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Reports

Browse more than 82,000 reports authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.

Filter Total Items: 85231

Possible behavioural, energetic and demographic effects of displacement of red-throated divers Possible behavioural, energetic and demographic effects of displacement of red-throated divers

This report comprises the main points of discussion and agreement during a workshop, held in Edinburgh in May 2017, to discuss how displacement might affect individuals and the Red-throated diver population; with additional information added by the scientists following the workshop.
Authors
Volker Dierschke, Robert W. Furness, Carrie E. Gray, Ib Krag Petersen, Joel A. Schmutz, Ramunas Zydelis, Francis Daunt

Cobalt—Styles of deposits and the search for primary deposits Cobalt—Styles of deposits and the search for primary deposits

Cobalt (Co) is a potentially critical mineral. The vast majority of cobalt is a byproduct of copper and (or) nickel production. Cobalt is increasingly used in magnets and rechargeable batteries. More than 50 percent of primary cobalt production is from the Central African Copperbelt. The Central African Copperbelt is the only sedimentary rock-hosted stratiform copper district that...
Authors
Murray W. Hitzman, Arthur A. Bookstrom, John F. Slack, Michael L. Zientek

Groundwater flux and nutrient loading in the northeast section of Bear Lake, Muskegon County, Michigan, 2015 Groundwater flux and nutrient loading in the northeast section of Bear Lake, Muskegon County, Michigan, 2015

Bear Lake in North Muskegon, Michigan, is listed as part of the Muskegon Lake area of concern as designated by the U.S. Environmental Protection Agency. This area of concern was designated as a result of eutrophication and beneficial use impairments. On the northeast end of Bear Lake, two man-made retention ponds (Willbrandt Pond East and Willbrandt Pond West), formerly used for celery...
Authors
Alexander R. Totten, Jessica A. Maurer, Joseph W. Duris

Development of the next generation of seismic design value maps for the 2020 NEHRP Provisions Development of the next generation of seismic design value maps for the 2020 NEHRP Provisions

During the period January 2015 through August 2018, a joint committee of U.S. Geological Survey (USGS) representatives and National Institute of Building Sciences Building Seismic Safety Council (BSSC) volunteers and staff formed a committee to conduct Project 17. The purpose of Project 17 was to formulate recommendations for the rules by which next-generation seismic design value maps...
Authors
Ronald Hamburger, David Bonneville, C. B. Crouse, James D. Dolan, Ben Enfield, Julie Furr, Robert Hanson, James A. Harris, John Heintz, William Holmes, Jon Hooper, Charles Kircher, Nico Luco, Steven McCabe, Robert Pekelnicky, Jon Siu, Sanaz Rezaeian, Philipp Schneider, Jonathan P. Stewart, Siamak Sattar, Mai Tong, Jiqiu Yuan

Conceptual model for invasive bivalve control on wetland productivity Conceptual model for invasive bivalve control on wetland productivity

Tidal wetlands were the historically dominant features of many coastal regions around the world, including the San Francisco Estuary (Callaway et al. 2011; Whipple et al. 2012). These mosaics of varied interconnected habitats (Mitsch and Gosselink 1993) provide a host of ecosystem services, including biodiversity maintenance, fish and wildlife habitat, water quality improvement, flood...
Authors
Rosemary Hartman, Larry R. Brown, Janet K. Thompson, Francis Parchaso

Procedure for calculating estimated ultimate recoveries of wells in the Mississippian Barnett Shale, Bend Arch–Fort Worth Basin Province of north-central Texas Procedure for calculating estimated ultimate recoveries of wells in the Mississippian Barnett Shale, Bend Arch–Fort Worth Basin Province of north-central Texas

In 2015, the U.S. Geological Survey published an assessment of technically recoverable continuous oil and gas resources of the Mississippian Barnett Shale in the Bend Arch–Fort Worth Basin Province of north-central Texas. Of the two assessment units involved in the overall assessment, one included a roughly equal number of oil wells and gas wells as classified by the U.S. Geological...
Authors
Heidi M. Leathers-Miller

A seasonal and spatial comparison of metals, and stable carbon and nitrogen isotopes, in Chincoteague Bay and the marsh deposits of Assateague Island and the adjacent vicinity, Maryland and Virginia A seasonal and spatial comparison of metals, and stable carbon and nitrogen isotopes, in Chincoteague Bay and the marsh deposits of Assateague Island and the adjacent vicinity, Maryland and Virginia

After Hurricane Sandy, scientists from the U.S. Geological Survey, St. Petersburg Coastal and Marine Science Center conducted a seasonal collection of estuarine, marsh, and sandy overwash surface sediments from Chincoteague Bay, Tom’s Cove, and the surrounding Assateague Island and Delmarva Peninsula in March–April and October 2014. Surplus surface sediment was analyzed for metals...
Authors
Alisha M. Ellis, Christopher G. Smith

Distribution of foraminifera in Chincoteague Bay and the marshes of Assateague Island and the adjacent vicinity, Maryland and Virginia Distribution of foraminifera in Chincoteague Bay and the marshes of Assateague Island and the adjacent vicinity, Maryland and Virginia

Scientists from the U.S. Geological Survey (USGS), St. Petersburg Coastal and Marine Science Center conducted a seasonal collection of estuarine, marsh, and sandy washover surface sediments from Chincoteague Bay, Tom’s Cove, and the surrounding Assateague Island and Delmarva Peninsula in March–April and October 2014, after Hurricane Sandy. Micropaleontology samples were collected as part...
Authors
Alisha M. Ellis, Jaimie Shaw, Lisa E. Osterman, Christopher G. Smith

Determining fine-scale use and movement patterns of diving bird species in federal waters of the Mid-Atlantic United States using satellite telemetry Determining fine-scale use and movement patterns of diving bird species in federal waters of the Mid-Atlantic United States using satellite telemetry

Offshore wind energy development in the United States is projected to expand in the upcoming decades to meet growing energy demands and reduce fossil fuel emissions. There is particular interest in commercial offshore wind development within Federal waters (i.e., > 3 nautical miles from shore) of the mid-Atlantic. In order to understand the potential for adverse effects on marine birds...
Authors
Caleb Spiegel, Alicia Berlin, Andrew Gilbert, Carrie E. Gray, William Montevecchi, Iain Stenhouse, Scott Ford, Glenn H. Olsen, Jonathan Fiely, Lucas Savoy, M. Wing Goodale, Chantelle Burke

PRISM software—Processing and review interface for strong-motion data PRISM software—Processing and review interface for strong-motion data

Rapidly available and accurate ground-motion acceleration time series (seismic recordings) and derived data products are essential to quickly providing scientific and engineering analysis and advice after an earthquake. To meet this need, the U.S. Geological Survey National Strong Motion Project has developed a software package called PRISM (Processing and Review Interface for Strong...
Authors
Jeanne M. Jones, Erol Kalkan, Christopher D. Stephens, Peter Ng

Integrated wetland management for waterfowl and shorebirds at Mattamuskeet National Wildlife Refuge, North Carolina Integrated wetland management for waterfowl and shorebirds at Mattamuskeet National Wildlife Refuge, North Carolina

Mattamuskeet National Wildlife Refuge (MNWR) offers a mix of open water, marsh, forest, and cropland habitats on 20,307 hectares in coastal North Carolina. In 1934, Federal legislation (Executive Order 6924) established MNWR to benefit wintering waterfowl and other migratory bird species. On an annual basis, the refuge staff decide how to manage 14 impoundments to benefit not only...
Authors
Brian G. Tavernia, John D. Stanton, James E. Lyons

Geology and assessment of undiscovered oil and gas resources of the Lena-Vilyui Basin Province, 2008 Geology and assessment of undiscovered oil and gas resources of the Lena-Vilyui Basin Province, 2008

The U.S. Geological Survey (USGS) recently assessed the potential for undiscovered oil and gas resources of the Lena-Vilyui Basin Province, north of the Arctic Circle, as part of the Circum-Arctic Resource Appraisal program. The province is in the Russian Federation and is situated between the Verkhoyansk fold-and-thrust belt and the Siberian craton. The one assessment unit (AU) defined...
Authors
Timothy R. Klett, Janet K. Pitman
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