Publications
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Map showing features and displacements of the Scenic Drive landslide, La Honda, California, during the period March 31-May 7, 2005 Map showing features and displacements of the Scenic Drive landslide, La Honda, California, during the period March 31-May 7, 2005
No abstract available.
Authors
Ray E. Wells, Michael J. Rymer, Carol S. Prentice, Karen L. Wheeler
Holocene fault scarps and shallow magnetic anomalies along the southern Whidbey Island fault zone near Woodinville, Washington Holocene fault scarps and shallow magnetic anomalies along the southern Whidbey Island fault zone near Woodinville, Washington
No abstract available.
Authors
Brian L. Sherrod, Richard J. Blakely, Craig Weaver, Harvey Kelsey, Elizabeth Barnett, Ray Wells
Blind comparisons of shear-wave velocities at closely-spaced sites in San Jose, California: Proceedings of a Workshop held at the US Geological Survey, Menlo Park, May 3, 2004 Blind comparisons of shear-wave velocities at closely-spaced sites in San Jose, California: Proceedings of a Workshop held at the US Geological Survey, Menlo Park, May 3, 2004
Shear-wave velocities within several hundred meters of Earth's surface are important in specifying earthquake ground motions for engineering design. Not only are the shearwave velocities used in classifying sites for use of modern building codes, but they are also used in site-specific studies of particularly significant structures. Many are the methods for estimating sub-surface shear...
Publications of the Volcano Hazards Program 2003 Publications of the Volcano Hazards Program 2003
No abstract available.
Authors
Manuel Nathenson
2001 volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory 2001 volcanic activity in Alaska and Kamchatka: Summary of events and response of the Alaska Volcano Observatory
The Alaska Volcano Observatory (AVO) monitors the more than 40 historically active volcanoes of the Aleutian Arc. Of these, 22 are monitored with short-period seismic instrument networks as of the end of 2001. The AVO core monitoring program also includes daily analysis of satellite imagery, observation overflights, compilation of pilot reports and reports from local residents and...
Authors
Robert G. McGimsey, Christina A. Neal, Olga Girina
Pre-1980 eruptive history of Mount St. Helens, Washington Pre-1980 eruptive history of Mount St. Helens, Washington
No abstract available.
Authors
Michael A. Clynne, David W. Ramsey, Edward W. Wolfe, James W. Hendley, Peter H. Stauffer
Past and future earthquakes on the San Andreas Fault Past and future earthquakes on the San Andreas Fault
No abstract available.
Authors
Ray J. Weldon, Thomas E. Fumal, Glenn Biasi, Katherine M. Scharer
Cassini radar views the surface of Titan Cassini radar views the surface of Titan
The Cassini Titan Radar Mapper imaged about 1% of Titan's surface at a resolution of ∼0.5 kilometer, and larger areas of the globe in lower resolution modes. The images reveal a complex surface, with areas of low relief and a variety of geologic features suggestive of dome-like volcanic constructs, flows, and sinuous channels. The surface appears to be young, with few impact craters...
Authors
C. Elachi, S. Wall, M. Allison, Y. Anderson, R. Boehmer, P. Callahan, P. Encrenaz, E. Flamini, G. Franceschetti, Y. Gim, G. Hamilton, S. Hensley, M. Janssen, W. Johnson, K. Kelleher, Randolph L. Kirk, R. Lopes, R. Lorenz, J. Lunine, D. Muhleman, S. Ostro, F. Paganelli, G. Picardi, F. Posa, L. Roth, R. Seu, S. Shaffer, Laurence A. Soderblom, B. Stiles, E. Stofan, S. Vetrella, R. West, C. Wood, L. Wye, H. Zebker
Alabama-Mississippi coastal classification maps - Perdido Pass to Cat Island Alabama-Mississippi coastal classification maps - Perdido Pass to Cat Island
The primary purpose of the USGS National Assessment of Coastal Change Project is to provide accurate representations of pre-storm ground conditions for areas that are designated high-priority because they have dense populations or valuable resources that are at risk from storm waves. Another purpose of the project is to develop a geomorphic (land feature) coastal classification that...
Authors
Robert A. Morton, Russell L. Peterson
Are there active glaciers on Mars? (Reply) Are there active glaciers on Mars? (Reply)
Gillespie et al.1 concur with our interpretation that certain lobate equatorial and mid-latitude features on Mars are due to debris-covered glaciers formed largely during past periods of increased spin-axis obliquity, when climate regimes favoured snow and ice accumulation and glacial flow2. They suggest that the ‘hourglass’ deposit, dated at more than 40 Myr old2, could be active today...
Authors
J.W. Head, G. Neukum, R. Jaumann, H. Hiesinger, E. Hauber, M. H. Carr, P. Masson, B. Foing, H. Hoffmann, M. Kreslavsky, S. Milkovich, S. Van Gasselt
New Perspectives on Ancient Mars New Perspectives on Ancient Mars
Mars was most active during its first billion years. The core, mantle, and crust formed within ∼50 million years of solar system formation. A magnetic dynamo in a convecting fluid core magnetized the crust, and the global field shielded a more massive early atmosphere against solar wind stripping. The Tharsis province became a focus for volcanism, deformation, and outgassing of water and...
Authors
S.C. Solomon, O. Aharonson, J.M. Aurnou, W. B. Banerdt, Michael H. Carr, A. J. Dombard, H. V. Frey, Matthew P. Golombek, S.A. Hauck, J.W. Head, Bruce M. Jakosky, C.L. Johnson, P.J. McGovern, G.A. Neumann, R.J. Phillips, D.E. Smith, Maria Zuber