摘要
地壳介质的各向异性主要是裂隙各向异性,剪切波穿过各向异性介质传播会发生分裂现象.剪切波分裂的偏振特性和时间延迟特性与裂隙介质的几何特性和物理性质有关,可以用来研究地壳应力场及其动态变化.
Seismic anisotropy in the crust is mainly originated from crack-induced anisotropy. Shear-wave will split when it travels through anisotropic media. The polarizations and time-delays of shear-wave splitting are related to the geometrical and physical characteristics of the crustal media. Shear-wave splitting could be adopted to study the stress field in the crust and its dynamic variation.
出处
《安徽师范大学学报（自然科学版）》
CAS
2006年第3期205-211,共7页
Journal of Anhui Normal University(Natural Science)
基金
国家发改委项目(2004-1138)
国家地震局"中国数字地震观测网络断层试验探测项目"闽科计(2002-1004)
关键词
地震各向异性
剪切波分裂
偏振
地壳
地震预测
seismic anisotropy
shear-wave splitting
polarization
crust
earthquake-forecasting
