摘要
用接收函数研究地壳各向异性,首先要提取高质量的接收函数,然后计算接收函数Ps震相的分裂或拟合Ps震相随后方位角的变化特性来提取地壳的各向异性参数。在提取接收函数的方法中,频率域方法简单,执行效率高;时间域方法精度高、稳定性好。与先前的方法相比,接收函数的各向异性研究针对整个地壳,对于更准确地分析地壳结构、了解壳幔耦合关系、岩石圈形变及动力学特征具有重要的意义。作为研究各向异性的方法之一,接收函数的各向异性研究仍然在发展之中,会有更广阔的发展前景。
When we study seismic anisotropy with receiver functions, we should calculate receiver functions with high quality firstly, and then extract splitting parameters from analysing Ps wave splitting in receiver functions or fitting back-azimuthal variations of synthetic receiver functions to observed ones. The methods of estimating receiver functions, frequency domain techniques are simple and efficient, time domain are accurate and stabilized. Compared with previous methods, receiver-functions is focused on the whole crust, so it has significant importance for analysing crust structure, understanding the coupling relationship between crust and mantle, the deformation of lithosphere and it’s dynamics characteristic. As one of those methods which are focused on seismic anisotropy, seismic anisotropy from receiver-functions study is still in development, we believe that it will it have wider prospect for application.
出处
《CT理论与应用研究（中英文）》
2012年第4期769-779,共11页
Computerized Tomography Theory and Applications
基金
科技部国际科技合作与交流专项重点项目(2010DFB20190)
关键词
接收函数
地壳各向异性
Ps震相
方法
receiver functions
seismic anisotropy of crust
Ps phase
methods
