Conference Papers
Science Quality and Integrity
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
The USGS provides unbiased, objective, and impartial scientific information upon which our audiences, including resource managers, planners, and other entities, rely.
Browse almost 5,000 conference papers authored by our scientists and refine search by topic, location, year, and advanced search.
Filter Total Items: 5326
Multicomponent seismic methods for characterizing gas hydrate occurrences and systems in deep-water Gulf of Mexico
In-situ characterization and quantification of natural gas hydrate occurrences remain critical research directions, whether for energy resource, drilling hazard, or climate-related studies. Marine multicomponent seismic data provide the full seismic wavefield including partial redundancy, and provide a promising set of approaches for gas hydrate characterization. Numerous authors have demonstrated
Authors
Seth S. Haines, Myung W. Lee, Timothy S. Collett, Bob A. Hardage
National intergrated drought information system
[No abstract available]
Authors
R. Pulwarty, J. Verdin, L. Darby, C. McNutt, R. Webb
Near-field hazard assessment of March 11, 2011 Japan Tsunami sources inferred from different methods
Tsunami source is the origin of the subsequent transoceanic water waves, and thus the most critical component in modern tsunami forecast methodology. Although impractical to be quantified directly, a tsunami source can be estimated by different methods based on a variety of measurements provided by deep-ocean tsunameters, seismometers, GPS, and other advanced instruments, some in real time, some i
Authors
Y. Wei, V.V. Titov, A. Newman, G. Hayes, Liujuan Tang, C. Chamberlin
Nest predation and circulating corticosterone levels within and among species
Variation in the risk of predation to offspring can influence the expression of reproductive strategies both within and among species. Appropriate expression of reproductive strategies in environments that differ in predation risk can have clear advantages for fitness. Although adult-predation risk appears to influence glucocorticosteroid levels, leading to changes in behavioral and life-history s
Authors
J.J. Fontaine, E. Arriero, H. Schwabl, T. E. Martin
Nest-site fidelity and dispersal of Gyrfalcons estimated by noninvasive genetic sampling
We used feathers from adult Gyrfalcons (Falco rusticolus) molted in breeding territories and blood samples from nestlings to document nest-site fidelity and dispersal of breeding adults and juveniles at three areas 100- 350 km apart in Yukon Delta National Wildlife Refuge, Alaska, 2003-2007. We used genotypes from seven polymorphic microsatellite loci that provided a mean probability of identity o
Authors
Travis L. Booms, Sandra L. Talbot, George K. Sage, Brian J. McCaffery, Kevin G. McCracken, Philip F. Schempf
Nine endangered taxa, one recovering ecosystem: Identifying common ground for recovery on Santa Cruz Island, California
It is not uncommon to have several rare and listed taxa occupying habitats in one landscape or management area where conservation amounts to defense against the possibility of further loss. It is uncommon and extremely exciting, however, to have several listed taxa occupying one island that is managed cooperatively for conservation and recovery. On Santa Cruz Island, the largest of the northern Ca
Authors
A. Kathryn McEachern, Dieter H. Wilken
On the powerful use of simulations in the quake-catcher network to efficiently position low-cost earthquake sensors
The Quake-Catcher Network (QCN) uses low-cost sensors connected to volunteer computers across the world to monitor seismic events. The location and density of these sensors' placement can impact the accuracy of the event detection. Because testing different special arrangements of new sensors could disrupt the currently active project, this would best be accomplished in a simulated environment. Th
Authors
K. Benson, T. Estrada, M. Taufer, J. Lawrence, E. Cochran
Overview on the effects of parasites on fish health
It is believed by many that parasites are only as important as the fish they infect. Parasites are ubiquitous, primarily surviving in a dynamic equilibrium with their host(s) and they are often overlooked in fish health assessments. Changes in the environment, both anthropogenic and environmental, can alter the parasite/host equilibrium and cause disease or mortality in fish. Therefore it is imper
Authors
D.D. Iwanowicz
Parallelization of GeoClaw code for modeling geophysical flows with adaptive mesh refinement on many-core systems
We parallelized the GeoClaw code on one-level grid using OpenMP in March, 2011 to meet the urgent need of simulating tsunami waves at near-shore from Tohoku 2011 and achieved over 75% of the potential speed-up on an eight core Dell Precision T7500 workstation [1]. After submitting that work to SC11 the International Conference for High Performance Computing, we obtained an unreleased OpenMP versio
Authors
S. Zhang, D.A. Yuen, A. Zhu, S. Song, David L. George
Pathogens and diseases of freshwater mussels in the United States: Studies on bacterial transmission and depuration
Unionid mussels are recognized as important contributors to healthy aquatic ecosystems, as well as bioindicators of environmental perturbations. Because they are sedentary, filter feeding animals and require hosts (i.e., fishes) to transform embryonic glochidia, mussels are susceptible to direct adverse environmental parameters, and indirect parameters that restrict the timely presence of the host
Authors
Clifford E. Starliper
Pelagic Piscivory Under Shifting Environmental Gradients: Application of A Visual Foraging Model To Diel and Seasonal Sonic Telemetry of Cutthroat Trout In Strawberry Reservoir
No abstract available.
Authors
David A. Beauchamp, Adam G. Hansen, Casey M. Baldwin
Petroleum prospectivity of the Canada Basin, Arctic Ocean
Reconnaissance seismic reflection data indicate that Canada Basin is a >700,000 sq. km. remnant of the Amerasia Basin of the Arctic Ocean that lies south of the Alpha-Mendeleev Large Igneous Province, which was constructed across the northern part of the Amerasia Basin between about 127 and 89–83.5 Ma. Canada Basin was filled by Early Jurassic to Holocene detritus from the Beaufort–Mackenzie Delta
Authors
Arthur Grantz, Patrick E. Hart