Rupture zones in the Aegean region

Rupture zones of strong shallow earthquakes can be investigated by field observations of surface fault traces (SF), accurate location of spatial clusters of aftershocks or other small earthquakes (CL), reliable fault plane solutions (FP) and information on the spatial distribution of sites with high...

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Bibliographic Details
Published in:Tectonophysics 1999-07, Vol.308 (1), p.205-221
Main Authors: Papazachos, B.C, Papaioannou, C.A, Papazachos, C.B, Savvaidis, A.S
Format: Article
Language:English
Subjects:
Aegean area
Brackish
Freshwater
macroseismic data
Marine
rupture zones
stress-field
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Summary:Rupture zones of strong shallow earthquakes can be investigated by field observations of surface fault traces (SF), accurate location of spatial clusters of aftershocks or other small earthquakes (CL), reliable fault plane solutions (FP) and information on the spatial distribution of sites with high ( I ≥ VIII) macroseismic intensities (MA). The validity of these four techniques was successfully tested by comparing the results of their application to several cases of strong shallow earthquakes. These techniques were then applied to spatially define the rupture zones of 150 strong ( M≥6.0) shallow earthquakes in the Aegean and surrounding area. The type of faulting was determined for all these zones by the use of reliable fault plane solutions, which are available for this area. The orientation of most of these rupture (fault) zones is in good agreement with the presently acting stress field with some exceptions which are attributed to the rupture of pre-existing faults. The tectonic implications of these zones are discussed.
ISSN:0040-1951
1879-3266
DOI:10.1016/S0040-1951(99)00073-6