Annals of Geophysics (Jun 1997)

Crustal structure of the Gulf of Corinth in Central Greece, determined from magnetotelluric soundings

  • G. N. Stavrakakis,
  • P. Bernard,
  • D. Boyer,
  • V. N. Pham,
  • G. Chouliaras

DOI
https://doi.org/10.4401/ag-3935
Journal volume & issue
Vol. 40, no. 1

Abstract

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The magnetotelluric sounding method at 15 sites was employed to investigate the electrical properties of the crust and upper mantle near the epicentral region of the June 15 1995, Ms = 6.1, destructive earthquake in the Gulf of Corinth, Central Greece. The magnetotelluric results indicate the presence of a conductive zone in the mid-crust at a depth of 9 to 12 km near the seismogenetic region. The existence of this zone with a thickness of around 7 km can be explained by the presence of fluids in a zone of ductile shear. A second electrical discontinuity was also found at a depth of about 28 km and this may well correspond to the Moho below the Gulf of Corinth.

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