Tectonic activity and earthquake risk in the Chengnanhe fault zone in Weihai city,Shandong province,China,obtained by using an integrated prospecting technique in geophysics and geology  

作　　者：Gui-Lin Du Lian-Feng Zhao Xiaobo Tian Shujuan Su Xiangchun Chang Hualin Wang Zhuqing Huo Tao Zhu Yonghua Li 

机构地区：[1]College of Earth Science and Engineering,Shandong University of Science and Technology,Qingdao 266590,China [2]Weihai Earthquake Monitoring Center,Weihai 264200,China [3]Key Laboratory of Earth and Planetary Physics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China [4]Mohe Observatory of Geophysics,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China [5]State Key Laboratory of Lithosphere Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China [6]Innovation Academy for Earth Sciences,Chinese Academy of Sciences,Beijing 100029,China [7]Yantai Earthquake Monitoring Center Station,Shandong Earthquake Agency,Yantai 264000,China [8]Shandong Institute of Earthquake Engineering,Ji'nan 250014,China [9]Jiangsu Earthquake Agency,Nanjing 210014,China [10]Institute of Geophysics,China Earthquake Administration,Beijing 100081,China

出　　处：《Earthquake Science》2021年第2期137-147,共11页地震学报（英文版）

基　　金：the Special Fund of China Seismic Experimental Site(Nos.2019CSES0103,2018CESE0102 and 2016CESE0203);the National Natural Science Foundation of China(Nos.41630210,41674060,41974054,and 41974061);the“Active Faults Exploration and Seismic Hazard Assessment in Weihai City”funded by Weihai Municipal People's Government.

摘　　要：For city planning and reducing potential earthquake risk,it’s necessary to detect the information of the buried faults in an urban area especially,including the location and activities.An integrated technique with geophysical and geological methods,including the shallow seismic reflection profile,electrical resistivity measurement,geologic borehole section,and exploration trench,was used to detect the Chengnanhe fault,which is one of the two main faults passing through the Weihai urban area in Shandong province,China.The results show that it is a normal fault striking with E-W direction,and it is relatively inactive and stable.By using the thermoluminescence(TL)dating,we found that the Chengnanhe fault initiated in mid-Pleistocene and there was no offset after late Pleistocene.Such an integrated technique with multiple geological and geophysical methods provides a significant assessment of earthquake risk for city planning in urban areas.

关 键 词：Chengnanhe fault geologic drilling thermoluminescence(TL)dating shallow seismic profile electrical resistivity measurement. 

分 类 号：P315[天文地球—地震学] P631[天文地球—固体地球物理学]