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The December 1872 Washington State earthquake

William H. Bakun, Ralph A. Haugerud, Margaret G. Hopper and Ruth S. Ludwin
The December 1872 Washington State earthquake
Bulletin of the Seismological Society of America (December 2002) 92 (8): 3239-3258


The largest historical earthquake in eastern Washington occurred on 15 December 1872. We used Modified Mercalli intensity (MMI) assignments for 12 twentieth-century earthquakes to determine attenuation relations for different regions in the Pacific Northwest. MMI attenuation for propagation paths east and west of the Cascade Mountains differs significantly only for epicentral distances greater than about 225 km. We used these attenuation relations and the MMI assignments for the 15 December 1872 earthquake to conclude that its epicentral region was east of the Cascade Mountains near Lake Chelan, Washington, and most probably near the south end of Lake Chelan. The intensity magnitude, M (sub I) is 6.8 and moment magnitude, M, is 6.5-7.0 at the 95% confidence level.

ISSN: 0037-1106
EISSN: 1943-3573
Serial Title: Bulletin of the Seismological Society of America
Serial Volume: 92
Serial Issue: 8
Title: The December 1872 Washington State earthquake
Affiliation: U. S. Geological Survey, Menlo Park, CA, United States
Pages: 3239-3258
Published: 200212
Text Language: English
Publisher: Seismological Society of America, Berkeley, CA, United States
References: 88
Accession Number: 2003-031006
Categories: Seismology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. 2 tables, geol. sketch maps
N47°30'00" - N48°30'00", W120°30'00" - W119°45'00"
Secondary Affiliation: University of Washington, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2018, American Geosciences Institute.
Update Code: 200310
Program Name: USGSOPNon-USGS publications with USGS authors
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