利用GIS研究延怀盆地地震与断裂关系  

Study on the relationship between earthquakes and active faults in Yanhuai basin based on GIS

作　　者：杨凡 陈雅慧[3] 李华玥 Yang Fan;Chen Yahui;Li Huayue(Institute of Geology,China Earthquake Administration,Beijing 100029,China;Hebei Earthquake Agency,Shijiazhuang 050021,China;China Earthquake Networks Center,Beijing 100045,China)

机构地区：[1]中国地震局地质研究所,中国北京100029 [2]河北省地震局,中国石家庄050021 [3]中国地震台网中心,中国北京100045

出　　处：《地震地磁观测与研究》2019年第4期16-22,共7页Seismological and Geomagnetic Observation and Research

基　　金：河北省地震局强震发震构造与机理研究创新团队项目(项目编号:DZ20180319009);河北省地震科技星火计划项目“河北省地震滑坡危险性评估”(项目编号:DZ20170503012);中国地震局地震应急青年重点任务(项目编号:CEA_EDEM-2019)

摘　　要：通过ArcgIs catlog建立延怀盆地地震和活动断裂基础数据库,运用gIs软件环境的缓冲区、空间叠加及统计等分析方法,对延怀盆地内部地震活动与活动断裂关系进行研究,结果证明:中小地震活动主要沿怀涿盆地北缘断裂和延矾盆地北缘断裂分布;约83.7%的地震发生在以10 km为半径的断裂缓冲区内;在正断层缓冲区内,单位地震数较高。结合活动构造特征,分析认为,延怀盆地在全新世以来受拉张应力场控制作用,中小地震活动集中分布在盆地一侧,且靠近控制盆地的主控边界断裂。By establishing basic database using Arcgis catlog based on earthquake and fracture database,using GIS software environment buffer analysis,spatial overlay analysis and statistical analysis methods,we studied the relationship between earthquake and fault within the basin.Researches have shown that most of the small or middle-sized earthquakes occurred in northern margin of the Huaizhuo basin and Yanfan basin,and within a radius of 10 km buffer zone contains about 83.7%earthquakes.It is also shown that earthquakes in Holocene Epoch are distributed in the basin margin of one side in Holocene in tensile stress under control,being higher number of earthquake fault.

关 键 词：地震 活动断裂 缓冲区 GIS 延怀盆地 

分 类 号：P61[天文地球—矿床学]