Geologic framework and evidence for neotectonism in the epicentral area of the 2011 Mineral, Virginia, earthquake
William C. Burton, Richard W. Harrison, David B. Spears, Nicholas H. Evans, Shannon A. Mahan
2015, GSA Special Papers (509) 345-376
The epicenters of the main shock and associated aftershocks of the 2011 moment magnitude, Mw 5.8 Mineral, Virginia (USA), earthquake, and the updip projection of the possible fault plane that triggered the quakes, are contained in the areas of 2 adjoining 7.5′ quadrangles in the central Virginia Piedmont. These quadrangles...
On-line hydrogen-isotope measurements of organic samples using elemental chromium: An extension for high temperature elemental-analyzer techniques
Matthias Gehre, Julian Renpenning, Tetyana Gilevska, Haiping Qi, Tyler B. Coplen, Harro A.J. Meijer, Willi A. Brand, Arndt Schimmelmann
2015, Analytical Chemistry (87) 5198-5205
The high temperature conversion (HTC) technique using an elemental analyzer with a glassy carbon tube and filling (temperature conversion/elemental analysis, TC/EA) is a widely used method for hydrogen isotopic analysis of water and many solid and liquid organic samples with analysis by isotope-ratio mass spectrometry (IRMS). However, the TC/EA IRMS...
Kinematics of shallow backthrusts in the Seattle fault zone, Washington State
Thomas L. Pratt, K.G. Troost, Jackson K. Odum, William J. Stephenson
2015, Geosphere (11) 1948-1974
Near-surface thrust fault splays and antithetic backthrusts at the tips of major thrust fault systems can distribute slip across multiple shallow fault strands, complicating earthquake hazard analyses based on studies of surface faulting. The shallow expression of the fault strands forming the Seattle fault zone of Washington State shows the...
Determination of (4-methylcyclohexyl)methanol isomers by heated purge-and-trap GC/MS in water samples from the 2014 Elk River, West Virginia, chemical spill
William T. Foreman, Donna L. Rose, Douglas B. Chambers, Angela S. Crain, Lucinda K. Murtagh, Haresh Thakellapalli, Kung K. Wang
2015, Chemosphere (131) 217-224
A heated purge-and-trap gas chromatography/mass spectrometry method was used to determine the cis- and trans-isomers of (4-methylcyclohexyl)methanol (4-MCHM), the reported major component of the Crude MCHM/Dowanol™ PPh glycol ether material spilled into the Elk River upriver from Charleston, West Virginia, on January 9, 2014. The trans-isomer eluted first and method...
Using chromate to investigate the impact of natural organics on the surface reactivity of nanoparticulate magnetite
Andrew L. Swindle, Isabelle M. Cozzarelli, Andrew S. Elwood Madden
2015, Environmental Science & Technology (49) 2156-2162
Chromate was used as a chemical probe to investigate the size-dependent influence of organics on nanoparticle surface reactivity. Magnetite–chromate sorption experiments were conducted with ∼90 and ∼6 nm magnetite nanoparticles in the presence and absence of fulvic acid (FA), natural organic matter (NOM), and isolated landfill leachate (LL). Results indicated...
An ignimbrite caldera from the bottom up: Exhumed floor and fill of the resurgent Bonanza caldera, Southern Rocky Mountain volcanic field, Colorado
Peter W. Lipman, Matthew J. Zimmerer, William C. McIntosh
2015, Geosphere (11) 1902-1947
Among large ignimbrites, the Bonanza Tuff and its source caldera in the Southern Rocky Mountain volcanic field display diverse depositional and structural features that provide special insights concerning eruptive processes and caldera development. In contrast to the nested loci for successive ignimbrite eruptions at many large multicyclic calderas elsewhere, Bonanza...
Reticulite‐producing fountains from ring fractures in Kīlauea Caldera ca. 1500 CE
Michael May, Rebecca J. Carey, Don Swanson, Bruce F. Houghton
Rebecca Carey, Valerie Cayol, Michael P. Poland, Dominique Weis, editor(s)
2015, Book chapter, Hawaiian volcanoes: From source to surface
A widely dispersed reticulite bed occurs close to the base of the Keanakākoʻi Tephra at Kīlauea Volcano. It can be divided into six subunits in the northern sector of the volcano; the reticulite also occurs in the southern sector, but outcrops are sparse owing to penecontemporaneous erosion and burial. Multilobate isopachs for...
Validation of geometric accuracy of Global Land Survey (GLS) 2000 data
Rajagopalan Rengarajan, Aparajithan Sampath, James C. Storey, Mike Choate
2015, Photogrammetric Engineering and Remote Sensing (2) 131-141
The Global Land Survey (GLS) 2000 data were generated from Geocover™ 2000 data with the aim of producing a global data set of accuracy better than 25 m Root Mean Square Error (RMSE). An assessment and validation of accuracy of GLS 2000 data set, and its co-registration with Geocover™ 2000...
Automated integration of lidar into the LANDFIRE product suite
Birgit Peterson, Kurtis Nelson, Carl Seielstad, Jason M. Stoker, W. Matt Jolly, Russell Parsons
2015, Remote Sensing Letters (6) 247-256
Accurate information about three-dimensional canopy structure and wildland fuel across the landscape is necessary for fire behaviour modelling system predictions. Remotely sensed data are invaluable for assessing these canopy characteristics over large areas; lidar data, in particular, are uniquely suited for quantifying three-dimensional canopy structure. Although lidar data are increasingly...
Beyond temperature: Clumped isotope signatures in dissolved inorganic carbon species and the influence of solution chemistry on carbonate mineral composition
Aradhna K. Tripati, Pamela S. Hill, Robert A. Eagle, Jed L. Mosenfelder, Jianwu Tang, Edwin A. Schauble, John M. Eiler, Richard E. Zeebe, Joji Uchikawa, Tyler B. Coplen, Justin B. Ries, Drew Henry
2015, Geochimica et Cosmochimica Acta (166) 344-371
“Clumped-isotope” thermometry is an emerging tool to probe the temperature history of surface and subsurface environments based on measurements of the proportion of 13C and 18O isotopes bound to each other within carbonate minerals in 13C18O16O22- groups (heavy isotope “clumps”). Although most clumped isotope geothermometry implicitly presumes carbonate crystals have attained...
Assessing the vegetation condition impacts of the 2011 drought across the U.S. southern Great Plains using the vegetation drought response index (VegDRI)
Tsegaye Tadesse, Brian D. Wardlow, Jesslyn F. Brown, Mark Svoboda, Michael Hayes, Brian Fuchs, Denise Gutzmer
2015, Journal of Applied Meteorology and Climatology (54) 153-169
The vegetation drought response index (VegDRI), which combines traditional climate- and satellite-based approaches for assessing vegetation conditions, offers new insights into assessing the impacts of drought from local to regional scales. In 2011, the U.S. southern Great Plains, which includes Texas, Oklahoma, and New Mexico, was plagued by moderate to...
Onset of a basaltic explosive eruption from Kīlauea’s summit in 2008
Rebecca J. Carey, Lauren Swavely, Don Swanson, Bruce F. Houghton, Tim R. Orr, Tamar Elias, Andrew Sutton
Rebecca Carey, Valerie Cayol, Michael P. Poland, Dominique Weis, editor(s)
2015, Book chapter, Hawaiian volcanoes: From source to surface
The onset of a basaltic eruption at the summit of Kīlauea volcano in 2008 is recorded in the products generated during the first three weeks of the eruption and suggests an evolution of both the physical properties of the magma and also lava lake levels and vent wall stability. Ash...
Stratigraphic and microfossil evidence for a 4500-year history of Cascadia subduction zone earthquakes and tsunamis at Yaquina River estuary, Oregon, USA
Nicholas A Graehl, Harvey M. Kelsey, Robert C. Witter, Eileen Hemphill-Haley, Simon E. Engelhart
2015, GSA Bulletin (127) 211-226
The Sallys Bend swamp and marsh area on the central Oregon coast onshore of the Cascadia subduction zone contains a sequence of buried coastal wetland soils that extends back ∼4500 yr B.P. The upper 10 of the 12 soils are represented in multiple cores. Each soil is abruptly overlain...
Tornadic storm avoidance behavior in breeding songbirds
Henry M. Streby, Gunnar R. Kramer, Sean M. Peterson, Justin A. Lehman, David A. Buehler, David E. Andersen
2015, Current Biology (25) 98-102
Migration is a common behavior used by animals of many taxa to occupy different habitats during different periods. Migrant birds are categorized as either facultative (i.e., those that are forced to migrate by some proximal cue, often weather) or obligate (i.e., those that migrate on a regular cycle). During migration,...
Predicted changes in climatic niche and climate refugia of conservation priority salamander species in the northeastern United States
William B. Sutton, Kyle Barrett, Allison T. Moody, Cynthia S. Loftin, Phillip G. deMaynadier, Priya Nanjappa
2015, Forests (6) 1-26
Global climate change represents one of the most extensive and pervasive threats to wildlife populations. Amphibians, specifically salamanders, are particularly susceptible to the effects of changing climates due to their restrictive physiological requirements and low vagility; however, little is known about which landscapes and species are vulnerable to climate change....
Lithobates sylvaticus (wood frog). Habitat use.
Luke A. Groff, Aram J.K. Calhoun, Cynthia S. Loftin
2015, Herpetological Review (46) 234-234
Lithobates sylvaticus is the second most widely distributed anuran in North America (Martof and Humphries 1959. Am. Midl. Nat. 61:350–389), and its habitat use reflects the environmental variation that exists across its geographic range (Semlitsch et al. 2009. BioScience 59:853–862). Although L. sylvaticus post-breeding habitat selection has been described in...
Drought monitoring and assessment: Remote sensing and modeling approaches for the Famine Early Warning Systems Network
Gabriel B. Senay, Naga Manohar Velpuri, Stefanie Bohms, Michael Budde, Claudia Young, James Rowland, James Verdin
2015, Book chapter
Drought monitoring is an essential component of drought risk management. It is usually carried out using drought indices/indicators that are continuous functions of rainfall and other hydrometeorological variables. This chapter presents a few examples of how remote sensing and hydrologic modeling techniques are being used to generate a suite of...
Structural superposition in fault systems bounding Santa Clara Valley, California
Russell W. Graymer, Richard G. Stanley, David A. Ponce, Robert C. Jachens, Robert W. Simpson, Carl M. Wentworth
2015, Geosphere (11) 63-75
Santa Clara Valley is bounded on the southwest and northeast by active strike-slip and reverse-oblique faults of the San Andreas fault system. On both sides of the valley, these faults are superposed on older normal and/or right-lateral normal oblique faults. The older faults comprised early components of the San Andreas...
Status assessment of the Endangered snow leopard Panthera uncia and other large mammals in the Kyrgyz Alay, using community knowledge corrected for imperfect detection
Julia Taubmann, Koustubh Sharma, Kubanychbek Zhumabai Uulu, James E. Hines, Charudutt Mishra
2015, Oryx (50) 220-230
The Endangered snow leopard Panthera uncia occurs in the Central Asian Mountains, which cover c. 2 million km2. Little is known about its status in the Kyrgyz Alay Mountains, a relatively narrow stretch of habitat connecting the southern and northern...
Day-roost tree selection by northern long-eared bats—What do non-roost tree comparisons and one year of data really tell us?
Alexander Silvis, W. Mark Ford, Eric R. Britzke
2015, Global Ecology and Conservation (3) 756-763
Bat day-roost selection often is described through comparisons of day-roosts with randomly selected, and assumed unused, trees. Relatively few studies, however, look at patterns of multi-year selection or compare day-roosts used across years. We explored day-roost selection using 2 years of roost selection data for female northern long-eared bats (Myotis...
A methodology for quantifying and mapping ecosystem services provided by watersheds
Amy M. Villamagna, Paul L. Angermeier
2015, Book chapter, Ecosystem services and river basin ecohydrology
Watershed processes – physical, chemical, and biological – are the foundation for many benefits that ecosystems provide for human societies. A crucial step toward accurately representing those benefits, so they can ultimately inform decisions about land and water management, is the development of a coherent methodology that can translate available...
Angler satisfaction in South Dakota
Kjetil R. Henderson, Larry M. Gigliotti
2015, Proceedings of the South Dakota Academy of Science (94) 171-186
Many industries use satisfaction measures to evaluate performance. The South Dakota Department of Game, Fish and Parks identified satisfaction as one of their performance measures for evaluating fishing in South Dakota. In fisheries management, the perspectives’ of license buyers are valuable to determine if management activities are providing the benefits...
Projecting the spatiotemporal carbon dynamics of the Greater Yellowstone Ecosystem from 2006 to 2050
Shengli Huang, Shuguang Liu, Jinxun Liu, Devendra Dahal, Claudia Young, Brian Davis, Terry L. Sohl, Todd Hawbaker, Benjamin M. Sleeter, Zhiliang Zhu
2015, Carbon Balance and Management (10)
BackgroundClimate change and the concurrent change in wildfire events and land use comprehensively affect carbon dynamics in both spatial and temporal dimensions. The purpose of this study was to project the spatial and temporal aspects of carbon storage in the Greater Yellowstone Ecosystem (GYE) under...
Radio-transmitters have no impact on survival of pre-fledged American Woodcocks
Kyle O. Daly, David E. Andersen, Wayne L. Brininger, Thomas R. Cooper
2015, Journal of Field Ornithology (86) 345-351
American Woodcocks (Scolopax minor) are a high priority species of conservation need across most of their breeding range due to long-term population declines. Survival of juveniles may be key to understanding these population declines, but there have been few direct estimates of juvenile woodcock survival rates, and no recent assessment...
Processes limiting depth of arroyo incision: Examples from the Rio Puerco, New Mexico
Eleanor R. Griffin, Jonathan M. Friedman
2015, Conference Paper, Proceedings of the 5th Federal Interagency Hydrologic Modeling Conference and the 10th Federal Interagency Sedimentation Conference
We examined channel flow and suspended sediment transport processes within the lower Rio Puerco arroyo, located in semi-arid north-central New Mexico, in an attempt to answer the question: Why did arroyo incision stop by about 1936? Channel flow model results show that in the narrow, incised channel of 1936, the...
