河西地区速度异常分布

THE VELOCITY ANOMALY DISTRIBUTION IN HEXI AREA,GANSU PROVINCE

摘要:

本文利用联合反演的层析成象的方法,配合快速两点射线追踪法,处理了河西地区地震台网记录到的天然地震走时资料,得到了该地区中、上地壳三维速度异常分布图象,并根据反演结果,对河西地区地震危险性进行了初步探讨。

Abstract:

Using the method of seismic tomographic image of joint inversion and rapid two-point ray-tracing method to process the arrival-time data of natural earthquakes recorded by regional Hexi seismic network, we obtained the 3-D velocity anomaly distribution of the upper and middle crust in Hexi area. According to the inversion results, the earthquake risk in Hexi area is discussed.