Research progress on layered seismic anisotropy-A review  

作　　者：Shengyi Shen Yuan Gao 

机构地区：[1]Key Laboratory of Earthquake Prediction,Institute of Earthquake Forecasting,China Earthquake Administration,Beijing,100036,China

出　　处：《Earthquake Research Advances》2021年第1期4-9,共6页地震研究进展（英文）

摘　　要：Seismic anisotropy is an effective feature to study the inner structure of the Earth.In complex tectonic area,the assumption of single-layer anisotropy is sometimes not well consistent with the observed data;thus,the assumption of multi-layered(i.e.stratified)anisotropy should be considered.At present,the main methods to study anisotropy include receiver functions,shear wave splitting from local and teleseismic events(SKS,SKKS,and PKS,hereafter collectively called XKS),P-and Pn wave travel time inversion,surface wave inversion from far-field earthquakes and ambient noise.Each of the above method has its own advantages and limitations.Thus,one or more of the above methods are often combined to characterize multi-layered anisotropy,of which the depth range of anisotropic layers are different.This paper reviews the research progress of multi-layered anisotropy for the purpose of providing a basis for future seismic anisotropy investigations.

关 键 词：Seismic anisotropy Multi-layered anisotropy Body wave Surface wave The lithosphere and the asthenosphere The crust and the upper mantle 

分 类 号：P315[天文地球—地震学]