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根据横波的吸收性编制了天山和塔里木盆地西区的上地幔图。在综合分析短周期Lg波群及其尾波的动力学特征的基础上,得到了研究区内Lg波群及尾波的公共包络线,证明了根据吸收性编制软流层图的高精度,查明了天山上地幔中吸收场与速度场的平均特征的相似性。比较天山地区上地幔吸收参数与地震活动性的结果表明,强震发生在上地幔中吸收性强的延伸带上。
The upper mantle map of the Tianshan Mountains and the western Tarim Basin was compiled based on the absorption of shear waves. Based on a comprehensive analysis of the dynamic characteristics of the Lg wave group and its coda wave in the short period, the common envelope of the Lg wave group and the coda wave in the study area is obtained. It is proved that the high precision , The similarity of the average characteristics of the absorption and velocity fields in the upper mantle of the Tianshan Mountains was ascertained. Comparing the absorption parameters and seismicity of the upper mantle in the Tianshan Mountains shows that strong earthquakes occur in the highly absorbing extensional zones of the upper mantle.