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Characterizing an "uncharacteristics" ETS event in northern Cascadia

January 1, 2008

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 event at the two subduction zones are governed by a similar physical process. Copyright 2008 by the American Geophysical Union.

Publication Year 2008
Title Characterizing an "uncharacteristics" ETS event in northern Cascadia
DOI 10.1029/2008GL034415
Authors K. Wang, H. Dragert, H. Kao, E. Roeloffs
Publication Type Article
Publication Subtype Journal Article
Series Title Geophysical Research Letters
Index ID 70033273
Record Source USGS Publications Warehouse