Skip to main content
U.S. flag

An official website of the United States government

Dot gov

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Https

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Search Results

46644 results.

Alternate formats: RIS file of the first 3000 search results  |  Download all results as CSV | TSV | Excel  |  RSS feed based on this search  |  JSON version of this page of results

Page 132, results 3276 - 3300

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
North American Bat Monitoring Program (NABat) mobile acoustic transect surveys standard operating procedure 3—Conducting mobile transect surveys
Jaclyn Martin, MacKenzie Hall, Emily Ferrall, Han Li, Jason Rae, Bethany R. Straw, Brian E. Reichert
2022, Techniques and Methods 2-C3
This standard operating procedure (SOP) provides instructions and considerations for conducting mobile acoustic surveys along road transects to collect bat acoustic data following the North American Bat Monitoring Program (NABat) protocol and sample design. This report discusses measures for ensuring the safety of surveyors and efficiency of mobile transect surveys....
North American Bat Monitoring Program (NABat) mobile acoustic transect surveys standard operating procedure 1—Locating and establishing mobile transect routes
Jaclyn Martin, Dane Smith, Han Li, MacKenzie Hall, Emily Ferrall, Jason Rae, Bethany R. Straw, Brian E. Reichert
2022, Techniques and Methods 2-C1
This document is the first of three standard operating procedures (SOPs) providing instructions and considerations for conducting mobile acoustic surveys along road transects to collect bat acoustic data following the North American Bat Monitoring Program (NABat) protocol and sample design. This SOP focuses specifically on selecting NABat grid cells and...
Optimizing satellite resources for the global assessment and mitigation of volcanic hazards—Suggestions from the USGS Powell Center Volcano Remote Sensing Working Group
M. E. Pritchard, Michael Poland, K. Reath, B. Andrews, M. Bagnardi, J. Biggs, S. Carn, D. Coppola, S.K. Ebmeier, M.A. Furtney, T. Girona, J. Griswold, T. Lopez, P. Lundgren, S. Ogburn, M. Pavolonis, E. Rumpf, G. Vaughan, C. Wauthier, R. Wessels, R. Wright, K.R. Anderson, M.G. Bato, A. Roman
2022, Scientific Investigations Report 2022-5116
A significant number of the world’s approximately 1,400 subaerial volcanoes with Holocene eruptions are unmonitored by ground-based sensors yet constitute a potential hazard to nearby residents and infrastructure, as well as air travel and global commerce. Data from an international constellation of more than 60 current satellite instruments provide...
Hydrogeologic characteristics of Hourglass and New Years Cave Lakes at Jewel Cave National Monument, South Dakota, from water-level and water-chemistry data, 2015–21
Colton J. Medler
2022, Scientific Investigations Report 2022-5108
Jewel Cave National Monument is in the western Black Hills of South Dakota and contains an extensive cave network, including various subterranean water bodies (cave lakes) that are believed to represent the regionally important Madison aquifer. Recent investigations have sought to improve understanding of hydrogeologic characteristics of cave lakes in...
Ecological Coastal Units – Standardized global shoreline characteristics
Roger Sayre, Kevin Butler, Keith Van Graafeiland, Sean Breyer, Dawn Wright
2022, Conference Paper, Oceans 2022, Hampton Roads
A new set of resources is now available that describe global shoreline characteristics. High resolution (30 m), globally comprehensive Coastal Segment Units (CSUs) and Ecological Coastal Units (ECUs) were developed in a collaboration between the U.S. Geological Survey (USGS), Esri, and the Marine Biodiversity Observation Network (MBON). The data were...
Delineating the Pierre Shale from geophysical surveys east and southeast of Ellsworth Air Force Base, South Dakota, 2021
Colton J. Medler
2022, Scientific Investigations Map 3497
The U.S. Geological Survey, in cooperation with the U.S. Air Force Civil Engineer Center, used surface-geophysical methods to delineate the top of Cretaceous Pierre Shale along survey transects in selected areas east and southeast of Ellsworth Air Force Base, South Dakota, from April to September 2021. Two complementary geophysical methods—electrical...
Mapping the probability of freshwater algal blooms with various spectral indices and sources of training data
Tyler V. King, Stephen A. Hundt, Konrad Hafen, Victoria G. Stengel, Scott D. Ducar
2022, Journal of Applied Remote Sensing (16)
Algal blooms are pervasive in many freshwater environments and can pose risks to the health and safety of humans and other organisms. However, monitoring and tracking of potentially harmful blooms often relies on in-person observations by the public. Remote sensing has proven useful in augmenting in situ observations of algal...
Groundwater quality and geochemistry of the western wet gas part of the Marcellus Shale Oil and Gas Play in West Virginia
Mark D. Kozar, Mitchell A. McAdoo, Karl B. Haase
2022, Scientific Investigations Report 2022-5094
Thirty rural residential water wells in the wet gas region of the Marcellus Shale oil and gas play in northwestern West Virginia were sampled by the U.S. Geological Survey (USGS) in 2018, in cooperation with West Virginia State agencies, to analyze for a range of water-quality constituents, including major ions,...
Ungulate migrations of the western United States, volume 3
Matthew J. Kauffman, Blake Lowrey, Jodi Berg, Scott Bergen, Doug Brimeyer, Patrick Burke, Teal Cufaude, James W. Cain III, Jeffrey Cole, Alyson Courtemanch, Michelle Cowardin, Julie Cunningham, Melia DeVivo, Jennifer Diamond, Orrin Duvuvuei, Julien Fattebert, Joanna R. Ennis, Darby Finley, Jessica Fort, Gary Fralick, Eric Freeman, Jeff Gagnon, Julie Garcia, Emily R. Gelzer, Morgan Graham, Jacob Gray, Evan Greenspan, L. Embere Hall, Curtis Hendricks, Andy Holland, Brian Holmes, Katey Huggler, Mark A. Hurley, Emily Jeffreys, Aran Johnson, Lee Knox, Kevin Krasnow, Zack Lockyer, Hannah Manninen, Mike McDonald, Jennifer L. McKee, James Meacham, Jerod Merkle, Barb Moore, Tony W. Mong, Clayton Nielsen, Brendan Oates, Kim Olsen, Daniel Olson, Lucas Olson, Matt Pieron, Jake Powell, Annemarie Prince, Kelly Proffitt, Craig Reddell, Corinna Riginos, Robert Ritson, Sierra Robatcek, Shane Roberts, Hall Sawyer, Cody Schroeder, Jessie Shapiro, Nova Simpson, Scott Sprague, Alethea Steingisser, Nicole Tatman, Benjamin Turnock, Cody F. Wallace, Laura Wolf
2022, Scientific Investigations Report 2022-5088
Ungulates (hooved mammals) have a broad distribution across the western United States and play an important role in maintaining predator-prey dynamics, affecting vegetation communities, and providing economic benefits to regional communities through tourism and hunting. Throughout the diverse landscapes they occupy, many ungulate populations undertake seasonal migrations to exploit spatially...
The National Cooperative Geologic Mapping Program’s U.S. GeoFramework Initiative — Delivering a digital database of geologic map information by 2030
Jenna L. Shelton, William Andrews, Joseph P. Colgan, Samuel Johnstone, David R. Soller, Richard Berg, Donald S. Sweetkind, Kristine L. Zellman, John Brock, Kate Ritzel
2022, Fact Sheet 2022-3079
The U.S. Geological Survey's National Cooperative Geologic Mapping Program's U.S. GeoFramework Initiative responds to Congressional direction to implement the National Geologic Map Database Phase Three. The U.S. GeoFramework Initiative aims to create and deliver a new digital geologic framework of the United States by 2030. This Fact Sheet outlines the...
Spatial models can improve the experimental design of field-based transplant gardens by preventing bias due to neighborhood crowding
Andrii Zaiats, Juan M. Requena-Mullor, Matthew J. Germino, Jennifer S. Forbey, Bryce A. Richardson, T. Trevor Caughlin
2022, Ecology and Evolution (12)
Field-based transplant gardens, including common and reciprocal garden experiments, are a powerful tool for studying genetic variation and gene-by-environment interactions. These experiments assume that individuals within the garden represent independent replicates growing in a homogenous environment. Plant neighborhood interactions are pervasive across plant populations and could violate assumptions of transplant...
Assessment of significant sand resources in Federal and California State Waters of the San Francisco, Oceanside, and Silver Strand littoral cell study areas along the continental shelf of California
Jonathan A. Warrick, James E. Conrad, Antoinette Papesh, Tom Lorenson, Ray Sliter
2022, Open-File Report 2022-1095
Executive SummaryThe Sand Resources Project was established through collaborative agreements between the U.S. Geological Survey (USGS), the Bureau of Ocean Energy Management (BOEM), and the California Ocean Protection Council (OPC) with the purpose of evaluating sand and gravel resources in Federal and California State Waters for potential use in...
Compilation of existing data for sand resource studies in Federal and California State Waters of the San Francisco, Oceanside, and Silver Strand littoral cell study areas along the continental shelf of California—Strategy for field studies and sand resource assessment
Jonathan A. Warrick, James E. Conrad, Antoinette Papesh, Tom Lorenson, Ray Sliter
2022, Open-File Report 2022-1094
Executive SummaryThe Sand Resources Project was established through collaborative agreements between the U.S. Geological Survey (USGS), the Bureau of Ocean Energy Management (BOEM), and the California Ocean Protection Council (OPC) with the purpose of evaluating sand and gravel resources in Federal and California State Waters for potential use in...
Landsat Collection 2 Level-3 Burned Area science product
U.S. Geological Survey
2022, Fact Sheet 2022-3083
Accurate and complete data on fire locations and burned areas are needed to quantify trends and patterns of fire occurrence, characterize drivers of fire, project future fire pattern behavior, and help with assessments of fire effects on natural and social systems. The Landsat Collection 2 Level-3 Burned Area science product...
Landsat Collection 2 Level-3 Dynamic Surface Water Extent science product
U.S. Geological Survey
2022, Fact Sheet 2022-3084
The Landsat Collection 2 Level-3 Dynamic Surface Water Extent science product provides raster data that represent surface water inundation per pixel in Landsat 4–9 imagery. The Collection 2 Dynamic Surface Water Extent science product contains six acquisition-based raster products relating to surface water. Surface water extent is modulated by weather...
Water-quality trends in the Delaware River Basin calculated using multisource data and two methods for trend periods ending in 2018
Megan E. Shoda, Jennifer C. Murphy
2022, Scientific Investigations Report 2022-5097
Many organizations in the Delaware River Basin (DRB) monitor surface-water quality for regulatory, scientific, and decision-making purposes. In support of these purposes, over 260,000 water-quality records provided by 8 different organizations were compiled, screened, and used to generate water-quality trends in the DRB. These trends, for periods of record that...
The Seamless Integrated Geologic Mapping (SIGMa) extension to the Geologic Map Schema (GeMS)
Kenzie J. Turner, Jeremiah B. Workman, Joseph P. Colgan, Amy K. Gilmer, Margaret E. Berry, Samuel Johnstone, Kathleen F. Warrell, Marieke Dechesne, D. Paco VanSistine, Ren A. Thompson, Adam M. Hudson, Kristine L. Zellman, Donald S. Sweetkind, Chester A. Ruleman
2022, Scientific Investigations Report 2022-5115
Geologic maps are the fundamental building blocks of surface and subsurface three-dimensional geologic framework models of the Earth’s crust. However, as the production and availability of geologic map databases continues to increase, inconsistent data models and the lack of synthesized, national geologic map data at scales appropriate for informed decision...
Flood-inundation maps for Schoharie Creek in North Blenheim, New York
Elizabeth A. Nystrom
2022, Scientific Investigations Report 2022-5119
Digital flood-inundation maps for a 2.4-mile reach of the Schoharie Creek in North Blenheim, New York, were created by the U.S. Geological Survey (USGS) in cooperation with the New York Power Authority. The flood-inundation maps, which can be accessed through the USGS Flood Inundation Mapping Science website at <a href="https://fim.wim.usgs.gov/fim/"...
Harnessing island–ocean connections to maximize marine benefits of island conservation
Stuart A. Sandin, Penny A. Becker, Ceiba Becker, Kate Brown, Natalia G. Erazo, Cielo Figuerola, Robert N. Fisher, Alan M. Friedlander, Tadashi Fukami, Nicholas A. J. Graham, Daniel S. Gruner, Nick D. Holmes, Wieteke A. Holthuijzen, Holly P. Jones, Mariela Rios, Araceli Samaniego, Wes Sechrest, Brice X. Semmens, Hazel E. Thornton, Rebecca Vega Thurber, Christy Wails, Coral A. Wolf, Brian J. Zgliczynski
2022, PNAS (119)
Islands support unique plants, animals, and human societies found nowhere else on the Earth. Local and global stressors threaten the persistence of island ecosystems, with invasive species being among the most damaging, yet solvable, stressors. While the threat of invasive terrestrial mammals on island flora and fauna is well recognized,...
Evaluating the sensitivity of multi-dimensional model predictions of salmon habitat to the source of remotely sensed river bathymetry
Lee R. Harrison, Carl J. Legleiter, Vamsi K Sridharana, Peter Dudley, Miles E. Daniels
2022, Water Resources Research (58)
Multi-dimensional numerical models are fundamental tools for investigating biophysical processes in aquatic ecosystems. Remote sensing techniques increase the feasibility of applying such models at riverscape scales, but tests of model performance on large rivers have been limited. We evaluated the potential to develop two-dimensional (2D) and three-dimensional...
Quantifying aspects of rangeland health at watershed scales in Colorado using remotely sensed data products
Nathan J. Kleist, Christopher T Domschke, S E Litschert, J Hunter Seim, Sarah K. Carter
2022, Rangelands (44) 398-410
During grazing permit renewals, the Bureau of Land Management assesses land health using indicators typically measured using field-based data collected from individual sites within grazing allotments. However, agency guidance suggests assessments be completed at larger spatial scales.We explored how the current generation of...
Assessment of vulnerabilities and opportunities to restore marsh sediment supply at Nisqually River Delta, west-central Washington
Eric E. Grossman, Sean C. Crosby, Andrew W. Stevens, Daniel J. Nowacki, Nathan R. vanArendonk, Christopher A. Curran
2022, Open-File Report 2022-1088
A cascading set of hazards to coastal environments is intimately tied to sediment transport and includes the flooding and erosion of shorelines and habitats that support communities, industry, infrastructure, and ecosystem functions (for example, habitats critical to fisheries). This report summarizes modeling and measurement data used to evaluate...
Working toward a National Coordinated Soil Moisture Monitoring Network: Vision, progress, and future directions
C. Bruce Baker, Michael H. Cosh, John Bolten, Mark Brusberg, Todd Caldwell, Stephanie Connolly, Iliyana Dobreva, Nathan Edwards, Peter E. Goble, Tyson E. Ochsner, Steven M. Quiring, Michael Robotham, Marina Skumanich, Mark Svoboda, W. Alex White, Molly Woloszyn
2022, Bulletin of the American Meteorological Society (103) E2719-E2732
Soil moisture is a critical land surface variable, impacting the water, energy, and carbon cycles. While in situ soil moisture monitoring networks are still developing, there is no cohesive strategy or framework to coordinate, integrate,...
The Pondosa fault zone: A distributed dextral-normal-oblique fault system in northeastern California, USA
Jessica Ann Thompson Jobe, Richard W. Briggs, Ryan D. Gold, Stephen B. DeLong, Madeline Hille, Jaime Delano, Samuel Johnstone, Alexandra Pickering, Rachel Phillips, Andrew T. Calvert
2022, Geosphere (19) 179-205
The tectonic domains of Basin and Range extension, Cascadia subduction zone contraction, and Walker Lane dextral transtension converge in the Mushroom Rock region of northeastern California, USA. We combined analysis of high-resolution topographic data, bedrock mapping, 40Ar/39Ar geochronology, low-temperature thermochronology, and existing geologic and fault mapping to characterize an extensive dextral-normal-oblique...