Japan Geoscience Union Meeting 2018

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[JJ] Oral

S (Solid Earth Sciences) » S-SS Seismology

[S-SS15] Fault Rheology and Earthquake Physics

Mon. May 21, 2018 10:45 AM - 12:15 PM A07 (Tokyo Bay Makuhari Hall)

convener:Hideki Mukoyoshi(Department of Geoscience Interdisciplinary Graduate School of Science and Engineering, Shimane University), Wataru Tanikawa(Japan Agency for Marine-Earth Science and Technology, Kochi Instutute for Core Sample Research), Takanori Matsuzawa(国立研究開発法人　防災科学技術研究所, 共同), Keisuke Yoshida(Tohoku University), Chairperson:Tanikawa Wataru, Yoshida Keisuke(東北大学大学院理学研究科 地球物理学専攻)

11:45 AM - 12:00 PM

[SSS15-16] Supershear rupture experiments with gels having surface asperities

*Tetsuo Yamaguchi1 (1.Graduate school of Engineering, Kyushu University)

Keywords:supershear, stick-slip, laboratory experiment, analogue experiment, gel, slow slip

Since gel is a soft and transparent elastic material, we can track elementary rupture processes using standard high-speed cameras. Furthermore, we can easily design surface asperities and visalize stress fields. In this study, we conducted stick-slip experiments using gels having surface asperities. As a result, we could observe a wide variety of slip events including uni-lateral/bi-lateral ruptures and ranging from slow slip to supershear. We will discuss statistical properties as well as rupture mechanisms based on the stress visualization.