2008年西藏当雄6.6级地震烈度与震害特征
|
摘要
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.
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.
引文
[1]西藏自治区地质调查院.2002.1∶25万日喀则市幅地质图.
[2]西藏自治区地质调查院.2005.1∶25万拉萨市幅地质图.
邓起东,冉勇康,杨晓平,等.2007.中国活动构造图[M].北京:地震出版社.
丁国瑜,蔡文伯,谢广林,等.1999.中国岩石圈动力学概论[M].北京:地震出版社.
国家地震局地质研究所.1992.西藏中部活动断裂[M].北京:地震出版社.
西藏地质矿产局.1992.西藏自治区区域地质志[M].北京:地质出版社.
周光全,谭文红,施伟华,等.2005.云南生命线工程及水工结构的地震灾害损失研究[J].灾害学,20(1):85-90.
G B17741—1999.工程场地地震安全性评价技术规范[S].
G B18306—2001.中国地震参数区划图[S].
G B/T17742—1999.中国地震烈度表[S].
G B/T18208.3—2000.地震现场工作第三部分:调查规范[S].
G B/T18208.4—2005.地震现场工作第四部分:灾害直接损失评估[S].
[2]西藏自治区地质调查院.2005.1∶25万拉萨市幅地质图.
邓起东,冉勇康,杨晓平,等.2007.中国活动构造图[M].北京:地震出版社.
丁国瑜,蔡文伯,谢广林,等.1999.中国岩石圈动力学概论[M].北京:地震出版社.
国家地震局地质研究所.1992.西藏中部活动断裂[M].北京:地震出版社.
西藏地质矿产局.1992.西藏自治区区域地质志[M].北京:地质出版社.
周光全,谭文红,施伟华,等.2005.云南生命线工程及水工结构的地震灾害损失研究[J].灾害学,20(1):85-90.
G B17741—1999.工程场地地震安全性评价技术规范[S].
G B18306—2001.中国地震参数区划图[S].
G B/T17742—1999.中国地震烈度表[S].
G B/T18208.3—2000.地震现场工作第三部分:调查规范[S].
G B/T18208.4—2005.地震现场工作第四部分:灾害直接损失评估[S].
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心