| 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. |
| Genre: | USGS Numbered Series |
| ProdID: | 98714 |
| Citation Author: | Dixon, James P.; Stihler, Scott D.; Power, John A.; Searcy, Cheryl K. |
| Citation Contributing Office: | Alaska Science Center |
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| Citation Language: | ENGLISH |
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| Citation No Pagination: | N |
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| Citation Phsyical Description: | iv, 11 p.; Appendices; Download of the 2009 Alaska Volcano Observatory Seismic Catalog |
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| Citation Publisher: | U.S. Geological Survey |
| Citation Series: | Data Series |
| Citation Series Code: | DS |
| Citation Series Number: | 531 |
| Citation Search Results Text: | Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2009; 2010; DS; 531; Dixon, James P.; Stihler, Scott D.; Power, John A.; Searcy, Cheryl K. |
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| Citation Year: | 2010 |
| Type: | citation/reference |
| Text: | Catalog of earthquake hypocenters at Alaskan volcanoes: January 1 through December 31, 2009; 2010; DS; 531; Dixon, James P.; Stihler, Scott D.; Power, John A.; Searcy, Cheryl K. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/ds_531.jpg |
| URL (INDEX PAGE): | http://pubs.usgs.gov/ds/531/ |
| Date Other: | Fri, 17 Sep 2010 00:00 -0500 |
| Publisher: | U.S. Geological Survey |
