Methodological approach to earthquake location procedures: application to Italian seismicity

Details Methodological approach to earthquake location procedures: application to Italian seismicity Methodological approach to earthquake location procedures: application to Italian seismicity

Dec 1992

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1992pepi...75..153c&link_type=abstract

Physics of the Earth and Planetary Interiors, Volume 75, Issue 1-3, p. 153-164.

Physics

3

Scientific paper

The joint hypocenter determination (JHD) and a standard location procedure are compared in an effort to determine the relative accuracy of the two techniques. The JHD technique was applied to two Italian regions affected by large azimuthal gaps in station distribution and/or poor knowledge of the seismic velocity model. The two techniques show large differences concerning the depth estimations. For many events the standard location method has problems of convergence, requiring the use of procedures blocking the variation of depth in some instances. As a result of synthetic data analysis, we observed that the use of the JHD technique reduces the influence of the seismic velocity model and of random reading errors.

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