物探化探计算技术2019，Vol.41Issue(1)：18-26,9.DOI:10.3969/j.issn.1001-1749.2019.01.04
基于LSQR算法的二维声波方程频率域正演模拟与数值实现
Frequency domain forward modeling and numerical implementation of two-dimensional acoustic wave equation based on LSQR algorithm
张鑫磊 1陈建宇1
作者信息
- 1. 中国石油大学(北京)地球科学学院,北京 102200
- 折叠
摘要
Abstract
The frequency domain forward is the basis of the freguency domain full-waveform inversion (FWI).How to efficiently and accurately complete the frequency domain computation is a hot issue in this field at present. In this paper, we use the optimized 17 point difference scheme and PML to construct wave field, and the use of the LSQR algorithm for solving the wave field. Through simple layered model and the Overthrust model calculation show that LSQR algorithm can greatly improve the calculation speed and accuracy of frequency domain modeling. Therefore, a feasible technical means is provided for the study of this direction.关键词
频率域正演/优化17点格式/PML边界条件/LSQR算法Key words
frequency domain forward modeling/17 point scheme/PML boundary condition/LSQR algorithm分类
天文与地球科学引用本文复制引用
张鑫磊,陈建宇..基于LSQR算法的二维声波方程频率域正演模拟与数值实现[J].物探化探计算技术,2019,41(1):18-26,9.
