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Browse more than 160,000 publications authored by our scientists over the past 100+ year history of the USGS.  Publications available are: USGS-authored journal articles, series reports, book chapters, other government publications, and more.

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Estimating groundwater level records using MOVE.1 and computing monthly percentiles from estimated groundwater records in Massachusetts Estimating groundwater level records using MOVE.1 and computing monthly percentiles from estimated groundwater records in Massachusetts

The U.S. Geological Survey, in cooperation with the Massachusetts Department of Environmental Protection, performed record extensions on groundwater levels at select wells using the Maintenance of Variance Extension type 1 (MOVE.1) method. The groundwater levels estimated from these record extensions were used to compute monthly percentiles to improve future determinations of a...
Authors
Elizabeth A. Ahearn, Dee-Ann E. Crozier
By
Water Resources Mission Area, New England Water Science Center

Rare Earth Elements in coal fly ash and their potential recovery Rare Earth Elements in coal fly ash and their potential recovery

Coal fly ash is a potential resource of valuable elements, such as rare earth elements (REEs), which are retained and concentrated upon combustion. Understanding REE occurrence within fly ash is vital to developing recovery methods. Some of the highest REE contents occur in fly ash derived from U.S. Appalachian Basin coals, and coals influenced by input volcanic ash are especially...
Authors
James C. Hower, Allan Kolker, Heileen Hsu-Kim, Desiree Platta
By
Energy Resources Program, Geology, Energy & Minerals Science Center

An evaluation of fin ray microchemistry to describe movement of White Sturgeon in the Kootenai River basin: Insights and limitations An evaluation of fin ray microchemistry to describe movement of White Sturgeon in the Kootenai River basin: Insights and limitations

Introduction: White Sturgeon Acipenser transmontanus in the Kootenai River basin is listed as endangered in the United States and Canada. Declines have been mainly attributed to poor recruitment exacerbated by the environmental effects of Libby Dam in Montana. Reduced primary production downstream of Libby Dam has been identified as one factor limiting growth of White Sturgeon, thereby...
Authors
Courtnie L. Ghere, Michael C. Quist, Ryan S. Hardy, Malte Willmes, Levi Lewis, Sean Wilson, Troy Smith
By
Cooperative Research Units

Extending the Boore and Abrahamson (2023) modified square-root-impedance method for the development of site amplifications consistent with the full-resonance approach to a range of VS30 values Extending the Boore and Abrahamson (2023) modified square-root-impedance method for the development of site amplifications consistent with the full-resonance approach to a range of VS30 values

The square-root-impedance (SRI) method is commonly used to approximate the seismic site amplifications computed using the full-resonance (FR) method for gradient shear-wave velocity (VS) profiles that are smoothly varying with depth. The SRI site amplifications have been observed to systematically underpredict the FR site amplifications by a ratio of FR/SRI amplifications around 1.05 to...
Authors
Linda Al Atik, David Boore
By
Natural Hazards Mission Area, Earthquake Hazards Program, Earthquake Science Center

Evaluation of the lithium resource in the Smackover Formation brines of southern Arkansas using machine learning Evaluation of the lithium resource in the Smackover Formation brines of southern Arkansas using machine learning

Global demand for lithium, the primary component of lithium-ion batteries, greatly exceeds known supplies, and this imbalance is expected to increase as the world transitions away from fossil fuel energy sources. High concentrations of lithium in brines have been observed in the Smackover Formation in southern Arkansas (>400 milligrams per liter). We used published and newly collected...
Authors
Katherine J. Knierim, Madalyn S. Blondes, Andrew Laurence Masterson, Philip A. Freeman, Bonnie McDevitt, Amanda Sha Herzberg, Peng Li, Ciara Mills, Colin A. Doolan, Aaron M. Jubb, Scott Ausbrooks, Jessica Chenault
By
Geology, Energy & Minerals Science Center, Lower Mississippi-Gulf Water Science Center

Sprinting performance and behavior of adult shortnose sturgeon (Acipenser brevirostrum) Sprinting performance and behavior of adult shortnose sturgeon (Acipenser brevirostrum)

Swimming ability and performance are central to the ecology of aquatic species and to the design of structures intended to promote access to habitat. This is particularly important for migratory species traveling over significant distances. Here, we present results of a study of swimming behaviors of adult shortnose sturgeon (Acipenser brevirostrum). Sturgeon were presented with velocity
Authors
Theodore Castro-Santos, Micah Kieffer, Elsa Goerig
By
Eastern Ecological Science Center
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