Responses of the odd couple Carquinez, CA, suspension bridge during the Mw6.0 south Napa earthquake of August 24, 2014
Mehmet Celebi, S. Farid Ghahari, Ertugrul Taciroglu
2019, Journal of Civil Structural Health Monitoring (9) 719-739
The behavior of the suspension bridge in Carquinez, CA, during the Mw6.0 24 August 2014 South Napa, CA earthquake is studied. Utilizing data from an extensive array of accelerometers that recorded the earthquake-excited motions, dynamic characteristics such as modes, corresponding frequencies and damping are identified and...
Study design and methods for a wetland condition assessment on U.S. Fish and Wildlife Service fee-title lands in the Prairie Pothole Region of North Dakota, South Dakota, and Montana, USA
Brian Tangen, Sheel Bansal, Rachel R. Fern, Edward S. DeKeyser, Christina L. M. Hargiss, David M. Mushet, Cami S. Dixon
2019, Open-File Report 2019-1118
The U.S. Fish and Wildlife Service (FWS) manages wetlands and grasslands for wildlife habitat throughout the central North American Prairie Pothole Region (PPR). PPR wetlands, or potholes, are widely recognized as critical habitats for North American migratory waterfowl, waterbirds, and other wildlife. Potholes also provide other ecosystem services such as...
Precision mapping of snail habitat provides a powerful indicator of human schistosomiasis transmission
Chelsea L. Wood, Susanne H. Sokolow, Isabel J. Jones, Andrew J Chamberlin, Kevin D. Lafferty, Armand M. Kuris, Merlijn M. T. Jocque, Skylar R. Hopkins, Grant Adams, Julia C Buck, Andrea J Lund, Ana E Garcia-Vedrenne, Evan Fiorenza, Jason R. Rohr, Fiona Allan, Bonnie Webster, Muriel Rabone, Joanne P Webster, Lydie Bandagny, Raphael Ndione, Simon Senghor, Anne-Marie Schacht, Nicolas Jouanard, Gilles Riveau, Giulio A. De Leo
2019, PNAS (449) 23182-23191
Recently, the World Health Organization recognized that efforts to interrupt schistosomiasis transmission through mass drug administration have been ineffective in some regions; one of their new recommended strategies for global schistosomiasis control emphasizes targeting the freshwater snails that transmit schistosome parasites. We sought to identify robust indicators that would enable...
Status of three-dimensional geological mapping and modeling activities in the U.S. Geological Survey
Donald S. Sweetkind, Russell Graymer, D.K. Higley, Oliver S. Boyd
2019, Report, AER/AGS Special Report 112
The U.S. Geological Survey (USGS), created in 1879, is the national geological survey for the United States and the sole science agency within its cabinet-level bureau, the Department of the Interior. The USGS has a broad mission, including: serving the Nation by providing reliable scientific information to describe and understand the Earth; minimize...
Impact of down-dip rupture limit and high stress drop subevents on coseismic land-level change during Cascadia megathrust earthquakes
Erin A. Wirth, Arthur D. Frankel
2019, Geophysical Research Letters (109) 2187-2197
Seismic hazard associated with Cascadia megathrust earthquakes is strongly dependent on the landward rupture extent and heterogeneous fault properties. We use 3-D numerical simulations and a seismic velocity model for Cascadia to estimate coseismic deformation due to ~M9 earthquake scenarios. Our earthquake source model is based on observations of the...
Exploring trends in wet-season precipitation and drought indices in wet, humid and dry regions
Chris Funk, Laura Harrison, Lisa Alexander, Pete Peterson, Ali Behrangi, Gregory Husak
2019, Environmental Research Letters (14)
This study examines wet season droughts using eight products from the FROGS database. The study begins by evaluating wet season precipitation totals and wet day counts at seasonal and decadal time scales. While we find a high level of agreement among the products at a seasonal timescale, evaluations of 10-year...
Targeting wildlife crime interventions through geographic profiling
Stephanie Romanach, Sally C. Faulkner, Michael C.A. Stevens, Peter A. Lindsey, Steven C. Le Comber
2019, Report
Seeing an animal hanging lifelessly from a snare is a heart-wrenching experience. Knowing that most animals caught in snares are left to rot without being used for meat or any other purpose might be worse. Over an eight-year period, 2001–2009, we recorded 10,231 incidents of illegal hunting in a wildlife...
Quantitative guidance for efficient vertical flow measurements at the sediment-water interface using temperature-depth profiles
D. Irvine, B. Kurylyk, Martin A. Briggs
2019, Hydrological Processes (34) 649-661
Upward discharge to surface water bodies can be quantified using analytical models based on temperature-depth (T-z) profiles. The use of sediment T-z profiles is attractive as discharge estimates can be obtained using point-in-time data that are collected inexpensively and rapidly. Previous studies have identified that T-z methods can only be...
Geologic map of the Ferncliff and Louisa quadrangles, Louisa, Fluvanna, and Goochland Counties, Virginia
William C. Burton, Richard W. Harrison, Helen F. Malenda, Frank J. Pazzaglia, E. Allen Crider, Jr.
2019, Scientific Investigations Map 3429
The area encompassed by the geologic map of the Ferncliff and Louisa, Va., 7.5-minute quadrangles includes the hypothetical surface projection of the Quail fault, which is the subsurface fault that was responsible for the 2011 magnitude 5.8 (M5.8) Mineral, Va., earthquake. The mapping shows that the Quail fault appears to...
Tropical cyclones alter short-term activity patterns of a coastal seabird
B. P. Wilkinson, Y. G. Satge, J. S. Lamb, Patrick G.R. Jodice
2019, Movement Ecology (7)
BackgroundMobile organisms in marine environments are expected to modify their behavior in response to external stressors. Among environmental drivers of animal movement are long-term climatic indices influencing organism distribution and short-term meteorological events anticipated to alter acute movement behavior. However, few studies exist documenting the response of vagile...
Relationships between soil macroinvertebrates and nonnative feral pigs (Sus scrofa) in Hawaiian tropical montane wet forests
Nathaniel H. Wehr, Creighton M Litton, Noa K Lincoln, Steve C. Hess
2019, Biological Invasions (22) 577-586
Nonnative feral pigs (Sus scrofa) are recognized throughout the New World as a highly significant introduced species in terms of ecosystem alteration. Similarly, nonnative soil macroinvertebrates (e.g. earthworms, ground beetles) invade and alter the structure and function of native habitats globally. However, the relationship between feral pigs and soil macroinvertebrates...
Coastal armoring and sea turtles: Beachfront homeowners’ opinions and intent
Melissa K. Hill, Martha C. Monroe, Raymond Carthy, Thomas T. Ankersen, Tom A. Kay
2019, Coastal Management (47) 594-610
Florida’s dynamic beach-dune ecosystem and the structures built along the shore face threats from coastal (or shoreline) erosion, sea level rise, and inadequate regulatory protection efforts. In light of these threats, private property owners are choosing to install coastal armoring on their property to protect upland structures which can negatively...
Gray Wolf (Canis lupus) recolonization failure: A Minnesota case study
L. David Mech, Forest Isbell, Jim Krueger, John Harte
2019, Canadian Field-Naturalist (133) 60-65
During the past few decades, Gray Wolves (Canis lupus) have recolonized many areas in the United States and Europe. In many other cases, however, although dispersing wolves reached areas with adequate prey, a population failed to recolonize. Herein, we provide a case study detailing how a wolf pack attempted for...
Sources, fate, and flux of geothermal solutes in the Yellowstone and Gardner Rivers, Yellowstone National Park, WY
R. Blaine McCleskey, David A. Roth, D. Mahony, D. Kirk Nordstrom, Stacy Kinsey
2019, Applied Geochemistry (111) 1-14
The total discharge and thermal output from the numerous hydrothermal features in Yellowstone National Park (YNP) can be estimated from the chloride (Cl) flux in the Madison, Yellowstone, Falls, and Snake Rivers. Monitoring the Cl flux in these four major rivers provides a holistic view of the hydrothermal output from...
Three-dimensional geologic map of the southern Carson Sink, Nevada, including the Fallon FORGE area
Drew L. Siler, James E. Faulds, Jonathan M.G. Glen, Nicholas H. Hinz, Jeffrey B. Witter, Kelly Blake, John Queen, Mark Fortuna
2019, Scientific Investigations Map 3437
The three-dimensional (3–D) geologic map characterizes the subsurface in the southern Carson Sink region. We created the 3–D map by integrating the results from seismic-reflection, potential-field-geophysical, and lithologic well-logging investigations completed in and around the Fallon FORGE site as part of the U.S. Department of Energy Frontier Observatory for Research...
Oyster reefs in northern Gulf of Mexico estuaries harbor diverse fish and decapod crustacean assemblages: A meta-synthesis
Megan K. LaPeyre, Danielle Aguilar Marshall, Lindsay Miller, Austin T. Humphries
2019, Frontiers in Marine Science (6)
Oyster reefs provide habitat for numerous fish and decapod crustacean species that mediate ecosystem functioning and support vibrant fisheries. Recent focus on the restoration of eastern oyster (Crassostrea virginica) reefs stems from this role as a critical ecosystem engineer. Within the shallow estuaries of the northern Gulf of Mexico (nGoM), the...
Genetic structure of Mycoplasma ovipneumoniae informs pathogen spillover dynamics between domestic and wild Caprinae in the western United States
Pauline Kamath, K.R. Manlove, E. Frances Cassirer, Paul C. Cross, T. E. Besser
2019, Scientific Reports (9)
Spillover diseases have significant consequences for human and animal health, as well as wildlife conservation. We examined spillover and transmission of the pneumonia-associated bacterium Mycoplasma ovipneumoniae in domestic sheep, domestic goats, bighorn sheep, and mountain goats across the western United States using 594 isolates, collected from 1984 to...
Testing theoretical metapopulation conditions with genotypic data from Boreal Chorus Frogs (Pseudacris maculata)
S. M. Billerman, B. R. Jesmer, A. G. Watts, P. Schlichting, M. Fortin, W. C. Funk, P. Hapeman, Erin L. Muths, M. Murphy
2019, Canadian Journal of Zoology (97) 1042-1053
The metapopulation concept has far-reaching implications in ecology and conservation biology. Hanski’s criteria operationally define metapopulations, yet testing them is hindered by logistical and financial constraints inherent to the collection of long-term demographic data. Hence, ecologists and conservationists often assume metapopulation existence for dispersal-limited species that occupy patchy habitats. To...
1200 years of Upper Missouri River streamflow reconstructed from tree rings
Justin T. Martin, Gregory T. Pederson, Connie A. Woodhouse, Edward R Cook, Gregory J. McCabe, Erika K. Wise, Patrick Erger, Larry Dolan, Marketa McGuire, Subhrendu Gangopadhyay, Katherine J. Chase, Jeremy Littell, Stephen Gray, Scott St. George, Jonathan M. Friedman, David J. Sauchyn, Jannine St. Jacques, John W. King
2019, Quaternary Science Reviews (224)
Paleohydrologic records can provide unique, long-term perspectives on streamflow variability and hydroclimate for use in water resource planning. Such long-term records can also play a key role in placing both present day events and projected future conditions into a broader context than that offered by instrumental observations. However,...
Seasonality of climatic drivers of flood variability in the conterminous United States
Jesse E. Dickinson, Tessa M. Harden, Gregory J. McCabe
2019, Scientific Reports (9)
Flood variability due to changes in climate is a major economic and social concern. Climate drivers can affect the amount and distribution of flood-generating precipitation through seasonal shifts in storm tracks. An understanding of how the drivers may change in the future is critical for identifying the regions where the...
Modeling groundwater nitrate exposure in private wells of North Carolina for the Agricultural Health Study
Kyle P Messier, David C Wheeler, Abigail R Flory, Rena R Jones, Deven Patel, Bernard T. Nolan, Mary H Ward
2019, Science of the Total Environment (655) 512-519
Unregulated private wells in the United States are susceptible to many groundwater contaminants. Ingestion of nitrate, the most common anthropogenic private well contaminant in the United States, can lead to the endogenous formation of N-nitroso-compounds, which are known human carcinogens. In this study, we...
Fossil tabulate corals reveal outcrops of Paleozoic sandstones in the Atlantic Coastal Plain Province, Southeastern USA
James E. Landmeyer, Francis Tourneur, Julien Denayer, Mikolaj K Zapalski
2019, PLoS ONE (14)
The geologic history of the Southeastern United States of America is missing nearly 350-million-years of rocks, sediments, and fossils. This gap defines the Fall Line nonconformity where Upper Ordovician consolidated rocks are directly overlain by Upper Cretaceous unconsolidated sediments of the Atlantic Coastal Plain Province. Here we begin to fill...
Quantifying the eroded and deposited mass of mercury-contaminated sediment by using terrestrial laser scanning at the confluence of Humbug Creek and the South Yuba River, Nevada County, California, 2011–13
James F. Howle, Charles N. Alpers, Jeffrey Kitchen, Gerald W. Bawden, Sandra Bond
2019, Scientific Investigations Report 2019-5104
High-resolution, terrestrial laser scanning, also known as ground-based lidar (light detection and ranging), was used to quantify the volume of mercury-contaminated sediment eroded from an outcrop of historical placer-mining debris at the confluence of Humbug Creek and the South Yuba River in the Sierra Nevada foothills, about 17 kilometers northeast...
Comparison of groundwater-model construction methods, representations of glacial geology, model designs, and groundwater-model flow simulations within Elkhart County, Indiana
Leslie D. Arihood, David C. Lampe, E. Randall Bayless, Steven E. Brown
2019, Scientific Investigations Report 2019-5088
Automated data-processing methods allow hydrologists to efficiently incorporate digital well-record datasets into the construction of hydrostratigraphic frameworks for groundwater-flow models. The method selected to construct the hydrostratigraphic framework can affect the extent of geologic heterogeneity that can be included in the model. The detail generated from a hydrostratigraphic framework can...
Hydrodynamic and morphologic response of a back-barrier estuary to an extratropical storm
Zafer Defne, Neil K. Ganju, Julia M. Moriarty
2019, Journal of Geophysical Research: Oceans (124) 7700-7717
We investigated the hydrodynamic and morphologic response of Barnegat Bay-Little Egg Harbor, New Jersey, USA to Hurricane Sandy. We implemented a three-dimensional, coupled ocean-wave-sediment transport model of the estuary and explored the role of offshore water levels, offshore waves, local winds and waves by systematically removing forcings from a series...
