HR: 1340h
AN: S13B-1300    [Abstracts]
TI: Static Stress Transfer between the Chinshan and Sanchiao Faults in the Taipei Metropolitan Area
AU: * Wang, J
EM: jcwang@mail.chna.edu.tw
AF: Chia Nan University of Pharmacy & Science, 60 ,Erh-Jen RD .,Sec.1 ,Jen-Te ,Tainan, Taiwan, 717,
AU: Wang, J
EM: jhwang@earth.sinica.edu.tw
AF: Institute of Earth Sciences, Academia Sinica, 128 Academia Road Sec. 2, Nankang Taipei, Taiwan, 115,
AU: Shieh, C
EM: seifent@eq.ccu.edu.tw
AF: Institute of Seismology, National Chung-Cheng University, 168, University Rd., Min-Hsiung, Chia-Yi, Taiwan, 621,
AU: Yeh, Y
EM: yehyh@earth.sinica.edu.tw
AF: Institute of Earth Sciences, Academia Sinica, 128 Academia Road Sec. 2, Nankang Taipei, Taiwan, 115,
AB: In the Taipei Metropolitan Area, there is a significant problem to be resolved: Can two major active faults, i.e., the Chinshan and Sanchiao faults, in the area fail simultaneously? The former is a thrust fault and the latter a normal one. Hence, static stress transfer between a normal fault and a thrust one is a significant problem. In this work, we study this problem by computing the static Coulomb failure stress changes on a fault plane due to a failure on the other. Numerical computations are conducted for the combinations of three different dip and rake angles of the two fault planes. Results show that the no matter which one break first, the other can be triggered in some conditions, and rupture propagates northward for the Chinshan fault and southward for the Sanchiao fault. A failure on a less steep normal (Sanchiao) fault is more capable of trigging a steeper thrust (Chinshan) fault, and vice verse.
DE: 1734 Seismology
DE: 1744 Tectonophysics
SC: Seismology [S]
MN: 2007 Fall Meeting