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Publications

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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Filter Total Items: 175505

Validation of the U37K' paleotemperature proxy in the South Brazilian Bight from core-top sediments Validation of the U37K' paleotemperature proxy in the South Brazilian Bight from core-top sediments

The paleothermometer based on the alkenone unsaturation index (U37K′) is often used to reconstruct past sea surface temperatures (SST). In the SW Atlantic Ocean, however, a limited understanding of the seasonal and depth distribution of coccolithophores, which generates the U37K′ signal preserved in ocean sediments, hinders accurate estimates of past regional SSTs. We analyzed 45 core...
Authors
Felipe Stanchak, Julie N. Richey, Amanda Gerotto, Amelia Shevenell, Marcia C. Bicego, Felipe A. Toledo, Michel M. de Mahiques, Renata H. Nagai
By
St. Petersburg Coastal and Marine Science Center

Phenology in higher education Phenology in higher education

Phenological data collection and analysis are well-suited to higher education settings, providing valuable opportunities for hands-on data collection, manipulation, and interpretation. Few subjects are more conducive or accessible for engaging diverse learners in meaningful and impactful science at such large scales and minimal cost. In this chapter, we provide a range of examples of how
Authors
Theresa Crimmins, Brittany S. Barker, Darby D. Bergl, Samantha Brewer, Kirsten de Beurs, Sarah Jones, Tammy Long, Emily Mohl, Emma Oschrin, Andrew D. Richardson, Tiffany A. Schriever, Jessica J. Walker, Tanisha M. Williams
By
Western Geographic Science Center

Widespread occurrence of former anhydrite phenocrysts in Laramide-age magmas related to porphyry-skarn Cu mineralization at Santa Rita and Hanover-Fierro, New Mexico, USA Widespread occurrence of former anhydrite phenocrysts in Laramide-age magmas related to porphyry-skarn Cu mineralization at Santa Rita and Hanover-Fierro, New Mexico, USA

Reports of magmatic anhydrite are relatively rare, with only ~30 occurrences documented worldwide so far. However, magmatic anhydrite saturation is difficult to recognize because anhydrite decomposes rapidly in near-surface environments. In most cases, only anhydrite inclusions shielded within other phenocryst phases were able to survive. Alternatively, since anhydrite phenocrysts...
Authors
Andreas Audétat, Jia Chang, Sean Patrick Gaynor
By
Mineral Resources Program, Geology, Geophysics, and Geochemistry Science Center

Site-level connectivity identified from multiple sources of movement data to inform conservation of a migratory bird Site-level connectivity identified from multiple sources of movement data to inform conservation of a migratory bird

Migratory birds depend on a suite of sites across their annual cycles, making them vulnerable to a wide variety of anthropogenic pressures. Current area-based conservation measures have been found inadequate to safeguard migratory birds, in part due to a lack of consideration for the connectivity between sites mediated by the movements of individuals.To address this issue, we develop a...
Authors
M. Beal, J. Nightingale, J.R. Belo, C. Batey, H. Belting, P. Bocher, M. Burgess, T.B. Craft, N. Crockford, P. Delaporte, L. Donaldson, G. Gelinaud, J.A. Gill, T.G. Gunnarsson, B. J. Morrison, J.S. Gutierrez, J. Hooijmeijer, R.A. Howison, P. Hunke, L. Jomat, H. Lemke, J. P. Ludwig, F.A. Majoor, C. Marlow, J.A. Masero, J. Melter, I. Nicholson, M. Parejo, B. O'Mahony, E. Pasanen, J. Pessa, T. Piersma, A.D. Rocha, F. Robin, M. Roodbergen, P. Rousseau, V. Salewski, L. Schmidt, J. Smart, A. Staneva, T. Lee Tibbitts, S. Timonen, J.A. Alves, M.P. Dias
By
Alaska Science Center

Physicochemical properties and bioreactivity of sub-10 µm geogenic particles: Comparison of volcanic ash and desert dust Physicochemical properties and bioreactivity of sub-10 µm geogenic particles: Comparison of volcanic ash and desert dust

Exposure to ambient particulate matter (PM) with an aerodynamic diameter of
Authors
Ines Tomašek, Julia Eychenne, David Damby, Adrian Hornby, Manolis N Romanias, Severine Moune, Gaëlle Uzu, Federica Schiavi, Maeva Dole, Emmanuel Gardes, Mickael Laumonier, Clara Gorce, Regine Minet-Quinard, Julie Durif, Corinne Belville, Ousmane Traore, Loic Blanchon, Vincent Sapin
By
Volcano Hazards Program, Volcano Science Center

Bison population dynamics, harvest, and conflict potential under feedground management alternatives at the National Elk Refuge in Jackson, Wyoming Bison population dynamics, harvest, and conflict potential under feedground management alternatives at the National Elk Refuge in Jackson, Wyoming

Bison bison (bison) were once abundant across North America but declined due to overharvesting in the late 1800s. The reintroduced population in and around Jackson, Wyoming has averaged 485 individuals between 2018–2023 and is the subject of a planning process to inform management strategies that will guide the U.S. Fish and Wildlife’s next “Bison and Elk Management Plan” for the...
Authors
Jonathan D. Cook, Margaret C. McEachran, Gavin G. Cotterill, Eric K Cole
By
Eastern Ecological Science Center
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