Publications
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Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2004
The Alaska Volcano Observatory (AVO), a cooperative program of the U.S. Geological Survey, the Geophysical Institute of the University of Alaska Fairbanks, and the Alaska Division of Geological and Geophysical Surveys, has maintained seismic monitoring networks at historically active volcanoes in Alaska since 1988. The primary objectives of the seismic program are the real-time seismic monitoring
Authors
James P. Dixon, Scott D. Stihler, John A. Power, Guy Tytgat, Steve Estes, Stephanie Prejean, John J. Sanchez, Rebecca Sanches, Stephen R. McNutt, John Paskievitch
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 period of
Authors
Jon J. Major, William E. Scott, Carolyn Driedger, Dan Dzurisin
Argon dating at and near Medicine Lake volcano, California: Results and data
No abstract available.
Authors
Julie M. Donnelly-Nolan, Marvin A. Lanphere
Locations and descriptions of gravity, box, and push cores collected in San Francisco Bay between January and February, 1990 and 1991
A project to study San Francisco Bay sediments collected over 300 sediment gravity cores; six push cores, and three box cores in San Francisco Bay during the years 1990-91. The purpose of the sampling effort is to establish a database on the Holocene sediment history of the bay. The samples described and mapped are the first effort to catalog and present the data collected. Thus far the cores have
Authors
Roberto J. Anima, H. Edward Clifton, Carol Reiss, Florence L. Wong
Global Positioning System measurements on the island of Hawai`i: 1997 through 2004
This report summarizes GPS data and observations collected between 1997 and 2004 on the island of Hawai‘i with static surveying and continuously recording instruments.
On Kīlauea, the long-term deformation field is dominated by steady southeastern velocities of more than 6 cm/year and uplift of about 2 cm/yr at stations on the south flank (with respect to a fixed Pacific Plate). Superimposed on th
Authors
Asta Miklius, Peter Cervelli, Maurice Sako, Michael Lisowski, Susan Owen, Paul Segal, James Foster, Kevan Kamibayashi, Ben Brooks
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 formats
Authors
Lawrence M. Baker
Decadal-scale analysis of coastal landslides along the Big Sur coast: Rates and processes
No abstract available.
Authors
Cheryl J. Hapke, Krystal R. Green
Gravity and magnetic data along a seismic refraction-reflection line in northwest Nevada and northeast California
No abstract available.
Authors
Janet E. Tilden, David A. Ponce, Jonathan M. G. Glen, Kathleen D. Gans
Hawaiian Volcano Observatory seismic data, January to December 2004
The Hawaiian Volcano Observatory (HVO) summary presents seismic data gathered during the year. The seismic summary is offered without interpretation as a source of preliminary data. It is complete in the sense that most data for events of M≥1.5 routinely gathered by the Observatory are included. The HVO summaries have been published in various forms since 1956. Summaries prior to 1974 were issued
Authors
Jennifer S. Nakata
Wagon loads of sand blows in White County, Illinois
Several anecdotal accounts provide compelling evidence that liquefaction occurred at several sites in Illinois during the 1811-1812 New Madrid sequence, as much as 250 km north of the New Madrid seismic zone (NMSZ). At one Wabash Valley location, sand blows are still evident near Big Prairie, Illinois, a location described in a particularly detailed and precise historic account. This account inclu
Authors
Susan E. Hough, Roger Bilham, Karl Mueller, William Stephenson, Robert Williams, Jack Odum
Contemporaneous trachyandesitic and calc-alkaline volcanism of the Huerto Andesite, San Juan Volcanic Field, Colorado, USA
Locally, voluminous andesitic volcanism both preceded and followed large eruptions of silicic ash-flow tuff from many calderas in the San Juan volcanic field. The most voluminous post-collapse lava suite of the central San Juan caldera cluster is the 28 Ma Huerto Andesite, a diverse assemblage erupted from at least 5–6 volcanic centres that were active around the southern margins of the La Garita
Authors
F. Parat, M.A. Dungan, P. W. Lipman
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 Frankel