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The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse more than 65,000 articles 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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Pore pressure threshold and fault slip potential for induced earthquakes in the Dallas-Fort Worth area of north central Texas Pore pressure threshold and fault slip potential for induced earthquakes in the Dallas-Fort Worth area of north central Texas
Earthquakes were induced in the Fort Worth Basin from 2008 through 2020 by increase in pore pressure from injection of oilfield wastewater (SWD). In this region and elsewhere, a missing link in understanding the mechanics of causation has been a lack of comprehensive models of pore pressure evolution (ΔPp) from SWD. We integrate detailed earthquake catalogs, ΔPp, and probabilistic fault...
Authors
Peter H. Hennings, J.P. Nicot, Rebecca S. Gao, Heather R. DeShon, Jens-Erik Lundstern, Alan P. Morris, Michael R. Brudzinski, Elizabeth A. Horne, Caroline Breton
Trachyandesite of Kennedy Table, its vent complex, and post−9.3 Ma uplift of the central Sierra Nevada Trachyandesite of Kennedy Table, its vent complex, and post−9.3 Ma uplift of the central Sierra Nevada
Tectonic interpretation of the central Sierra Nevada—whether the crest of the Sierra Nevada (California, USA) was uplifted in the late Cenozoic or whether the range has undergone continuous down-wearing since the Late Cretaceous—is controversial, since there is no obvious tectonic explanation for renewed uplift. The strongest direct evidence for late Cenozoic uplift of the central Sierra...
Authors
Edward Hildreth, Judith Fierstein, Fred M. Phillips, Andrew T. Calvert
Coastal wetland shoreline change monitoring: A comparison of shorelines from high-resolution WorldView satellite imagery, aerial imagery, and field surveys Coastal wetland shoreline change monitoring: A comparison of shorelines from high-resolution WorldView satellite imagery, aerial imagery, and field surveys
Shoreline change analysis is an important environmental monitoring tool for evaluating coastal exposure to erosion hazards, particularly for vulnerable habitats such as coastal wetlands where habitat loss is problematic world-wide. The increasing availability of high-resolution satellite imagery and emerging developments in analysis techniques support the implementation of these data...
Authors
Kathryn E.L. Smith, Joseph F. Terrano, Jonathan L Pitchford, Michael Archer
Projected changes of regional lake hydrologic characteristics in response to 21st century climate change Projected changes of regional lake hydrologic characteristics in response to 21st century climate change
Inland lakes are socially and ecologically important components of many regional landscapes. Exploring lake responses to plausible future climate scenarios can provide important information needed to inform stakeholders of likely effects of hydrologic changes on these waterbodies in coming decades. To assess potential climate effects on lake hydrology, we combined a previously published...
Authors
Zachary J. Hanson, Jacob Aaron Zwart, Stuart E. Jones, Alan F. Hamlet, Diogo Bolster
Potential role for microbial ureolysis in the rapid formation of carbonate tufa mounds Potential role for microbial ureolysis in the rapid formation of carbonate tufa mounds
Modern carbonate tufa towers in the alkaline (~pH 9.5) Big Soda Lake (BSL), Nevada, exhibit rapid precipitation rates (exceeding 3 cm/year) and host diverse microbial communities. Geochemical indicators reveal that carbonate precipitation is, in part, promoted by the mixing of calcium-rich groundwater and carbonate-rich lake water, such that a microbial role for carbonate precipitation...
Authors
Fernando Medina Ferrer, Michael R. Rosen, Virginia V. Russell, Jayme Feyhl-Buska, Fredrik Sonderholm, Sean Loyd, Russell Shapiro, Blake W. Stamps, Victoria Petryshyn, Cansu Demirel-Floyd, Jake V. Bailey, Hope A Johnson, John R. Spear, Frank A Corsetti
Integrating high-resolution coastal acidification monitoring data across seven United States estuaries Integrating high-resolution coastal acidification monitoring data across seven United States estuaries
Beginning in 2015, the United States Environmental Protection Agency’s (EPA’s) National Estuary Program (NEP) started a collaboration with partners in seven estuaries along the East Coast (Barnegat Bay; Casco Bay), West Coast (Santa Monica Bay; San Francisco Bay; Tillamook Bay), and the Gulf of Mexico (GOM) Coast (Tampa Bay; Mission-Aransas Estuary) of the United States to expand the use...
Authors
Nicholas A Rosenau, Holly Galavotti, Kimberly K. Yates, Curtis Bohlen, Christopher W. Hunt, Matthew Liebman, A Cheryl Brown, Stephen R. Pacella, John L. Largier, Karina Nielsen, Xinping Hu, Melissa McCutcheon, James Vasslides, Matthew Poach, Tom Ford, Karina Johnston, Alex Steele
Coastal observations of alligator snapping turtles in the Florida Panhandle Coastal observations of alligator snapping turtles in the Florida Panhandle
The genus Macrochelys (alligator snapping turtles) inhabits river systems that empty into the Gulf of Mexico from Florida to Texas and contains the largest freshwater turtles in North America (Pritchard 2006). This paper details observations of Macrochelys on the coast and barrier islands in Franklin and Gulf counties, Florida, that contribute to our knowledge of their movements in...
Authors
Kevin M. Enge, Bradley S. Smith, Brooke L. Talley, Terri Cannon, Travis M. Thomas, Daniel J. Catizone
Physics-guided machine learning for scientific discovery: An application in simulating lake temperature profiles Physics-guided machine learning for scientific discovery: An application in simulating lake temperature profiles
Physics-based models are often used to study engineering and environmental systems. The ability to model these systems is the key to achieving our future environmental sustainability and improving the quality of human life. This article focuses on simulating lake water temperature, which is critical for understanding the impact of changing climate on aquatic ecosystems and assisting in...
Authors
Xiaowei Jia, Jared Willard, Anuj Karpatne, Jordan Read, Jacob Aaron Zwart, Michael Steinbach, Vipin Kumar
Piscine predation on juvenile salmon in sub-arctic Alaskan rivers: Associations with season, habitat, predator size and streamflow Piscine predation on juvenile salmon in sub-arctic Alaskan rivers: Associations with season, habitat, predator size and streamflow
Predation on anadromous salmon can have important consequences for both predators and prey. Salmon provide large seasonal pulses of energy and nutrients via carcasses, eggs and juveniles to many freshwater consumers, and conversely, predation can represent a significant source of mortality for juvenile salmon. Recent declines of Chinook salmon (Oncorhynchus tshawytscha) populations in...
Authors
Erik R. Schoen, Kristen W. Sellmer, Mark S. Wipfli, Juan A. López, Benjamin E. Meyer, Renae Ivanoff
New amphibian and reptile parish records from Louisiana, USA New amphibian and reptile parish records from Louisiana, USA
Dundee and Rossman (1989) published distribution maps of Louisiana herpetofaunal species in The Amphibians and Reptiles of Louisiana over 30 years ago. Since then many records have been published, mostly in Herpetological Review, documenting additions to these original maps. Though many are single species additions, several compilations of new Louisiana records have been published...
Authors
Brad Glorioso
Range-wide population genetic analysis of Seaside Sparrows (Ammospiza maritima) supports at least five distinct population segments that do not align with current subspecies descriptions Range-wide population genetic analysis of Seaside Sparrows (Ammospiza maritima) supports at least five distinct population segments that do not align with current subspecies descriptions
As an obligate salt marsh species, Seaside Sparrows (Ammospiza maritima) are vulnerable to numerous threats including climate change, coastal erosion, sea-level rise, and both natural and anthropogenic disasters. Of the 9 recognized subspecies, 2 are extinct and 1 is endangered. Previous genetic analyses of mitochondrial DNA (mtDNA) and microsatellite loci showed that current taxonomy...
Authors
Kathryn E.C. Davis, Amie E. Settlecowski, Mackenzie R. Roeder, Carolyn Enloe, Thomas Virzi, Margaret Hunter, Stefan Woltmann, Sabrina S. Taylor
Registration and application of sea lamprey pheromones for sea lamprey control in the United States and Canada Registration and application of sea lamprey pheromones for sea lamprey control in the United States and Canada
Since the identification of 3-trifluoromethyl-4-nitrophenol as a lampricide in the 1950s, control of sea lamprey populations in the Great Lakes has largely relied on lampricides, barriers, and traps. Lampricide treatments target larval lampreys in tributaries of the Great Lakes. The Great Lakes Fishery Commission oversees sea lamprey control efforts and has invested in technologies that...
Authors
Kim T. Fredricks, Nicholas S. Johnson, Terrance Hubert, Mike Siefkes