Geologic implications of great interplate earthquakes along the Aleutian arc
Journal Article
·
· Journal of Geophysical Research
- Geological Survey, Menlo Park, CA (United States)
We present new marine geophysical observations and synthesize previous geologic interpretations of the Aleutian arc to show that the epicenters of these great thrust-type earthquakes coincide with upper plate segments of the arc characterized by a coherent forearc structural fabric. We propose that variations in upper plate structural strength and mobility affect the mechanical properties of the interplate thrust zone and need to be considered in localizing interplate asperities. Forearc tectonic segmentaion associated with the partitioning of strike-slip and thrust motions may exert long-term controls on the rates of seismic moment release.
- Sponsoring Organization:
- USDOE
- OSTI ID:
- 79474
- Journal Information:
- Journal of Geophysical Research, Journal Name: Journal of Geophysical Research Journal Issue: B12 Vol. 98; ISSN JGREA2; ISSN 0148-0227
- Country of Publication:
- United States
- Language:
- English
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Journal Article
·
Wed Nov 09 23:00:00 EST 1983
· J. Geophys. Res.; (United States)
·
OSTI ID:6979309
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Conference
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Mon Dec 31 23:00:00 EST 1984
· Geol. Soc. Am., Abstr. Programs; (United States)
·
OSTI ID:6032056
Body wave and surface wave analysis of large and great earthquakes along the Eastern Aleutian arc, 1923-1993: Implications for future events
Journal Article
·
Fri Jun 10 00:00:00 EDT 1994
· Journal of Geophysical Research
·
OSTI ID:86732