【摘要】 随着地震勘探要求和技术的不断提高,散射波地震勘探方法逐渐引起人们的重视,尤其在具有广角性质的工程地震勘探中,基于非均匀介质理论的散射波理论具有广泛的应用前景。本文在讨论了现阶段几种散射波数值模拟方法的各种利弊后,设计了一种基于微扰论的FK域积分法,该方法求取总场后再通过FK域积分法求取散射场,在散射场的二次震源和空间能量衰减处理两方面做了改进,散射场的计算精度和效率均得到了提高。更多还原

【Abstract】 The scattered wave seismic method is now well appreciated and developed with the gradually technical requirements and level of seismic survey.Particularly in engineering seismic survey which is related to wide range,it has been widely applied owing to heterogeneous medium.Different current numerical modelings of scattered wave have their own advantages and disadvantages.This paper has designed a kind of integration in FK domain based on perturbation theory to solve scattered field,which could obtain scattered field by integration in FK domain after getting the total wave field.It has improved the data source of scattered field and the processing of space energy.The computational accuracy and efficiency of scattered field have been much better.In addition,an attempt is also made to demonstrate the above in two ways: theory and test of modeling.更多还原