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Moment-tensor inversions for local earthquakes using surface waves recorded at TERRAscope

Thio, Hong Kie and Kanamori, Hiroo (1995) Moment-tensor inversions for local earthquakes using surface waves recorded at TERRAscope. Bulletin of the Seismological Society of America, 85 (4). pp. 1021-1038. ISSN 0037-1106. https://resolver.caltech.edu/CaltechAUTHORS:20140806-095547067

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Abstract

We have developed a method to determine moment tensors for local earthquakes using short period (10 to 50 sec) surface waves recorded at TERRAscope stations. To correct for the substantial lateral variations in crustal structure, we applied phase corrections to the data using a regionalized phase-velocity model. We have determined moment tensors for over 180 events in the last 3 yr in southern California for magnitudes as small as 3.2 and as large as 6.5. The results are consistent with those obtained from first-motion data as well as other waveform inversions. When continuous data telemetry from the stations becomes available this method can yield moment tensors for earthquakes in southern California and adjacent regions within minutes after the occurrence of an event. Our results confirm the relation log M_o (seismic moment) ∝ 1.5M_L (local magnitude) obtained by an earlier study.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://bssa.geoscienceworld.org/content/85/4/1021.abstractPublisherArticle
ORCID:
AuthorORCID
Kanamori, Hiroo0000-0001-8219-9428
Additional Information:© 1995 Seismological Society of America. Manuscript received 28 March 1994. We would like to thank the people responsible for the daily operation of the Southern California Seismic Network for their help. This work was partially supported by USGS Grant Number 1434-93-G-2287. Division of Geological and Planetary Sciences Contribution Number 5467.
Funders:
Funding AgencyGrant Number
USGS1434-93-G-2287
Other Numbering System:
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Caltech Division of Geological and Planetary Sciences5467
Issue or Number:4
Record Number:CaltechAUTHORS:20140806-095547067
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20140806-095547067
Official Citation:Hong Kie Thio and Hiroo Kanamori Moment-tensor inversions for local earthquakes using surface waves recorded at TERRAscope Bulletin of the Seismological Society of America, August 1995, v. 85, p. 1021-1038
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:48058
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:06 Aug 2014 17:09
Last Modified:09 Mar 2020 13:18

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