瑞利波勘探中频散曲线的正演计算  

FORWARD MODELING STUDY OF RAYLEIGH WAVE DISPERSION CURVES

作　　者：杨天春[1] 易伟建[1] 何继善[2] 吕绍林[2] 

机构地区：[1]湖南大学土木工程学院,长沙410082 [2]中南大学信息物理工程学院,长沙410083

出　　处：《工程地球物理学报》2004年第6期469-473,共5页Chinese Journal of Engineering Geophysics

摘　　要：瑞利波法野外实测的结果究竟对应理论频散曲线的哪一个导波模式,这在实际工作中是很难判定的。通过比较各导波模式在地表垂直位移大小可知,可假定野外接收到的信号为位移最大的那个导波模式,从而可得与野外实测结果相对应的理论频散曲线。通过实测结果与模拟计算结果的对比,说明了正演方法的可行性。It is hard to determine which guided waves correspond to the received signal in field survey. Comparing the vertical displacements of guided waves on the surface, then we can assume that the received signals are the guided waves which have maximal displacement. According to the comparison between forward modeling and surveying results, we know that the forward modeling method is correct.

关 键 词：瑞利波 导波 “之”字形频散曲线 转换系数 

分 类 号：P631.42[天文地球—地质矿产勘探]