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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GW/SW-MST: A groundwater/surface-water method selection tool GW/SW-MST: A groundwater/surface-water method selection tool
Groundwater/surface-water (GW/SW) exchange and hyporheic processes are topics receiving increasing attention from the hydrologic community. Hydraulic, chemical, temperature, geophysical, and remote sensing methods are used to achieve various goals (e.g., inference of GW/SW exchange, mapping of bed materials, etc.), but the application of these methods is constrained by site conditions...
Authors
Steven Hammett, Frederick Day-Lewis, Brett Russell Trottier, Paul M. Barlow, Martin A. Briggs, Geoffrey N. Delin, Judson Harvey, Carole D. Johnson, John W. Lane, D.O. Rosenberry, Dale D. Werkema
Large fires or small fires, will they differ in affecting shifts in species composition and distributions under climate change? Large fires or small fires, will they differ in affecting shifts in species composition and distributions under climate change?
Climate change is expected to increase fire activity, which has the potential to accelerate climate-induced shifts in species composition and distribution in the boreal-temperate ecotone. Wildfire can kill resident trees, and thus provide establishment opportunities for migrating tree species. However, the role of fire size and its interactions with tree species with varied life-history...
Authors
Wenru Xu, Hong S. He, Chao Huang, Shengwu Duan, Todd Hawbaker, Paul D. Henne, Yu Liang, Zhiliang Zhu
A review of the microtremor horizontal-to-vertical spectral ratio (MHVSR) method A review of the microtremor horizontal-to-vertical spectral ratio (MHVSR) method
The single-station microtremor horizontal-to-vertical spectral ratio (MHVSR) method was initially proposed to retrieve the site amplification function and its resonance frequencies produced by unconsolidated sediments overlying high-velocity bedrock. Presently, MHVSR measurements are predominantly conducted to obtain an estimate of the fundamental site frequency at sites where a strong...
Authors
S. Molnar, A. Sirohey, J. Assaf, P.-Y. Bard, C. Castellaro, C. Cornou, B. Cox, B. Guillier, B. Hassani, H. Kawase, S. Matsushima, F. J. Sánchez-Sesma, Alan Yong
A review of near-surface QS estimation methods using active and passive sources A review of near-surface QS estimation methods using active and passive sources
Seismic attenuation and the associated quality factor (Q) have long been studied in various sub-disciplines of seismology, ranging from observational and engineering seismology to near-surface geophysics and soil/rock dynamics with particular emphasis on geotechnical earthquake engineering and engineering seismology. Within the broader framework of seismic site characterization, various
Authors
Stefano Parolai, Carlo G. Lai, Ilaria Dreossi, Olga-Joan Ktenidou, Alan K. Yong
Modeling the dynamics of salt marsh development in coastal land reclamation Modeling the dynamics of salt marsh development in coastal land reclamation
The valuable ecosystem services of salt marshes are spurring marsh restoration projects around the world. However, it is difficult to determine the final vegetated area based on physical drivers. Herein, we use a 3D fully coupled vegetation-hydrodynamic-morphological modeling system (COAWST), to simulate the final vegetation cover and the timescale to reach it under various forcing...
Authors
Yiyang Xu, Tarandeep S. Kalra, Neil K. Ganju, Sergio Fagherazzi
Average kinship within bighorn sheep populations is associated with connectivity, augmentation, and bottlenecks Average kinship within bighorn sheep populations is associated with connectivity, augmentation, and bottlenecks
Understanding the influence of population attributes on genetic diversity is important to advancement of biological conservation. Because bighorn sheep (Ovis canadensis) populations vary in size and management history, the species provides a unique opportunity to observe the response of average pairwise kinship, inversely related to genetic diversity, to a spectrum of natural and...
Authors
Elizabeth P Flesch, Tabitha A. Graves, Jennifer Thomson, Kelly M. Proffitt, Robert A. Garrott
Influence of offshore oil and gas structures on seascape ecological connectivity Influence of offshore oil and gas structures on seascape ecological connectivity
Offshore platforms, subsea pipelines, wells and related fixed structures supporting the oil and gas (O&G) industry are prevalent in oceans across the globe, with many approaching the end of their operational life and requiring decommissioning. Although structures can possess high ecological diversity and productivity, information on how they interact with broader ecological processes...
Authors
Dianne L McLean, Luciana C. Ferreira, Jessica A Benthuysen, Karen J. Miller, Marie-Lise Schlappy, Matthew J. Ajemian, Oliver Berry, Silvana N. R. Birchenough, Todd Bond, Fabio Boschetti, Ann S Bull, Jeremy T Claisse, Scott A Condie, Pierpaolo Consoli, Joop W. P. Coolen, Michael R. Elliott, Irene S Fortune, Ashley M Fowler, Bronwyn M Gillanders, Hugo B Harrison, Kristen Hart, Lea-Anne Henry, Chad L Hewitt, Natalie Hicks, Karlo Hock, Kieran Hyder, Milton S. Love, Peter I Macreadie, Robert J. Miller, William A Montevecchi, Mary M Nishimoto, Henry M. Page, David M Paterson, Charitha B Pattiaratchi, Gretta T Pecl, Joanne S Porter, David B. Reeves, Cynthia Riginos, Sally Rouse, Debbie J. F. Russell, Craig D. H. Sherman, Jonas Teilmann, Victoria L. G. Todd, Eric A. Treml, David H. Williamson, Michele Thums
Coupling validation effort with in situ bioacoustic data improves estimating relative activity and occupancy for multiple species with cross-species misclassifications Coupling validation effort with in situ bioacoustic data improves estimating relative activity and occupancy for multiple species with cross-species misclassifications
The increasing complexity and pace of ecological change requires natural resource managers to consider entire species assemblages. Acoustic recording units (ARUs) require minimal cost and effort to deploy and inform relative activity, or encounter rates, for multiple species simultaneously. ARU-based surveys require post-processing of the recordings via software algorithms that assign a...
Authors
Christian Stratton, Kathryn M. Irvine, Katharine M. Banner, Wilson J. Wright, Cori Lausen, Jason Rae
Atmospheric river storm flooding influences tidal marsh elevation building processes Atmospheric river storm flooding influences tidal marsh elevation building processes
Disturbances are a key component of ecological processes in coastal ecosystems. Investigating factors that affect tidal marsh accretion and elevation change is important, largely due to accelerating sea-level rise and the ecological and economic value of wetlands. Sediment accumulation rates, elevation change, and flooding were examined at five marshes along a riverine-tidal gradient in...
Authors
Karen M. Thorne, Scott Jones, Chase M. Freeman, Kevin J. Buffington, Christopher N. Janousek, Glenn R. Guntenspergen
Surface ocean warming and acidification driven by rapid carbon release precedes Paleocene-Eocene Thermal Maximum Surface ocean warming and acidification driven by rapid carbon release precedes Paleocene-Eocene Thermal Maximum
The Paleocene-Eocene Thermal Maximum (PETM) is recognized by a major negative carbon isotope (δ13C) excursion (CIE) signifying an injection of isotopically light carbon into exogenic reservoirs, the mass, source, and tempo of which continue to be debated. Evidence of a transient precursor carbon release(s) has been identified in a few localities, although it remains equivocal whether...
Authors
Tali L. Babila, Don E Penman, CD Standish, Monica Doubrawa, Tim J Bralower, Marci M. Robinson, Jean Self-Trail, Robert P. Speijer, Peter Stassen, Gavin L Foster, James C. Zachos
Salmonella enterica serovar Typhimurium from wild birds in the United States represent distinct lineages defined by bird type Salmonella enterica serovar Typhimurium from wild birds in the United States represent distinct lineages defined by bird type
Salmonella enterica serovar Typhimurium is typically considered a host generalist; however, certain isolates are associated with specific hosts and show genetic features of host adaptation. Here, we sequenced 131 S. Typhimurium isolates from wild birds collected in 30 U.S. states during 1978-2019. We found that isolates from broad taxonomic host groups including passerine birds, water...
Authors
Yezhi Fu, Nkuchia M. M’ikanatha, Jeffrey M. Lorch, David S. Blehert, Brenda M. Berlowski-Zier, Chris A. Whitehouse, Shaoting Li, Xiangyu Deng, Jared C. Smith, Nikki W. Shariat, Erin M. Nawrocki, Edward G. Dudley
Precision of headwater stream permanence estimates from a monthly water balance model in the Pacific Northwest, USA Precision of headwater stream permanence estimates from a monthly water balance model in the Pacific Northwest, USA
Stream permanence classifications (i.e., perennial, intermittent, ephemeral) are a primary consideration to determine stream regulatory status in the United States (U.S.) and are an important indicator of environmental conditions and biodiversity. However, at present, no models or products adequately describe surface water presence for regulatory determinations. We modified the...
Authors
Konrad Hafen, Kyle W. Blasch, Paul E. Gessler, Roy Sando, Alan H. Rea