青藏高原南缘中强地震震源机制的研究

The study on the mechanism of strong-moderate earthquakes occurred at the Qinghai-Tibet Plateau southern margin

利用全球数字化地震台网（ＧＳＮ）长周期数字地震波形资料，对发生在喜马拉雅碰撞带的３ 次中强地震事件， 根据广义射线理论， 就其震源物理过程进行了反演。结果表明， 印度洋板块向欧亚板块内部的俯冲作用过程仍在继续进行。

Using long-period w ave form data from GSN,according to the generalray theory,w e presented the inversion results of three strong-m oderate earthquakes occurred at the Hi- m alayan convergence zone. The study show s thatthe underthrusting process betw een the Indian plate and the Eurasian plate is stillcontinuing.