Publications
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Debris-flow initiation from large, slow-moving landslides Debris-flow initiation from large, slow-moving landslides
In some mountainous terrain, debris flows preferentially initiate from the toes and margins of larger, deeper, slower-moving landslides. During the wet winter of 1997, we began real-time monitoring of the large, active Cleveland Corral landslide complex in California, USA. When the main slide is actively moving, small, shallow, first-time slides on the toe and margins mobilize into...
Authors
M.E. Reid, D.L. Brien, R.G. LaHusen, J. J. Roering, J. de la Fuente, S. D. Ellen
Timing of recent accelerations of Pine Island Glacier, Antarctica Timing of recent accelerations of Pine Island Glacier, Antarctica
We have used Interferometric Synthetic Aperture Radar (InSAR) data and sequential Landsat imagery to identify and temporally constrain two acceleration events on Pine Island Glacier (PIG). These two events are separated by a period of at least seven years (1987 - 1994). The change in discharge between two flux gates indicates that the majority of the increase in discharge associated with...
Authors
I. Joughin, Eric Rignot, Christine E. Rosanova, Baerbel K. Lucchitta, J. Bohlander
Geology of the MER 2003 "Elysium" candidate landing site in southeastern Utopia Planitia, Mars Geology of the MER 2003 "Elysium" candidate landing site in southeastern Utopia Planitia, Mars
The NASA Mars Exploration Rover (MER) Project has been considering a landing-site ellipse designated EP78B2 in southeastern Utopia Planitia, southwest of Elysium Mons. The site appears to be relatively safe for a MER landing site because of its predicted low wind velocities in mesoscale atmospheric circulation models and its low surface roughness at various scales as indicated by...
Authors
Kenneth L. Tanaka, Michael H. Carr, James A. Skinner, Martha S. Gilmore, Trent M. Hare
Debris-flow deposits and watershed erosion rates near southern Death Valley, CA, United States Debris-flow deposits and watershed erosion rates near southern Death Valley, CA, United States
No abstract available.
Authors
K. M. Schmidt, C.M. Menges
Is a powerful quake likely to strike in the next 30 years? Is a powerful quake likely to strike in the next 30 years?
No abstract available.
Authors
Andrew J. Michael, Stephanie L. Ross, Robert W. Simpson, Mary Lou Zoback, David P. Schwartz, Michael L. Blanpied
Preliminary volcano-hazard assessment for Great Sitkin Volcano, Alaska Preliminary volcano-hazard assessment for Great Sitkin Volcano, Alaska
Great Sitkin Volcano is a composite andesitic stratovolcano on Great Sitkin Island (51°05’ N latitude, 176°25’ W longitude), a small (14 x 16 km), circular volcanic island in the western Aleutian Islands of Alaska. Great Sitkin Island is located about 35 kilometers northeast of the community of Adak on Adak Island and 130 kilometers west of the community of Atka on Atka Island. Great...
Authors
Christopher F. Waythomas, Thomas P. Miller, Christopher J. Nye
What governments are doing to reduce the consequences of landslides What governments are doing to reduce the consequences of landslides
No abstract available.
Authors
E. E. Brabb, D. G. Howell, W. R. Cotton
Evaluation of airborne image data for mapping riparian vegetation within the Grand Canyon Evaluation of airborne image data for mapping riparian vegetation within the Grand Canyon
This study examined various types of remote-sensing data that have been acquired during a 12-month period over a portion of the Colorado River corridor to determine the type of data and conditions for data acquisition that provide the optimum classification results for mapping riparian vegetation. Issues related to vegetation mapping included time of year, number and positions of...
Authors
Philip A. Davis, Matthew I. Staid, Jeffrey B. Plescia, Jeffrey R. Johnson
Abstracts of the annual meeting of Planetary Geologic Mappers: June 21-22, 2002, Tempe, Arizona Abstracts of the annual meeting of Planetary Geologic Mappers: June 21-22, 2002, Tempe, Arizona
The annual meeting of planetary geologic mappers allows mappers the opportunity to exchange ideas, experiences, victories, and problems. In addition, presentations are reviewed by the Geologic Mapping Subcommittee (GEMS) to provide input to the Planetary Geology and Geophysics Mapping Program review panel’s consideration of new proposals and progress reports that include mapping tasks...
Authors
Kenneth L. Tanaka, David A. Senske
Comments on potential geologic and seismic hazards affecting Mare Island, Solano County, California Comments on potential geologic and seismic hazards affecting Mare Island, Solano County, California
This report was prepared in response to a written request from the City of Vallejo, California, to the U.S. Geological Survey (USGS). By letter of October 4, 2002, the City requested that the USGS "provide advice to the City’s LNG Health and Safety Committee on its review of a potential liquid natural gas project" on the southern portion of Mare Island. The City specifically requested...
Authors
T.L. Holzer, C. M. Wentworth, W. H. Bakun, J. Boatwright, T.E. Brocher, M. Çelebi, W.L. Ellsworth, J.P.B. Fletcher, E.L. Geist, R. W. Graymer, R. E. Kayen, D. K. Keefer, D. H. Oppenheimer, W.U. Savage, David P. Schwartz, R.W. Simpson
Evaluation of airborne image data and LIDAR main stem data for monitoring physical resources within the Colorado River ecosystem Evaluation of airborne image data and LIDAR main stem data for monitoring physical resources within the Colorado River ecosystem
This study evaluated near-infrared LIDAR data acquired over the main-stem channel at four long-term monitoring sites within the Colorado River ecosystem (CRE) to determine the ability of these data to provide reliable indications in changes in water elevation over time. Our results indicate that there is a good correlation between the LIDAR water-surface elevations and ground...
Authors
Philip A. Davis, Mark R. Rosiek, Donna M. Galuszka
Earthquake-volcano interactions Earthquake-volcano interactions
No abstract available.
Authors
David P. Hill, Frederick Pollitz, Christopher Newhall