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Page 121, results 3001 - 3025

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Evaluation of autonomous recording units for detecting 3 species of secretive marsh birds
Anna M. Sidie-Slettehahl, Kent C. Jensen, Rex R. Johnson, Todd W. Arnold, Jane E. Austin, Joshua D. Stafford
2015, Wildlife Society Bulletin (39) 626-634
Population status and habitat use of yellow rails (Coturnicops noveboracensis), Nelson's sparrows (Ammodramus nelsoni), and Le Conte's sparrows (A. leconteii) are poorly known, so standardized surveys of these species are needed to inform conservation planning and management. A protocol for monitoring secretive marsh birds exists; however, these species regularly call...
A water-budget approach to estimating potential groundwater recharge from two domestic sewage disposal fields in eastern Bernalillo County, New Mexico, 2011-12
Dianna M. Crilley, Jake W. Collison
2015, Scientific Investigations Report 2015-5060
Eastern Bernalillo County, New Mexico, is a historically rural area that in recent years has experienced an increase in population and in the construction of new housing units, most of which are not connected to a centralized wastewater treatment system. Increasing water use has raised concerns about the effect of...
Sources of high-chloride water and managed aquifer recharge in an alluvial aquifer in California, USA
David O’Leary, John A. Izbicki, Loren F. Metzger
2015, Hydrogeology Journal (23) 1515-1533
As a result of pumping in excess of recharge, water levels in alluvial aquifers within the Eastern San Joaquin Groundwater Subbasin, 130 km east of San Francisco (California, USA), declined below sea level in the early 1950s and have remained so to the present. Chloride concentrations in some wells increased...
Mapping surficial minerals at high latitudes: The USGS 2014 imaging spectrometer data collection in Alaska
Raymond F. Kokaly, Todd M. Hoefen, Garth Graham, Karen Kelly, Michaela Johnson, Bernard Hubbard, Richard Goldfarb
2015, Conference Paper
Passive optical remote sensing of high latitude regions faces many challenges including a short acquisition season and poor illumination due to low solar elevation. Additional complications are encountered in the identification of surface minerals for mineral resource characterization because minerals of interest commonly are exposed on steep terrain, further challenging...
Preliminary interpretation of industry two-dimensional seismic data from Susitna Basin, south-central Alaska
Kristen A. Lewis, Christopher J. Potter, Anjana K. Shah, Richard G. Stanley, Peter J. Haeussler, Richard W. Saltus
2015, Open-File Report 2015-1138
Located approximately 80 kilometers northwest of Anchorage, Alaska, the Susitna Basin is a complex sedimentary basin whose tectonic history has been poorly understood. Recent interpretation of two-dimensional seismic reflection data integrated with well, aeromagnetic, and gravity data provides new insights into the structural and stratigraphic nature of the basin. This report...
Lithostratigraphic, borehole-geophysical, hydrogeologic, and hydrochemical data from the East Bay Plain, Alameda County, California
Michelle Sneed, Patricia Orlando, James W. Borchers, Rhett R. Everett, Michael Solt, Mary McGann, Heather Lowers, Shannon Mahan
2015, Data Series 890
The U.S. Geological Survey, in cooperation with the East Bay Municipal Utility District, carried out an investigation of aquifer-system deformation associated with groundwater-level changes at the Bayside Groundwater Project near the modern San Francisco Bay shore in San Lorenzo, California. As a part of the Bayside Groundwater Project, East...
Analysis of storm-tide impacts from Hurricane Sandy in New York
Christopher Schubert, Ronald Busciolano, Paul P. Hearn Jr., Ami N. Rahav, Riley Behrens, Jason S. Finkelstein, Jack Monti Jr., Amy E. Simonson
2015, Scientific Investigations Report 2015-5036
The hybrid cyclone-nor’easter known as Hurricane Sandy affected the mid-Atlantic and northeastern United States during October 28-30, 2012, causing extensive coastal flooding. Prior to storm landfall, the U.S. Geological Survey (USGS) deployed a temporary monitoring network from Virginia to Maine to record the storm tide and coastal flooding generated by...
Water resources during drought conditions and postfire water quality in the upper Rio Hondo Basin, Lincoln County, New Mexico, 2010-13
Lauren R. Sherson, Steven E. Rice
2015, Scientific Investigations Report 2015-5086
Stakeholders and water-resource managers in Lincoln County, New Mexico, have had long-standing concerns over the impact of population growth and groundwater withdrawals. These concerns have been exacerbated in recent years by extreme drought conditions and two major wildfires in the upper Rio Hondo Basin, located in south-central New Mexico. The...
Simulation of groundwater flow and chloride transport in the “1,200-foot” sand with scenarios to mitigate saltwater migration in the “2,000-foot” sand in the Baton Rouge area, Louisiana
Charles E. Heywood, John K. Lovelace, Jason M. Griffith
2015, Scientific Investigations Report 2015-5083
Groundwater withdrawals have caused saltwater to encroach into freshwater-bearing aquifers beneath Baton Rouge, Louisiana. The 10 aquifers beneath the Baton Rouge area, which includes East and West Baton Rouge Parishes, Pointe Coupee Parish, and East and West Feliciana Parishes, provided about 184.3 million gallons per day (Mgal/d) for public supply...
Geospatial compilation of results from field sample collection in support of mineral resource investigations, Western Alaska Range, Alaska, July 2013
Michaela R. Johnson, Garth E. Graham, Bernard E. Hubbard, William Benzel
2015, Data Series 943
This Data Series summarizes results from July 2013 sampling in the western Alaska Range near Mount Estelle, Alaska. The fieldwork combined in situ and camp-based spectral measurements of talus/soil and rock samples. Five rock and 48 soil samples were submitted for quantitative geochemi­cal analysis (for 55 major and trace elements),...
A long-term earthquake rate model for the central and eastern United States from smoothed seismicity
Morgan P. Moschetti
2015, Bulletin of the Seismological Society of America (6) 2928-2941
I present a long-term earthquake rate model for the central and eastern United States from adaptive smoothed seismicity. By employing pseudoprospective likelihood testing (L-test), I examined the effects of fixed and adaptive smoothing methods and the effects of catalog duration and composition on the ability of the models to forecast...
The hydrogeology of urbanization: The lost springs of Washington, D.C., late Tertiary and Quaternary sediments of D.C., and the Baltimore Long Term Ecological Research site (LTER): Chapter
Aditi Bhaskar, Milan J. Pavich, John M. Sharp
2015, Book chapter, Tripping from the Fall Line: Field Excursions for the GSA Annual Meeting, Baltimore, 2015
Urbanization is a major process now shaping the environment. This field trip looks at the hydrogeology of the general Washington, D.C., area and focuses on the city's lost springs. Until 150 years ago, springs and shallow dug wells were the main source of drinking water for residents of Washington, D.C....
Adaptive harvest management: Adjustments for SEIS 2013
Scott Boomer, Fred A. Johnson, Guthrie S. Zimmerman
2015, Report
This report provides a summary of revised methods and assessment results based on updated adaptive harvest management (AHM) protocols developed in response to the preferred alternative specified in the Final Supplemental Environmental Impact Statement on the Issuance of Annual Regulations Permitting the Hunting of Migratory Birds (SEIS; U.S. Department of...
The geology of Burnsville Cove, Bath and Highland Counties, Virginia
Christopher S. Swezey, John T. Haynes, Richard A. Lambert, William B. White, Philip C. Lucas, Christopher P. Garrity
2015, Book chapter, The Caves of Burnsville Cove, Virginia
Burnsville Cove is a karst region in Bath and Highland Counties of Virginia. A new geologic map of the area reveals various units of limestone, sandstone, and siliciclastic mudstone (shale) of Silurian through Devonian age, as well as structural features such as northeast-trending anticlines and synclines, minor thrust faults, and...
Water levels of the Ozark aquifer in northern Arkansas, 2013
Tony P. Schrader
2015, Scientific Investigations Report 2015-5088
The Ozark aquifer is the largest aquifer, both in area of outcrop and thickness, and the most important source of freshwater in the Ozark Plateaus physiographic province, supplying water to northern Arkansas, southeastern Kansas, southern Missouri, and northeastern Oklahoma. The study area includes 16 Arkansas counties lying completely or partially...
Genetic characterization of hybridization between native and invasive bittersweet vines (Celastrus spp.)
David N. Zaya, Stacey A. Leicht-Young, Noel B. Pavlovic, Kevin A. Feldheim, Mary V. Ashley
2015, Biological Invasions (17) 2975-2988
Hybridization associated with species introductions can accelerate the decline of native species. The main objective of this study was to determine if the decline of a North American liana (American bittersweet, Celastrus scandens) in the eastern portion of its range is related to hybridization with an introduced congener (oriental bittersweet,...
Installation of a groundwater monitoring-well network on the east side of the Uncompahgre River in the Lower Gunnison River Basin, Colorado, 2012
Judith C. Thomas, L. R. Arnold
2015, Data Series 923
The east side of the Uncompahgre River Basin has been a known contributor of dissolved selenium to recipient streams. Discharge of groundwater containing dissolved selenium contributes to surface-water selenium concentrations and loads; however, the groundwater system on the east side of the Uncompahgre River Basin is not well characterized. The...
Alteration, slope-classified alteration, and potential lahar inundation maps of volcanoes for the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) Volcano Archive
John C. Mars, Bernard E. Hubbard, David Pieri, Justin Linick
2015, Scientific Investigations Report 2015-5035
This study identifies areas prone to lahars from hydrothermally altered volcanic edifices on a global scale, using visible and near infrared (VNIR) and short wavelength infrared (SWIR) reflectance data from the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and digital elevation data from the ASTER Global Digital Elevation Model...
Primative components, crustal assimilation, and magmatic degassing of the 2008 Kilauea summit eruption
Michael C. Rowe, Carl R. Thornber, Tim R. Orr
2015, Book chapter, Hawaiian volcanoes, from source to surface
Simultaneous summit and rift zone eruptions at Kīlauea starting in 2008 reflect a shallow eruptive plumbing system inundated by a bourgeoning supply of new magma from depth. Olivine-hosted melt inclusions, host glass, and bulk lava compositions of magma erupted at both the summit and east rift zone demonstrate chemical continuity...
Shear Wave Velocity and Site Amplification Factors for 25 Strong-Motion Instrument Stations Affected by the M5.8 Mineral, Virginia, Earthquake of August 23, 2011
Robert E. Kayen, Brad A. Carkin, Skye C. Corbett, Aliza Zangwill, Ivan Estevez, Lena Lai
2015, Open-File Report 2015-1099
Vertical one-dimensional shear wave velocity (Vs) profiles are presented for 25 strong-motion instrument sites along the Mid-Atlantic eastern seaboard, Piedmont region, and Appalachian region, which surround the epicenter of the M5.8 Mineral, Virginia, Earthquake of August 23, 2011. Testing was performed at sites in Pennsylvania, Maryland, West Virginia, Virginia, the...
Tsunami recurrence in the eastern Alaska-Aleutian arc: A Holocene stratigraphic record from Chirikof Island, Alaska
Alan R. Nelson, Richard W. Briggs, Tina Dura, Simon E. Engelhart, Guy Gelfenbaum, Lee-Ann Bradley, S.L. Forman, Christopher H. Vane, K.A. Kelley
2015, Geosphere (11) 1203
Despite the role of the Alaska-Aleutian megathrust as the source of some of the largest earthquakes and tsunamis, the history of its pre–twentieth century tsunamis is largely unknown west of the rupture zone of the great (magnitude, M 9.2) 1964 earthquake. Stratigraphy in core transects at two boggy lowland sites...
Methods used to parameterize the spatially-explicit components of a state-and-transition simulation model
Rachel Sleeter, William Acevedo, Christopher E. Soulard, Benjamin M. Sleeter
2015, AIMS Environmental Science (2) 668-693
Spatially-explicit state-and-transition simulation models of land use and land cover (LULC) increase our ability to assess regional landscape characteristics and associated carbon dynamics across multiple scenarios. By characterizing appropriate spatial attributes such as forest age and land-use distribution, a state-and-transition model can more effectively simulate the pattern and spread of...
The distribution of selected elements and minerals in soil of the conterminous United States
Laurel G. Woodruff, William F. Cannon, David B. Smith, Federico Solano
2015, Journal of Geochemical Exploration (154) 49-60
In 2007, the U.S. Geological Survey initiated a low-density (1 site per 1600 km2, 4857 sites) geochemical and mineralogical survey of soil of the conterminous United States as part of the North American Soil Geochemical Landscapes Project. Three soil samples were collected, if possible, from each site; (1) a sample from...
Hydraulic fracturing water use variability in the United States and potential environmental implications
Tanya J. Gallegos, Brian A. Varela, Seth S. Haines, Mark A. Engle
2015, Water Resources Research (51) 5839-5845
Until now, up-to-date, comprehensive, spatial, national-scale data on hydraulic fracturing water volumes have been lacking. Water volumes used (injected) to hydraulically fracture over 263,859 oil and gas wells drilled between 2000 and 2014 were compiled and used to create the first U.S. map of hydraulic fracturing water use. Although median...
Early Holocene Great Salt Lake
Charles G. Oviatt, David B. Madsen, David M. Miller, Robert S. Thompson, John P. McGeehin
2015, Quaternary Research (84) 57-68
Shorelines and surficial deposits (including buried forest-floor mats and organic-rich wetland sediments) show that Great Salt Lake did not rise higher than modern lake levels during the earliest Holocene (11.5–10.2 cal ka BP; 10–9 14C ka BP). During that period, finely laminated, organic-rich muds (sapropel) containing brine-shrimp cysts and...