TITLE:
Determination of the Crust and Upper-Mantle Structure in Anatolia by Surface Wave Data
AUTHORS:
Nilgun Sayil
KEYWORDS:
Anatolia, Group Velocity Dispersion, Surface Waves, Discrimination Filter
JOURNAL NAME:
Natural Science,
Vol.6 No.12,
August
18,
2014
ABSTRACT: In
this study, the crust and upper mantle structure of Anatolia have been
investigated by measuring the group velocity dispersion data of discriminated
seismic surface waves. In the scope of the study, it has selected the profiles
between six stations located in western Anatolia of Bogazici University
Kandilli Observatory Earthquake Research Institute, national network of Turkey,
and records of an earthquake (having about 10° epicentral distance) occurred in
the eastern of Anatolia have been used. Firstly, surface wave discrimination
filter based on the polarization properties has been applied tothree-component
recordsand emphasized to surface
waves. Then the group velocities have been calculated by multiple filter
technique. A five-layered crustal model having total thickness of 38 - 40 km
and Pn-wave velocity of 8.00 km/sec in the upper-mantle has been determined
through inversion of surface wave group velocity dispersion data in the period range
of 10 sec to 60 sec.