Models of downdip frictional coupling for the Cascadia Megathrust

Geophysical Research Letters
By:  and 

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Abstract

We have developed models of downdip frictional coupling along two transects across the Cascadia subduction zone in northern Washington and central Oregon. The models involve complicated downdip coupling profiles. Although not unique, our models closely predict available GPS shortening rates and vertical uplift data. We are able to explain relatively low horizontal shortening rates along the Washington coast and small vertical uplift rates in central Oregon. Our models depart from previous models by inclusion of a deeply coupled region assumed to be related to mafic rocks in both the upper and lower plates of the thrust.

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Publication type Article
Publication Subtype Journal Article
Title Models of downdip frictional coupling for the Cascadia Megathrust
Series title Geophysical Research Letters
DOI 10.1029/1999GL005441
Volume 27
Issue 10
Year Published 2000
Language English
Publisher American Geophysical Union
Description 4 p.
First page 1551
Last page 1554
Country United States
State Oregon, Washington
Other Geospatial Cascadia subduction zone
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