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Browse more than 65,000 articles authored by our scientists over the past 100+ year history of the USGS and refine search by topic, location, year, and advanced search.

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Bridging ecology and geosciences in riverscapes: Implications for process-based restoration Bridging ecology and geosciences in riverscapes: Implications for process-based restoration

There has been a growing interest in integrating geological and ecological processes for sustainable river management and restoration. Lotic systems are shaped by diverse physical processes, including geology, geomorphology, hydrology, and interactions with terrestrial processes. However, restoration practices often prioritize specific habitats or river forms without fully considering...
Authors
Hiromi Uno, Hikaru Nakagawa, Nobuo Ishiyama, Masaru Sakai, Terutaka Mori, Akira Terui, Eric Arthur Scholl, Ellen E. Wohl, Colden V. Baxter

Assessment of the fish tumors or other deformities beneficial use impairment and associated risks at two Lake Michigan Areas of Concern Assessment of the fish tumors or other deformities beneficial use impairment and associated risks at two Lake Michigan Areas of Concern

The U.S. Great Lakes Areas of Concern (AOCs) have been designated due to significant environmental degradation, with multiple Beneficial Use Impairments (BUIs) requiring remediation before delisting. The “fish tumors or other deformities” BUI remains at the Sheboygan River and the Lower Green Bay and Fox River AOCs, necessitating evaluation in white sucker (Catostomus commersonii), a...
Authors
Vicki S. Blazer, Cheyenne Rose Smith, Heather L. Walsh, P.M. Mazik, M.R. Magee

Rapid characterization of the 2025 Mw 8.8 Kamchatka, Russia earthquake Rapid characterization of the 2025 Mw 8.8 Kamchatka, Russia earthquake

The 29 July 2025 Mw 8.8 Kamchatka, Russia, earthquake was the sixth largest instrumentally recorded earthquake. This event was seismically well observed at regional and teleseismic distances, but publicly available near‐source data were sparse at the time of the event, presenting unique challenges for rapid source and impact characterization. The U.S. Geological Survey (USGS) National...
Authors
Harriet Zoe Yin, Kate E. Allstadt, William D Barnhart, Samantha Ann Clapp, Paul S. Earle, Dara Elyse Goldberg, Alex R. Grant, Matt Herman, Kishor S. Jaiswal, Sara K. McBride, Adam T. Ringler, Max Schneider, Eric M. Thompson, Nicholas van der Elst, David Wald, Dun Wang, Charles Worden, William L. Yeck

Subsurface structure across the Tacoma Basin, Washington State, using trans-dimensional Bayesian inversion of fundamental mode spatial autocorrelation data Subsurface structure across the Tacoma Basin, Washington State, using trans-dimensional Bayesian inversion of fundamental mode spatial autocorrelation data

Spatial autocorrelation (SPAC), the azimuthal average of the normalized cross-correlation between equidistant station pairs deployed in a 2-D array, is widely used to image the subsurface structure. However, the rigorous estimate of subsurface structure and its uncertainties as a function of depth using SPAC data is challenging due to the nonlinear relation between the SPAC data and...
Authors
Surya Pachhai, Kristine L. Pankow, William J. Stephenson

Helping California get ready for when the mud hits the fan Helping California get ready for when the mud hits the fan

With frequent wildfires, powerful rainstorms, steep terrain, and dense population, California is particularly vulnerable to postfire hazards like flooding and debris flow. Major postfire flooding and debris-flow events can be more costly than the fire itself, causing dozens of fatalities and widespread damage (Chawner, 1934; Lancaster et al., 2021). Smaller events occur nearly every year...
Authors
Jason W. Kean, Jaime Kostelnik

The 2025 “Hacking Limnology” Workshop Series and DSOS Virtual Summit: A half decade of data-intensive aquatic science The 2025 “Hacking Limnology” Workshop Series and DSOS Virtual Summit: A half decade of data-intensive aquatic science

No abstract available.
Authors
Michael Frederick Meyer, Jorrit Mesman, Carolina C. Barbosa, Jonathan J Borelli, Johannes Feldbauer, Merritt Elizabeth Harlan, Robert T. Hensley, Burak Kuyumcu, Robert Ladwig, Isabella Oleksy, Rachel M. Pilla, Jacob Aaron Zwart, Matthew Biddle, Paul J. Kinzel, Carl J. Legleiter, Tadhg Moore, Tylar Murray, Lipa Nkwalale, Brandon Overstreet, Mehraz Rumman, Whitney M. Woelmer

Characterization and modeling approach for planning restoration strategies in a complex basin affected by acid mine drainage Characterization and modeling approach for planning restoration strategies in a complex basin affected by acid mine drainage

The management of acid mine drainage (AMD) impacted catchments, such as the Odiel River basin, in southwestern Spain, prioritizes reclamation to meet water resources needs. Assessing water composition across its watercourses is needed to identify major AMD contributors and potentially guide remediation efforts. An equilibrium-based mixing model was developed to simulate AMD pollutant...
Authors
Jonatan Romero-Matos, Laura Sánchez-López, Rafael León, Robert L. Runkel, D. Kirk Nordstrom, Carlos R. Cánovas, Francisco Macías, José Miguel Nieto

Challenges and opportunities for Sendai framework disaster loss reporting in the United States Challenges and opportunities for Sendai framework disaster loss reporting in the United States

The Sendai Framework for Disaster Risk Reduction provides quantitative indicators for nations to measure progress in the reduction of disaster losses. The collection and analysis of disaster loss data under the Sendai Framework improves our understanding of the effectiveness of national disaster risk reduction strategies and interventions. The Sendai Framework has enhanced cooperation...
Authors
Aleeza Wilkins, Alice Pennaz, Monica Dix, Adam Smith, Daniel Karlson, Sezin Tokar, Emily Brooks

Integrating Sr isotopes, microchemistry, and genetics to reconstruct Salmonidae species and life history Integrating Sr isotopes, microchemistry, and genetics to reconstruct Salmonidae species and life history

Recent approaches to fisheries research emphasize the importance of the coproduction of knowledge in building resilient and culturally mindful fisheries management frameworks. Despite widespread recognition of the need for Indigenous knowledge and historical reference points as baseline data, archaeological data are rarely included in conservation biology research designs. Here we...
Authors
Ross Anthony Salerno, Remi Murdoch, Taylor Wilcox, Joanna Elmore, Jens Hegg, Catherine S Austin, Michael LeMoine, Jade Luckhurst, Alexandra Fraik, Molly Carney

Rhyolitic and basaltic reference materials for TC/EA analysis: Investigation of water extraction and D/H ratios Rhyolitic and basaltic reference materials for TC/EA analysis: Investigation of water extraction and D/H ratios

Increasingly, water and D/H ratios of silicic and basaltic glasses are used to investigate magmatic degassing and secondary hydration, as well as for study these parameters in the mantle and crustal magmas. The advent of the High Temperature Conversion Element Analyzer (TC/EA) continuous flow mass spectrometry made the determination of hydrogen isotopes relatively quick and precise (±0...
Authors
I.N Bindeman, M.R Hudak, J.P Palandri, Haiping Qi, R Milovsky, R.L Hervig, M.R Perfit

Upper Triassic igneous rocks of the southern Kenai Peninsula, Alaska – Prelude to Early Jurassic subduction along the western Wrangellia composite terrane margin Upper Triassic igneous rocks of the southern Kenai Peninsula, Alaska – Prelude to Early Jurassic subduction along the western Wrangellia composite terrane margin

New U–Pb zircon geochronology identifies a latest Triassic (ca 214–201 Ma) igneous suite of tuff, hypabyssal dikes, and a pluton on the southern Kenai Peninsula, Alaska. The igneous suite was emplaced within Upper Triassic sedimentary rocks along the southern margin of Western Wrangellia, the western-most fragment of the Wrangellia composite terrane. The igneous rocks range from mafic...
Authors
Travis L. Hudson, Frederic H. Wilson, Paul O’Sullivan

Home ranges of economically important reef fishes at North Carolina artificial reefs Home ranges of economically important reef fishes at North Carolina artificial reefs

Home range is a vital component to understanding animal ecology and can vary with factors like species, body size, and habitat. Artificial reefs are increasingly used to supplement or enhance habitat for reef fish. Quantifying reef fish home range sizes and the factors affecting home ranges is thus critical to understanding the efficacy of artificial reefs to sustain communities that...
Authors
Ryan M. Tharp, Nathan J. Hostetter, Jeffrey A. Buckel
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