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Recurrence intervals for great earthquakes of the past 3,500 years at northeastern Willapa Bay, Washington

Professional Paper 1576

By:
,

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Abstract

Seven great earthquakes, or earthquake series, probably ruptured the southern Washington part of the Cascadia subduction zone in the past 3,500 years. Each earthquake was probably of magnitude 8 or larger. The earthquakes define six recurrence intervals that average about 500 years. The longest interval, about 700-1300 years, was followed by two of the shortest, which together lasted less than 800 years. Another long interval, 600-1000 years, ended with an earthquake 300 years ago.

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Recurrence intervals for great earthquakes of the past 3,500 years at northeastern Willapa Bay, Washington
Series title:
Professional Paper
Series number:
1576
Edition:
-
Year Published:
1997
Language:
ENGLISH
Publisher:
U.S. G.P.O. ; Information Services [distributor],
Description:
108 p.