气候变化领域集成服务门户(CCPortal): Analytical Prediction of Seismicity Rate Due to Tides and Other Oscillating Stresses

CCPortal

DOI	10.1029/2020GL090827
	Analytical Prediction of Seismicity Rate Due to Tides and Other Oscillating Stresses
	Heimisson E.R.; Avouac J.-P.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:23
英文摘要	Oscillatory stresses are ubiquitous on Earth and other solid-surface bodies. Tides and seasonal signals perpetually stress faults in the crust. Relating seismicity to these stresses offers fundamental insight into earthquake triggering. We present a simple model that describes seismicity rate due to perpetual oscillatory stresses. The model applies to large-amplitude, nonharmonic, and quasiperiodic stressing. However, it is not valid for periods similar to the characteristic time ta. We show that seismicity rate from short-period stressing scales with the stress amplitude, but for long periods with the stressing rate. Further, that background seismicity rate r is equal to the average seismicity rate during short-period stressing. We suggest that Aσ0 may be underestimated if stresses are approximated by a single harmonic function. We revisit Manga et al. (2019, https://doi.org/10.1029/2019GL082892), which analyzed the tidal triggering of marsquakes and provide a rescaling of their seismicity rate response that offers a self-consistent comparison of different hydraulic conditions. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	Harmonic functions; Tides; Analytical predictions; Characteristic time; Earthquake triggering; Hydraulic conditions; Large amplitude; Quasi-periodic; Simple modeling; Stress amplitudes; Earthquakes; amplitude; earthquake trigger; harmonic analysis; seismicity; signal processing; trigger mechanism
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/169366
作者单位	Division of Geological and Planetary Sciences, California Institute of Technology, Pasadena, CA, United States
推荐引用方式 GB/T 7714	Heimisson E.R.,Avouac J.-P.. Analytical Prediction of Seismicity Rate Due to Tides and Other Oscillating Stresses[J],2020,47(23).
APA	Heimisson E.R.,&Avouac J.-P..(2020).Analytical Prediction of Seismicity Rate Due to Tides and Other Oscillating Stresses.Geophysical Research Letters,47(23).
MLA	Heimisson E.R.,et al."Analytical Prediction of Seismicity Rate Due to Tides and Other Oscillating Stresses".Geophysical Research Letters 47.23(2020).