis, Central Sierra, and Southern Sierra study units was investigated as part of the Priority Basin Project of the California Groundwater Ambient Monitoring and Assessment (GAMA) Program. The three study units are located in the Sierra Nevada region of California in parts of Nevada, Placer, El...
Shifts in identity and activity of methanotrophs in arctic lake sediments in response to temperature changes
Ruo He, Matthew J. Wooller, John W. Pohlman, John Quensen, James M. Tiedje, Mary Beth Leigh
2012, Applied and Environmental Microbiology (78) 4715-4723
Methane (CH4) flux to the atmosphere is mitigated via microbial CH4 oxidation in sediments and water. As arctic temperatures increase, understanding the effects of temperature on the activity and identity of methanotrophs in arctic lake sediments is important to predicting future CH4 emissions. We used DNA-based stable-isotope probing (SIP), quantitative PCR (Q-PCR),...
Groundwater quality in the Central Sierra Nevada, California
Miranda S. Fram, Kenneth Belitz
2012, Fact Sheet 2012-3010
Groundwater provides more than 40 percent of California's drinking water. To protect this vital resource, the State of California created the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The Priority Basin Project of the GAMA Program provides a comprehensive assessment of the State's groundwater quality and increases public access to...
Groundwater quality in the Southern Sierra Nevada, California
Miranda S. Fram, Kenneth Belitz
2012, Fact Sheet 2012-3011
Groundwater provides more than 40 percent of California's drinking water. To protect this vital resource, the State of California created the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The Priority Basin Project of the GAMA Program provides a comprehensive assessment of the State's groundwater quality and increases public access to...
Groundwater quality in the Tahoe and Martis Basins, California
Miranda S. Fram, Kenneth Belitz
2012, Fact Sheet 2011-3143
Groundwater provides more than 40 percent of California's drinking water. To protect this vital resource, the State of California created the Groundwater Ambient Monitoring and Assessment (GAMA) Program. The Priority Basin Project of the GAMA Program provides a comprehensive assessment of the State's groundwater quality and increases public access to...
The effect of swab sample choice on the detection of avian influenza in apparently healthy wild ducks
S. Ip, Robert J. Dusek, Dennis M. Heisey
2012, Avian Diseases (56) 114-119
Historically, avian influenza viruses have been isolated from cloacal swab specimens, but recent data suggest that the highly pathogenic avian influenza (HPAI) H5N1 virus can be better detected from respiratory tract specimens. To better understand how swab sample type affects the detection ability of low pathogenic avian influenza (LPAI) viruses...
Bayesian shared frailty models for regional inference about wildlife survival
D.M. Heisey
2012, Animal Conservation (15) 127-128
One can joke that 'exciting statistics' is an oxymoron, but it is neither a joke nor an exaggeration to say that these are exciting times to be involved in statistical ecology. As Halstead et al.'s (2012) paper nicely exemplifies, recently developed Bayesian analyses can now be used to extract insights...
Hydrogeologic framework of the Wood River Valley aquifer system, south-central Idaho
James R. Bartolino, Candice B. Adkins
2012, Scientific Investigations Report 2012-5053
The Wood River Valley contains most of the population of Blaine County and the cities of Sun Valley, Ketchum, Hailey, and Bellevue. This mountain valley is underlain by the alluvial Wood River Valley aquifer system, which consists primarily of a single unconfined aquifer that underlies the entire valley, an underlying...
Leopardus braccatus (Carnivora: Felidae)
Anita L. Barstow, David M. Leslie Jr.
2012, Mammalian Species (44) 16-25
Leopardus braccatus (Cope, 1889) is a small felid—not much larger than a domestic house cat—commonly called the Pantanal cat. No comprehensive surveys have been conducted to determine how many L. braccatus exist in the wild. It is found in humid, warm grasslands and wooded areas of extreme northwestern Argentina, southwestern and south- and...
DOI Climate Science Centers--Regional science to address management priorities
Robin O'Malley
2012, Fact Sheet 2012-3048
Our Nation's lands, waters, and ecosystems and the living and cultural resources they contain face myriad challenges from invasive species, the effects of changing land and water use, habitat fragmentation and degradation, and other influences. These challenges are compounded by increasing influences from a changing climate—higher temperatures, increasing droughts, floods,...
Real-time seismic monitoring of instrumented hospital buildings
Erol Kalkan, Jon Peter B. Fletcher, William S. Leith, William S. McCarthy, Krishna Banga
2012, Fact Sheet 2012-3028
In collaboration with the Department of Veterans Affairs (VA), the U.S. Geological Survey's National Strong Motion Project has recently installed sophisticated seismic monitoring systems to monitor the structural health of two hospital buildings at the Memphis VA Medical Center in Tennessee. The monitoring systems in the Bed Tower and Spinal...
Water resources of the Iroquois National Wildlife Refuge, Genesee and Orleans counties, New York 2008-2010
William M. Kappel, Matthew B. Jennings
2012, Scientific Investigations Report 2012-5027
A 2-year study of the water resources of the Iroquois National Wildlife Refuge (Refuge) in western New York was carried out in 2009-2010 in cooperation with the U.S. Fish and Wildlife Service to assist the Refuge in the development of a 15-year Comprehensive Conservtion plan. The study focused on Oak...
Geospatial database for regional environmental assessment of central Colorado.
Stan E. Church, Carma A. San Juan, David L. Fey, Travis S. Schmidt, Terry L. Klein, Ed H. DeWitt, Richard B. Wanty, Philip L. Verplanck, Katharine A. Mitchell, Monique G. Adams, LaDonna M. Choate, Todor I. Todorov, Barnaby W. Rockwell, Luke McEachron, Michael W. Anthony
2012, Data Series 614
In conjunction with the future planning needs of the U.S. Department of Agriculture, Forest Service, the U.S. Geological Survey conducted a detailed environmental assessment of the effects of historical mining on Forest Service lands in central Colorado. Stream sediment, macroinvertebrate, and various filtered and unfiltered water quality samples were collected...
Hunting influences the diel patterns in habitat selection by northern pintails Anas acuta
Michael L. Casazza, Peter S. Coates, Michael R. Miller, Cory T. Overton, Daniel R. Yparraguirre
2012, Wildlife Biology (18) 1-13
Northern pintail Anas acuta (hereafter pintail) populations wintering within Suisun Marsh, a large estuarine managed wetland near San Francisco Bay, California,USA, have declined markedly over the last four decades. The reasons for this decline are unclear. Information on how hunting and other factors influence the selection of vegetation types and...
Short-term response of Dicamptodon tenebrosus larvae to timber management in southwestern Oregon
Niels Leuthold, M. J. Adams, John P. Hayes
2012, Journal of Wildlife Management (76) 28-37
In the Pacific Northwest, previous studies have found a negative effect of timber management on the abundance of stream amphibians, but results have been variable and region specific. These studies have generally used survey methods that did not account for differences in capture probability and focused on stands that were...
Channel-pattern and cross-section changes in selected reaches of Elkhead Creek, northwestern Colorado, 1938-2009
John G. Elliott, Steven J. Char
2012, Scientific Investigations Report 2011-5201
Elkhead Creek near Craig, Colorado, is a sinuous, meandering stream whose lower 9 river miles have been regulated by Elkhead Reservoir and Dam since 1974. The U.S. Geological Survey, in cooperation with the Colorado River Water Conservation District, conducted a study from 2009 to 2010 that evaluated channel-pattern and cross-section...