Seismic Response of the Katmai Volcanoes to the December 6, 1999 Magnitude 7.0 Karluk Lake Earthquake, Alaska
A sudden increase in earthquake activity was observed beneath volcanoes in the Katmai area on the Alaska Peninsula immediately following the 6 December 1999 magnitude (MW) 7.0 Karluk Lake earthquake beneath southern Kodiak Island, Alaska. The observed increase in earthquake activity consisted of sma...
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ftusouthflorida:oai:digitalcommons.usf.edu:geo_facpub-1289 2023-07-30T04:04:41+02:00 Seismic Response of the Katmai Volcanoes to the December 6, 1999 Magnitude 7.0 Karluk Lake Earthquake, Alaska Power, J. A. Moran, S. C. McNutt, Stephen R. Stihler, S. D. Sanchez, J. J. 2001-02-01T08:00:00Z https://digitalcommons.usf.edu/geo_facpub/290 https://doi.org/10.1785/0120000054 unknown Digital Commons @ University of South Florida https://digitalcommons.usf.edu/geo_facpub/290 doi:10.1785/0120000054 https://doi.org/10.1785/0120000054 School of Geosciences Faculty and Staff Publications Earth Sciences article 2001 ftusouthflorida https://doi.org/10.1785/0120000054 2023-07-13T20:27:15Z A sudden increase in earthquake activity was observed beneath volcanoes in the Katmai area on the Alaska Peninsula immediately following the 6 December 1999 magnitude (MW) 7.0 Karluk Lake earthquake beneath southern Kodiak Island, Alaska. The observed increase in earthquake activity consisted of small (ML < 1.3), shallow (Z < 5.0 km) events. These earthquakes were located beneath Mount Martin, Mount Mageik, Trident Volcano, and the Katmai caldera and began within the coda of the Karluk Lake mainshock. All of these earthquakes occurred in areas and magnitude ranges that are typical for the background seismicity observed in the Katmai area. Seismicity rates returned to background levels 8 to 13 hours after the Karluk Lake mainshock. The close temporal relationship with the Karluk Lake mainshock, the onset of activity within the mainshock coda, and the simultaneous increase beneath four separate volcanic centers all suggest these earthquakes were remotely triggered. Modeling of the Coulomb stress changes from the mainshock for optimally oriented faults suggests negligible change in static stress beneath the Katmai volcanoes. This result favors models that involve dynamic stresses as the mechanism for triggered seismicity at Katmai. Article in Journal/Newspaper Kodiak Alaska University of South Florida St. Petersburg: Digital USFSP Martin Mount ENVELOPE(-63.080,-63.080,-69.615,-69.615) Mount Martin ENVELOPE(-62.250,-62.250,-74.583,-74.583) Trident ENVELOPE(169.233,169.233,-72.433,-72.433) Bulletin of the Seismological Society of America 91 1 57 63 |
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Open Polar |
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University of South Florida St. Petersburg: Digital USFSP |
op_collection_id |
ftusouthflorida |
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topic |
Earth Sciences |
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Earth Sciences Power, J. A. Moran, S. C. McNutt, Stephen R. Stihler, S. D. Sanchez, J. J. Seismic Response of the Katmai Volcanoes to the December 6, 1999 Magnitude 7.0 Karluk Lake Earthquake, Alaska |
topic_facet |
Earth Sciences |
description |
A sudden increase in earthquake activity was observed beneath volcanoes in the Katmai area on the Alaska Peninsula immediately following the 6 December 1999 magnitude (MW) 7.0 Karluk Lake earthquake beneath southern Kodiak Island, Alaska. The observed increase in earthquake activity consisted of small (ML < 1.3), shallow (Z < 5.0 km) events. These earthquakes were located beneath Mount Martin, Mount Mageik, Trident Volcano, and the Katmai caldera and began within the coda of the Karluk Lake mainshock. All of these earthquakes occurred in areas and magnitude ranges that are typical for the background seismicity observed in the Katmai area. Seismicity rates returned to background levels 8 to 13 hours after the Karluk Lake mainshock. The close temporal relationship with the Karluk Lake mainshock, the onset of activity within the mainshock coda, and the simultaneous increase beneath four separate volcanic centers all suggest these earthquakes were remotely triggered. Modeling of the Coulomb stress changes from the mainshock for optimally oriented faults suggests negligible change in static stress beneath the Katmai volcanoes. This result favors models that involve dynamic stresses as the mechanism for triggered seismicity at Katmai. |
format |
Article in Journal/Newspaper |
author |
Power, J. A. Moran, S. C. McNutt, Stephen R. Stihler, S. D. Sanchez, J. J. |
author_facet |
Power, J. A. Moran, S. C. McNutt, Stephen R. Stihler, S. D. Sanchez, J. J. |
author_sort |
Power, J. A. |
title |
Seismic Response of the Katmai Volcanoes to the December 6, 1999 Magnitude 7.0 Karluk Lake Earthquake, Alaska |
title_short |
Seismic Response of the Katmai Volcanoes to the December 6, 1999 Magnitude 7.0 Karluk Lake Earthquake, Alaska |
title_full |
Seismic Response of the Katmai Volcanoes to the December 6, 1999 Magnitude 7.0 Karluk Lake Earthquake, Alaska |
title_fullStr |
Seismic Response of the Katmai Volcanoes to the December 6, 1999 Magnitude 7.0 Karluk Lake Earthquake, Alaska |
title_full_unstemmed |
Seismic Response of the Katmai Volcanoes to the December 6, 1999 Magnitude 7.0 Karluk Lake Earthquake, Alaska |
title_sort |
seismic response of the katmai volcanoes to the december 6, 1999 magnitude 7.0 karluk lake earthquake, alaska |
publisher |
Digital Commons @ University of South Florida |
publishDate |
2001 |
url |
https://digitalcommons.usf.edu/geo_facpub/290 https://doi.org/10.1785/0120000054 |
long_lat |
ENVELOPE(-63.080,-63.080,-69.615,-69.615) ENVELOPE(-62.250,-62.250,-74.583,-74.583) ENVELOPE(169.233,169.233,-72.433,-72.433) |
geographic |
Martin Mount Mount Martin Trident |
geographic_facet |
Martin Mount Mount Martin Trident |
genre |
Kodiak Alaska |
genre_facet |
Kodiak Alaska |
op_source |
School of Geosciences Faculty and Staff Publications |
op_relation |
https://digitalcommons.usf.edu/geo_facpub/290 doi:10.1785/0120000054 https://doi.org/10.1785/0120000054 |
op_doi |
https://doi.org/10.1785/0120000054 |
container_title |
Bulletin of the Seismological Society of America |
container_volume |
91 |
container_issue |
1 |
container_start_page |
57 |
op_container_end_page |
63 |
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1772816249693143040 |