文章基本信息

标题：Studies on Aftershocks in Taiwan: A Review
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作者：Jeen-Hwa Wang ; Kou-Cheng Chen ; Peih-Lin Leu 等
期刊名称：Terrestrial Atmospheric and Oceanic Sciences
印刷版ISSN：1017-0839
出版年度：2016
卷号：27
期号：6
页码：769-789
DOI：10.3319/TAO.2016.09.12.01
出版社：Chinese Geoscience Union
摘要：We reviewed studies on aftershocks in Taiwan for the following topics: the spatial-temporal distributions and focal-plane solutions of aftershocks fromof thirty larger earthquakes with magnitudes > 5; the correlations between the mainshock and the largest aftershock based on dependence of the differences in magnitudes (ΔM), occurrence times (ΔT), epicenters (ΔH), and focal depths (ΔD) upon the mainshock magnitude, M m ; magnitude-dependence of p-value of Omori’s law of aftershocks; the correlation between the b-value of the Gutenberg-Richter’s frequency-magnitude law and the p-value; application of the epidemic-type aftershock sequences (ETAS) model to describe the aftershock sequence; the mechanisms of triggering aftershocks; and dynamic modeling of aftershocks. The main results are: (1) The spatial distribution of aftershocks for some earthquakes is consistent with the recognized fault; (2) Unlike Båth’s law, ΔM slightly increases with M m ; (3) ΔT does not correlate with M m ; (4) ΔD does not correlate with M m ; (5) ΔT somewhat increases with ΔD; (6) The p-value slightly increases with M m ; (7) There is a negative correlation between the b- and p-values. (8) There was seismic quiescence over a broader region of Taiwan before the 1999 Chi-Chi earthquake; (9) Both the static and dynamic stress changes trigger aftershocks; and (10) Dynamic modeling shows that a decrease in elastic modulus is a significant factor in triggering aftershocks.
关键词：Mainshock; Aftershock; Omori law; Correlation; ETAS model; Aftershock triggering; Dynamical modeling;