摘要
利用浅层反射地震数据的面波与初至波信息,采用多道面波分析法(MASW)得到浅部横波速度结构,再利用初至波走时层析成像得到纵波速度结构,进而得到纵横波速度比与泊松比数据。结合反射波叠加剖面与跨断层钻孔联合剖面对浅部地层进行综合解释,在一定程度上弥补了浅部反射资料的缺失,对确定浅部断层的位置及性质起到非常重要的作用。
This study makes full use of the surface wave and the primary wave information from the shallow reflection seismic data.We use the method of MASW to obtain the shallow shear wave velocity structure,and use first break travel-time tomography technology to obtain the P-wave velocity structure.Then,we get the velocity ratio and the poisson ratio data.Combined with the reflection wave stack section and the cross-fault borehole profile,the shallow strata are comprehensively interpreted.To some extent,our method compensates for the missing shallow reflection information,and plays a very important role for determining location and nature of the shallow faults.
作者
邓小娟
酆少英
左莹
何银娟
季通宇
DENG Xiaojuan;FENG Shaoying;ZUO Ying;HE Yinjuan;JI Tongyu(Geophysical Exploration Center,CEA,75 Wenhua Road,Zhengzhou 450002,China)
出处
《大地测量与地球动力学》
CSCD
北大核心
2019年第4期425-431,共7页
Journal of Geodesy and Geodynamics
基金
中国地震局地球物理勘探中心青年基金(YFGEC2016005)
中国地震局震情跟踪合同制项目(2018010234)~~
关键词
多道面波分析方法
初至波走时层析成像
浅层反射地震
浅部纵横波速度比
浅部泊松比
multi-channel analysis of surface waves
first break travel-time tomography
shallow reflection seismic method
shallow P-wave and S-wave velocity ratio
shallow poisson ratio
