摘要
基于Thomsen各向异性参数,使用频率一相速度变化率曲线,分析了瑞雷波多模频散的方位各向异性特征。在0°-90°范围内,方位角为45°时,频散方位各向异性程度最大;整体上,高模频散的方位各向异性度大于基模。
The discussion of Rayleigh waves in near-surface investigations is rarely based on layered anisotropy media, even as higher-mode Rayleigh waves are a hot topic in near-surface investigation. This paper discusses the azimuthally anisotropy of multi-mode Rayleigh waves in layered azimuthally anisotropic media. The azimuthally anisotropy degree of 45°is the highest. In most situations, the higher modes of Rayleigh waves are more sensitive to the azimuthally anisotropy than the fundamental mode.
出处
《武汉大学学报(信息科学版)》
EI
CSCD
北大核心
2014年第2期157-160,165,共5页
Geomatics and Information Science of Wuhan University
基金
国家973计划资助项目(2007CB714405)
中央高校基本科研业务费专项资金资助项目(2012214020205)~~
关键词
瑞雷波
多模频散
方位各向异性中图法
Rayleigh waves
multi-modal dispersion
azimuthally anisotropy