用反射波旅行时对层状介质进行成像的新方法

根据地震波的射线理论，给出了利用反射波旅行时对层状介质进行成像的新方法。在局部范围内可将地层各界面视作为平面，求取界面，速度诸参数，整个剖面的成像只需反复在局部内求解。数值试验表明：本方法具有较高精度和收敛速度快等特点，适用于横向变化小，界面起伏比较平缓的地质剖面成像。

A new method for layeredmedium image using reflection travel time

According to the ray theory of seismic wave,we advanced a new method for layered--medium image using reflection travel time. In the method,formation interface in small extent can be considered as a plane ;with the use of estimated parameters such as interface, velocity and so on, the image of a whole section can beachieved only by making repeated solutions in small extents. The numerical trials indicate that because this method is characterized by high accuracy,fast convergence and so on,it is applicable to image of the seismic section which shows small lateral variation and gentle interface undulation.