期刊
SCIENCE
卷 351, 期 6272, 页码 488-492出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aad3108
关键词
-
资金
- Japan Society for the Promotion of Science (JSPS) KAKENHI [23740328, 15K05260]
- Ministry of Education, Culture, Sports, Science and Technology of Japan under Earthquake and Volcano Hazards Observation and Research Program
- Tohoku University
- Berkeley Institute for Data Science - Moore-Sloan Data Science Environment Program
- U.S. NSF [EAR-1246850]
- JSPS KAKENHI [26000002]
- Grants-in-Aid for Scientific Research [26000002, 15H04228, 15K05260, 23740328] Funding Source: KAKEN
- Division Of Earth Sciences
- Directorate For Geosciences [1261833] Funding Source: National Science Foundation
Both aseismic and seismic slip accommodate relative motion across partially coupled plate-boundary faults. In northeastern Japan, aseismic slip occurs in the form of decelerating afterslip after large interplate earthquakes and as relatively steady slip on uncoupled areas of the subduction thrust. Here we report on a previously unrecognized quasi-periodic slow-slip behavior that is widespread in the megathrust zone. The repeat intervals of the slow slip range from 1 to 6 years and often coincide with or precede clusters of large [magnitude (M) >= 5] earthquakes, including the 2011 M 9 Tohoku-oki earthquake. These results suggest that inherently periodic slow-slip events result in periodic stress perturbations and modulate the occurrence time of larger earthquakes. The periodicity in the slow-slip rate has the potential to help refine time-dependent earthquake forecasts.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据