Analysis of the Far-Field Co-seismic and Post-seismic Responses Caused by the 2011 M W 9.0 Tohoku-Oki Earthquake

• DOI: 10.1007/s00024-015-1131-9
• Publication Date: 2015-07-09T06:55:53Z
• Authors: Zhigang Shao; Wei Zhan; Langping Zhang; Jing Xu
• Keywords: Geophysics; Geochemistry and Petrology; 13. Climate action; 01 natural sciences; 0105 earth and related environmental sciences

We analyzed the far-field co-seismic response of M W 9.0 Tohoku-Oki earthquake, which occurred on March 11th 2011 at Japan Trench plate boundary. Our analysis indicates that displacement was very sensitive to magnitude this event, and a significant surface from earthquakes in region can be observed Eurasia only for events ≥ 8.0. also temporal characteristics near-field post-seismic deformation caused by afterslip viscoelastic relaxation following earthquake. Next, we performed simulation analyze influence two effects previously mentioned crustal deformation. The results help explain Chinese mainland 1.5 years after event. Fitting revealed decayed exponentially, may eventually disappear 4 years. earthquake will reach same as approximately 10 In addition, co- Coulomb stress several NE-trending faults northeastern northern regions were significantly enhanced because especially Yilan-Yitong Dunhua-Mishan (the section Tan-Lu fault zone) well Yalujiang Fuyu-Zhaodong faults.