中文摘要：

我们从在中亚部署决定的地震车站处理周围的噪音数据外壳砍在 Tianshan Mountians 和包围区域下面的波浪速度结构。大约 748 内部车站的瑞利波浪实验格林鈥檚 功能被恢复了用图象转变技术从 6 ～ 50 s 在时期上估计阶段速度分散。结果为短时期显示出那(6 鈥 ? 0 s ) ，瑞利波浪阶段速度的分发与表面地质学通常一致，与相应于山脉的高速度和到沉积的盆的低速度。沿着二侧面，哪个从 NE-SW 和 NW-SE 的趋势， shear 波浪速度显示出在 Tianshan 山下面蘸在相反的方向的一双高速度异例。在浅深度，那些高速度异例粗略地与山前面和包围的盆被连接的区域相关。侧面也在 Tianshan 山下面显示出一个狭窄的地区，它可以从上面的披风为 upwelling 代表一条线路。那些观察建议盆和哈萨克盾与外壳的软弱结合的 Tarim 的 underthrusting，被 upwelling 从上面的披风加热，可以在与印度欧亚大陆碰撞联系的 Tianshan 山的复活上起一个重要作用。

英文摘要：

We process ambient noise data from seismic stations deployed in central Asia to determine the crustal shear wave velocity struc- ture beneath the Tianshan Mountians and surrounding area. About 748 inter-station Rayleigh wave empirical Green＇s functions have been recovered to estimate the phase velocity dispersions over periods from 6 to 50 s using the image transformation tech- nique. Results show that for short periods （6-20 s）, the distribution of Rayleigh wave phase velocities is generally consistent with surface geology, with high velocities corresponding to mountain ranges and low velocities to sedimentary basins. Along two pro- files, which trend from NE-SW and NW-SE, the shear wave velocity shows a pair of high velocity anomalies dipping in opposite directions beneath the Tianshan Mountains. At shallow depths, those high velocity anomalies roughly correlate with areas where the mountain front and the surrounding basin are connected. The profiles also show a narrow zone beneath the Tianshan Moun- tains, which may represent a route for the upwelling from upper mantle. Those observations suggest that the underthrusting of the Tarim Basin and Kazakh Shield combine with the weakness of the crust, which is heated by the upwelling from upper mantle, may play an important role on the reactivation of the Tianshan Mountains associated with the India-Eurasia collision.