Subsea ice-bearing permafrost on the U.S. Beaufort Margin: 1. Minimum seaward extent defined from multichannel seismic reflection data
Laura L. Brothers, Bruce M. Herman, Patrick E. Hart, Carolyn D. Ruppel
2016, Geochemistry, Geophysics, Geosystems (17) 4354-4365
Subsea ice-bearing permafrost (IBPF) and associated gas hydrate in the Arctic have been subject to a warming climate and saline intrusion since the last transgression at the end of the Pleistocene. The consequent degradation of IBPF is potentially associated with significant degassing of dissociating gas hydrate deposits. Previous studies interpreted...
Assessment of undiscovered oil and gas resources of the Lusitanian Basin Province, Portugal, 2016
Christopher J. Schenk, Marilyn E. Tennyson, Timothy R. Klett, Thomas M. Finn, Tracey J. Mercier, Stephanie B. Gaswirth, Kristen R. Marra, Phuong A. Le, Sarah J. Hawkins, Heidi M. Leathers-Miller, Stanley T. Paxton
2016, Fact Sheet 2016-3086
Using a geology-based assessment methodology, the U.S. Geological Survey assessed mean undiscovered, technically recoverable resources of 121 million barrels of oil and 212 billion cubic feet of gas in the Lusitanian Basin Province, Portugal....
Landslides in the western Columbia Gorge, Skamania County, Washington
Thomas C. Pierson, Russell C. Evarts, Joseph A. Bard
2016, Scientific Investigations Map 3358
SummaryRecent light detection and ranging (lidar) imagery has allowed us to identify and map a large number of previously unrecognized landslides, or slides, in heavily forested terrain in the western Columbia Gorge, Skamania County, Washington, and it has revealed that the few previously recognized areas of instability are actually...
Roost site selection by ring-billed and herring gulls
Daniel E. Clark, Stephen DeStefano, Kenneth G. MacKenzie, Kiana K. G. Koenen, Jillian J. Whitney
2016, Journal of Wildlife Management (80) 708-719
Gulls (Larus spp.) commonly roost in large numbers on inland and coastal waters, yet there is little information on how or where gulls choose sites for roosting. Roost site selection can lead to water quality degradation or aviation hazards when roosts are formed on water supply reservoirs or are close...
Cretaceous–Cenozoic burial and exhumation history of the Chukchi shelf, offshore Arctic Alaska
William H. Craddock, David W. Houseknecht
2016, AAPG Bulletin (100) 63-100
Apatite fission track (AFT) and vitrinite reflectance data from five exploration wells and three seafloor cores illuminate the thermal history of the underexplored United States Chukchi shelf. On the northeastern shelf, Triassic strata in the Chevron 1 Diamond well record apatite annealing followed by cooling, possibly during the Triassic to...
Fault segmentation: New concepts from the Wasatch Fault Zone, Utah, USA
Christopher DuRoss, Stephen F. Personius, Anthony J. Crone, Susan S. Olig, Michael D. Hylland, William R. Lund, David P. Schwartz
2016, Journal of Geophysical Research B: Solid Earth (121) 1131-1157
The question of whether structural segment boundaries along multisegment normal faults such as the Wasatch fault zone (WFZ) act as persistent barriers to rupture is critical to seismic hazard analyses. We synthesized late Holocene paleoseismic data from 20 trench sites along the central WFZ to evaluate earthquake rupture length and...
Population dynamics of mallards breeding in eastern Washington
Bruce D. Dugger, John M. Coluccy, Katie M. Dugger, Trevor T. Fox, Donald K. Kraege, Mark J. Petrie
2016, Journal of Wildlife Management (80) 500-509
Variation in regional population trends for mallards breeding in the western United States indicates that additional research into factors that influence demographics could contribute to management and understanding the population demographics of mallards across North America. We estimated breeding incidence and adult female, nest, and brood survival in eastern Washington...
Atomic weights of the elements 2013 (IUPAC Technical Report)
Juris Meija, Tyler B. Coplen, Michael Berglund, Willi A. Brand, Paul De Bievre, Manfred Gröning, Norman E. Holden, Johanna Irrgeher, Robert D. Loss, Thomas Walczyk, Thomas Prohaska
2016, Pure and Applied Chemistry (88) 265-291
The biennial review of atomic-weight determinations and other cognate data has resulted in changes for the standard atomic weights of 19 elements. The standard atomic weights of four elements have been revised based on recent determinations of isotopic abundances in natural terrestrial materials:cadmium to 112.414(4) from 112.411(8),molybdenum to 95.95(1)...
Isotopic compositions of the elements 2013 (IUPAC Technical Report)
Juris Meija, Tyler B. Coplen, Michael Berglund, Willi A. Brand, Paul De Bievre, Manfred Gröning, Norman E. Holden, Johanna Irrgeher, Robert D. Loss, Thomas Walczyk, Thomas Prohaska
2016, Pure and Applied Chemistry (88) 293-306
The Commission on Isotopic Abundances and Atomic Weights (ciaaw.org) of the International Union of Pure and Applied Chemistry (iupac.org) has revised the Table of Isotopic Compositions of the Elements (TICE). The update involved a critical evaluation of the recent published literature. The new TICE 2013 includes evaluated data from the...
Spatial and temporal variability of contaminants within estuarine sediments and native Olympia oysters: A contrast between a developed and an undeveloped estuary
Elise F. Granek, Kathleen E. Conn, Elena B. Nilsen, Lori Pillsbury, Angela L. Strecker, Steve Rumrill, William Fish
2016, Science of the Total Environment (557-558) 869-879
Chemical contaminants can be introduced into estuarine and marine ecosystems from a variety of sources including wastewater, agriculture and forestry practices, point and non-point discharges, runoff from industrial, municipal, and urban lands, accidental spills, and atmospheric deposition. The diversity of potential sources contributes to the likelihood of contaminated marine waters...
Responses of two tall buildings in Tokyo, Japan, before, during, and after the M9.0 Tohoku earthquake of 11 March 2011
Mehmet Çelebi, Yoshiuaki Hisada, Roshanak Omrani, S. Farid Ghahari, Ertugrul Taciroglu
2016, Earthquake Spectra (32) 463-495
The 11 March 2011 M 9.0 Tohoku earthquake generated significant long duration shaking that propagated hundreds of kilometers from the epicenter and affected urban areas throughout much of Honshu. Recorded responses of tall buildings at several hundred km from the epicenter of the main shock and other events show tall...
A dynamic leaf gas-exchange strategy is conserved in woody plants under changing ambient CO2: evidence from carbon isotope discrimination in paleo and CO2 enrichment studies
Steven L. Voelker, J. Renee Brooks, Frederick C. Meinzer, Rebecca Anderson, Martin K.-F. Bader, Giovanna Battipaglia, Katie M. Becklin, David Beerling, Didier Bert, Julio L. Betancourt, Todd E. Dawson, Jean-Christophe Domec, Richard P. Guyette, Christian Korner, Steven W. Leavitt, Sune Linder, John D. Marshall, Manuel Mildner, Jerome Ogee, Irina P. Panyushkina, Heather J. Plumpton, Kurt S. Pregitzer, Matthias Saurer, Andrew R. Smith, Rolf T.W. Siegwolf, Michael C. Stambaugh, Alan F. Talhelm, Jacques C. Tardif, Peter K. Van De Water, Joy K. Ward, Lisa Wingate
2016, Global Change Biology (22) 889-902
Rising atmospheric [CO2], ca, is expected to affect stomatal regulation of leaf gas-exchange of woody plants, thus influencing energy fluxes as well as carbon (C), water, and nutrient cycling of forests. Researchers have proposed various strategies for stomatal regulation of leaf gas-exchange that include maintaining a constant leaf internal [CO2],...
Acid rain and its environmental effects: Recent scientific advances
Douglas A. Burns, Julian Aherne, David A. Gay, Christopher M.B. Lehmann
2016, Atmospheric Environment (146) 1-4
The term ‘acid rain’ refers to atmospheric deposition of acidic constituents that impact the earth as rain, snow, particulates, gases, and vapor. Acid rain was first recognized by Ducros (1845) and subsequently described by the English chemist Robert Angus Smith (Smith, 1852) whose pioneering studies linked the sources to industrial...
A-DROP: A predictive model for the formation of oil particle aggregates (OPAs)
Lin Zhao, Michel C. Boufadel, Xiaolong Geng, Kenneth Lee, Thomas King, Brian H. Robinson, Faith A. Fitzpatrick
2016, Marine Pollution Bulletin (106) 245-259
Oil–particle interactions play a major role in removal of free oil from the water column. We present a new conceptual–numerical model, A-DROP, to predict oil amount trapped in oil–particle aggregates. A new conceptual formulation of oil–particle coagulation efficiency is introduced to account for the effects of oil stabilization by particles,...
Nitrate removal from agricultural drainage ditch sediments with amendments of organic carbon: Potential for an innovative best management practice
Derek R. Faust, Robert Kröger, Leandro E. Miranda, Scott A. Rush
2016, Water, Air, & Soil Pollution (227)
Agricultural fertilizer applications have resulted in loading of nutrients to agricultural drainage ditches in the Lower Mississippi Alluvial Valley. The purpose of this study was to determine effects of dissolved organic carbon (DOC) and particulate organic carbon (POC) amendments on nitrate-nitrogen (NO3−-N) removal from overlying water, pore water, and sediment...
Deposition, accumulation, and alteration of Cl−, NO3−, ClO4− and ClO3− salts in a hyper-arid polar environment: Mass balance and isotopic constraints
Andrew Jackson, Alfonso F. Davila, John Karl Böhlke, Neil C. Sturchio, Ritesh Sevanthi, Nubia Estrada, Maeghan Brundrett, Denis Lacelle, Christopher P. McKay, Armen Poghosyan, Wayne Pollard, Kris Zacny
2016, Geochimica et Cosmochimica Acta (182) 197-215
The salt fraction in permafrost soils/sediments of the McMurdo Dry Valleys (MDV) of Antarctica can be used as a proxy for cold desert geochemical processes and paleoclimate reconstruction. Previous analyses of the salt fraction in MDV permafrost soils have largely been conducted in coastal regions where permafrost soils are variably...
Responses of a tall building with U.S. code-type instrumentation in Tokyo, Japan, to events before, during and after the Tohoku earthquake of 11 March 2011
Mehmet Çelebi, Toshihide Kashima, S. Farid Ghahari, Fariba Abazarsa, Ertugrul Taciroglu
2016, Earthquake Spectra (32) 497-522
The 11 March 2011 M 9.0 Tohoku earthquake generated long-duration shaking that propagated hundreds of kilometers from the epicenter and affected tall buildings in urban areas several hundred kilometers from the epicenter of the main shock. Recorded responses show that tall buildings were affected by long-period motions. This study presents...
Bounded fractional diffusion in geological media: Definition and Lagrangian approximation
Yong Zhang, Christopher T. Green, Eric M. LaBolle, Roseanna M. Neupauer, Hong-Guang Sun
2016, Water Resources Research (52) 8561-8577
Spatiotemporal Fractional-Derivative Models (FDMs) have been increasingly used to simulate non-Fickian diffusion, but methods have not been available to define boundary conditions for FDMs in bounded domains. This study defines boundary conditions and then develops a Lagrangian solver to approximate bounded, one-dimensional fractional diffusion. Both the zero-value and non-zero-value Dirichlet,...
The automated reference toolset: A soil-geomorphic ecological potential matching algorithm
Travis W. Nauman, Michael C. Duniway
2016, Soil Science Society of America Journal (80) 1317-1328
Ecological inventory and monitoring data need referential context for interpretation. Identification of appropriate reference areas of similar ecological potential for site comparison is demonstrated using a newly developed automated reference toolset (ART). Foundational to identification of reference areas was a soil map of particle size in the control section (PSCS),...
Characterization of sediment and measurement of groundwater levels and temperatures, Camas National Wildlife Refuge, eastern Idaho
Brian V. Twining, Gordon W. Rattray
2016, Data Series 1024
The Camas National Wildlife Refuge (Refuge) in eastern Idaho, established in 1937, contains wetlands, ponds, and wet meadows that are essential resting and feeding habitat for migratory birds and nesting habitat for waterfowl. Initially, natural sources of water supported these habitats. However, during the past few decades, climate change...
Introduction to the special issue on the 25 April 2015 Mw 7.8 Gorkha(Nepal) earthquake
Gavin P. Hayes, Richard W. Briggs
2016, Tectonophysics (714-715) 1-3
On April 25, 2015, a moment magnitude (Mw) 7.8 earthquake struck central Nepal, breaking a section of the broader Himalayan Front that had been largely quiescent in moderate-to-large earthquakes for much of the modern seismological era. Ground shaking associated with the event resulted in a broad distribution of triggered...
Light Goose Conservation Order effects on nontarget waterfowl behavior and energy expenditure
Andrew J. Dinges, Elisabeth B. Webb, Mark P. Vrtiska
2016, Wildlife Society Bulletin (40) 694-704
When the Light Goose Conservation Order (LGCO) was established during 1999 in the Rainwater Basin of Nebraska, USA, LGCO activities were limited to 4 days/week and 16 public wetlands were closed to the LGCO to limit disturbance to nontarget waterfowl during this energetically important time period. However, the effects of...
Exploiting differential vegetation phenology for satellite-based mapping of semiarid grass vegetation in the southwestern United States and northern Mexico
Dennis G. Dye, Barry R. Middleton, John M. Vogel, Zhuoting Wu, Miguel G. Velasco
2016, Remote Sensing (8) 1-33
We developed and evaluated a methodology for subpixel discrimination and large-area mapping of the perennial warm-season (C4) grass component of vegetation cover in mixed-composition landscapes of the southwestern United States and northern Mexico. We describe the methodology within a general, conceptual framework that we identify as the differential vegetation phenology...
Carbon dioxide fluxes reflect plant zonation and belowground biomass in a coastal marsh
Serena Moseman-Valtierra, Omar I. Abdul-Aziz, Jianwu Tang, Khandker S. Ishtiaq, Kate Morkeski, Jordan Mora, Ryan K. Quinn, Rose M. Martin, Katharine Egan, Elizabeth Q. Brannon, Joanna C. Carey, Kevin D. Kroeger
2016, Ecosphere (7) 1-21
Coastal wetlands are major global carbon sinks; however, they are heterogeneous and dynamic ecosystems. To characterize spatial and temporal variability in a New England salt marsh, greenhouse gas (GHG) fluxes were compared among major plant‐defined zones during growing seasons. Carbon dioxide (CO2) and methane (CH4) fluxes were compared in two...
Determination of eruption temperature of Io's lavas using lava tube skylights
Ashley G. Davies, Laszlo P. Keszthelyi, Alfred S. McEwen
2016, Icarus (278) 266-278
Determining the eruption temperature of Io's dominant silicate lavas would constrain Io's present interior state and composition. We have examined how eruption temperature can be estimated at lava tube skylights through synthesis of thermal emission from the incandescent lava flowing within the lava tube. Lava tube skylights should be present...
