HR: 08:40h
AN: T51F-03    [Abstracts]
TI: The Crustal Structure of the Central Anatolia (Turkey) Using Receiver Functions
AU: Yelkenci, S
EM: seda.yelkenci@boun.edu.tr
AF: Bogazici University, Kandilli Observatory and Earthquake Research Institute, Department of Geophysics, Istanbul, 81220 Turkey
AU: * Benoit, M
EM: mbenoit@erl.mit.edu
AF: MIT, Earth Resources laboratory, Cambridge, MA 02142 United States
AU: Kuleli, H
EM: kuleli@erl.mit.edu
AF: MIT, Earth Resources laboratory, Cambridge, MA 02142 United States
AU: Gurbuz, C
EM: gurbuz@boun.edu.tr
AF: Bogazici University, Kandilli Observatory and Earthquake Research Institute, Department of Geophysics, Istanbul, 81220 Turkey
AB: Central Anatolia lies in a transitional region between the extensional tectonics of western Anatolia and the complex transpressional tectonics of Eastern Anatolia, and has a complicated thermal and structural history. Few studies of the crustal structure of Anatolia have been performed, however, studies of the crustal structure of Eastern Anatolia showed that crustal thicknesses were thinner than previously thought. To further investigate the crustal structure in Central Anatolia, we present results from receiver function analysis using new data from broad-band instruments. The stations were equipped with 7 broadband three-component STS-2 and 13 short period three-component S-13 sensors. These stations operated for period of one and half months between the October and November, 2002, and yielded data for ~ 40 high quality receiver functions. Additionally, receiver functions were also computed using data from permanent stations MALT, ISP, and ANTO. We applied the hk-stacking technique of Zhu and Kanamori (2000) to receiver functions to obtain the crustal thickness and Vp/Vs ratios. Furthermore, we applied a waveform modeling technique to investigate mid-crustal discontinuties previously imaged in the region. Our results compare well with refraction-based crustal thicknesses in overlapped areas.
DE: 7218 Lithosphere (1236)
DE: 7230 Seismicity and tectonics (1207, 1217, 1240, 1242)
DE: 7270 Tomography (6982, 8180)
DE: 8038 Regional crustal structure
DE: 8194 Instruments and techniques
SC: Tectonophysics [T]
MN: Fall Meeting 2005