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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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Filter Total Items: 175939

Testing tree-ring cellulose δ18O with water isotopes for Holocene lake δ18O interpretations in the central Rocky Mountains USA Testing tree-ring cellulose δ18O with water isotopes for Holocene lake δ18O interpretations in the central Rocky Mountains USA

Stable isotopes of water preserved in geologic archives, primarily as oxygen (δ18O), have proven critical for documenting Earth’s climatic and hydrologic systems past and present. However, timescale differences of water isotope inputs to proxy systems and the signal embedded in long paleorecords often confound translation to observed hydroclimatic metrics. Here, a unique 20-year dataset...
Authors
Lesleigh Anderson, M. Alisa Mast, Rebecca Lynn Brice, Max Berkelhammer
By
Geosciences and Environmental Change Science Center, Dendrochronology Lab

In situ allelopathic expression by the invasive amphibious plant, Ludwigia hexapetala (water primrose) across habitat types, seasons, and salinities In situ allelopathic expression by the invasive amphibious plant, Ludwigia hexapetala (water primrose) across habitat types, seasons, and salinities

Broad infestations of invasive, non-native vegetation have transformed wetlands around the world. Ludwigia hexapetala is a widespread, amphibious invasive plant with a creeping growth habit in open water and an erect growth habit in terrestrial habitats. In the upper San Francisco Estuary of California, L. hexapetala is increasingly terrestrializing into marshes and this expansion may be
Authors
Judith Z. Drexler, Michael Gross, Michelle L. Hladik, Bailey Morrison, Erin Hestir
By
Water Resources Mission Area, California Water Science Center

Global assessment of aquatic Isoëtes species ecology Global assessment of aquatic Isoëtes species ecology

Isoëtes are iconic but understudied wetland plants, despite having suffered severe losses globally mainly because of alterations in their habitats. We therefore provide the first global ecological assessment of aquatic Isoëtes to identify their environmental requirements and to evaluate if taxonomically related species differ in their ecology.The assessment resulted in an extensive new...
Authors
Mattia M. Azzella, Alice Dalla Vecchia, Thomas Abeli, Janne Alahuhta, Victor B. Amoroso, Enric Ballesteros, Vincent Bertrin, Daniel Brunton, Alexander A. Bobrov, Cecilio Caldeira, Simona Ceschin, Elena V. Chemeris, Martina Ctvrtlikova, Mary de Winton, Esperanca Gacia, Oleg G. Grishutkin, Deborah Hofstra, Daniella Ivanova, Maria O. Ivanova, Nikita K. Konotop, Danelle M. Larson, Sara Magrini, Marit Mjelde, Olga A. Mochalova, Guilherme Oliveira, Ole Pedersen, Jovani B. de S. Pereira, Cristina Ribaudo, Maria Inmaculada Romero Bujan, Angelo Troia, Yulia S. Vinogradova, Polina A. Volkova, Daniel Zandonadi, Nadezhda V. Zueva, Rossano Bolpagni
By
Ecosystems Mission Area, Upper Midwest Environmental Sciences Center

Report of the River Master of the Delaware River for the period December 1, 2016–November 30, 2017 Report of the River Master of the Delaware River for the period December 1, 2016–November 30, 2017

Executive Summary A Decree of the Supreme Court of the United States, entered June 7, 1954 (New Jersey v. New York, 347 U.S. 995), established the position of Delaware River Master within the U.S. Geological Survey. In addition, the Decree authorizes the diversion of water from the Delaware River Basin and requires compensating releases from certain reservoirs owned by New York City be...
Authors
Kendra L. Russell, William J. Andrews, Vincent J. DiFrenna, J. Michael Norris, Robert R. Mason,
By
Water Resources Mission Area

Status and performance of the ShakeAlert® earthquake early warning system: 2019-2023 Status and performance of the ShakeAlert® earthquake early warning system: 2019-2023

The U.S. Geological Survey (USGS)‐operated ShakeAlert® system is the United States West Coast earthquake early warning system (Given et al., 2018). In this study we detail ShakeAlert’s performance during some of the largest events seen by the system thus far. Statewide public alerting using ShakeAlert messages was authorized in California in October 2019. Over the next few years, public...
Authors
A.I. Lux, Deborah Smith, M. Böse, Jeffrey J. McGuire, Jessie K. Saunders, Minh Huynh, I. Stubailo, Jennifer R Andrews, G. Lotto, B. Crowell, S. Crane, R. M. Allen, Douglas D. Given, R. Hartog, T. Heaton, A. Husker, J. Marty, Leland O'Driscoll, Harold J. Tobin, Sara K. McBride, D. Toomey
By
Natural Hazards Mission Area, Earthquake Hazards Program, Earthquake Science Center

Automated, near real-time ground-motion processing at the U.S. Geological Survey Automated, near real-time ground-motion processing at the U.S. Geological Survey

We describe automated ground‐motion processing software named gmprocess that has been developed at the U.S. Geological Survey (USGS) in support of near‐real‐time earthquake hazard products. Because of the open‐source development process, this software has benefitted from the involvement and contributions of a broad community and has been used for a wider range of applications than was...
Authors
Eric M. Thompson, Mike Hearne, Brad T. Aagaard, J.M. Rekoske, Charles Worden, Morgan P. Moschetti, Heather Elizabeth Hunsinger, Gabe C. Ferragut, Grace Alexandra Parker, James Andrew Smith, Kyle Ken Smith, Albert R. Kottke
By
Geologic Hazards Science Center
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