JpGU-AGU Joint Meeting 2020

Presentation information

[E] Oral

S (Solid Earth Sciences ) » S-CG Complex & General

[S-CG58] Science of slow earthquakes: Toward unified understandings of whole earthquake process

convener:Satoshi Ide(Department of Earth an Planetary Science, University of Tokyo), Hitoshi Hirose(Research Center for Urban Safety and Security, Kobe University), Kohtaro Ujiie(Graduate School of Life and Environmental Sciences, University of Tsukuba), Takahiro Hatano(Department of Earth and Space Science, Osaka University)

[SCG58-28] Slow slip and transition to fast rupture in friction of gels

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

Keywords:slow earthquake, giant earthquake, laboratory experiment , gel

It is an essential question of whether a slow slip completes as an isolated event or it accompanies a fast rupture, to predict a giant earthquake and to understand the underlying processes. In this study, we reproduced the above two cases in our laboratory experiments and compared them by measuring slip velocities and stress fields. As a result, we found that the heterogeneous stress distributions strongly effects the nucleation processes and the transition to fast rupture. In our talk, we will discuss our experimental results by comparing with numerical simulations.