The stabilization of high-order multistep schemes for the Laguerre one-way wave equation solver

JOURNAL OF COMPUTATIONAL PHYSICS

卷:368

Article

Terekhov, Andrew V.¹ 

[1] Inst Computat Math & Math Geophys, Novosibirsk 630090, Russia

关键词: One-way wave equation;    Finite difference method;    Acoustic waves;    Predictor-corrector;    Adams-Moulton schemes;   

DOI  :  10.1016/j.jcp.2018.04.059

来源: Elsevier

【 摘 要 】

This paper considers spectral-finite difference methods of a high-order of accuracy for solving the one-way wave equation using the Laguerre integral transform with respect to time as the base. In order to provide a high spatial accuracy and stability, the Richardson method can be employed. However such an approach requires high computer costs, therefore we consider alternative algorithms based on the Adams multistep schemes. To reach the stability for the one-way equation, the stabilizing procedures using the spline interpolation were developed. This made it possible to efficiently implement a predictor-corrector type method thus decreasing computer costs. The stability and accuracy of the procedures proposed have been studied, based on the implementation of the migration algorithm within a problem of seismic prospecting. (C) 2018 Elsevier Inc. All rights reserved.

【 授权许可】

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