STP1283

    Revisiting the Characterization of Seismic Hazard Using Geostatistics: A Perspective after the 1994 Northridge, California Earthquake

    Published: Jan 1996


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    Abstract

    An indicator kriging model of seismic hazard for southern California, based on the time period 1930 – 1971, is developed. This hazard assessment is evaluated in light of the occurrence of more recent, moderate earthquakes: the 1987 Whittier Narrows, the 1990 Upland, and the 1994 Northridge earthquakes. The hazard map shows relatively poor spatial correlation between regions of high hazard and known, active faults. A hypothesis is developed, however, suggesting that high seismic hazard in southern California is a function of spatial proximity to all active faults, not to any one active fault.

    Keywords:

    seismic hazard, modified Mercalli intensity, southern California, kriging, semivariogram, indicator functions


    Author Information:

    Carr, JR
    Professor, University of Nevada, Reno, NV


    Paper ID: STP16124S

    Committee/Subcommittee: D18.01

    DOI: 10.1520/STP16124S


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