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Page 277, results 6901 - 6925

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Numerical simulations of depressurization-induced gas production from an interbedded turbidite gas hydrate-bearing sedimentary section in the offshore India: Site NGHP-02-16 (Area-B)
Evgeniy M. Myshakin, Yongkoo Seol, Jeen-Shang Lin, Shun Uchida, Timothy Collett, Ray Boswell
2019, Journal of Marine and Petroleum Geology (108) 619-638
The recent National Gas Hydrate Program Expedition 02 (NGHP-02) identified the existence of gas hydrate-bearing sand reservoirs at a number of sites in the offshore of India including Site NGHP-02-16 in Area-B of the Krishna-Godavari Basin. The architecture of that gas hydrate accumulation is characterized by thin, gas hydrate-bearing, high...
India National Gas Hydrate Program Expedition 02 summary of scientific results: Numerical simulation of reservoir response to depressurization
Ray Boswell, Evgeniy Myshakin, George Moridis, Yoshihiro Konno, Timothy S. Collett, Matthew Reagan, Taiwo Ajayi, Yongkoo Seol
2019, Journal of Marine and Petroleum Geology (108) 154-166
The India National Gas Hydrate Program Expedition 02 (NGHP-02) discovered gas hydrate at high saturation in sand reservoirs at several sites in the deepwater Bay of Bengal. To assess the potential response of those deposits to scientific depressurization experiments, comprehensive geologic models were constructed to enable numerical simulation for...
Reanalysis of the U.S. Geological Survey Benchmark Glaciers: Long-term insight into climate forcing of glacier mass balance
Shad O’Neel, Christopher J. McNeil, Louis C. Sass, Caitlyn Florentine, Emily Baker, Erich H. Peitzsch, Daniel J McGrath, Andrew G. Fountain, Daniel B. Fagre
2019, Journal of Glaciology 850-866
Mountain glaciers integrate climate processes to provide an unmatched signal of regional climate forcing. However, extracting the climate signal via intercomparison of regional glacier mass balance records can be problematic when methods for extrapolating and calibrating direct glaciological measurements are mixed or inconsistent. To address this problem, we reanalyzed and...
Analytical framework to estimate water use associated with continuous oil and gas development
Joshua F. Valder, Ryan R. McShane, Theodore B. Barnhart, Spencer L. Wheeling, Janet M. Carter, Kathleen M. Macek-Rowland, Gregory C. Delzer, Joanna N. Thamke
2019, Scientific Investigations Report 2019-5100
An analytical framework was designed to estimate water use associated with continuous oil and gas (COG) development in support of the U.S. Geological Survey Water Availability and Use Science Program. This framework was developed to better understand the relation between the production of COG resources for energy and the amount...
Linking sedimentation and erosion patterns with reservoir morphology and dam operations during streambed drawdowns in a flood-control reservoir in the Oregon Cascades
Mackenzie K. Keith, Laurel E. Stratton
2019, Conference Paper, Proceedings of SEDHYD 2019
Since water-year (WY) 2011, pool levels at Fall Creek Lake, Oregon, are temporarily lowered to an elevation near historical streambed each fall, creating free-flowing channel conditions that facilitate downstream passage of juvenile spring Chinook salmon. These drawdown operations have also mobilized substantial quantities of predominantly fine (<2 mm) reservoir sediment...
Anderson Ranch wetlands hydrologic characterization in Taos County, New Mexico
Amy E. Galanter, Zachary M. Shephard, Pamela Herrera-Olivas
2019, Open-File Report 2019-1100
The Anderson Ranch property (study area), located in Taos County, north-central New Mexico, was transferred from Chevron Mining, Inc. (CMI) to the Bureau of Land Management (BLM) as part of a Natural Resource Damage Assessment and Restoration (NRDAR) court-ordered settlement. The study area supports freshwater emergent wetlands and freshwater ponds....
Integration of eDNA-based biological monitoring within the US Geological Survey’s national streamgage network
David S. Pilliod, Matthew Laramie, Dorene McCoy, Scott Maclean
2019, Journal of the American Water Resources Association (55) 1505-1518
This study explores the feasibility and utility of integrating environmental DNA (eDNA) assessments of species occurrences into the United States (U.S.) Geological Survey’s national streamgage network. We used an existing network of five gages in southwest Idaho to explore the type of information that could be gained as well as...
Water resources on Guam—Potential impacts of and adaptive response to climate change
Stephen B. Gingerich, Adam G. Johnson, Sarah N. Rosa, Mathieu D. Marineau, Scott Wright, Lauren E. Hay, Matthew J. Widlansky, John W. Jenson, Corinne I. Wong, Jay L. Banner, Melissa L. Finucane, Victoria W. Keener
2019, Scientific Investigations Report 2019-5095
The goals of this joint U.S. Geological Survey, University of Hawaiʻi, University of Guam, University of Texas, and East-West Center study were to (1) provide basic understanding about water resources for U.S. Department of Defense installations on Guam and (2) assess the resulting effect of sea-level rise and a changing...
A fuzzy logic approach for estimating recovery factors of miscible CO2-EOR projects in the United States
C. Ozgen Karacan
2019, Journal of Petroleum Science and Engineering (184)
"Recovery factor (RF) is one of the most fundamental parameters that define engineering and economical success of any operational phase in oil and gas production. The effectiveness of the operation, e.g. CO2-EOR (enhanced oil recovery with carbon dioxide injection), is usually defined by multiplying the resultant recovery factor by the...
DNA Sequencing confirms Tundra Bean Goose (Anser serrirostris serrirostris) occurrence in the Mississippi Alluvial Valley in Arkansas, USA
Douglas C. Osborne, Robert E. Wilson, Lindsay Carlson, Sarah A. Sonsthagen, Sandra L. Talbot
2019, Waterbirds (42) 333-342
—First sighting records of rare occurrences may become increasingly important for recognizing changes in distribution, changes in migratory strategies, or increases in hybridization. We focumented the first record of a Tundra Bean Goose in the Mississippi Alluvial Valley, the outlet and historic floodplain for much of North America and one...
Status of groundwater-level altitudes and long-term groundwater-level changes in the Chicot, Evangeline, and Jasper aquifers, Houston-Galveston region, Texas, 2019
Christopher L. Braun, Jason K. Ramage, Sachin D. Shah
2019, Scientific Investigations Report 2019-5089
Since the early 1900s, most of the groundwater withdrawals in the Houston-Galveston region, Texas, have been from the three primary aquifers that compose the Gulf Coast aquifer system—the Chicot, Evangeline, and Jasper aquifers. Withdrawals from these aquifers are used for municipal supply, commercial and industrial use, and irrigation. This report,...
Multivariate analysis of hydrochemical data for Jewel Cave, Wind Cave, and surrounding areas
Andrew J. Long, James B. Paces, William G. Eldridge
2019, Natural Resource Report NPS/JECA/NRR—2019/1883
Jewel Cave National Monument and Wind Cave National Park in South Dakota contain two of the six longest caves worldwide. These caves contain subterranean lakes that are important points of intersection between the water table of the Madison aquifer and the caves. During 2015 to 2017, several subterranean lakes were...
Using the stream salmonid simulator (S3) to assess juvenile Chinook salmon (Oncorhynchus tshawytscha) production under historical and proposed action flows in the Klamath River, California
John M. Plumb, Russell W. Perry, Nicholas A. Som, Julie Alexander, Nicholas J. Hetrick
2019, Open-File Report 2019-1099
Executive SummaryThe production of Klamath River fall Chinook salmon (Oncorhynchus tshawytscha) in northern California and southern Oregon is thought to be limited by poor survival during freshwater juvenile life stages, in part a result of Ceratonova shasta—a highly infectious disease that can lead to high fish mortality. Higher flushing...
Climatic variation drives growth potential of juvenile Chinook Salmon (Oncorhynchus tshawytscha) along a sub-Arctic boreal riverscape
Jeffrey A. Falke, Brock M. Huntsman, Erik R. Schoen
2019, Book chapter, Advances in understanding landscape influences on freshwater habitats and biological assemblages
Climatic variation is a key driver of freshwater physical processes that in turn control stream fish growth and population dynamics at fine spatial scales and species distributions across broad landscapes. A recent downturn in Chinook Salmon returns across the Yukon River basin, Alaska, USA, and Yukon Territories, Canada, has led...
Application of the Stream Salmonid Simulator (S3) to Klamath River fall Chinook salmon (Oncorhynchus tshawytscha), California—Parameterization and calibration
Russell W. Perry, John M. Plumb, Edward C. Jones, Nicholas A. Som, Thomas B. Hardy, Nicholas J. Hetrick
2019, Open-File Report 2019-1107
Executive SummaryIn this report, we describe application of the Stream Salmonid Simulator (S3) to Chinook salmon (Oncorhynchus tshawytscha) in the Klamath River between Keno Dam in southern Oregon and the ocean in northern California. S3 is a deterministic life-stage-structured population model that tracks daily growth, movement, and survival...
Freshwater availability in Guam with projected changes in climate
Stephen Gingerich, Victoria Keener, Melissa L. Finucane
2019, Report
Guam receives 85 to 116 inches of rain a year, two-thirds of which has historically fallen during the wet season. On average, three tropical storms and one typhoon pass within 80 nautical miles of Guam each year, generally during the rainy season. Both drought and flooding can impact freshwater supply...
Modeling long-term effects of fuel treatments on fuel loads and fire regimes in the Great Basin
Nancy F. Glenn, Alejandro N Flores, Douglas J. Shinneman, David S. Pilliod
2019, Report
The principal motivation for this study is that sagebrush-steppe ecosystems are undergoing significant state changes, and land managers are challenged with optimizing their resources for both short- and long-term use. Yet, limited knowledge is available regarding how the sagebrush-steppe will respond to environmental changes related to precipitation and temperature regimes,...
Guam's water resources
Stephen Gingerich, Victoria Keener, Melissa L. Finucane
2019, Report
How do climate and humans impact freshwater resources, and how can we plan for change?...
Discovering blind geothermal systems in the Great Basin Region: An integrated geologic and geophysical approach for establishing geothermal play fairways: All phases
E. Faulds James, Nicholas H. Hinz, Mark Coolbaugh, Bridget Ayling, Jonathan M.G. Glen, Jason W. Craig, Emma McConnville, Drew L. Siler, John Queen, Jeff Witter, Christian Hardwick
2019, Report
Most geothermal resources in the Great Basin region of the western USA are blind, and thus the discovery of new commercial-grade systems requires synthesis of favorable characteristics for geothermal activity. The geothermal play fairway concept involves integration of multiple parameters indicative of geothermal activity to identify promising...
Scenarios of climate adaptation potential on protected working lands from management of soils
Kristin B. Byrd, P. Alvarez, Benjamin Sleeter, Lorraine E. Flint, D. Richard Cameron, J. Creque
2019, Environmental Research Letters (14)
Management of protected lands may enhance ecosystem services that conservation programs were designed to protect. Practices that build soil organic matter (SOM) on agricultural lands also increase soil water holding capacity, potentially reducing climatic water deficit (CWD), increasing actual evapotranspiration (AET) and increasing groundwater recharge (RCH). We developed nine...
Groundwater salinity and the effects of produced water disposal in the Lost Hills-Belridge oilfields, Kern County, California
Janice M. Gillespie, Tracy Davis, Michael J. Stephens, Lyndsay B. Ball, Matthew K. Landon
2019, Environmental Geosciences (26) 73-96
Increased oil and gas production in many areas has led to concerns over the effects these activities may be having on nearby groundwater quality. In this study we determine the lateral and vertical extent of groundwater with less than 10,000 milligrams per liter (mg/l) total dissolved solids (TDS) near...
Movement and apparent survival of acoustically tagged juvenile late-fall run chinook salmon released upstream of Shasta Reservoir, California
John Plumb, Amy C. Hansen, Noah S. Adams, Scott D. Evans, John Hannon
2019, San Francisco Estuary and Watershed Science (17)
Stakeholder interests have spurred the reintroduction of the critically endangered populations of Chinook Salmon to tributaries upstream of Shasta Dam, in northern California. We released two groups of acoustically tagged, juvenile hatchery, late-fall Chinook Salmon to determine how juvenile salmon would distribute and survive. We measured travel times to Shasta...
Impacts to wildlife of wind energy siting and operation in the United States
Taber Allison, James E. Diffendorfer, Erin Baerwald, Julie Beston, David Drake, Amanda Hale, Cris Hein, Manuela M. Huso, Scott Loss, Jeffrey E. Lovich, Dale Strickland, Kate Williams, Virginia Winder
2019, Issues in Ecology 1-24
Electricity from wind energy is a major contributor to the strategy to reduce greenhouse gas emissions from fossil fuel use and thus reduce the negative impacts of climate change. Wind energy, like all power sources, can have adverse impacts on wildlife. After nearly 25 years of focused research, these impacts...
Characterization and load estimation of polychlorinated biphenyls (PCBs) from selected Rio Grande tributary stormwater channels in the Albuquerque urbanized area, New Mexico, 2017–18
Zachary M. Shephard, Kathleen E. Conn, Kimberly R. Beisner, Alanna D. Jornigan, Christina F. Bryant
2019, Open-File Report 2019-1106
In cooperation with the New Mexico County of Bernalillo, the U.S. Geological Survey characterized potential polychlorinated biphenyl (PCB) concentration and estimated loading into the Rio Grande from watersheds that are under the county’s jurisdiction. Water and sediment samples were collected in 2017–18 from six sites within four stormwater drainage basins...
Generalized potentiometric-surface map and groundwater flow directions in the Madison aquifer near Jewel Cave National Monument, South Dakota
Todd M. Anderson, William G. Eldridge, Joshua F. Valder, Michael E. Wiles
2019, Scientific Investigations Report 2019-5098
A generalized potentiometric-surface map of the Madison aquifer near Jewel Cave National Monument was constructed using water levels measured from calendar years 1988 to 2019 in 24 groundwater wells and 4 subterranean cave lakes interpreted to be in hydraulic connection with the aquifer. The map indicated that groundwater near Jewel...