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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Carbon routing in the polar bear: insights from the lipid and protein pathways
No abstract available.
Authors
C.A. Striker, Karyn D. Rode, J. Erlenbach, C.T. Robbins
The magnetic tides of Honolulu
We review the phenomenon of time-stationary, periodic quiet-time geomagnetic tides. These are generated by the ionospheric and oceanic dynamos, and, to a lesser-extent, by the quiet-time magnetosphere, and they are affected by currents induced in the Earth's electrically conducting interior. We examine historical time series of hourly magnetic-vector measurements made at the Honolulu observatory.
Authors
Jeffrey J. Love, Erin Joshua Rigler
An evaluation of automated GIS tools for delineating karst sinkholes and closed depressions from 1-meter LIDAR-derived digital elevation data
LiDAR (Light Detection and Ranging) surveys of karst terrains provide high-resolution digital elevation models (DEMs) that are particularly useful for mapping sinkholes. In this study, we used automated processing tools within ArcGIS (v. 10.0) operating on a 1.0 m resolution LiDAR DEM in order to delineate sinkholes and closed depressions in the Boyce 7.5 minute quadrangle located in the northern
Authors
Daniel H. Doctor, John A. Young
Challenges and opportunities in studying and managing striped bass and its hybrids in the 21st Century
No abstract available.
Authors
Phillip William Bettoli
Characterization and remediation of iron(III) oxide-rich scale in a pipeline carrying acid mine drainage at Iron Mountain Mine, California, USA
http://imwa.info/docs/imwa_2013/IMWA2013_Campbell_481.pdf
Authors
Kate M. Campbell, Charles N. Alpers, D. Kirk Nordstrom, Alex E. Blum, Amy Williams
Constraints on behaviour of a mining‐induced earthquake inferred from laboratory rock mechanics experiments
On December 12, 2004, an earthquake of magnitude 2.2, located in the TauTona Gold Mine at a depth of about 3.65 km in the ancient Pretorius fault zone, was recorded by the in-mine borehole seismic network, yielding an excellent set of ground motion data recorded at hypocentral distances of several km. From these data, the seismic moment tensor, indicating mostly normal faulting with a small implos
Authors
Arthur F. McGarr, Malcolm J. S. Johnston, M. Boettcher, V. Heesakkers, Z. Reches
Development of a novel flow cytometric approach to evaluate fish sperm chromatin using fixed samples
The integrity of the paternal DNA is essential for the accurate transmission of genetic information, yet fertilization is not inhibited by chromatin breakage. Some methods are available for the sensitive detection of DNA damage and can be applied in studies of environmental toxicology, carcinogenesis, aging, and assisted reproduction techniques in both clinical and experimental settings. Because s
Authors
Jill A. Jenkins
Fifty years after Welles and Welles: Distribution and genetic structure of Desert Bighorn Sheep in Death Valley National Park
The status of desert bighorn sheep (Ovis canadensis nelsoni) populations in the mountains around Death Valley was first evaluated in 1938, shortly after designation of Death Valley National Monument. However, the most comprehensive evaluation of bighorn sheep in the region was conducted by Ralph and Florence Welles during 1955-1961. They documented patterns of use at water sources and other focal
Authors
Clinton W. Epps, John D. Wehausen, William B. Sloan, Stacy Holt, Tyler G. Creech, Rachel S. Crowhurst, Jef R. Jaeger, Kathleen M. Longshore, Ryan J. Monello
Integrated hydrologic modeling of a transboundary aquifer system —Lower Rio Grande
For more than 30 years the agreements developed for the aquifer systems of the lower Rio Grande and related river compacts of the Rio Grande River have evolved into a complex setting of transboundary conjunctive use. The conjunctive use now includes many facets of water rights, water use, and emerging demands between the states of New Mexico and Texas, the United States and Mexico, and various wat
Authors
Randall T. Hanson, Wolfgang Schmid, Jacob E. Knight, Thomas Maddock
International summit on integrated environmental modeling
This report describes the International Summit on Integrated Environmental Modeling (IEM), held in Reston, VA, on 7th-9th December 2010. The meeting brought together 57 scientists and managers from leading US and European government and non-governmental organizations, universities and companies together with international organizations convened over a number of years, including: the US Environment
Authors
Noha Gaber, Gary Geller, Pierre Glynn, Gerry Laniak, Alexey Voinov, Gene Whelan
Landsat Data Continuity Mission, now Landsat-8: six months on-orbit
The Landsat Data Continuity Mission (LDCM) with two pushbroom Earth-imaging sensors, the Operational Land Imager (OLI) and the Thermal InfraRed Sensor (TIRS), was launched on February 11, 2013. Its on-orbit check out period or commissioning phase lasted about 90 days. During this phase the spacecraft and its instruments were activated, operationally tested and their performance verified. In additi
Authors
Brian L. Markham, James C. Storey, James R. Irons
Paleogeographic insights based on new U-Pb dates for altered tuffs in the Miocene Barstow Formation, California
The type section of the Barstow Formation in the Mud Hills, north of Barstow, is a reference section for early to middle Miocene paleontology, magnetostratigraphy, and dated volcanic episodes. Thanks to this robust chronologic framework, much of the interpretation of the paleogeography of the region from about 18 Ma to 13 Ma is based on study of the rocks in the Mud Hills. Eastward from the type s
Authors
David M. Miller, Jose E. Rosario, Shannon R. Leslie, Jorge A. Vazquez