The Athens 1999 mainshock (Mw=5.9)and the evolution of its aftershock sequence

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Publiée : Jan 1, 2001
DOI : https://doi.org/10.12681/bgsg.17266
C. B. PAPAZACHOS
Dept. of Geophysics, School of Geology, Aristotle University of Thessaloniki
B. G. KARAKOSTAS
Dept. of Geophysics, School of Geology, Aristotle University of Thessaloniki
G. F. KARAKAISIS
Dept. of Geophysics, School of Geology, Aristotle University of Thessaloniki
CH. A. PAPAIOANNOU
Inst, of Seismology & Earthquake Engineering
Résumé

The spatial distribution of the aftershocks that followed the September 1999 mainshock (Mw=5.9), which caused severe damage and loss of life in the nearby city of Athens, is examined in the present work. Ρ and S arrivals of seismic waves recorded by the permanent seismic network as well as by a number of digital seismographs and accelerographs, which had been deployed in the broader epicentral area shortly after the mainshock occurrence, were used for the determination of the focal parameters of the mainshock and its aftershocks. The spatial distribution of the aftershocks led to the recognition of the fault, which produced the September mainshock, while certain features of the rupture process may be deduced on the basis of their spatiotemporal variation

Article Details
  • Rubrique
  • Seismology
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