Publications
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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 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 Clynne, David Ramsey, Edward Wolfe, James Hendley, Peter 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 Fumal, Glenn Biasi, Katherine 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 Kirk, R. Lopes, R. Lorenz, J. Lunine, D. Muhleman, S. Ostro, F. Paganelli, G. Picardi, F. Posa, L. Roth, R. Seu, S. Shaffer, Laurence 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 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. 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. Banerdt, Michael Carr, A. Dombard, H. Frey, Matthew P. Golombek, S.A. Hauck, J.W. Head, Bruce Jakosky, C.L. Johnson, P.J. McGovern, G.A. Neumann, R.J. Phillips, D.E. Smith, Maria Zuber
Distinguishing between debris flows and floods from field evidence in small watersheds Distinguishing between debris flows and floods from field evidence in small watersheds
Post-flood indirect measurement techniques to back-calculate flood magnitude are not valid for debris flows, which commonly occur in small steep watersheds during intense rainstorms. This is because debris flows can move much faster than floods in steep channel reaches and much slower than floods in low-gradient reaches. In addition, debris-flow deposition may drastically alter channel...
Authors
Thomas Pierson
Steam explosions, earthquakes, and volcanic eruptions -- what's in Yellowstone's future? Steam explosions, earthquakes, and volcanic eruptions -- what's in Yellowstone's future?
Yellowstone, one of the world’s largest active volcanic systems, has produced several giant volcanic eruptions in the past few million years, as well as many smaller eruptions and steam explosions. Although no eruptions of lava or volcanic ash have occurred for many thousands of years, future eruptions are likely. In the next few hundred years, hazards will most probably be limited to...
Authors
Jacob Lowenstern, Robert Christiansen, Robert Smith, Lisa Morgan, Henry Heasler
Reconnaissance gas measurements on the East Rift Zone of Kilauea Volcano, Hawai'i by Fourier transform infrared spectroscopy Reconnaissance gas measurements on the East Rift Zone of Kilauea Volcano, Hawai'i by Fourier transform infrared spectroscopy
We report the results of a set of measurements of volcanic gases on two small ground level plumes in the vicinity of Pu`u `O`o cone on the middle East Rift Zone (ERZ) of Kilauea volcano, Hawai`i on 15 June 2001 using open-path Fourier transform infrared (FTIR) spectroscopy. The work was carried out as a reconnaissance survey to assess the monitoring and research value of FTIR...
Authors
Kenneth McGee, Tamar Elias, A. Sutton, Michael Doukas, Peter Zemek, Terrence Gerlach