气候变化领域集成服务门户(CCPortal): The Ocean's Impact on Slow Slip Events

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DOI	10.1029/2020GL087273
	The Ocean's Impact on Slow Slip Events
	Gomberg J.; Baxter P.; Smith E.; Ariyoshi K.; Chiswell S.M.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:14
英文摘要	We test the hypothesis that ocean seafloor pressures impart stresses that alter the initiation or termination of transient slow slip events (SSEs) on shallow submarine and near-coastal faults, using simulated seafloor pressures and a new catalog of SSEs in the Hikurangi subduction zone. We show that seafloor pressures may be represented by an average time history over the ~100-km dimensions of the study area. We account for SSE uncertainties and the multiplicity of processes that affect SSEs statistically by estimating the probabilities of rejecting the null hypothesis that SSE initiation or termination pressures are those to be expected by chance sampling of known (modeled) seafloor pressures, with low probabilities indicating some causal connection. No impact of ocean pressure changes on SSE initiation is detectable, but a correlation with their terminations is suggested. SSE slip that weakens the fault and makes it more sensitive to small stress changes may explain results. ©2020. American Geophysical Union. All Rights Reserved. This article has been contributed to by US Government employees and their work is in the public domain in the USA.
英文关键词	Earth sciences; Geophysics; Low probability; Null hypothesis; Pressure change; Sea floor; Slow slip events; Small stress; Study areas; Subduction zones; Uncertainty analysis; fault; global ocean; seafloor; shear stress; slip; subduction zone; underwater environment; Hikurangi Margin; Pacific Ocean
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/170069
作者单位	U.S. Geological Survey, University of Washington, Seattle, WA, United States; Institute of Geophysics, Victoria University of Wellington, Wellington, New Zealand; Japan Agency for Marine-Earth Science and Technology, Yokohama, Japan; National Institute of Water and Atmospheric Research, Wellington, New Zealand
推荐引用方式 GB/T 7714	Gomberg J.,Baxter P.,Smith E.,et al. The Ocean's Impact on Slow Slip Events[J],2020,47(14).
APA	Gomberg J.,Baxter P.,Smith E.,Ariyoshi K.,&Chiswell S.M..(2020).The Ocean's Impact on Slow Slip Events.Geophysical Research Letters,47(14).
MLA	Gomberg J.,et al."The Ocean's Impact on Slow Slip Events".Geophysical Research Letters 47.14(2020).