用高分辨率地震反射剖面揭示临颍断裂浅部构造特征  

Using High-Resolution Seismic Reflection Profiles to Reveal the Shallow Tectonic Characteristics of Linying Fault

作　　者：田一鸣 姬计法[1] 袁洪克[1] 酆少英[1] 朱国军[1] 张扬 张贵军 杨新友 何银娟[1] 秦晶晶[1] 安泰霖 TIAN Yiming;JI Jifa;YUAN Hongke;FENG Shaoying;ZHU Guojun;ZHANG Yang;ZHANG Guijun;YANG Xinyou;HE Yinjuan;QIN Jingjing;AN Tailin(Geophysical Exploration Center,CEA,75 Wenhua Road,Zhengzhou 450002,China;Henan Earthquake Agency,10 Zhengguang Road,Zhengzhou 450016,China;Xuchang Electrical Vocational College,Intersection of Weiwen Road and Yongchang Road,Xuchang 461000,China;Xuchang Earthquake Prevention and Disaster Reduction Center,1516 Jian’an Road,Xuchang 461000,China)

机构地区：[1]中国地震局地球物理勘探中心,郑州市450002 [2]河南省地震局,郑州市450016 [3]许昌电气职业学院,河南省461000 [4]许昌市防震减灾中心,许昌市461000

出　　处：《大地测量与地球动力学》2024年第3期321-324,330,共5页Journal of Geodesy and Geodynamics

基　　金：许昌市活动断层探测与地震危险性评价项目;郯庐断裂带莒县段浅部精细结构探测项目;中国地震局地震科技星火计划(XH22015A)。

摘　　要：为研究临颍断裂浅部构造特征,完成2条跨断裂高分辨率地震反射剖面。根据探测获取的地震反射剖面,结合石油地震剖面以及区域地质资料,分析临颍隐伏断裂位置、浅部构造特征及活动性。结果表明,临颍断裂是一条整体走向北西、倾向北东的正断层,最新活动时代为早更新世,断裂上盘发育一个次级断裂,与主断层成反“Y”字形态。研究结果可为许昌市及邻区地震危险性评价、城镇规划及国土利用提供地震学依据。To study the shallow tectonic characteristics of Linying fault,we complete two high-resolution seismic reflection profiles across the fault.Based on the obtained seismic reflection profiles,combined with petroleum seismic profiles and regional geological data,we analyze the location,shallow tectonic features,and activity of Linying buried fault.The results show that Linying fault is a normal fault with an overall northwest strike and northeast dip.The latest active age is early Pleistocene.A secondary fault is developed in hanging wall of the fault,forming an inverted“Y”shape with the main fault.The research results can provide seismology basis for seismic risk assessment,urban planning,and land use in Xuchang city and its adjacent areas.

关 键 词：临颍断裂 浅层地震勘探 隐伏断层 构造特征 

分 类 号：P315[天文地球—地震学] P313[天文地球—固体地球物理学]