Publications
Filter Total Items: 7511
Mount St. Helens erupts again: Activity from September 2004 through March 2005 Mount St. Helens erupts again: Activity from September 2004 through March 2005
Eruptive activity at Mount St. Helens captured the world’s attention in 1980 when the largest historical landslide on Earth and a powerful explosion reshaped the volcano, created its distinctive crater, and dramatically modified the surrounding landscape. Over the next 6 years, episodic extrusions of lava built a large dome in the crater. From 1987 to 2004, Mount St. Helens returned to a...
Authors
Jon J. Major, William E. Scott, Carolyn Driedger, Dan Dzurisin
Argon dating at and near Medicine Lake volcano, California: Results and data Argon dating at and near Medicine Lake volcano, California: Results and data
No abstract available.
Authors
Julie M. Donnelly-Nolan, Marvin A. Lanphere
Evidence for subsurface water ice in Korolev crater, Mars Evidence for subsurface water ice in Korolev crater, Mars
Following the work of Kieffer and Titus (2001, Icarus 154, 162–180), we present results of thermal IR observations of Korolev crater, located at ∼73° latitude in the martian northern polar region. Similar to techniques employed by Titus et al. (2003, Science 299, 1048–1050), we use infrared images from the Thermal Emission Imaging System (THEMIS) aboard Mars Odyssey to identify several...
Authors
John C. Armstrong, Timothy N. Titus, Hugh H. Kieffer
DUCKS: Low cost thermal monitoring units for near-vent deployment DUCKS: Low cost thermal monitoring units for near-vent deployment
During 1999 we designed and tested a thermal monitoring system to provide a cheap, robust, modular, real-time system capable of surviving the hostile conditions encountered proximal to active volcanic vents. In November 2000 the first system was deployed at Pu'u 'O'o (Kilauea, Hawai'i) to target persistently active vents. Aside from some minor problems, such as sensor damage due to...
Authors
A. Harris, D. Pirie, K. Horton, H. Garbeil, E. Pilger, H. Ramm, R. Hoblitt, C. Thornber, M. Ripepe, E. Marchetti, P. Poggi
libvaxdata: VAX data format conversion routines libvaxdata: VAX data format conversion routines
libvaxdata provides a collection of routines for converting numeric data-integer and floating-point-to and from the formats used on a Digital Equipment Corporation1 (DEC) VAX 32-bit minicomputer (Brunner, 1991). Since the VAX numeric data formats are inherited from those used on a DEC PDP-11 16-bit minicomputer, these routines can be used to convert PDP-11 data as well. VAX numeric data...
Authors
Lawrence M. Baker
Reply to "Comment on 'How can seismic hazard in the New Madrid seismic zone be similar to that in California?' by Arthur Frankel" Reply to "Comment on 'How can seismic hazard in the New Madrid seismic zone be similar to that in California?' by Arthur Frankel"
No abstract available.
Authors
Arthur D. Frankel
Remotely triggered earthquakes following moderate mainshocks (or, why California is not falling into the ocean) Remotely triggered earthquakes following moderate mainshocks (or, why California is not falling into the ocean)
On several occasions in recent memory California has experienced apparent clusters of earthquake activity that are too far apart to be considered related according to a classic taxonomy that includes foreshocks, mainshocks, and aftershocks. During a week-long period in July 1986, California experienced the M 6.0 North Palm Springs earthquake, the M 5.5 Oceanside earthquake, and a swarm...
Authors
Susan E. Hough
Seismicity and tilt associated with the 2003 Anatahan eruption sequence Seismicity and tilt associated with the 2003 Anatahan eruption sequence
On May 10, 2003, the first historical eruption of Anatahan volcano in the western Pacific Mariana Islands was fortuitously recorded by a broadband seismograph installed on the island only 4 days prior to the eruption. This station, located 7 km WNW of the active crater, together with another broadband seismograph on Sarigan Island 45 km to the north, continued to operate throughout the 2...
Authors
S.H. Pozgay, R.A. White, D.A. Wiens, P.J. Shore, A.W. Sauter, J.L. Kaipat
Preliminary report on the 28 September 2004, M 6.0 Parkfield, California earthquake Preliminary report on the 28 September 2004, M 6.0 Parkfield, California earthquake
The Mw 6.0 Parkfield earthquake struck central California at 17:15:14 UTC on 28 September 2004. The epicenter was located 11 km southeast of the rural town of Parkfield, adjacent to Gold Hill and on the San Andreas Fault (Figure 1). The California Integrated Seismic Network (CISN) reported that the hypocenter was located at 35.819°N, 120.364°W at a depth of 8.8 km. From the distribution...
Authors
John Langbein, Roger D. Borcherdt, Douglas Dreger, J. Fletcher, Jeanne L Hardebeck, Margaret Hellweg, C. Ji, Malcolm J. S. Johnston, Jessica R. Murray, Robert Nadeau, Michael J. Rymer, Jerome A. Treiman
The hurricane-flood-landslide continuum The hurricane-flood-landslide continuum
In August 2004, representatives from NOAA, NASA, the US Geological Survey (USGS), as well as other government agencies and academic institutions convened in San Juan, Puerto Rico, at a workshop to discuss a proposed research project called the Hurricane-Flood-Landslide Continuum (HFLC). The purpose of the HFLC is to develop and integrate the multidisciplinary tools needed to issue...
Authors
A. J. Negri, N. Burkardt, J. H. Golden, J. B. Halverson, G. J. Huffman, M. C. Larsen, J. A. McGinley, R. G. Updike, J. P. Verdin, G. F. Wieczorek
Volcanic-ash hazard to aviation during the 2003-2004 eruptive activity of Anatahan volcano, Commonwealth of the Northern Mariana Islands Volcanic-ash hazard to aviation during the 2003-2004 eruptive activity of Anatahan volcano, Commonwealth of the Northern Mariana Islands
Within the Commonwealth of the Northern Mariana Islands (CNMI), Anatahan is one of nine active subaerial volcanoes that pose hazards to major air-traffic routes from airborne volcanic ash. The 2003-2004 eruptive activity of Anatahan volcano affected the region's aviation operations for 3 days in May 2003. On the first day of the eruption (10 May 2003), two international flights from...
Authors
M. Guffanti, J.W. Ewert, G.M. Gallina, G.J.S. Bluth, G.L. Swanson
An integrated view of the chemistry and mineralogy of martian soils An integrated view of the chemistry and mineralogy of martian soils
The mineralogical and elemental compositions of the martian soil are indicators of chemical and physical weathering processes. Using data from the Mars Exploration Rovers, we show that bright dust deposits on opposite sides of the planet are part of a global unit and not dominated by the composition of local rocks. Dark soil deposits at both sites have similar basaltic mineralogies, and...
Authors
A. S. Yen, Ralf Gellert, C. Schroder, R.V. Morris, J.F. Bell, A.T. Knudson, B. C. Clark, D. W. Ming, J.A. Crisp, R. E. Arvidson, D. Blaney, J. Bruckner, P. R. Christensen, D.J. DesMarais, P.A. De Souza, T.E. Economou, A. Ghosh, B.C. Hahn, Kenneth E. Herkenhoff, L.A. Haskin, J.A. Hurowitz, B.L. Joliff, J. R. Johnson, G. Klingelhofer, M.B. Madsen, S. M. McLennan, H.Y. McSween, L. Richter, R. Rieder, D. Rodionov, Laurence A. Soderblom, S. W. Squyres, N.J. Tosca, A. Wang, M. Wyatt, J. Zipfel