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Stick-slip behavior of a clayey crustal fault
| Title: | Stick-slip behavior of a clayey crustal fault |
| Authors: | Kameda, Jun Browse this author | | Hamada, Yohei Browse this author |
| Issue Date: | 18-Mar-2022 |
| Publisher: | American Physical Society (APS) |
| Journal Title: | Physical Review Research |
| Volume: | 4 |
| Issue: | 1 |
| Start Page: | 013211 |
| Publisher DOI: | 10.1103/PhysRevResearch.4.013211 |
| Abstract: | Recent studies have revealed that slip on clay-rich fault planes, which develop in the shallow crust and can cause huge earthquakes, is controlled by their flow properties rather than their frictional properties. Here, we simulate a seismogenic crustal fault and show that such a fault plane may behave as a thixotropic yield stress fluid. We then conduct numerical experiments using a simple spring-slider model that incorporates this thixotropic property, and we successfully reproduce spontaneous stick-slip behaviors that correspond to a variety of seismogenic processes, ranging from regular earthquakes with high slip rates to slow earthquakes with lower slip rates. This finding suggests that the seismic activity on a shallow clay-rich crustal fault may be governed by the time-evolving microstructure of the clay-water system that exists along the fault plane. |
| Type: | article |
| URI: | http://hdl.handle.net/2115/85205 |
| Appears in Collections: | 理学院・理学研究院 (Graduate School of Science / Faculty of Science) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)
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