USGS Open-File Report 2004-1234
Catalog of Earthquake Hypocenters at Alaskan Volcanoes: January 1 through December 31, 2003 By James P. Dixon1, Scott D. Stihler2, John A. Power3, Guy Tytgat2, Seth C. Moran4, John J. Sánchez2, Stephen R. McNutt2, Steve Estes2, and John Paskievitch3 Open-File Report 2004-1234 2004 Any use of trade, firm, or product names is for descriptive purposes only and does not imply endorsement by the U.S. Government U.S. Department of the Interior U.S. Geological Survey 1 Alaska Volcano Observatory, U. S. Geological Survey, 903 Koyukuk Drive, Fairbanks, AK 99775-7320 2 Alaska Volcano Observatory, Geophysical Institute, 903 Koyukuk Drive, Fairbanks, AK 99775-7320 3 Alaska Volcano Observatory, U. S. Geological Survey, 4200 University Drive, Anchorage, AK 99508-4667 4 Cascades Volcano Observatory, U. S. Geological Survey, 1300 SE Cardinal Ct., Bldg. 10, Vancouver, WA 99508 2 CONTENTS Introduction...................................................................................................3 Instrumentation .............................................................................................5 Data Acquisition and Reduction ...................................................................8 Velocity Models...........................................................................................10 Seismicity.....................................................................................................11 Summary......................................................................................................14 References....................................................................................................15
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