The paper of Dr. Ikeda and Assoc. Prof. Tsuji was published in "Journal of Geophysical Research"

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The paper of Dr. Ikeda and Assoc. Prof. Tsuji was published in “Journal of Geophysical Research“.


In this paper, we estimated crack orientation and stress distribution from surface wave anisotropy. We also demonstrated the possibility of change in stress-field during the 2011 Tohoku-oki earthquake. The proposed method can be used for detecting and monitoring leakage path of injected CO2. This study contributes to realization of CCS suitable for heterogeneous geological formations typical of Japan.