GIS支持下的江西省地震潜在危险度评价
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摘要
利用G IS的定距离空间分析功能,对江西省境内分布的18条主要活动断裂周围5、10、15、20、25 km的区域分别建立缓冲区,对各缓冲区的地震活动频度和强度进行了统计,初步分析了活动断裂和历史地震的相关性,确定了沿断裂带的历史地震次数。在系统全面地分析近代所发生地震的基础上,得出地震的等烈度分布及有关参数。最后,利用空间叠加分析功能,划分了地震潜在危险性区域,得出江西省地震活动较强区域主要在赣南,其次在赣北,为江西省的防震减灾工作部署提供了定量依据。
Using equidistance space analysis function of GIS,buffer areas 5 km,10 km,15 km,20 km,25 km wide respectively surrounding the 18 main active faults in Jiangxi Province were set up by Geographic Information System (GIS) method,for each buffer area the correlation between active faults and historical earthquakes was analyzed,and the number of historical earthquakes along fault zone was determined.Based on the tectonic background of the recent destructive earthquakes,the statistical analysis was performed in determining the relationship between near-epicenter intensity and magnitude,as well as the relationship between sensible radius and magnitude.Finally,using the GIS Spatial Overlay Analysis,the Potential hazard region of earthquake was worked out,and it was concluded that the area with the most strong danger is in the south of Jiangxi Province,the north of Jinagxi Province is the next.This information provides the quantitative basis for the deployment of protection against earthquake and hazard mitigation in Jiangxi Province.
Using equidistance space analysis function of GIS,buffer areas 5 km,10 km,15 km,20 km,25 km wide respectively surrounding the 18 main active faults in Jiangxi Province were set up by Geographic Information System (GIS) method,for each buffer area the correlation between active faults and historical earthquakes was analyzed,and the number of historical earthquakes along fault zone was determined.Based on the tectonic background of the recent destructive earthquakes,the statistical analysis was performed in determining the relationship between near-epicenter intensity and magnitude,as well as the relationship between sensible radius and magnitude.Finally,using the GIS Spatial Overlay Analysis,the Potential hazard region of earthquake was worked out,and it was concluded that the area with the most strong danger is in the south of Jiangxi Province,the north of Jinagxi Province is the next.This information provides the quantitative basis for the deployment of protection against earthquake and hazard mitigation in Jiangxi Province.
引文
[1]李东平,沈晓建,胡秀芳.G IS技术在浙江地震速报中的应用[J].防震减灾工程学报,2004,24(3):320-322.
[2]余世舟,赵振东,钟江荣.基于G IS的地震次生灾害数值模拟[J].自然灾害学报,2003,12(4):100-105.
[3]李杰,江建华,李明浩.基于G IS的城市地震次生火灾危险性分析系统[J].地震学报,2001,23(4):420-426.
[4]江西省地震志.江西省地方志编纂委员会[M].北京:方志出版社,2003.
[5]李树德.试析地震与断裂的关系[J].北京大学学报:自然科学版,2001,37(3):394-399.
[6]屈春燕,叶洪.利用G IS分析活动断裂与地震的相关性[J].地震研究,2000,23(1):72-74.
[7]彭自正,赵爱平,胡翠娥,等.基于G IS的江西活动断裂分布与地震活动关系研究[J].华南地震,2002,22(4):9-18.
[8]柔洁,伊力亚尔.阿不力孜.关于地震烈度的讨论——以新疆地区为例[J].中国地震,2006,22(1):94-102.
[9]李永强,龚强,王景来.基于G IS的数字等震线模型[J].地震研究,2006,29(4):401-406.
[10]徐秀登.江西省破坏性地震分布特点的初步看法[J].华南地震,1982,2(2):53-57.
[11]江西省地质矿产局.江西省区域地质志[M].北京:地质出版社,1984.
[2]余世舟,赵振东,钟江荣.基于G IS的地震次生灾害数值模拟[J].自然灾害学报,2003,12(4):100-105.
[3]李杰,江建华,李明浩.基于G IS的城市地震次生火灾危险性分析系统[J].地震学报,2001,23(4):420-426.
[4]江西省地震志.江西省地方志编纂委员会[M].北京:方志出版社,2003.
[5]李树德.试析地震与断裂的关系[J].北京大学学报:自然科学版,2001,37(3):394-399.
[6]屈春燕,叶洪.利用G IS分析活动断裂与地震的相关性[J].地震研究,2000,23(1):72-74.
[7]彭自正,赵爱平,胡翠娥,等.基于G IS的江西活动断裂分布与地震活动关系研究[J].华南地震,2002,22(4):9-18.
[8]柔洁,伊力亚尔.阿不力孜.关于地震烈度的讨论——以新疆地区为例[J].中国地震,2006,22(1):94-102.
[9]李永强,龚强,王景来.基于G IS的数字等震线模型[J].地震研究,2006,29(4):401-406.
[10]徐秀登.江西省破坏性地震分布特点的初步看法[J].华南地震,1982,2(2):53-57.
[11]江西省地质矿产局.江西省区域地质志[M].北京:地质出版社,1984.
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