Conference Papers
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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.
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Middle Pleistocene infill of Hinkley Valley by Mojave River sediment and associated lake sediment: Depositional architecture and deformation by strike-slip faults
Hinkley Valley in the Mojave Desert, near Barstow about 140 km northeast of Los Angeles and midway between Victorville Valley and the Lake Manix basin, contains a thick sedimentary sequence delivered by the Mojave River. Our study of sediment cores drilled in the valley indicates that Hinkley Valley was probably a closed playa basin with stream inflow from four directions prior to Mojave River inf
Authors
David M. Miller, Elizabeth Haddon, Victoria E. Langenheim, Andrew J. Cyr, Elmira Wan, Laura Walkup, Scott W. Starratt
Development of Raman spectroscopy as a thermal maturity proxy in unconventional resource assessment
The objective of this study was to correlate shale hydrous pyrolysis with thermal maturity measurements based on solid bitumen reflectance (BRo) at the U.S. Geological Survey (USGS) and Raman microscopy (RM) at WellDog. In semi-blind Phase I, BRo values of the initial set of 8 samples were withheld prior to RM analysis. As reported previously, a strong correlation was observed between BRo and Rama
Authors
Grant A. Myers, Kelsey Kehoe, Paul C. Hackley
International Limnogeology Congress (ILIC6), Reno USA, special issue on new limnogeological research focused on Holocene lake systems
The 6th International Limnogeology Congress (ILIC6) of the International Association of Limnogeology (IAL) was held in Reno, Nevada, USA 15–19 June, 2015. The successful congress brought together a wide variety of academic, government, and industry participants from 20 countries and six continents. The highpoint of the four-day meeting were eight keynote addresses highlighting cutting-edge researc
Authors
Scott W. Starratt, Michael R. Rosen
Hydrogeophysics at societally relevant scales: Airborne electromagnetic applications and model structural uncertainty quantification
There is a critical and growing need for information about subsurface geological properties and processes over sufficiently large areas that can inform key scientific and societal studies. Airborne geophysical methods fill a unique role in Earth observation because of their ability to detect deep subsurface properties at regional scales and with high spatial resolution that cannot be achieved with
Authors
Burke J. Minsley, Nathan Leon Foks, Wade Kress, James R. Rigby
Geomorphic identification of physical habitat features in a large, altered river system
Altered flow regimes in streams can significantly affect ecosystems and disturb ecological processes, leading to species loss and extinction. Many river management projects use stream classification and habitat assessment approaches to design practical solutions to reverse or mitigate adverse effects of flow regime alteration on stream systems. The objective of this study was to develop a methodol
Authors
L. Guertault, G. Fox, Shannon K. Brewer
Irregular focal mechanisms observed at Salton Sea Geothermal Field: Possible influences of anthropogenic stress perturbations
At the Salton Sea Geothermal Field (SSGF), strain accumulation is released through seismic slip and aseismic deformation. Earthquake activity at the SSGF often occurs in swarm-like clusters, some with clear migration patterns. We have identified an earthquake sequence composed entirely of focal mechanisms representing an ambiguous style of faulting, where strikes are similar but deformation occurs
Authors
Aren Crandall-Bear, Andrew J. Barbour, Martin Schoenball
Use of real-time dust monitoring and surface condition to evaluate success of unpaved road treatments
No abstract available.
Authors
Bethany K. Kunz, Nicholas S. Green, Janice L. Albers, Mark L. Wildhaber, Edward E. Little
Is sensitivity to anticoagulant rodenticides affected by repeated exposure in hawks?
A seminal question in wildlife toxicology is whether exposure to an environmental contaminant, in particular a second-generation anticoagulant rodenticide, can evoke subtle long lasting effects on body condition, physiological function and survival. Many reports indicate that non-target predators often carry residues of several rodenticides, which is indicative of multiple exposures. An often-cite
Authors
Barnett Rattner
Evaluation of a decoy-only public good hunting opportunity in central South Dakota: The role of harvest success on hunter satisfaction
An important measure of success for wildlife managers is hunter satisfaction, and it often has been assumed that harvest success is related to satisfaction and may even be a surrogate measure for hunter satisfaction. However, introduction of the multiple satisfactions concept, showing that hunters seek and receive a number of benefits from hunting in addition to harvest success, has directed resea
Authors
Larry M. Gigliotti
Controls on deep direct-use thermal energy storage (DDU-TES) in the Portland Basin, Oregon, USA
Aquifer Thermal Energy Storage is being evaluated as a complementary technology to Deep Direct-Use for the Portland Basin, Oregon, USA. Aquifers can be used to efficiently distribute and store heat for seasonal use. The use of injection-extraction well pairs precludes the need to store or dispose of large volumes of pumped groundwater or to obtain a consumptive groundwater right. Injection tempera
Authors
Erick Burns, Trenton T. Cladouhos, C.F. Williams, J. Bershaw,
Efficiently approximating the Pareto frontier: Hydropower dam placement in the Amazon basin
Real–world problems are often not fully characterized by a single optimal solution, as they frequently involve multiple competing objectives; it is therefore important to identify the so-called Pareto frontier, which captures solution trade-offs. We propose a fully polynomial-time approximation scheme based on Dynamic Programming (DP) for computing a polynomially succinct curve that approximates t
Authors
Xiaojian Wu, Jonathan Gomes-Selman, Qinru Shi, Yexiang Xue, Roosevelt Garcia-Villacorta, Eliza Anderson, Suresh Sethi, Scott Steinschneider, Alexander Flecker, Carla P. Gomes
Mapping interactive geospatial linked data
No abstract available.
Authors
William (Contractor) Baumer, Logan J. Powell, Dalia E. Varanka