Coexisting discrete bodies of rhyolite and punctuated volcanism characterize Yellowstone's post‐Lava Creek Tuff caldera evolution
Christy B Till, Jorge A. Vazquez, Mark E. Stelten, Hannah I Shamloo, Jamie S Shaffer
2019, Geochemistry, Geophysics, Geosystems (20) 3861-3881
Ion‐microprobe 206Pb/238U geochronology and trace element geochemistry of the unpolished rims and sectioned interiors of zircons from Yellowstone caldera's oldest post‐caldera lavas provide insight into the magmatic system during the prelude and aftermath of the caldera‐forming Lava Creek supereruption. The post‐caldera lavas compose the Upper Basin Member of the Plateau Rhyolite...
Inorganic nitrogen wet deposition gradients in the Denver-Boulder metropolitan area and Colorado Front Range – Preliminary implications for Rocky Mountain National Park and interpolated deposition maps
Gregory A. Wetherbee, Katherine Benedict, Sheila F. Murphy, Emily Elliott
2019, Science of the Total Environment (691) 1027-1042
For the first time in the 40-year history of the National Atmospheric Deposition Program / National Trends Network (NADP/NTN), a unique urban-to-rural transect of wet deposition monitoring stations were operated as part of the NTN in 2017 to quantify reactive inorganic nitrogen wet deposition for adjacent urban and rural, montane...
Late Miocene to Pleistocene source to sink record of exhumation and sediment routing in the Gulf of Alaska from detrital zircon fission-track and U-Pb double dating
Nathaniel Bootes, Eva Enkelmann, Richard O. Lease
2019, Tectonics (38) 2703-2726
We investigate the late Miocene‐Pleistocene offshore sedimentary record of the Yakutat microplate to evaluate the spatial and temporal variations in rock exhumation and sediment routing patterns at the heavily glaciated and actively converging plate boundary in southeast Alaska. We present 1,456 new fission track ages and 1,372...
Sharp savanna-forest transitions in the Midwest followed environmental gradients but are absent from the modern landscape
Caitlin M. Broderick, Kelly A Heilman, Tamatha Patterson, Jody Peters, Jason S. McLachlan
2019, The American Midland Naturalist (180) 1-17
Historically, closed eastern forests transitioned into open savannas and prairies in the US Midwest, but this transition is poorly understood. To investigate the eastern boundary of the prairie-forest ecotone, we conducted a case study of historic and modern vegetation patterns of the Yellow River watershed in northwest Indiana. Historic vegetation...
Channel modification and evolution alter hydraulic connectivity in the Atchafalaya River basin increasing vulnerability to sea-level rise
Daniel Kroes, Richard H. Day, Charles R. Demas, Yvonne C. Allen, Steve Roberts
2019, Conference Paper, Proceedings of SEDHYD 2019
Channel dredging and erosion in the Atchafalaya River basin have resulted in changes to the hydraulic connectivity of this floodplain swamp that have not been previously quantified. In this study, analyses were conducted to determine hydraulic and geomorphic factors that have changed since channel closure in 1962. Results indicated changes...
Hawaiian hoary bat (Lasiurus cinereus semotus) activity, diet and prey availability at the Waihou Mitigation Area, Maui
Corinna A. Pinzari, Robert W. Peck, Terry Zinn, Danielle Gross, Kristina Montoya-Aiona, Kevin W. Brinck, P. Marcos Gorresen, Frank J Bonaccorso
2019, Report
Habitat use, diet, prey availability, and foraging ecology of the endangered Hawaiian hoary bat (Lasiurus cinereus semotus, Vespertilionidae), was examined in the east Maui region inclusive of the Waihou Mitigation Area, Pu‘u Makua Restoration Area and the wind energy facility operated by Auwahi Wind Energy, LLC. The study was conducted...
Climate change adaptation for coastal national wildlife refuges
Mitchell J. Eaton, Jennifer K. Costanza, Fred A Johnson, Julien Martin, Laura Taylor
2019, Report
National Wildlife Refuges (NWRs) along the East Coast of the United States protect habitat for a host of wildlife species, while also offering storm surge protection, improving water quality, supporting nurseries for commercially important fish and shellfish, and providing recreation opportunities for coastal communities. Yet in the last century, coastal...
Refining the Baseline Sediment Budget for the Klamath River, California
Chauncey W. Anderson, Scott Wright, Liam N. Schenk, Katherine Skalak, Jennifer A. Curtis, Amy E. East, Adam J. Benthem
2019, Conference Paper, Proceedings of SEDHYD 2019
Four dams in the Klamath River Hydroelectric Project (KHP) in Oregon and California (Figure 1) are currently scheduled to be removed over a period of a few weeks or months, beginning in January 2021. The Klamath dam removal will be the largest in the world by almost all measures, and...
Optimization of salt marsh management at the Chincoteague National Wildlife Refuge, Virginia, through use of structured decision making
Hilary A. Neckles, James E. Lyons, Jessica L. Nagel, Susan C. Adamowicz, Toni Mikula, Kevin S. Holcomb
2019, Open-File Report 2019-1056
Structured decision making is a systematic, transparent process for improving the quality of complex decisions by identifying measurable management objectives and feasible management actions; predicting the potential consequences of management actions relative to the stated objectives; and selecting a course of action that maximizes the total benefit achieved and balances...
Groundwater quality and hydrology with emphasis on selenium mobilization and transport in the Lower Gunnison River Basin, Colorado, 2012–16
Judith C. Thomas, Peter B. McMahon, L. R. Arnold
2019, Scientific Investigations Report 2019-5029
Dissolved selenium is a contaminant of concern in the lower Gunnison River Basin, Colorado. Selenium is naturally present in the Cretaceous Mancos Shale and is leached to groundwater and surface water by irrigation. The groundwater on the east side of the Uncompahgre River in Delta and Montrose Counties is one...
The presence of antibiotic resistance genes in coastal soil and sediment samples from the eastern seaboard of the USA
Dale W. Griffin, William Benzel, Shawn C. Fisher, Michael J. Focazio, Luke R. Iwanowicz, Keith A. Loftin, Timothy J. Reilly, Daniel K. Jones
2019, Environmental Monitoring and Assessment (19)
Infections from antibiotic resistant microorganisms are considered to be one of the greatest global public health challenges that result in huge annual economic losses. While genes that impart resistance to antibiotics (AbR) existed long before the discovery and use of antibiotics, anthropogenic uses of antibiotics in agriculture, domesticated animals, and...
Improving pressure-limited CO2 storage capacity in saline formations by means of brine extraction
Hossein Jahediesfanjani, Steven T. Anderson, Peter D. Warwick
2019, International Journal of Greenhouse Gas Control (88) 299-310
The carbon dioxide (CO2) storage capacity of saline formations may be constrained by reservoir pressure limitations. Brine extraction could be necessary to increase the CO2 storage capacity of a given formation, manage the extent of the underground CO2 plume and induced pressure front, and control the migration direction. To estimate the additional...
Sand Creek characterization study for Oncorhynchus clarkii virginalis (Rio Grande Cutthroat Trout), Great Sand Dunes National Park and Preserve, Colorado
Ben N. Mcgee, Andrew S. Todd, Kevin K. Terry
2019, Scientific Investigations Report 2019-5061
The Oncorhynchus clarkii virginalis (Rio Grande cutthroat trout, RGCT) has undergone extensive declines in distribution and population. The RGCT is the southernmost distributed subspecies of cutthroat trout. Native to the Rio Grande Basin in Colorado and New Mexico, the subspecies is also found in the headwaters of the Pecos River...
Water resources of East Carroll Parish, Louisiana
Vincent E. White
2019, Fact Sheet 2019-3014
Information concerning the availability, use, and quality of water in East Carroll Parish, Louisiana, is critical for proper water-supply management. The purpose of this fact sheet is to present information that can be used by water managers, parish residents, and others for stewardship of this vital resource. In 2014, 39.63...
Groundwater-level change for the periods 2002–8, 2008–12, and 2008–16 in the Santa Fe Group aquifer system in the Albuquerque area, central New Mexico
Andre B. Ritchie, Amy E. Galanter, Lucas T.S. Curry
2019, Scientific Investigations Map 3435
The U.S. Geological Survey, in cooperation with the Albuquerque Bernalillo County Water Utility Authority (ABCWUA), has developed a series of maps and associated reports, beginning in 2002, that document groundwater levels in the production zone of the Santa Fe Group aquifer system beneath a large area of the City of...
Predicting attenuation of salinized surface- and groundwater-resources from legacy energy development in the Prairie Pothole Region
Todd M. Preston, Chauncey W. Anderson, Joanna N. Thamke, Blake R. Hossack, Katherine Skalak, Isabelle M. Cozzarelli
2019, Science of the Total Environment (690) 522-533
Oil and gas (energy) development in the Williston Basin, which partly underlies the Prairie Pothole Region in central North America, has helped meet U.S. energy demand for decades. Historical handling and disposal practices of saline wastewater co-produced during energy development resulted in salinization of surface and groundwater at numerous legacy...
First record of the non-indigenous parasitic copepod Neoergasilus japonicus (Harada, 1950) in the Lake Ontario Watershed: Oneida Lake, New York
Chris C. Marshall, Patrick Hudson, J. Randy Jackson, Joe K. Connolly, Jim M Watkins, Lars G. Rudstam
2019, Journal of Great Lakes Research (45) 1348-1353
Four specimens of the Asiatic parasitic copepod Neoergasilus japonicus (Harada, 1930) were collected from Oneida Lake, New York in September 2018; one specimen was from a white sucker Catostomus commersonii, another from a green sunfish Lepomis cyanellus, and two from a bluegill Lepomis macrochirus. The four adult female specimens were found attached to the base...
The major coral reefs of Maui Nui, Hawai‘i—distribution, physical characteristics, oceanographic controls, and environmental threats
Michael E. Field, Curt D. Storlazzi, Ann E. Gibbs, Nicole L. D'Antonio, Susan A. Cochran
2019, Open-File Report 2019-1019
Coral reefs are widely recognized as critical to Hawaiʻi’s economy, food resources, and protection from damaging storm waves. Yet overfishing, land-based pollution, and climate change are threatening the health and sustainability of those reefs, and accordingly, both the Federal and State governments have called for protection and effective management. In...
Satellite observations of surface deformation at the Coso Geothermal Field, California
Mariana Eneva, Andrew Barbour, David Adams, Vicky Hsiao, Kelly Blake, Giacomo Falorni, Roberto Locatelli
2019, Conference Paper, GRC Transactions
Surface deformation time series and rates are identified at the Coso Geothermal Field (CGF) and surrounding areas by applying interferometric synthetic aperture radar (InSAR) to satellite scenes from Envisat (June 2004 ̶ October 2010) and Sentinel (November 2014 – April 2018). The measurements are done in the line...
Carbon dioxide emissions and methane flux from forested wetland soils of the Great Dismal Swamp, USA
Laurel Gutenberg, K. W. Krauss, John Qu, Changwoo Ahn, Dianna M. Hogan, Zhiliang Zhu, Chenyang Xu
2019, Environmental Management (64) 190-200
The Great Dismal Swamp, a freshwater forested peatland, has accumulated massive amounts of soil carbon since the postglacial period. Logging and draining have severely altered the hydrology and forest composition, leading to drier soils, accelerated oxidation, and vulnerability to disturbance. The once dominant Atlantic white cedar, cypress, and pocosin forest...
Ten-million years of activity within the Eastern California Shear Zone from U-Pb dating of fault-zone opal
Perach Nuriel, David M. Miller, Kevin M. Schmidt, Matthew A. Coble, Kate Maher
2019, Earth and Planetary Science Letters (521) 37-45
Reconstructions of long-term fault activity are essential for understanding both the mechanisms controlling fault behavior and accurate earthquake hazard assessments. Increasing evidence for temporal variations in strain accumulation suggests non-uniform strain rates over a range of historic to geologic timescales. The paucity of long-term records of fault activity has limited...
Statistics of petroleum exploration in the world outside the United States and Canada through 2015
Emil D. Attanasi, Philip A. Freeman
2019, Circular 1450
The world’s future oil and gas supplies depend on existing reserves and the additions to those reserves that may result, in part, from ongoing exploration and new discoveries. This Circular summarizes available oil and gas exploration data for the world outside the United States and Canada (the study area) through...
Benthic foraminiferal biotic events related to the Paleocene–Eocene Thermal Maximum along the California Margin
Kristin McDougall-Reid, Cedric M John
2019, Marine Micropaleontology (150)
The faunal expression of the Paleocene-Eocene Thermal Maximum (PETM) is well documented in deep-sea sediments. However, few studies have examined continental margin sections, especially active margins. The Moreno and Lodo formations, Central California, were deposited along the eastern margin of a north-south trending forearc basin on the convergent margin of...
Estimating the pressure-limited dynamic capacity and costs of basin-scale CO2 storage in a Saline Formation
Steven T. Anderson, Hossein Jahediesfanjani
2019, International Journal of Greenhouse Gas Control (88) 156-167
Deployment of carbon capture and storage (CCS) could be necessary to be able to satisfy baseload electricity demand, maintain diversity in the energy mix, and achieve mitigation of carbon dioxide (CO2) emissions at lowest cost (IPCC, 2015; U.S. DOE, 2016). If basin-, regional- or national-scale deployment of CCS is needed, it...
Quantitative evaluation of vitrinite reflectance in shale using Raman spectroscopy and multivariate analysis
Jason S. Lupoi, Paul C. Hackley, E. Birsic, Luke P. Fritz, Logan Solotky, Amy Weislogel, Steve Schlaegle
2019, Fuel (254)
The current research builds upon a previously published study that demonstrated the combination of Raman spectroscopy coupled with multivariate analysis (MVA) for the prediction of thermal maturity in coal by evaluating the efficacy of this method for the prediction of thermal maturity in shale. MVA techniques eliminate analyst bias in...
