Publications
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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Lava-ice interactions during historical eruptions of Veniaminof Volcano, Alaska and the potential for meltwater floods and lahars Lava-ice interactions during historical eruptions of Veniaminof Volcano, Alaska and the potential for meltwater floods and lahars
Veniaminof Volcano on the Alaska Peninsula of southwest Alaska is one of a small group of ice-clad volcanoes globally that erupts lava flows in the presence of glacier ice. Here, we describe the nature of lava-ice-snow interactions that have occurred during historical eruptions of the volcano since 1944. Lava flows with total volumes on the order of 0.006 km3 have been erupted in 1983...
Authors
Christopher F. Waythomas, Benjamin R Edwards, Thomas P Miller, Robert G. McGimsey
Climate change and ‘alien species in National Parks’: Revisited Climate change and ‘alien species in National Parks’: Revisited
The US National Park Service mission includes conserving native species and historical landscapes ‘unimpaired for the enjoyment of future generations’. However, humans have increased the introduction of non-native species that can become invasive and which have harmful impacts on native species and landscapes. We revisit two previous papers, ‘Alien Species in National Parks: Drawing...
Authors
Catherine S. Jarnevich, Terri Hogan, Jennifer Sieracki, Christine Lipsky, John Wullschleger
Genetic architecture and evolution of color variation in American black bears Genetic architecture and evolution of color variation in American black bears
Color variation is a frequent evolutionary substrate for camouflage in small mammals, but the underlying genetics and evolutionary forces that drive color variation in natural populations of large mammals are mostly unexplained. The American black bear, Ursus americanus (U. americanus), exhibits a range of colors including the cinnamon morph, which has a similar color to the brown bear...
Authors
E. Puckett, I. S. Davis, D. C. Harper, K. Wakamatsu, G. Battu, J. L. Belant, D. E. Beyer, C. Carpenter, A. P. Crupi, M. Davidson, C. S. DePerno, N. Forman, N. L. Fowler, D. L. Garshelis, N. Gould, K. Gunther, Mark A. Haroldson, S. Ito, David. M Kocka, C. Lackey, R. Leahy, C. Lee-Roney, T. Lewis, A. Lutto, K. McGowan, C. Olfenbuttel, M. Orlando, A. Platt, M. D. Pollard, M. Ramaker, Heather Reich, Jaime L. Sajecki, S. K. Sell, J. Strules, S. Thompson, Frank T. van Manen, Craig Whitman, R. Williamson, F. Winslow, C. B. Kaelin, M. S. Marks, G. S. Barsh
Spatial and temporal distribution of sinuous ridges in southeastern Terra Sabaea and the northern region of Hellas Planitia, Mars Spatial and temporal distribution of sinuous ridges in southeastern Terra Sabaea and the northern region of Hellas Planitia, Mars
Sinuous ridges are an important yet understudied component of Mars' hydrologic history. We have produced a map of sinuous ridges, valleys and channels, and tectonic ridges across southeastern Terra Sabaea and into northern Hellas Planitia (10°-45° S, 35°-80° E) using a CTX mosaic. Although we mapped different types of ridges and negative relief features, the focus of this paper are the...
Authors
Amber L. Gullikson, Ryan B. Anderson, Rebecca M.E. Williams
Effects of structure and volcanic stratigraphy on groundwater and surface water flow: Hat Creek basin, California, USA Effects of structure and volcanic stratigraphy on groundwater and surface water flow: Hat Creek basin, California, USA
Hydrogeologic systems in the southern Cascade Range in California (USA) develop in volcanic rocks where morphology, stratigraphy, extensional structures, and attendant basin geometry play a central role in groundwater flow paths, groundwater/surface-water interactions, and spring discharge locations. High-volume springs (greater than 3 m3/s) flow from basin-filling (
Authors
Marina Francesca Marcelli, Erick R. Burns, L.J. Patrick Muffler, Andrew J Meigs, Jennifer A. Curtis, Christian E. Torgersen
Disentangling direct and indirect effects of extreme events on coastal wetland communities Disentangling direct and indirect effects of extreme events on coastal wetland communities
One of the primary ways in which climate change will impact coastal freshwater wetlands is through changes in the frequency, intensity, timing and distribution of extreme weather events. Disentangling the direct and indirect mechanisms of population- and community-level responses to extreme events is vital to predicting how species composition of coastal wetlands will change under future
Authors
Courtney L. Davis, Susan E. Walls, William J. Barichivich, Mary Brown, David A.W. Miller
Understanding and modeling tephra transport: Lessons learned from the 18 May 1980 eruption of Mount St. Helens Understanding and modeling tephra transport: Lessons learned from the 18 May 1980 eruption of Mount St. Helens
Discoveries made during the 18 May 1980 eruption of Mount St. Helens advanced our understanding of tephra transport and deposition in fundamental ways. The eruption enabled detailed, quantitative observations of downwind cloud movement and particle sedimentation, along with the dynamics of co-pyroclastic-density current (PDC) clouds lofted from ground-hugging currents. The deposit was...
Authors
Larry G. Mastin, Steven Carey, Alexa R. Van Eaton, Julia Eychenne, Russell Sparks
Ungulate migrations of the western United States, volume 3 Ungulate migrations of the western United States, volume 3
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...
Authors
Matthew J. Kauffman, Blake Lowrey, Jodi Berg, Scott Bergen, Doug Brimeyer, Patrick Burke, Teal Cufaude, James W. Cain, 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
Fighting misinformation in seismology: Expert opinion on earthquake facts vs fiction Fighting misinformation in seismology: Expert opinion on earthquake facts vs fiction
Misinformation carries the potential for immense damage to public understanding of science and for evidence-based decision making at an individual and policy level. Our research explores the following questions within seismology: which claims can be considered misinformation, which are supported by a consensus, and which are still under scientific debate? Consensus and debate are...
Authors
Sarah Dryhurst, Femke Mulder, Irina Dallo, John Kerr, Sara K. McBride, Laure Fallou, Julia S. Becker
Insights from the Alabama Hills into Mesozoic magmatism and tectonics in eastern California Insights from the Alabama Hills into Mesozoic magmatism and tectonics in eastern California
New zircon U-Pb ages for the Alabama Hills Granite in Owens Valley, eastern California, range from 103 to 102 Ma, nearly 20 Ma older than previously published zircon ages. The data preclude previously implied links between the pluton and the adjacent Late Cretaceous Mount Whitney Intrusive Suite. Geochronologic and isotopic data indicate a connection between the Alabama Hills Granite and
Authors
Ryan Edward Frazer, Sean P. Gaynor, Drew S. Coleman, Jennifer M. Wenner
Habitat utilization, demography, and behavioral observations of the squat lobster, Eumunida picta (Crustacea: Anomura: Eumunididae), on western North Atlantic deep-water coral habitats Habitat utilization, demography, and behavioral observations of the squat lobster, Eumunida picta (Crustacea: Anomura: Eumunididae), on western North Atlantic deep-water coral habitats
Deep-sea coral habitats, comprising mostly Lophelia pertusa (Linnaeus 1758), are well developed on the upper and middle continental slope off the southeastern United States (SEUS). These habitats support a diverse and abundant invertebrate fauna, yet ecology and biology of most of these species are poorly known. Ten cruises conducted off the SEUS (Summer–Fall; Cape Lookout, NC–Cape...
Authors
Martha S. Nizinski, Jennifer McClain Counts, Steve W. Ross
Water-quality improvement of an agricultural watershed marsh after macrophyte establishment and point-source reduction Water-quality improvement of an agricultural watershed marsh after macrophyte establishment and point-source reduction
Green Lake, located in central Wisconsin USA within a watershed with land use dominated by agriculture, is listed as impaired under Sect. 303(d) of the Clean Water Act. The primary tributary, Silver Creek, is also impaired because of high total phosphorus (TP) concentrations. Silver Creek flows through a shallow marsh before reaching the lake. Prior to 2006, the marsh was turbid and free...
Authors
Sarah Fuller, Edward P Boswell, Anita M. Thompson, Dale M. Robertson