HR: 1340h
AN: S53B-1102    [Abstracts]
TI: A numerical approach for the study of the East Anatolian seismic region
AU: * Antonioli, A
EM: antonioli@ingv.it
AF: University of Ulster, Cromore Road, Coleraine, BT52 1SA United Kingdom
AU: Cianetti, S
EM: cianetti@ingv.it
AF: Istituto Nazionale di Geofisica e Vulcanologia, via di Vigna Murata, 605, Rome, 00143 Italy
AU: Nalbant, S
EM: ss.nalbant@ulster.ac.uk
AF: University of Ulster, Cromore Road, Coleraine, BT52 1SA United Kingdom
AU: Steacy, S
EM: s.steacy@ulster.ac.uk
AF: University of Ulster, Cromore Road, Coleraine, BT52 1SA United Kingdom
AU: McCloskey, J
EM: j.mccloskey@ulster.ac.uk
AF: University of Ulster, Cromore Road, Coleraine, BT52 1SA United Kingdom
AU: Giunchi, C
EM: giunchi@ingv.it
AF: Istituto Nazionale di Geofisica e Vulcanologia, via di Vigna Murata, 605, Rome, 00143 Italy
AB: In 2003 an event M=6.5 occurred in the structurally complex Bingol region, Eastern Turkey, with a right-lateral strike-slip mechanism. This earthquake is not compatible with Coulomb stress changes due to the preceding large events and regional stress loading computed with deep-slip or virtual slip approaches over the 2003 rupture area since 1784. Applying a 2D finite element numerical model we assess the role of the complex regional fault network in the overall detected deformation of the area, comparing the predicted displacements to the GPS observations. In addition, we investigate the sensitivity of our model to the rotation of regional stress principal axis and to the rheological heterogeneities of the area.
DE: 0560 Numerical solutions (4255)
DE: 7223 Earthquake interaction, forecasting, and prediction (1217, 1242)
DE: 7230 Seismicity and tectonics (1207, 1217, 1240, 1242)
DE: 8111 Continental tectonics: strike-slip and transform
SC: Seismology [S]
MN: Fall Meeting 2005