2008年西藏当雄6.6级地震烈度与震害特征

The 2008 Dangxiong,Tibet,M_S6.6 Earthquake:Intensity and Disaster Characteristics

在西藏地区首次按照标准规范开展的地震灾害损失评估实践的基础上,分析研究了西藏当雄6.6级地震的地震地质背景、地震烈度与震害特征,并与川滇地区同级、同类地震进行了对比分析,结果表明:此次地震各烈度区面积介于川滇两次同级地震之间,等震线形态特征与其地震地质背景相适应;震害具有直接经济总损失偏低、工程结构的经济损失比例较小等特点,反映了西藏震区的人文经济状况。

After the Dangxiong,Tibet,MS6.6 earthquake occurred in 2008,earthquake-caused direct economic loss assessment was carried out according to the standard codes for the first time in the Tibet region.We study the geological background,seismic intensity,and disaster characteristics of the Dangxiong earthquake,and compare it with two similar earthquakes with the same magnitude level in the Sichuan-Yunnan region.The intensity areas of the Dangxiong earthquake are between the areas of the two earthquakes in the Sichuan-Yunnan region,and the shape of isoseismals accords to the seismo-geological background in the seismic area.The total direct economic loss caused by the earthquake is lower and the economic loss of engineering structures is smaller than those of the two earthquakes,which reflects the local humane economic situation.