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Earthquake Spectra 27, pp. 315-330 (2011); doi:http://dx.doi.org/10.1193/1.3583676

Estimating Surface Faulting Impacts from the ShakeOut Scenario Earthquake

Jerome A. Treiman1 and Daniel J. Ponti2

1California Geological Survey, 888 S. Figueroa St., suite 475, Los Angeles, CA 90017
2U.S. Geological Survey, 345 Middlefield Rd., MS 977, Menlo Park, CA 94025

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An earthquake scenario, based on a kinematic rupture model, has been prepared for a Mw 7.8 earthquake on the southern San Andreas Fault. The rupture distribution, in the context of other historic large earthquakes, is judged reasonable for the purposes of this scenario. This model is used as the basis for generating a surface rupture map and for assessing potential direct impacts on lifelines and other infrastructure. Modeling the surface rupture involves identifying fault traces on which to place the rupture, assigning slip values to the fault traces, and characterizing the specific displacements that would occur to each lifeline impacted by the rupture. Different approaches were required to address variable slip distribution in response to a variety of fault patterns. Our results, involving judgment and experience, represent one plausible outcome and are not predictive because of the variable nature of surface rupture.

© 2011 Earthquake Engineering Research Institute

KEYWORDS and PACS

PACS

  • 89.20.Kk

    Engineering

  • 46.70.-p

    Application of continuum mechanics to structures

  • 46.55.+d

    Tribology and mechanical contacts

  • 46.50.+a

    Fracture mechanics, fatigue and cracks

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ARTICLE DATA

History
Received 31 December 2009
Accepted 02 October 2010

PUBLICATION DATA

ISSN

8755-2930 (print)  

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