Seismic Imaging and Velocity Estimation
E. Kokinou1, A. Vafidis1, M. Loucogiannakis2,
1 Applied Geophysics Lab. Dep. of
Mineral Resource Eng. Technical Univ. of Crete,
Chania, Greece 73100.
email@example.com ; firstname.lastname@example.org
2 Hellenic Petroleum (Exploration
and Exploitation of Hydrocarbons Division),
Maroussi, Athens, Greece.
3 Dep. Of Geophysics,
University of Athens, Athens.
author. Tel.: +32-8210-37643; Fax:
Abstract: The seismic data from a deep seismic
profiling (DSP) survey in Ionian Sea which
crosses the western border of the Hellenic arc have been reprocessed and
interpreted. The processing flow includes multiple elimination techniques such
as wave equation multiple rejection and adaptive deconvolution.
Special processing helped in delineating
complex structures in the Pre-Apulian and Ionian
zones. Surface consistent deconvolution, Kirchhoff migration and attributes proved useful in imaging
deeper horizons, in the area near the Zakynthos and Kefallinia islands where Mounta
fault constructional structure and Kefallinia diapir are present. In
this area the seismic section indicates that the Plio-Quaternary
sediments are distorted by diapiric movements of high
velocity Triassic evaporates, namely the Kefallinia Diapir. Also
the eastern boundary of Ionian zone is observed under the Mounta
The velocity model along the seismic line
ION-7, which crosses the Ionian basin is also presented. The Moho discontinuity is estimated in the western part of the
seismic section, while Moho reflections are absent in
the eastern part.
Keywords: Ionian basin, deep reflection
profiling, velocity model, stacked section, migrated section.