Predicting Impacts of tropical cyclones and sea-Level rise on beach mouse habitat
Q. Chen, Hongqing Wang, Lixia Wang, Robert Tawes, Drew Rollman
2014, Journal of Coastal Research (68) 12-19
Alabama beach mouse (ABM) (Peromyscus polionotus ammobates) is an important component of the coastal dune ecosystem along the Gulf of Mexico. Due to habitat loss and degradation, ABM is federally listed as an endangered species. In this study, we examined the impacts of storm surge and wind waves, which are...
Modeling the hydrogeophysical response of lake talik evolution
Burke J. Minsley, Tristan Wellman, Michelle Ann Walvoord, Andre Revil
2014, Conference Paper, SEG Technical Program Expanded Abstracts 2014
Geophysical methods provide valuable information about subsurface permafrost and its relation to dynamic hydrologic systems. Airborne electromagnetic data from interior Alaska are used to map the distribution of permafrost, geological features, surface water, and groundwater. To validate and gain further insight into these field datasets, we also explore the geophysical...
Continuous water-quality and suspended-sediment transport monitoring in the San Francisco Bay, California, water years 2011–13
Paul A. Buchanan, Maureen A. Downing-Kunz, David H. Schoellhamer, Gregory Shellenbarger, Kurt Weidich
2014, Fact Sheet 2014-3090
The U.S. Geological Survey (USGS) monitors water quality and suspended-sediment transport in the San Francisco Bay. The San Francisco Bay area is home to millions of people, and the bay teems with both resident and migratory wildlife, plants, and fish. Fresh water mixes with salt water in the bay, which...
Use of multi-sensor active fire detections to map fires in the United States: the future of monitoring trends in burn severity
Joshua J. Picotte, Michael Coan, Stephen M. Howard
2014, Conference Paper, Proceedings: Wildland fire in the Appalachians: Discussions among managers and scientists. General Technical Report SRS-199
The effort to utilize satellite-based MODIS, AVHRR, and GOES fire detections from the Hazard Monitoring System (HMS) to identify undocumented fires in Florida and improve the Monitoring Trends in Burn Severity (MTBS) mapping process has yielded promising results. This method was augmented using regression tree models to identify burned/not-burned pixels...
Well log and 2D seismic data character of the Wilcox Group in south-central Louisiana
Catherine B. Enomoto
2014, Gulf Coast Association of Geological Societies Transactions (64) 105-118
Well logs and 2D seismic data were used to interpret the depth and morphology of potential Paleocene and lower Eocene Wilcox Group slope and basin-floor reservoirs in south-central Louisiana. These may occur in a poorly explored area previously estimated by the U.S. Geological Survey to contain a mean undiscovered conventional...
Ground-motion site effects from multimethod shear-wave velocity characterization at 16 seismograph stations deployed for aftershocks of the August 2011 Mineral, Virginia earthquake
William J. Stephenson, Jackson K. Odum, Daniel E. McNamara, Robert A. Williams, Stephen J Angster
2014, GSA Special Papers (509) 47-65
We characterize shear-wave velocity versus depth (Vs profile) at 16 portable seismograph sites through the epicentral region of the 2011 Mw 5.8 Mineral (Virginia, USA) earthquake to investigate ground-motion site effects in the area. We used a multimethod acquisition and analysis approach, where active-source horizontal shear (SH) wave reflection and refraction...
Estimating structural collapse fragility of generic building typologies using expert judgment
Kishor S. Jaiswal, D.J. Wald, D. Perkins, W. P. Aspinall, Anne S. Kiremidjian
George Deodatis, Bruce R. Ellingwood, Dan M. Frangopol, editor(s)
2014, Conference Paper, Safety, reliability, risk, and life-cycle performance of structures and infrastructures
The structured expert elicitation process proposed by Cooke (1991), hereafter referred to as Cooke’s approach, is applied for the first time in the realm of structural collapse-fragility assessment for selected generic construction types. Cooke’s approach works on the principle of objective calibration scoring of judgments coupled with hypothesis testing used...
Finding that academic position
David W. Willis, Daniel A. Isermann
William W. Taylor, Abigail J. Lynch, Nancy J. Leonard, editor(s)
2014, Book chapter, Future of fisheries: Perspectives for emerging professionals
No abstract available....
Chromic and iron oxides as fecal markers to identify individual whooping cranes
Megan E. Brown, Robert Doyle, Jane N. Chandler, Glenn H. Olsen, John B. French, David E Wildt, Sarah J. Converse, Carol L Keefer, Nucharin Songsasen
David Aborn, Richard P. Urbanek, editor(s)
2014, Conference Paper, Proceedings of the twelfth North American crane workshop
The whooping crane (Grus americana) is listed as endangered under the IUCN Red List, the United States Endangered Species Act, and the Canadian Species at Risk Act (BirdLife International 2012, CWS and USFWS 2007). A major focus of recovery efforts for this endangered species is reintroduction to establish new populations...
Population demographics and life history of the round hickorynut (Obovaria subrotunda) in the Duck River, Tennessee
Chase Ehlo, James B. Layzer
2014, American Midland Naturalist (171) 1-15
Population characteristics and life history aspects of healthy mussel populations are poorly understood. The reproductive cycle, age and growth, and population structure of Obovaria subrotunda were examined at four sites in the middle Duck River, Tennessee. Obovaria subrotunda was confirmed to be a bradytictic species, spawning in the late summer and holding glochidia in...
Applying threshold concepts to conservation management of dryland ecosystems: Case studies on the Colorado Plateau
Matthew A. Bowker, Mark E. Miller, Steven L. Garman, Travis Belote
Glenn R. Guntenspergen, editor(s)
2014, Book chapter, Application of threshold concepts in natural resource decision making
Ecosystems may occupy functionally distinct alternative states, some of which are more or less desirable from a management standpoint. Transitions from state to state are usually associated with a particular trigger or sequence of triggers, such as the addition or subtraction of a disturbance. Transitions are often not linear, rather...
Earthquake mechanism and seafloor deformation for tsunami generation
Eric L. Geist, David D. Oglesby
Michael Beer, Ioannis A. Kougioumtzoglou, Edoardo Patelli, Ivan Siu-Kui Au, editor(s)
2014, Book chapter, Encyclopedia of earthquake engineering
Tsunamis are generated in the ocean by rapidly displacing the entire water column over a significant area. The potential energy resulting from this disturbance is balanced with the kinetic energy of the waves during propagation. Only a handful of submarine geologic phenomena can generate tsunamis: large-magnitude earthquakes, large landslides, and...
Width and dip of the southern San Andreas Fault at Salt Creek from modeling of geophysical data
Victoria E. Langenheim, Noah D. Athens, Daniel S. Scheirer, Gary S. Fuis, Michael J. Rymer, Mark R. Goldman
Robert E. Reynolds, editor(s)
2014, Conference Paper, Not a drop left to drink
We investigate the geometry and width of the southernmost stretch of the San Andreas Fault zone using new gravity and magnetic data along line 7 of the Salton Seismic Imaging Project. In the Salt Creek area of Durmid Hill, the San Andreas Fault coincides with a complex magnetic signature, with...
Thermodynamic properties for arsenic minerals and aqueous species
D. Kirk Nordstrom, Juraj Majzlan, Erich Konigsberger
Robert J. Bowell, Charles N. Alpers, Heather E. Jamieson, D. Kirk Nordstrom, Juraj Majzlan, editor(s)
2014, Book chapter, Arsenic: Environmental geochemistry, mineralogy, and microbiology (Reviews in Mineralogy and Geochemistry no. 79)
Quantitative geochemical calculations are not possible without thermodynamic databases and considerable advances in the quantity and quality of these databases have been made since the early days of Lewis and Randall (1923), Latimer (1952), and Rossini et al. (1952). Oelkers et al. (2009) wrote, “The creation...
Predicting the spatial extent of liquefaction from geospatial and earthquake specific parameters
Jing Zhu, Laurie G. Baise, Eric M. Thompson, David J. Wald, Keith L. Knudsen
George Deodatis, Bruce R. Ellingwood, Dan M. Frangopol, editor(s)
2014, Conference Paper, Safety, reliability, risk and life-cycle performance of structures and infrastructures: Proceedings of the 11th international conference on structural safety and reliability
The spatially extensive damage from the 2010-2011 Christchurch, New Zealand earthquake events are a reminder of the need for liquefaction hazard maps for anticipating damage from future earthquakes. Liquefaction hazard mapping as traditionally relied on detailed geologic mapping and expensive site studies. These traditional techniques are difficult to apply globally...
Openness to the unexpected: Our Pathways to Careers in a Federal Research Laboratory.
Kurt R. Newman, David B. Bunnell, Darryl W. Hondorp
William W. Taylor, Abigail J. Lynch, Nancy J. Leonard, editor(s)
2014, Book chapter, Future of fisheries: Perspectives for emerging professionals
Many fisheries professionals may not be in the job they originally envisioned for themselves when they began their undergraduate studies. Rather, their current positions could be the result of unexpected, opportunistic, or perhaps even “lucky” open doors that led them down an unexpected path. In many cases, a mentor helped...
Integrating recent land cover mapping efforts to update the National Gap Analysis Program's species habitat map
Alexa McKerrow, A. Davidson, Todd Earnhardt, Abigail L. Benson
Charles Toth, Thomas Holm, Boris Jutz, editor(s)
2014, Conference Paper, Proceedings: ISPRS Technical Commission I Symposium (Volume XL-1)
Over the past decade, great progress has been made to develop national extent land cover mapping products to address natural resource issues. One of the core products of the GAP Program is range-wide species distribution models for nearly 2000 terrestrial vertebrate species in the U.S. We rely on deductive modeling...
Arsenic associated with historical gold mining in the Sierra Nevada foothills: Case study and field trip guide for Empire Mine State Historic Park, California
Charles N. Alpers, Perry A Myers, Daniel Millsap, Tamsen B Regnier
Robert J. Bowell, Charles N. Alpers, Heather E. Jamieson, D. Kirk Nordstrom, Juraj Majzlan, editor(s)
2014, Reviews in Mineralogy and Geochemistry (79) 553-587
The Empire Mine, together with other mines in the Grass Valley mining district, produced at least 21.3 million troy ounces (663 tonnes) of gold (Au) during the 1850s through the 1950s, making it the most productive hardrock Au mining district in California history (Clark 1970). The Empire Mine...
A geologic approach to field methods in fluvial geomorphology
Faith A. Fitzpatrick
Mary J Thornbush, Casey D Allen, Faith A. Fitzpatrick, editor(s)
2014, Book chapter, Geomorphological Fieldwork
A geologic approach to field methods in fluvial geomorphology is useful for understanding causes and consequences of past, present, and possible future perturbations in river behavior and floodplain dynamics. Field methods include characterizing river planform and morphology changes and floodplain sedimentary sequences over long periods of time along a longitudinal...
Petrology and chemistry of the Green Acres gabbro complex near Winchester, Riverside County, California
Byron R. Berger
Douglas M. Morton, Fred K. Miller, editor(s)
2014, Book chapter, Peninsular Ranges Batholith, Baja California and Southern California
The Cretaceous Green Acres layered igneous complex, northeast of Winchester, California, is composed of a suite of olivine- and hornblende-bearing gabbros in the Peninsular Ranges batholith within the Perris tectonic block. A consistent mineral assemblage is observed throughout the complex, but there is considerable textural and modal heterogeneity. Both preclude...
Forest ecosystem reorganization underway in the Southwestern US: A preview of widespread forest changes in the Anthropocene
Craig D. Allen
V. Alaric Sample, R. Patrick Bixler, editor(s)
2014, Proceedings RMRS-P-71
No abstract available....
Resolving terrestrial ecosystem processes along a subgrid topographic gradient for an earth-system model
Z M Subin, Paul C.D. Milly, B N Sulman, Sergey Malyshev, E Shevliakova
2014, Hydrology and Earth System Sciences (11) 8443-8492
Soil moisture is a crucial control on surface water and energy fluxes, vegetation, and soil carbon cycling. Earth-system models (ESMs) generally represent an areal-average soil-moisture state in gridcells at scales of 50–200 km and as a result are not able to capture the nonlinear effects of topographically-controlled subgrid heterogeneity in...
Self-recognition in corals facilitates deep-sea habitat engineering
Sebastian J Hennige, Cheryl L. Morrison, Armin U. Form, Janina Buscher, Nicholas A. Kamenos, J. Murray Roberts
2014, Scientific Reports (4) 1-7
The ability of coral reefs to engineer complex three-dimensional habitats is central to their success and the rich biodiversity they support. In tropical reefs, encrusting coralline algae bind together substrates and dead coral framework to make continuous reef structures, but beyond the photic zone, the cold-water coral Lophelia pertusa also...
New imaging of submarine landslides from the 1964 earthquake near Whittier, Alaska, and a comparison to failures in other Alaskan fjords
Peter J. Haeussler, Thomas E. Parsons, David P. Finlayson, Patrick J. Hart, Jason D. Chaytor, Holly F. Ryan, Homa J. Lee, Keith A. Labay, Andrew Peterson, Lee Liberty
2014, Book chapter, Submarine mass movements and their consequences, Advances in Natural and Technological Hazards Research Vol. 37
The 1964 Alaska M w 9.2 earthquake triggered numerous submarine slope failures in fjords of southern Alaska. These failures generated local tsunamis, such as at Whittier, where they inundated the town within 4 min of the beginning of shaking. Run-up was up to 32 m, with 13 casualties....
Correlations in distribution and concentration of calcium, copper and iron with zinc in isolated extracellular deposits associated with age-related macular degeneration
Jane M Flinn, Peter Kakalec, Ryan Tappero, Blair F. Jones, Imre Lengyel
2014, Metallomics (6) 1223-1228
Zinc (Zn) is abundantly enriched in sub-retinal pigment epithelial (RPE) deposits, the hallmarks of age-related macular degeneration (AMD), and is thought to play a role in the formation of these deposits. However, it is not known whether Zn is the only metal relevant for sub-RPE deposit formation. Because of their...
