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

10894 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 53, results 1301 - 1325

Show results on a map

Publication Extents

Not all publications have extents, not all extents are completely accurate
Hydrologic and hydraulic analyses of the Grand River, Red Cedar River, and Sycamore Creek near Lansing, Michigan
Matthew T. Whitehead, Chad J. Ostheimer
2021, Scientific Investigations Report 2020-5144
The U.S. Geological Survey (USGS) completed hydrologic and hydraulic analyses for selected reaches of the Grand River, Red Cedar River, and Sycamore Creek near Lansing, Michigan, in cooperation with the city of Lansing. The study comprised a 3.1-mile reach of the Grand River, a 30.3-mile reach of the Red Cedar...
Yellowstone Volcano Observatory 2018 annual report
Yellowstone Volcano Observatory
2021, Circular 1474
The Yellowstone Volcano Observatory (YVO) monitors volcanic and hydrothermal activity associated with the Yellowstone magmatic system, conducts research into magmatic processes occurring beneath Yellowstone Caldera, and issues timely warnings and guidance related to potential future geologic hazards. This report summarizes the activities and findings of YVO during the year 2018,...
Effectiveness of a distance sampling from roads program for white-tailed deer in the National Capital Region parks
Nicholas S. Green, Mark L. Wildhaber, Janice L. Albers
2021, Natural Resource Report 2021/2224
We evaluated the effectiveness of a distance sampling from roads program for estimating population sizes of white-tailed deer (Odocoileus virginianus) from 2001 to 2015 in parks of the National Capital Region (NCR), National Parks Service. Distance sampling is a method for estimating the density of organisms using a distribution of...
Modeling estrogenic activity in streams throughout the Potomac and Chesapeake Bay watersheds
Stephanie E. Gordon, Daniel K. Jones, Vicki S. Blazer, Luke R. Iwanowicz, Brianna Williams, Kelly Smalling
2021, Environmental Monitoring and Assessment (193)
Endocrine-disrupting compounds (EDCs), specifically estrogenic endocrine-disrupting compounds, vary in concentration and composition in surface waters under the influence of different landscape sources and landcover gradients. Estrogenic activity in surface waters may lead to adverse effects in aquatic species at both individual and population levels, often observed...
Biological and chemical recovery of acidified Catskill Mountain streams in response to the Clean Air Act Amendments of 1990
Barry P. Baldigo, Scott D. George, Dylan R. Winterhalter, Michael McHale
2021, Atmospheric Environment (249)
Decades of acidic deposition have adversely affected aquatic and terrestrial ecosystems in acid-sensitive watersheds in parts of the eastern United States. The national Acid Rain Program (Title IV of the 1990 Clean Air Act Amendments - CAAA) helped reduce emissions of sulfur dioxide (SO2) and nitrogen oxides (NOx) and resulted...
Volcanic seismicity beneath Chuginadak Island, Alaska (Cleveland and Tana volcanoes): Implications for magma dynamics and eruption forecasting
John Power, Diana Roman, John J. Lyons, Matthew M. Haney, Daniel J. Rasmussen, Terry Plank, K. P. Nicolaysen, Pavel Izbekov, C. Werner, A Kaufman
2021, Journal of Volcanology and Geothermal Research (412)
Cleveland and Tana are remote volcanoes located in the central Aleutian volcanic arc on the eastern end of the Islands of Four Mountains (IFM). The persistently active Mount Cleveland volcano, on the western side of Chuginadak Island, is surrounded by several closely spaced Quaternary volcanic centers including Carlisle, Herbert, Kagamil, Tana, and...
Characterization of groundwater quality and discharge with emphasis on selenium in an irrigated agricultural drainage near Delta, Colorado, 2017–19
M. Alisa Mast
2021, Scientific Investigations Report 2020-5132
Selenium is a water-quality constituent of concern for aquatic ecosystems in the lower Gunnison River Basin. Selenium is derived from bedrock of the Mancos Shale and is mobilized and transported to groundwater and surface water by application of irrigation water. Although it is recognized that groundwater contributes an appreciable amount...
Tectonic and magmatic controls on the metallogenesis of porphyry deposits in Alaska
Douglas C. Kreiner, James V. Jones III, Karen D. Kelley, Garth E. Graham
2021, Book chapter, Porphyry deposits of the northwestern Cordillera of North America: A 25-year update
Porphyry Cu and Mo deposits and occurrences are found throughout Alaska; they formed episodically during repeated subduction and arc-continent collisions spanning the Silurian to Quaternary. Porphyry systems occur in continental-margin and island arcs, which are broadly grouped into pre-accretionary or post-accretionary arcs. Pre-Mesozoic occurrences formed in continental or island arcs...
The 2018 update of the US National Seismic Hazard Model: Where, why, and how much probabilistic ground motion maps changed
Mark D. Petersen, Allison Shumway, Peter M. Powers, Charles S Mueller, Morgan P. Moschetti, Arthur D. Frankel, Sanaz Rezaeian, Daniel McNamara, Nico Luco, Oliver S. Boyd, Kenneth S. Rukstales, Kishor S. Jaiswal, Eric M. Thompson, Susan M. Hoover, Brandon Clayton, Edward H. Field, Yuehua Zeng
2021, Earthquake Spectra (37) 959-987
The 2018 US Geological Survey National Seismic Hazard Model (NSHM) incorporates new data and updated science to improve the underlying earthquake and ground motion forecasts for the conterminous United States. The NSHM considers many new data and component input models: (1) new earthquakes between 2013 and 2017 and updated earthquake...
Why Lyme disease is common in the northern US, but rare in the south: The roles of host choice, host-seeking behavior, and tick density
Howard Ginsberg, Graham J. Hickling, Russell L. Burke, Nicholas H. Ogden, Lorenza Beati, Roger A. LeBrun, Isis M. Arsnoe, Rick Gerhold, Seungeun Han, Kaetlyn Jackson, Lauren Maestas, Teresa Moody, Genevieve Pang, Breann Ross, Eric L. Rulison, Jean I. Tsao
2021, PLoS Biology (19)
Lyme disease is common in the northeastern United States, but rare in the southeast, even though the tick vector is found in both regions. Infection prevalence of Lyme spirochetes in host-seeking ticks, an important component to the risk of Lyme disease, is also high in the northeast and northern...
Groundwater flow conceptualization of the Pahute Mesa–Oasis Valley Groundwater Basin, Nevada—A synthesis of geologic, hydrologic, hydraulic-property, and tritium data
Tracie R. Jackson, Joseph M. Fenelon, Randall L. Paylor
2021, Scientific Investigations Report 2020-5134
This report provides a groundwater-flow conceptualization that integrates geologic, hydrologic, hydraulic-property, and radionuclide data in the Pahute Mesa–Oasis Valley (PMOV) groundwater basin, southern Nevada. Groundwater flow in the PMOV basin is of interest because 82 underground nuclear tests were detonated, most near or below the water table. A potentiometric...
Changing climate drives future streamflow declines and challenges in meeting water demand across the southwestern United States
Olivia L. Miller, Annie L. Putman, Jay R. Alder, Matthew P. Miller, Daniel K. Jones, Daniel Wise
2021, Journal of Hydrology X (11)
Society and the environment in the arid southwestern United States depend on reliable water availability, yet current water use outpaces supply. Water demand is projected to grow in the future and climate change is expected to reduce supply. To adapt, water...
Field response and surface rupture characteristics of the 2020 M6.5 Monte Cristo Range earthquake, central Walker Lane, Nevada
Richard D Koehler, Seth Dee, Austin John Elliott, Alexandra Elise Hatem, Alexandra Pickering, Ian Pierce, Gordon G. Seitz
2021, Seismological Research Letters (92) 823-829
The M 6.5 Monte Cristo Range earthquake that occurred in the central Walker Lane on 15 May 2020 was the largest earthquake in Nevada in 66 yr and resulted in a multidisciplinary scientific field response. The earthquake was the...
Paleoseismic trenching reveals late quaternary kinematics of the Leech River Fault: Implications for forearc strain accumulation in Northern Cascadia
Nicolas Harrichhausen, Kristin D. Morell, Christine Regalla, Scott E.K. Bennett, Lucinda J. Leonard, Emerson M. Lynch, Edwin Nissen
2021, Bulletin of the Seismological Society of America (111) 1110-1138
New paleoseismic trenching indicates late Quaternary oblique right‐lateral slip on the Leech River fault, southern Vancouver Island, Canada, and constrains permanent forearc deformation in northern Cascadia. A south‐to‐north reduction in northward Global Navigation Satellite System velocities and seismicity across the Olympic Mountains, Strait of Juan de Fuca (JDF), and the...
Quantifying nuisance ground motion thresholds for induced earthquakes
Ryan Schultz, Vince Quitoriano, David J. Wald, Gregory C. Beroza
2021, Earthquake Spectra (37) 789-802
Hazards from induced earthquakes are a growing concern with a need for effective management. One aspect of that concern is the “nuisance” from unexpected ground motions, which have the potential to cause public alarm and discontent. In this article, we borrow earthquake engineering concepts to quantify the...
Have sustained acidic deposition decreases led to increased calcium availability in recovering watersheds of the Adirondack region of New York, USA?
Gregory B. Lawrence, Jason Siemion, Michael R. Antidormi, Donald B. Bonville, Michael McHale
2021, Soil Systems (5)
Soil calcium depletion has been strongly linked to acidic deposition in eastern North America and recent studies have begun to document the recovery of soils in response to large decreases in acidic deposition. However, increased calcium availability has not yet been seen in the B horizon, where calcium depletion has...
Water-quality trends of urban streams in Independence, Missouri, 2005–18
Miya N. Barr, Stephen J. Kalkhoff
2021, Scientific Investigations Report 2020-5130
The U.S. Geological Survey and the city of Independence, Missouri, Water Pollution Control Department has studied the water quality and ecological condition of urban streams within Independence since 2005. Selected physical properties, nutrients, chloride, fecal indicator bacteria (Escherichia coli and total coliform), total dissolved solids, and suspended-sediment concentration data for...
Development and application of surrogate models, calculated loads, and aquatic export of carbon based on specific conductance, Big Cypress National Preserve, south Florida, 2015–17
Amanda Booth
2021, Open-File Report 2020-1136
Understanding the carbon transport within aquatic environments is crucial to quantifying global and local carbon budgets, yet limited empirical data currently (2021) exist. This report documents methodology and provides data for quantifying the aquatic export of carbon from a cypress swamp within Big Cypress National Preserve and is part of...
Re-examination of population structure in Arctic ringed seals using DArTseq genotyping
Aimee R. Lang, Peter L. Boveng, L. Quakenbush, K. Robertson, M. Lauf, Karyn D. Rode, H. Ziel, B .L. Taylor
2021, Endangered Species Research (44) 11-31
Although Arctic ringed seals Phoca hispida hispida are currently abundant and broadly distributed, their numbers are projected to decline substantially by the year 2100 due to climate warming. While understanding population structure could provide insight into the impact of environmental changes on this subspecies, detecting demographically important levels of exchange can be...
Coseismic fault slip and afterslip associated with the M5.7 March 18, 2020 Magna, Utah, earthquake
Frederick Pollitz, Charles Wicks, Jerry L. Svarc
2021, Seismological Research Letters (92) 741-754
The 2020 Magna, Utah, earthquake produced observable crustal deformation over a ∼ 100 km2 area around the southeast margin of Great Salt Lake, but it did not produce any surface rupture. To obtain a detailed picture of the fault slip, we combine strong motion seismic waveforms with GPS static offsets...
Geochemistry of coastal permafrost and erosion-driven organic matter fluxes to the Beaufort Sea near Drew Point, Alaska
Emily M. Bristol, Craig T. Connolly, Thomas Lorenson, Bruce M. Richmond, Anastasia G. Ilgen, Charles R. Choens, Diana L. Bull, Mikhail Z. Kanevskiy, Go Iwahana, Benjamin M. Jones, James W. McClelland
2021, Frontiers in Earth Science (8)
Accelerating erosion of the Alaska Beaufort Sea coast is increasing inputs of organic matter from land to the Arctic Ocean, and improved estimates of organic matter stocks in eroding coastal permafrost are needed to assess their mobilization rates under contemporary conditions. We collected three permafrost cores (4.5–7.5 m long)...
Trends in groundwater levels in and near the Rosebud Indian Reservation, South Dakota, water years 1956–2017
Kristen J. Valseth, Daniel G. Driscoll
2021, Scientific Investigations Report 2020-5119
The U.S. Geological Survey (USGS), in cooperation with the Rosebud Sioux Tribe, completed a study to characterize water-level fluctuations in observation wells to examine driving factors that affect water levels in and near the Rosebud Indian Reservation, which comprises all of Todd County. The study investigates concerns regarding potential effects...
Kīlauea’s 2008–2018 summit lava lake—Chronology and eruption insights
Matthew R. Patrick, Tim R. Orr, Don Swanson, Bruce F. Houghton, Kelly M. Wooten, Liliana G. Desmither, Carolyn Parcheta, David Fee
Matthew R. Patrick, Tim R. Orr, Don Swanson, Bruce F. Houghton, editor(s)
2021, Professional Paper 1867-A
The first eruption at Kīlauea’s summit in 25 years began on March 19, 2008, and persisted for 10 years. The onset of the eruption marked the first explosive activity at the summit since 1924, forming the new “Overlook crater” (as the 2008 summit eruption crater has been informally named) within...