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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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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

Length-weight relationships of native and non-native fishes in the lower Red River catchment, USA Length-weight relationships of native and non-native fishes in the lower Red River catchment, USA

Length-weight relationships are useful for stock assessments and modeling alternative conservation and management strategies for both native and non-native fishes. We developed length-weight relationships for 18 native and non-native riverine fishes in the lower Red River catchment. Fishes were sampled in the summer and autumn seasons between May 2021 and March 2024 via electrofishing...
Authors
Mariaguadalupe Vilchez, John Dattilo, Shannon K. Brewer
By
Cooperative Research Units

Framework for mapping liquefaction hazard–Targeted design ground motions Framework for mapping liquefaction hazard–Targeted design ground motions

Liquefaction-induced ground failure poses substantial challenges to geotechnical earthquake engineering design. Current approaches for designing against liquefaction hazards, as specified in most seismic provisions, focus on estimating a liquefaction factor of safety (𝐹⁢𝑆𝐿) and typically characterize earthquake loading using design parameters based on probabilistic or deterministic...
Authors
Andrew James Makdisi, Steven L. Kramer
By
Geologic Hazards Science Center
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