caa a22 4500 47581407X CHVBK 20180406123805.0 cr unu---uuuuu 170329e20001201xx s 000 0 eng 10.1007/PL00001072 doi (NATIONALLICENCE)springer-10.1007/PL00001072 Spontaneous Rupture Propagation on a Non-planar Fault in 3-D Elastic Medium [Elektronische Daten] [H. Aochi, E. Fukuyama, M. Matsu'ura] —We constructed a new calculation scheme of spontaneous rupture propagation on non-planar faults in a 3-D elastic medium using a boundary integral equation method (BIEM) in time domain. We removed all singularities in boundary integral equations (BIEs) following the method proposed by Fukuyama and Madariaga (1995, 1998) for a planar fault in a 3-D elastic medium, and analytically evaluated all BIEs for a basic box-like discrete source. As an application of the new calculation scheme, we simulated rupture propagation on a bending fault subjected to uniform triaxial compression and examined the effect of fault bend upon the dynamic rupture propagation. From the numerical results, we found that rupture propagation is decelerated or arrested for some combination of inclined angle of the bending fault and absolute value of the fault strength. The most significant effect of bending is the nonuniform distribution of pre-loaded shear stress due to different orientation of the fault plane under a uniform tectonic stress regime. Our results also indicate that low absolute shear stress level is required to progress the rupture propagation ahead of the inclined fault. Birkhauser Verlag Basel,, 2000 Key Words: Boundary integral equation, spontaneous rupture propagation, non-planar fault nationallicence Aochi H. Department of Earth and Planetary Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. E-mail: matsuura@eps.s.u-tokyo.ac.jp, JP aut Fukuyama E. National Research Institute for Earth Science and Disaster Prevention, 3-1 Tennodai, Tsukuba, Ibaraki 305-0811, Japan. E-mail: fuku@bosai.go.jp, JP aut Matsu'ura M. Department of Earth and Planetary Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. E-mail: matsuura@eps.s.u-tokyo.ac.jp, JP aut https://doi.org/10.1007/PL00001072 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/PL00001072 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Aochi H. Department of Earth and Planetary Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. E-mail: matsuura@eps.s.u-tokyo.ac.jp, JP aut NATIONALLICENCE 700 1- Fukuyama E. National Research Institute for Earth Science and Disaster Prevention, 3-1 Tennodai, Tsukuba, Ibaraki 305-0811, Japan. E-mail: fuku@bosai.go.jp, JP aut NATIONALLICENCE 700 1- Matsu'ura M. Department of Earth and Planetary Physics, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. E-mail: matsuura@eps.s.u-tokyo.ac.jp, JP aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer