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Title:: Grading of the Historical Earthquake Disasters in the Counties of Yunnan on the Basis of the Entropy Weight Method

Author(s):: ZHANG Fanghao; DENG Shurong; DU Haoguo; LYU Jiali; HE Shifang; (Yunnan Earthquake Agency,Kunming 650224,Yunnan,China)

摘要:: 对1900—2016年云南省167次破坏性地震事件的灾害损失资料进行空间化处理,选取地震烈度面积、死亡人数、受伤人数、直接经济损失4个灾害损失指标,采用客观的灾害损失数据,运用熵权法确定指标的权重系数,划分5个等级评价云南省各县(区)历史地震灾害程度。结果表明:地震灾害较重的区域主要分布在滇西北的丽江市、大理州一带,滇西的德宏州北部地区,滇西南的普洱市西北部地区,滇南的玉溪市南部、红河州北部地区,滇中的楚雄市北部地区以及滇东北的昭通市一带。

Abstract:: In this paper we?first?spatialized the area of seismic-intensity zone(S_a),the death toll(N_d),the injury toll(N_i),and the direct economic losses(L_d)resulting from 167 devastating earthquakes which occurred from 1900 to 2016 in Yunnan Province. Then,using the Entropy Weight Method,we determined the weight coefficients of these 4 indexes:S_a,N_d,N_i,andL_d. According to the weight coefficients,we further proposed 5 levels for the historical earthquake disasters in each county of Yunnan. We found that the earthquake-disaster losses are much more severe in Lijiang city and Dali county of northwest Yunnan,north part of Dehong county of west Yunnan,northwest part of Pu’er city in southwest Yunnan,south part of Yuxi city and north part of Honghe county of south Yunnan,north part of Chuxiong city in central Yunnan,and Zhaotong city of northeast Yunnan.