2005年8月5日云南省会泽—四川省会东5.3级地震四川震区地震宏观烈度考察

The macro disaster investigating on the Ms5.3 Huize-Huidong Earthquake on 5 August 2005

2005年8月5日在云南省会泽与四川省会东两县交界处,发生了Ms5.3级地震。极震区四川震区位于会东县松坪—野牛坪—甘海子—岩坝—淌塘一带,极震区烈度为Ⅵ度,Ⅵ度区和Ⅴ度区面积分别为353和1208km2。等震线分布形态总体呈长椭圆形,长轴为北东向。四川震区涉及会东县松坪、嘎吉、鲁吉、淌塘、大桥、野租等6个区共28个乡,大多数建筑物受损,在松坪区、淌塘区的部分地区出现山地灾害。综合分析认为,此次地震的发生与震区北东向淌塘—岩坝断裂的活动有关。

An Ms5.3 earthquake occurred at the boundary area between Huize County, Yunnan Province, and Huidong County, Sichuan Province, on 5 August 2005. The disaster area caused by this earthquake with the extensity Ⅵ degree in Siehuan part is located in Songping, Yeniuping, Ganhaizhi, Yanbe and Tangtang, Huidong County. The area of Ⅵ degrees and V degrees is 353 and 1208 km^2 respectively. The shape of isoseismic line is an oval and the direction of major axis is northeast. The 6 disaster villages include Songping, Gaji, Luji, Tangtang, Daqiao and Yezu in Huidong County, which amount to 28 small towns. Most local houses are damaged and the collapse events happened in Songping and Tangtang. We think that this earthquake is caused by the activities of the northeast fault of Tangtang-Yanha.