S-WAVE SPECTRAL ANALYSIS AND ESTIMATION OF SPECTRAL PARAMETERS IN NORTHWESTERN GREECE

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Published: Jul 27, 2016
DOI: https://doi.org/10.12681/bgsg.11829
Keywords:
Microseismicity source parameters Epirus stress drop Brune model
O. Stavroulopoulou
University of Patras, Faculty of Geology, Seismological Laboratory
E. Sokos
University of Patras, Faculty of Geology, Seismological Laboratory
G.A. Tselentis
University of Patras, Faculty of Geology, Seismological Laboratory
Abstract

During a 12-month period (August 1998 - June 1999), a dense microseismic network of 44 portable seismographs, was installed in Epirus - Northwestern Greece, by the Seismological Laboratory, of the University of Patras and recorded 1368 earthquakes. We selected a subset of 200 well recorded events, with duration magnitude ranging from 1.61 to 2.92 and focal depths ranging from a few hundred meters to 35km; the majority was in the 0-10km range. This study uses this high quality dataset to (i)calculate the earthquake spectra and source parameters; (ii) perform linear regression between Seismic Moment (M0) and the source parameters Source Radius (r), Stress Drop (Δσ) and Displacement (s); (iii) correlate source parameter’s distribution with the tectonics of the area. Finally, we compare the derived empirical laws with similar studies.

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  • Geophysics and Seismology
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