气候变化领域集成服务门户(CCPortal): Using a Large-n Seismic Array to Explore the Robustness of Spectral Estimations

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DOI	10.1029/2020GL089342
	Using a Large-n Seismic Array to Explore the Robustness of Spectral Estimations
	Kemna K.B.; Peña Castro A.F.; Harrington R.M.; Cochran E.S.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:21
英文摘要	Spectral analysis is widely used to estimate and refine earthquake source parameters such as source radius, seismic moment, and stress drop. This study aims to quantify the precision of the single spectra and empirical Green's function spectral ratio approach using the Large-n Seismic Survey in Oklahoma (LASSO) array. The dense station coverage in an area of local saltwater disposal offers a unique opportunity to observe and quantify radiation pattern effects and subsequent precision of spectral estimates of small earthquakes (M < 3). The results suggest that the precision of source properties estimated from direct phase arrivals for arrays with less than 20 stations should be assumed to be not less than 30% and could be as high as 150% if less than five stations are used. Furthermore, we do not see clear evidence for, or against, a scaling of stress drop with magnitude of small earthquakes (M < 3) as observed by other studies. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Drops; Radiation effects; Regression analysis; Spectrum analysis; Earthquake source parameters; Empirical green's functions; Pattern effect; Seismic surveys; Small earthquakes; Spectral estimate; Spectral Estimation; Spectral ratios; Earthquakes; earthquake magnitude; estimation method; exploration; geophysical array; Green function; precision; seismic source; seismicity; source parameters; spectral analysis; Oklahoma
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/169520
作者单位	Institute of Geology, Mineralogy and Geophysics, Ruhr University Bochum, Bochum, Germany; Department of Earth and Planetary Sciences, McGill University, Montréal, QC, Canada; U.S. Geological Survey, Earthquake Science Center, Pasadena, CA, United States
推荐引用方式 GB/T 7714	Kemna K.B.,Peña Castro A.F.,Harrington R.M.,et al. Using a Large-n Seismic Array to Explore the Robustness of Spectral Estimations[J],2020,47(21).
APA	Kemna K.B.,Peña Castro A.F.,Harrington R.M.,&Cochran E.S..(2020).Using a Large-n Seismic Array to Explore the Robustness of Spectral Estimations.Geophysical Research Letters,47(21).
MLA	Kemna K.B.,et al."Using a Large-n Seismic Array to Explore the Robustness of Spectral Estimations".Geophysical Research Letters 47.21(2020).