气候变化领域集成服务门户(CCPortal): On-Fault Geological Fingerprint of Earthquake Rupture Direction

CCPortal

DOI	10.1029/2020JB019863
	On-Fault Geological Fingerprint of Earthquake Rupture Direction
	Kearse J.; Kaneko Y.
发表日期	2020
ISSN	21699313
卷号	125 期号:9
英文摘要	How earthquake ruptures evolve and propagate are major outstanding questions in seismology. Our current understanding is limited to modern events captured by seismic networks, making it impossible to observe rupture propagation that occurred during earthquakes in the distant past. Here we propose a new method to discern the rupture propagation directions of past large earthquakes based on geological features preserved on fault slip planes. These features—called slickenlines—are striations formed during seismic slip and record dynamic fault movement during past surface-breaking earthquakes. We develop a theoretical framework that links slickenline curvature with rupture mode and rupture propagation direction for all faulting types and test our model using a global catalogue of historical surface-rupturing earthquakes with seismologically constrained rupture directions. Our results reveal that historical observations are consistent with theoretical predictions, thus providing a robust way to uncover the rupture directions of large earthquakes that lack instrumental data. ©2020. The Authors.
英文关键词	curved slickenlines; dynamic rupture propagation
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187627
作者单位	GNS Science, Lower Hutt, New Zealand; School of Geography, Environment and Earth Sciences, Victoria University of Wellington, Wellington, New Zealand; Department of Geophysics, Graduate School of Science, Kyoto University, Kyoto, Japan
推荐引用方式 GB/T 7714	Kearse J.,Kaneko Y.. On-Fault Geological Fingerprint of Earthquake Rupture Direction[J],2020,125(9).
APA	Kearse J.,&Kaneko Y..(2020).On-Fault Geological Fingerprint of Earthquake Rupture Direction.Journal of Geophysical Research: Solid Earth,125(9).
MLA	Kearse J.,et al."On-Fault Geological Fingerprint of Earthquake Rupture Direction".Journal of Geophysical Research: Solid Earth 125.9(2020).