HR: 08:15h
AN: S21C-02    [PDF]
TI: The 2003 Western Anatolia Seismic Experiment: an Integrated Study of Crust/Upper Mantle Structure and Anisotropy in Western Turkey
AU: * Zhu, L
EM: lupei@eas.slu.edu
AF: Saint Louis University, 3507 Laclede Ave, St Louis, MO 63103
AU: Mitchell, B J
EM: bjmitch@eas.slu.edu
AF: Saint Louis University, 3507 Laclede Ave, St Louis, MO 63103
AU: Akyol, N
EM: nihal.akyol@deu.edu.tr
AF: Dokuz Eylul University, Kaynaklar Campus, Buca, Izmir, 12345 Turkey
AB: Western Turkey is one of the most seismically active continental regions in the world and much of it is undergoing extensive north-south extensional deformation. In a cooperative study, seismologists from Saint Louis University and Dokuz Eylul University in Izmir, Turkey, deployed 5 broadband and 24 short-period seismic stations in western Anatolia in November 2002. The high-frequency instruments were located along a NS 100 km long profile with 2 to 3 km station spacing in the central portion of the zone of extension. The remaining instruments were deployed as a regional array distributed throughout the region. All stations record contineously with a sampling rate of 40 samples per second. The recording experiment will last for one year. We plan to use both the linear array and regional array recordings to perform a combined inversion for precise local earthquake location and a tomographic velocity model of the region. We will also determine crustal thicknesses and crust/upper mantle anisotropy using telesesimic earthquakes. Preliminary analysis of the first eight months of teleseismic data has resulted in a 2-D crustal image beneath the linear array which shows that Moho depth varies from 28 km to 32 km.
DE: 7203 Body wave propagation
DE: 7205 Continental crust (1242)
DE: 7218 Lithosphere and upper mantle
DE: 8109 Continental tectonics--extensional (0905)
SC: Seismology [S]
MN: 2003 Fall Meeting