SKS splitting measurements with horizontal component misalignment

作     者：Xiaobo Tian,~1 Jianli Zhang,~1 Shaokun Si,~1 Jingbo Wang,~2 Yun Chen~1 and Zhongjie Zhang~1 1 State Key Laboratory of Lithospheric Evolution,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing 100029,China. 2 Lawrence Livermore National Laboratory,7000 East Ave L-231,Livermore,CA 94550,USA 

会议名称：《中国科学院地质与地球物理研究所第11届（2011年度）学术年会》

会议日期：2012年

学科分类：070904[理学-构造地质学] 0709[理学-地质学] 07[理学] 

基　　金：supported by grants from the Chinese National Natural Science Foundation(Nos. 40974025 to X.Tian and 40721003 to Z.Zhang) National Key Project 2008ZX05008-006 to ZZ 

关 键 词：Broad-band seismometers Body waves Seismic anisotropy Computational seismology 

摘      要：SUMMARY The measurement of SKS splitting parameters is widely used for the study of deformation in the upper mantle,but the misalignment of the station horizontal components,for example misorientation of the sensors,may result in false *** this paper,we suggest that the splitting analysis should be repeated with different assumed angles of misalignment. Two criteria can be applied to correct the measurement of the SKS splitting parameters: (1) the horizontal rotating angle should produce the global minimum transverse energy,as determined using the least transverse energy method;(2) there should be consistent results between the least transverse energy method and the minimum eigenvalue *** tests show that the method is suitable for complex anisotropy models,such as two-layer anisotropy.