Seismic hazard assessment for the Caucasus test area

S. Balassanian, T. Ashirov, T. Chelidze, A. Gassanov, N. Kondorskaya, G. Molchan, B. Pustovitenko, V. Trifonov, V. Ulomov, D. Giardini


The GSHAP CAUCAS test area was established under the INTAS Ct.94-1644 (Test Area for sismic Hazard Assessment in the Caucasus) and NATO ARW Ct.95-1521 (Historical and Prehistorical Earthquakes in the Caucasus), with the initial support of IASPEI, UNESCO and ILP. The high tectonic interest and seismicity rate of the whole area, the availability of abundant multi-disciplinary data and the long established tradition in hazard assessment provide a unique opportunity to test different methodologies in a common test area and attempt to establish some consensus in the scientific community. Starting from the same input data (historical and instrumental seismic catalogue, lineament and homogeneous seismic source models) six independent approaches to seismic hazard assessment have been used, ranging from pure historical deterministic to seismotectonic probabilistic and areal assessment methodologies. The results are here compared.


Seismic hazard assessment;Caucasus;historical earthquake;UN/IDNDR;active faults

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Published by INGV, Istituto Nazionale di Geofisica e Vulcanologia - ISSN: 2037-416X