气候变化领域集成服务门户(CCPortal): Unraveling Scaling Properties of Slow-Slip Events

CCPortal

DOI	10.1029/2020GL087477
	Unraveling Scaling Properties of Slow-Slip Events
	Dal Zilio L.; Lapusta N.; Avouac J.-P.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:10
英文摘要	A major debate in geophysics is whether earthquakes and slow-slip events (SSEs) arise from similar failure mechanisms. Recent observations from different subduction zones suggest that SSEs follow the same moment-duration scaling as earthquakes, unlike qualitatively different scaling proposed by earlier studies. Here, we examine the scaling properties using dynamic simulations of frictional sliding. The resulting sequences of SSEs match observations from the Cascadia subduction zone, including the earthquake-like cubic moment-duration scaling. In contrast to conventional and widely used assumptions of magnitude-invariant rupture velocities and stress drops, both simulated and natural SSEs have rupture velocities and stress drops that increase with event magnitudes. These findings support the same frictional origin for both earthquakes and SSEs while suggesting a new explanation for the observed SSEs scaling. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Drops; Failure (mechanical); Friction; Cascadia subduction zone; Failure mechanism; Frictional sliding; Rupture velocities; Scaling properties; Slow slip events; Stress drop; Subduction zones; Earthquakes; earthquake event; earthquake magnitude; earthquake rupture; failure mechanism; geophysics; simulation; subduction zone
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170333
作者单位	Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United States; Division of Engineering and Applied Sciences, California Institute of Technology, Pasadena, CA, United States
推荐引用方式 GB/T 7714	Dal Zilio L.,Lapusta N.,Avouac J.-P.. Unraveling Scaling Properties of Slow-Slip Events[J],2020,47(10).
APA	Dal Zilio L.,Lapusta N.,&Avouac J.-P..(2020).Unraveling Scaling Properties of Slow-Slip Events.Geophysical Research Letters,47(10).
MLA	Dal Zilio L.,et al."Unraveling Scaling Properties of Slow-Slip Events".Geophysical Research Letters 47.10(2020).