Open AccessOn quantitative determination of earthquake risk
Author(s) -
A. G. Galanopoulos
Publication year - 2011
Publication title -
annals of geophysics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.394
H-Index - 60
eISSN - 2037-416X
pISSN - 1593-5213
DOI - 10.4401/ag-5064
Subject(s) - magnitude (astronomy) , earthquake magnitude , seismology , geology , earthquake prediction , range (aeronautics) , seismic risk , statistics , geodesy , mathematics , engineering , geometry , physics , astronomy , scaling , aerospace engineering
A method is proposed for the calculation of a comparable
measure of the earthquake risk from the coefficient- a* of the N(M)-
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 are 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
measure of the earthquake risk from the coefficient- a* of the N(M)-
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 are 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