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转换波射线追踪正演对于转换波的理论研究、转换波资料处理、转换波资料解释和转换波野外施工设计都是一个重要的工具。阐述多层倾斜界面情况下,转换波射线追踪的基本原理、实现方法和利用此方法算出的三个模型的正演实例。以多层介质转换波观测系统为基础,设计的正演模型主要有:(1)一层倾斜介质模型;(2)两层倾斜介质模型;(3)三层倾斜介质模型。采用试射法为主要正演方法,对上述三种模型进行正演。最终得出模型图、射线路径图和地震响应图等图件,得出每一层的上行波和下行波,验证算法的有效性。
Conversion wave ray tracing forward modeling is an important tool for the theoretical study of converted wave, converted wave data processing, converted wave data interpretation and converted wave field construction design. The basic principle of the converted wave ray tracing, the realization method and the forward modeling examples of the three models calculated by this method are expounded in the case of multi-layer inclined interface. Based on the multi-layer medium wave conversion observation system, the forward model is mainly composed of: (1) a layer of incline medium model; (2) two-layer incline medium model; (3) three-layer incline medium model. Using test-firing method as the main forward method, the above three models are forwarded. Finally, the model map, the ray path map and the seismic response map are obtained. The up-going wave and the down-going wave of each layer are obtained to verify the effectiveness of the algorithm.