HR: 08:55h
AN: T51F-04    [Abstracts]
TI: Crustal Structure and P and S Wave Velocities in Central Turkey
AU: * Kuleli, H
EM: kuleli@erl.mit.edu
AF: MIT, E34-562, 42 Carleton St, Cambridge, MA 02142 United States
AU: Toksoz, M
EM: toksoz@mit.edu
AF: MIT, E34-562, 42 Carleton St, Cambridge, MA 02142 United States
AU: Gurbuz, C
EM: gurbuz@koeri.boun.edu.tr
AF: Bogazici University, Kandilli Observatory, Cengelkoy, Istanbul, 81220 Turkey
AB: Seismic travel-times and synthetic seismograms were used to determine the structure and P and S wave velocities in the crust and uppermost mantle in Central Turkey. Data from five well-placed explosions and a half dozen quarry blasts were used to obtain long refraction profiles. In addition, seismograms from several well-located earthquakes were utilized for shear wave observations. Data were analyzed using 3-D travel-time analysis, ray-based synthetic seismograms, and matching elastic full waveform earthquake seismograms. Travel-time data used for generating the initial model and the synthetic seismograms were used to validate and refine the models. The results of the reflection studies show that crustal thickness varies between 37 and 40 km. The Pn velocity is about 7.9 km/s in Central Anatolia. Shear velocities complement the P wave velocities.
DE: 1734 Seismology
DE: 7203 Body waves
DE: 7218 Lithosphere (1236)
DE: 7230 Seismicity and tectonics (1207, 1217, 1240, 1242)
SC: Tectonophysics [T]
MN: Fall Meeting 2005