浙江省台州-昌化深部构造特征探测  

Exploration of Deep Structural Characteristics of Taizhou-Changhua in Zhejiang Province

作　　者：杨福平 余刚群 侯林锋 孙海青 YANG Fuping;YU Gangqun;HOU Linfeng;SUN Haiqing(Zhejiang Earthquake Disaster Prevention Center,7 Tangmiao Road,Hangzhou 310013,China)

机构地区：[1]浙江省地震灾害防御中心,杭州市塘苗路7号310013

出　　处：《大地测量与地球动力学》2019年第2期142-147,共6页Journal of Geodesy and Geodynamics

基　　金：浙江省防震减灾"十二五"规划重点项目~~

摘　　要：采用高分辨折射和宽角反射/折射综合地震探测方法,在浙江省中部沿黄岩、临海、东阳、桐庐、昌化进行深部构造探测,获得一条长约350km的速度结构剖面。探测结果表明,地壳结构具有明显的多层性,存在3个速度间断面;基底速度结构图像揭示了速度结构的横向非均匀性,这种不均匀性既对应于地质构造单元的分界线或断裂构造带,也反映出东西部构造特征的差异性。Using high resolution refraction and wide-angle reflection/refraction integrated seismic detection method,deep structural exploration is carried out at Huangyan,Linhai,Dongyang,Tonglu and Changhua in the central part of Zhejiang province.A velocity structure section with a length of about 350 km is obtained.The results show that the crustal structure has obvious multi layers,with three velocity discontinuities,and the velocity structure image reveals the heterogeneity of velocity structure in the basal lateral.This heterogeneity corresponds to the tectonic unit in the boundary or fracture tectonic belt,and also reflects the differences between east and west tectonic characteristics.

关 键 词：宽角反射/折射 深部构造探测 速度结构 断裂构造带 构造特征 

分 类 号：P313[天文地球—固体地球物理学]