大地电磁法三维交错采样有限差分数值模拟

被引:104
作者
谭捍东
余钦范
John Booker
魏文博
机构
[1] 中国地质大学地球物理与信息技术学院,中国地质大学地球物理与信息技术学院,UniversityofWashington,Seattle,中国地质大学地球物理与信息技术学院北京,中国科学院地质与地球物理研究所,北京,北京,USA,北京
关键词
大地电磁法; 交错采样有限差分法; 三维正演; 边界条件; 双共轭梯度稳定解法;
D O I
暂无
中图分类号
P631.325 [];
学科分类号
0818 ; 081801 ; 081802 ;
摘要
系统地论述了大地电磁三维交错采样有限差分数值模拟算法实现过程中交错网格剖分、积分公式离散化、边界条件、方程组求解、三维张量阻抗的计算等内容 .由于提出了简洁的边界条件 ,采用了解大型系数矩阵方程组的双共轭梯度稳定解法 ,所实现的三维交错采样有限差分数值模拟算法具有迭代收敛稳定、计算精度高、速度快等特点 .通过两个理论模型的计算结果检验了算法的正确性和计算精度 .所实现的三维交错采样有限差分数值模拟算法为研究三维反演问题奠定了基础 .
引用
收藏
页码:705 / 711
页数:7
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