摘要
地震构造图是综合反映特定地区地震构造环境和地震活动水平的基础性图件,鄂尔多斯活动地块及边界带1∶50万地震构造图是国家重点研发计划“鄂尔多斯活动地块边界带动力学模型与强震危险性研究”项目的一个专题成果。该图以鄂尔多斯活动地块及边界带为编图范围,参照地震行业有关地震构造图编制标准和数据库标准,在系统收集和整理区域地理信息、地质、活动构造、地震、地球物理等资料的基础上,开展高分辨卫星影像解译,吸收项目最新研究成果,建设了编图所需的基础数据库;通过资料矢量化、地层界线修改、断层修改、图面修饰、图件复核等环节,编制成鄂尔多斯活动地块及边界带1∶50万地震构造图。该图反映了由银川盆地—贺兰山、弧形构造束、渭河盆地、山西地堑系、河套盆地等活动构造单元组成的鄂尔多斯活动地块边界带,以及相邻地块有关地震构造的最新资料,完善了鄂尔多斯地块及边界带活动构造几何学和运动学图像,建成了区域地震构造基础数据库。
The 1∶500000 seismotectonic map of the Ordos active block and boundary zone is a special achievement of the national key research and development project“Research on dynamic model and strong earthquake risk of Ordos active block boundary zone”.Taking the Ordos active block and boundary zone as the mapping scope,this map refers to the compilation standards and database standards of seismotectonic map in the seismic industry,and carries out high-resolution image interpretation on the basis of systematically collecting and collating geographic information,geology,active tectonics,earthquake,geophysics and other data.It absorbs the latest research results of the project and builds the basic database required for mapping.Through data vectorization,stratigraphic boundary modification,fault modification,map modification,the 1∶500000 seismotectonic map of the Ordos active block and boundary zone was compiled.This map reflects the boundary zone of Ordos active blocks such as Yinchuan Basin Helan Mountains,arc structure bundle,Weihe Basin,Shanxi graben system,Hetao Basin and the seismic structure of adjacent blocks,the geometric and kinematic images of active tectonics in the Ordos block and boundary zone were improved.
作者
雷启云
郑文俊
王银
余思汗
沈旭章
郝明
Lei Qiyun;Zheng Wenjun;Wang Yin;Yu Sihan;Shen Xuzhang;Hao Ming(Earthquake Agency of Ningxia Hui Autonomous Region,Ningxia Yinchuan 750001,China;School of Earth Sciences and Engineering,Sun Yat-sen University,Guangdong Zhuhai 519082,China;The Second Monitoring and Application Center,China Earthquake Administration,Shaanxi Xi’an 710054,China)
出处
《地震科学进展》
2024年第1期65-74,共10页
Progress in Earthquake Sciences
基金
国家重点研发计划项目(2017YC1500100)
宁夏自然基金项目(2022AAC03688)联合资助。
