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Preliminary results of an investigation of crustal structure in Southeastern Europe

NATIONAL OBSERVATORY OF ATHENS SEISMOLOGICAL INSTITUTE, ATHENS, Greece

Abstract

Travel-time curves for the most prominent phases of the longitudinal and shear waves for epicentral distances between zero and 140 km and between 200 km and 1000 km have been constructed for Southeastern Europe. Both refraction and reflection methods indicate a three-layered crust. The average thickness is approximately 16 km for the top layer, 15 for the middle layer and 11 for the lower layer. The crustal thickness varies from about 47 to 32 km from place to place. The extremely low value 0.21 for Poisson's ratio was found in the top as well as in the middle layer.

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