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APPLICATION OF STEPP METHOD FOR ASSESSING THE COMPLETENESS OF INSTRUMENTAL AND PRE-INSTRUMENTAL EARTHQUAKE DATA IN DIFFERENT SEISMIC PROVINCES OF IRAN

Publish Year: 1394
Type: Conference paper
Language: English
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SEE07_109

Index date: 19 December 2020

APPLICATION OF STEPP METHOD FOR ASSESSING THE COMPLETENESS OF INSTRUMENTAL AND PRE-INSTRUMENTAL EARTHQUAKE DATA IN DIFFERENT SEISMIC PROVINCES OF IRAN abstract

Seismic hazard assessments are effected by large uncertainties derived from instrumental and pre-instrumental data. One of a significant source of uncertainties is the incompleteness of historical seismic records. Thus, checking the completeness for different magnitude levels is a paramount step in seismic hazard assessment. In this paper STEPP method has been proposed for checking the completeness of seismic catalogues. For this purpose, different de-clustering methods were tested on composite homogenized catalogue of Iran and then Gardner & Knopoff was selected as a final choice for de-clustering the catalogue. Using the STEPP method, the interval in a magnitude class over which the class is complete was determined. After dividing the seismic data, the magnitude of completeness (Mc), defined as the lowest magnitude above which 100% of all events in a given region are detected, is found by maximum curvature method from the complete part of the catalogue.

APPLICATION OF STEPP METHOD FOR ASSESSING THE COMPLETENESS OF INSTRUMENTAL AND PRE-INSTRUMENTAL EARTHQUAKE DATA IN DIFFERENT SEISMIC PROVINCES OF IRAN Keywords:

APPLICATION OF STEPP METHOD FOR ASSESSING THE COMPLETENESS OF INSTRUMENTAL AND PRE-INSTRUMENTAL EARTHQUAKE DATA IN DIFFERENT SEISMIC PROVINCES OF IRAN authors

Mona SALAMAT

Seismological Research Center, International Institute of Earthquake Engineering and Seismology, Tehran, Iran

Mehdi ZARE

Seismological Research Center, International Institute of Earthquake Engineering and Seismology, Tehran, Iran