基于快速标量传递算法的频散曲线正演模拟

Forward Modeling of Dispersion Curves Based on Fast Scalar Transfer Algorithm

频散曲线的正演是瑞雷波资料处理过程中非常重要的步骤之一。正演是反演的前提和基础。快速稳定的正演计算是提高计算效率、减少反演用时的保障。根据国内外的研究结果,本文介绍了凡友华提出的快速标量传递算法的基本原理与方法,分别对三个不同的地质模型进行了频散曲线的正演计算,得到了不同地质条件下的频散特征,并与RT矩阵算法进行对比。数值模拟试验表明,快速标量传递算法是一种快速稳定的正演计算方法。

Forward dispersion curves is one of the most important steps of Rayleigh wave data processing. Forward modeling is the premise and basis of inversion. Fast and stable forward method is uesd to improve the efficiency of the calculation, and reduce the time of the use of the protection. According to the research at home and abroad, this article introduces the basic principles of fast scalar transfer algorithm proposed by Fan Youhua. Respectively, three different geological models of the dispersion curves forward calculation are introduced to obtain the dispersion characteristics in different geological conditionscompared with RT matrix algorithm. Numerical simulations experiments show that the fast scalar transfer algorithm is a fast and stable forward calculation method.