JOURNAL OF THE BALKAN GEOPHYSICAL
SOCIETY, Vol. 2, No 1, February 1999, p. 3-14, 8 figs.
A study of shallow
crustal structure in the Mygdonia Basin (N. Greece)
based on the dispersion
curves of Rayleigh waves
E.E. Karagianni *, D.G.
Panagiotopoulos*, C.B. Papazachos**, and P.W. Burton***
* Geophysical Laboratory,
University of Thessaloniki, Thessaloniki, Greece, GR- 54006.
** Institute of Engineering
Seismology and Earthquake Engineering, Georg.Scholis 46, P.O. Box
53, GR-55102 Finikas, Thessaloniki, Greece.
*** University of East Anglia, School
of Environmental Sciences, Norwich NR4 7TJ, U.K.
(Received 17 September 1998; accepted
20 October 1998 )
Abstract : A big shot experiment
was carried out in the Mygdonia basin during the project "EUROSEISTEST
VOLVI-THESSALONIKI, a European test site for Engineering Seismology,
Earthquake and Seismology". This experiment was realised by using
an explosion of 75 kg of explosives placed at 20 m depth. The aim
of the explosion was to investigate the geometry and the VS
profile across the valley, between the villages Profitis and
Stivos which are laid between the lakes Koronia (Lagada) and Volvi
in Northern Greece. The records of Rayleigh waves as they were generated
by the big shot and recorded on the vertical components of the portable
stations which were installed in Mygdonia basin, were analysed in
order to obtain the group velocity dispersion curves corresponding
to propagation paths between the shot point and the recording stations.
Furthermore, these dispersion curves were inverted to determine
the shear wave velocity models along the propagation paths by using
Key Words: Shallow Crustal Structure,
Dispersion Curves, Rayleigh Waves, Mygdonia Basin