%0 Journal Article
%T Off_great circle propagation of Love waves in eastern Qinghai_Xizang Plateau<br>青藏高原东部Love波偏振研究
%A ZHENG Yue-Jun
%A HUANG Zhong-Xian
%A LIU Jian-Hua
%A XU Yi
%A <br>郑月军
%A 黄忠贤
%A 刘建华
%A 胥颐
%J 地球物理学报
%D 2006
%I 
%X The data of three-component digital surface wave from 50 portable seismograph stations located in west Yunnan, China, were collected and analyzed in this study. A frequency domain singular value decomposition method was used for polarization analysis ; and the polarizations of intermediate period Love waves traveling through the Qinghai-Xizang Plateau were calculated and evaluated. The result shows that there are obvious polarization anomalies, which could be due to the lateral heterogeneity of the lower crust and uppermost mantle velocity structure in the wave propagation path. Besides, theoretical arrival azimuths were computed by using the velocity model from a previous tomographic study. There is general consistency between the theoretical result and the majority of the observations, though the theoretical anomalies are often smaller than the observations. The result of present study indicates the correctness of our velocity model, as well as the complexity of the lithosphere in this area which is not fully reflected in the model.
%K Qinghai-Xizang Plateau
%K Love wave polarization
%K Crust and upper mantle velocity structure<br>青藏高原
%K Love波偏振
%K 地壳上地幔速度结构
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=E62459D214FD64A3C8082E4ED1ABABED5711027BBBDDD35B&cid=1E44AE713D8A6DE0&jid=14DC41C59CBF6770055A7D610D53AE46&aid=8DCD0DDDB4F1C3FA&yid=37904DC365DD7266&vid=2A3781E88AB1776F&iid=E158A972A605785F&sid=305A58D956DD6BAF&eid=F79A45851FD04E0C&journal_id=0001-5733&journal_name=地球物理学报&referenced_num=7&reference_num=25