Shionohira Fault characterization using a SIMFIP protocole

塩ノ平断層における断層スリップ試験結果

瀬下 和芳 ; 渡邊 貴央; 青木 和弘 ; 田中 遊雲; Guqlielmi, Y.*; Cook, P.*

Seshimo, Kazuyoshi; Watanabe, Takahiro; Aoki, Kazuhiro; Tanaka, Yukumo; Guqlielmi, Y.*; Cook, P.*

The SIMFIP (Step-Rate Injection Method for Fracture In-situ Properties) was tested for the first time on an active fault. One high level objective of this study is to estimate how efficient this new hydro-mechanical test might be to help estimating the seismic activation potential of faults in Japan The SIMFIP (Step-Rate Injection Method for Fracture In-situ Properties) was tested for the first time on an active fault. One high level objective of this study is to estimate how efficient this new hydro-mechanical test might be to help estimating the seismic activation potential of faults in Japan. The Shionohira fault caused the April 11, 2011 Fukushima-ken Hamadori Earthquake of Mw 6.7 which occurred one month after the Tohoku-Oki earthquake of Mw 9.0. Co-seismic surface ruptures trending NNW-SSE allowed to estimate a normal slip faulting with a 2 m maximum displacement.