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Characterizing an "uncharacteristic" ETS event in northern Cascadia

Geophysical Research Letters

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Abstract

GPS and borehole strainmeter data allowed the detection and model characterization of a slow slip event in northern Cascadia in November 2006 accompanying a brief episode of seismic tremor. The event is much smaller in area and duration than other well-known ETS events in northern Cascadia but is strikingly similar to typical ETS events at the Nankai subduction zone. The 30-45 km depth range and the 2-3 cm slip magnitude as interpreted for this event appear to be common to most ETS events in these two subduction zones, regardless of their sizes. We infer that the Nankai-type small ETS events must be abundant at Cascadia and that ETS events at the two subduction zones are governed by a similar physical process.

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Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Characterizing an "uncharacteristic" ETS event in northern Cascadia
Series title:
Geophysical Research Letters
Volume
35
Year Published:
2008
Language:
English
Publisher:
American Geophysical Union
Publisher location:
Washington, D.C.
Contributing office(s):
Earthquake Science Center
Description:
5 p.
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
First page:
L15303
Country:
United States
Other Geospatial:
Northern Cascadia