Spatial and Temporal Variation of b-Values in Southwest China

被引:21
|
作者
Zhang, Shenjian [1 ]
Zhou, Shiyong [1 ]
机构
[1] Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China
基金
中国国家自然科学基金;
关键词
b-value; frequency magnitude distribution; B-spline; Bayesian method; Wenchuan M-s 8.0 earthquake; Southwest China; EARTHQUAKE CATALOGS; WENCHUAN EARTHQUAKE; BAYESIAN-APPROACH; MAGNITUDE; FREQUENCY; STRESS; SICHUAN; COMPLETENESS; AFTERSHOCKS; SEISMICITY;
D O I
10.1007/s00024-015-1044-7
中图分类号
P3 [地球物理学]; P59 [地球化学];
学科分类号
0708 ; 070902 ;
摘要
In our study, we used an improved Bayesian method based on a basis spline (B-spline) function to estimate the spatial and temporal variations of b-values in Southwest China. We propose that b-values combined with seismicity and tectonic background can provide a fairly clear stress condition and can be used in earthquake hazard analysis. Very low b-values in Southwest China appear to be related to the 2008 Wenchuan earthquake. We also suggest that the decreasing b-value trend in the Longmen Shan area from 2000 to 2008 may be an indicator of the 2008 Wenchuan earthquake.
引用
收藏
页码:85 / 96
页数:12
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