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Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 82,000 reports 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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Terrebonne Basin northern Gulf of Mexico, 30 July-28 September 2023 Terrebonne Basin northern Gulf of Mexico, 30 July-28 September 2023
In the summer and fall of 2023, the Gulf of Mexico Deepwater Hydrate Coring Expedition (UT-GOM2-2) drilled, cored, made downhole measurements, and analyzed samples from the seafloor to the base of the gas hydrate stability zone in one location (Site H, WR313) in the Terrebonne basin, deepwater Gulf of Mexico. Analyses of data and samples from the expedition will inform biological...
Authors
Peter B. Flemings, Carla Thomas, Stephen C. Phillips, Timothy Collett, Ann E. Cook, Evan S. Solomon, Frederick S. Colwell, Joel E. Johnson, David Awwiller, Irita Aylward, Athma Bhandari, Donald Brooks, Alejandro Cardona, Michael Casso, Rachel Coyte, Tom Darrah, Marcy Davis, Brandon Dugan, Dan Duncan, John T. Germaine, Melanie Holland, Jesse Houghton, N. Tanner Mills, Michael Mimitz, Daniel Minarich, Yuki Morono, Zachary Murphy, Joshua O’Connell, Ethan Petrou, Tom Pettigrew, John Pohlman, Alexey Portnov, Marcie Purkey Phillips, Thomas Redd, Derek E. Sawyer, Peter Schultheiss, Kelly Shannon, Camille Sullivan, Cathal Small, Kayla Tozier, Man-Yin Tsang, Camila Van Der Maal, William F. Waite, Taylor Walton
U.S. Geological Survey climate science plan—Future research directions U.S. Geological Survey climate science plan—Future research directions
Executive Summary Climate is the primary driver of environmental change and is a key consideration in defining science priorities conducted across all mission areas in the U.S. Geological Survey (USGS). Recognizing the importance of climate change to its future research agenda, the USGS’s Climate Science Steering Committee requested the development of a Climate Science Plan to identify...
Authors
Tamara Wilson, Ryan P. Boyles, Nicole DeCrappeo, Judith Z. Drexler, Kevin D. Kroeger, Rachel A. Loehman, John M. Pearce, Mark P. Waldrop, Peter D. Warwick, Anne M. Wein, Sara L. Zeigler, Beard
By
Ecosystems Mission Area, Water Resources Mission Area, Climate Adaptation Science Centers, Ecosystems Land Change Science Program, Energy Resources Program, Volcano Hazards Program, Alaska Science Center, California Water Science Center, Forest and Rangeland Ecosystem Science Center, Geology, Energy & Minerals Science Center, Volcano Science Center, Western Geographic Science Center, Woods Hole Coastal and Marine Science Center
Chloride concentrations in groundwater from the western part of the Southern Hills regional aquifer system, Louisiana, 2021–22 Chloride concentrations in groundwater from the western part of the Southern Hills regional aquifer system, Louisiana, 2021–22
Groundwater is heavily used for public supply and industrial uses in the Baton Rouge, Louisiana, area. Lowered water levels resulting from groundwater withdrawals have induced the movement of saltwater towards wells in East Baton Rouge and West Baton Rouge Parishes. Saltwater intrusion has the potential to affect water supply infrastructure, reduce water availability for some uses, and...
Authors
M.A. Lindaman
The U.S. Geological Survey Volcano Science Center’s response plan for significant volcanic events The U.S. Geological Survey Volcano Science Center’s response plan for significant volcanic events
This publication describes the U.S. Geological Survey Volcano Science Center (VSC) Response Plan for Significant Volcanic Events (hereinafter referred to as “the plan”) that has been developed for U.S volcano observatories over the past several years in consultation with the lead scientist, or Scientist-in-Charge (SIC), of each of the five U.S. Geological Survey (USGS) volcano...
Authors
Seth C. Moran, Christina A. Neal, Thomas L. Murray
Three-dimensional geologic framework model of the Rio San Jose groundwater basin and adjacent areas, New Mexico Three-dimensional geologic framework model of the Rio San Jose groundwater basin and adjacent areas, New Mexico
As part of a U.S. Geological Survey study in cooperation with the Bureau of Reclamation and the Pueblo of Acoma, New Mexico, and the Pueblo of Laguna, New Mexico, a digital three-dimensional geologic framework model was constructed for the Rio San Jose and its surface-water drainage basin in west-central New Mexico. This three-dimensional model defines the altitude, thickness, and extent...
Authors
Donald S. Sweetkind, Amy E. Galanter
Water-quality monitoring strategy for Mount Hope Bay and the Taunton River Estuary, southeastern Massachusetts Water-quality monitoring strategy for Mount Hope Bay and the Taunton River Estuary, southeastern Massachusetts
The U.S. Geological Survey, in cooperation with the Massachusetts Department of Environmental Protection (MassDEP), began a study in 2018 to develop a water-quality monitoring strategy (WQMS) for Mount Hope Bay and the Taunton River Estuary in southeastern Massachusetts. MassDEP is interested in water-quality data in Mount Hope Bay and the Taunton River Estuary to characterize current...
Authors
David S. Armstrong
New U-Pb geochronology and geochemistry of Paleozoic metaigneous rocks from western Yukon and eastern Alaska, cross-border synthesis, and implications for tectonic models New U-Pb geochronology and geochemistry of Paleozoic metaigneous rocks from western Yukon and eastern Alaska, cross-border synthesis, and implications for tectonic models
The tectonic evolution of and relation between the Yukon-Tanana terrane and the Lake George assemblage, as well as other associated tectonic assemblages in western Yukon and eastern Alaska, have been debated for decades. The Yukon-Tanana terrane is widely considered to be an allochthonous rifted fragment derived from the Laurentian continental margin, whereas the Lake George assemblage...
Authors
Cynthia Dusel-Bacon, James K. Mortensen
Predicting the persistence of salamanders: consequences of phenological shifts for species of management concern on DoD lands Predicting the persistence of salamanders: consequences of phenological shifts for species of management concern on DoD lands
As climate change effects intensify, key life history events may become decoupled from necessary biotic and abiotic resources. For species of management concern on Department of Defense (DoD) lands, these shifts in phenology may prove difficult to address without a mechanistic understanding of the drivers of such changes. We sought to determine the causes and effects of phenological...
Authors
Susan Walls, Thomas L. Anderson, Houston C. Chandler, Carola A. Haas, Jon M. Davenport
2023-2024 Coastal sage scrub and chaparral community monitoring for western San Diego County 2023-2024 Coastal sage scrub and chaparral community monitoring for western San Diego County
Western San Diego County is dominated by shrublands supporting biologically diverse native plant and animal communities. Widespread urbanization has led to regional habitat loss and fragmentation, and many species in these shrubland communities are rare, threatened, or endangered. Large-scale, multiple-species conservation planning has resulted in a regional preserve system that focuses...
Authors
Emily E. Perkins, Philip Robert Gould, Jennifer Kingston, Christopher W. Brown, Kristine L. Preston, Robert N. Fisher
Modelling effects of flow withdrawal scenarios on riverine and riparian features of the Yampa River in Dinosaur National Monument Modelling effects of flow withdrawal scenarios on riverine and riparian features of the Yampa River in Dinosaur National Monument
The National Park Service (NPS) is charged with maintaining natural riverine resources and processes in its parks along the Yampa River and downstream along the Green River. This mission requires information on how proposed water withdrawals would affect resources. We present a methodology that quantifies the impact on natural riverine and riparian features of Dinosaur National Monument...
Authors
Rebecca Diehl, Jonathan M. Friedman
6PPD & 6PPD-quinone 6PPD & 6PPD-quinone
No abstract available.
Authors
Kelly Grant, Tanya Williams, Steven Brauner, Jose Zambrana, Christine Nancarrow, Michael Garland, Dana McCue, Rhea Smith, Rachael F. Lane, Madison Rose Bristol, Sigrida Reinis
Learning from a high-severity fire event—Conditions following the 2018 Carr Fire at Whiskeytown National Recreation Area Learning from a high-severity fire event—Conditions following the 2018 Carr Fire at Whiskeytown National Recreation Area
The 2018 Carr Fire burned more than 90 percent of Whiskeytown National Recreation Area, with much of the park burning at high severity. California yellow pine and mixed conifer forests are not well adapted to large, high-severity fires, and forest recovery after these events may be problematic. Large, high-severity fire patches pose difficulties for recruitment with interiors that are...
Authors
Phillip J. van Mantgem, Micah C. Wright, Karen M. Thorne, Jill Beckmann, Kevin J. Buffington, Lyndsay L. Rankin, Audrey Colley, Eamon A. Engber