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Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2009

Data Series 531

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Abstract

Between January 1 and December 31, 2009, the Alaska Volcano Observatory (AVO) located 8,829 earthquakes, of which 7,438 occurred within 20 kilometers of the 33 volcanoes with seismograph subnetworks. Monitoring highlights in 2009 include the eruption of Redoubt Volcano, as well as unrest at Okmok Caldera, Shishaldin Volcano, and Mount Veniaminof. Additionally severe seismograph subnetwork outages resulted in four volcanoes (Aniakchak, Fourpeaked, Korovin, and Veniaminof) being removed from the formal list of monitored volcanoes in late 2009. This catalog includes descriptions of: (1) locations of seismic instrumentation deployed during 2009; (2) earthquake detection, recording, analysis, and data archival systems; (3) seismic velocity models used for earthquake locations; (4) a summary of earthquakes located in 2009; and (5) an accompanying UNIX tar-file with a summary of earthquake origin times, hypocenters, magnitudes, phase arrival times, location quality statistics, daily station usage statistics, all files used to determine the earthquake locations in 2009, and a dataless SEED volume for the AVO seismograph network.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2009
Series title:
Data Series
Series number:
531
Edition:
-
Year Published:
2010
Language:
ENGLISH
Publisher:
U.S. Geological Survey
Contributing office(s):
Alaska Science Center
Description:
iv, 11 p.; Appendices; Download of the 2009 Alaska Volcano Observatory Seismic Catalog
Time Range Start:
2009-01-01
Time Range End:
2009-12-31
Additional Online Files(Y/N):
Y