Accession Number:

AD0669821

Title:

ON QUANTITATIVE DETERMINATION OF EARTHQUAKE RISK,

Descriptive Note:

Corporate Author:

NATIONAL OBSERVATORY OF ATHENS (GREECE) SEISMOLOGICAL INST

Personal Author(s):

Report Date:

1968-02-01

Pagination or Media Count:

18.0

Abstract:

A method is proposed for the calculation of a comparable measure of the earthquake risk from the coefficient a of the NM-relation normalized to a standard slope, b, and a standard area. In comparing the earthquake risk in Greece and Southern California, it was found that the average and the maximum earthquake risk in the area of Greece is about one half and two times, respectively, the average earthquake risk in Southern California. Another method is proposed for the calculation of the recurrence rates for earthquakes of a given magnitude range in small areas for which the existing earthquake magnitude data is not abundant and good enough for determining a reliable recurrence curve. In view of the large fluctuation of the actual recurrence rates for earthquakes of a given magnitude-disregarding the accuracy of the available data-mapping in the form of the earthquake frequency isolines seems to be meaningless for engineering purposes. Author

Subject Categories:

  • Seismology
  • Statistics and Probability

Distribution Statement:

APPROVED FOR PUBLIC RELEASE