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Improved implementation of rupture location uncertainty in fault displacement hazard assessment

Rui Chen and Mark D. Petersen
Improved implementation of rupture location uncertainty in fault displacement hazard assessment
Bulletin of the Seismological Society of America (July 2019) 109 (5): 2132-2137

Abstract

This short note proposes an improvement to the implementation of uncertainty associated with rupture location from future earthquakes in probabilistic fault displacement hazard analysis. Location uncertainty leads to nonzero primary fault displacement near a mapped fault. With the improved implementation of location uncertainty, estimated fault displacement hazard at a given site is affected strongly by the dimension of the area considered (or the footprint size of the structure). A larger area near a mapped fault has greater potential of exhibiting primary fault displacement than does a smaller area at the same location. In addition, fault displacement hazard is affected by fault-map quality and fault-trace complexity. For a more accurately mapped fault with simpler geometry, larger fault displacement is expected directly over and in close proximity of the mapped fault. If fault location is highly uncertain and fault traces are complex, expected displacement is spread out in a wider zone along the mapped fault.


ISSN: 0037-1106
EISSN: 1943-3573
Coden: BSSAAP
Serial Title: Bulletin of the Seismological Society of America
Serial Volume: 109
Serial Issue: 5
Title: Improved implementation of rupture location uncertainty in fault displacement hazard assessment
Affiliation: California Geological Survey, Sacramento, CA, United States
Pages: 2132-2137
Published: 20190716
Text Language: English
Publisher: Seismological Society of America, Berkeley, CA, United States
References: 14
Accession Number: 2019-062172
Categories: SeismologyStructural geology
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus.
Secondary Affiliation: U. S. Geological Survey, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2019, American Geosciences Institute. Abstract, Copyright, Seismological Society of America. Reference includes data from GeoScienceWorld, Alexandria, VA, United States
Update Code: 201932
Program Name: USGSOPNon-USGS publications with USGS authors
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