Aftershock Observation and Analysis of the 2013 Ms 7.0 Lushan Earthquake
Aftershock Observation and Analysis of the 2013 Ms 7.0 Lushan Earthquake
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DOI：
10.1785/0220140186
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发表时间：
2015-07
影响因子：
3.3
通讯作者：
L. Fang;Jianping Wu;Weilai Wang;W. Du;Jinrong Su;Changzai Wang;Ting Yang;Yan Cai
中科院分区：
文献类型：
--
作者：
L. Fang;Jianping Wu;Weilai Wang;W. Du;Jinrong Su;Changzai Wang;Ting Yang;Yan Cai
在线资料：台站部署时间图和余震时空描述图，台站信息和余震目录表。2013年4月20日8时02分（当地时间和北京时间），中国西南部四川省芦山县发生7.0级（6.6级）地震（以下简称芦山地震）。芦山地震造成人员伤亡，对该地区的建筑物和经济活动造成严重破坏。地震造成193人死亡，1万人受伤，25人失踪。芦山地震是自2008年5月12日汶川8.0级地震以来，发生在龙门山断裂带南段的第二次破坏性地震（图1）。芦山地震与汶川地震的震中距离约为87 km （Fang, Wu, Wang, Lu, et al., 2013）。与汶川地震一样，芦山地震的发生也引发了人们对西南地区地震风险潜力和预测的大量讨论。特别是汶川地震是否为大余震一直备受争议（Chen et al., 2013; Du et al., 2013； J. Liu et al., 2013; Wang et al., 2013; Jia et al., 2014）。图1所示。(a)龙门山断裂带的构造背景。红色星和黄色星分别表示汶川和芦山地震的震中。揭示了芦山地震和汶川地震的震源机制。红色圆圈代表芦山和汶川地震的余震。黑线表示主要故障。附图显示了研究区域在中国大陆的位置。(b)芦山震源区内及其周围地震台站的分布……
Online Material: Figures of station deployment time and of spatial and temporal depiction of aftershocks, and tables of station information and aftershock catalogs. At 08:02 (local and Beijing time) on 20 April 2013, an earthquake of M s 7.0 ( M w 6.6) struck Lushan County in Sichuan Province, southwestern China (hereafter referred to as the Lushan earthquake). The Lushan earthquake resulted in casualties and severe damage to the buildings and to the economic activities of the region. The earthquake left 193 dead, up to 10,000 injured, and 25 missing. The direct economic loss hit over $1.6 billion U.S. The Lushan earthquake is the second destructive earthquake to have occurred in the southern segment of the Longmenshan fault zone since the 12 May 2008 M s 8.0 Wenchuan earthquake (Fig. 1). The distance between the epicenters of the Lushan earthquake and the Wenchuan earthquake is about 87 km (Fang, Wu, Wang, Lu, et al. , 2013). As happened following the Wenchuan earthquake, the occurrence of the Lushan earthquake also stimulated lots of discussions on the seismic risk potential and prediction in southwest China. In particular, whether it was a large aftershock of the Wenchuan earthquake has been heatedly debated (Chen et al. , 2013; Du et al. , 2013; J. Liu et al. , 2013; Wang et al. , 2013; Jia et al. , 2014). Figure 1. (a) Tectonic settings of the Longmenshan fault zone. Red and yellow stars indicate the epicenters of the Wenchuan and Lushan earthquakes, respectively. The focal mechanisms of the Lushan earthquake and Wenchuan earthquake are also shown. Red circles represent aftershocks of the Lushan and Wenchuan earthquakes. Black lines indicate the main faults. The inset map shows the location of the study region in the Chinese mainland. (b) The distribution of seismic stations in and around the epicentral region of the Lushan …