| 高阶交错网格有限差分法的地震波场数值模拟 |
| |
| 引用本文： | 杨圳,李蓉艳,岳继光,萧蕴诗. 高阶交错网格有限差分法的地震波场数值模拟[J]. 北方交通大学学报, 2012, 0(5): 68-72,83 |
| |
| 作者姓名： | 杨圳 李蓉艳 岳继光 萧蕴诗 |
| |
| 作者单位： | 同济大学电子与信息工程学院,上海200092 |
| |
| 基金项目： | 国家自然科学基金资助项目（40872090） |
| |
| 摘 要： | 基于地震波波动方程和有限差分法,针对多种不同的复杂地质模型,进行高阶交错网格地震波场模拟仿真研究.首先对地震波波动方程原始形式进行推演,得到一阶速度应力弹性波方程,然后用时空二元高阶交错差分网格的方法对其进行离散化,最后对三层背斜模型、断层模型和含油模型进行了数值模拟实验,获取相应的波场快照和地震道图像进行对比分析,并讨论了差分阶次对于仿真精度的影响.仿真结果表明：算法计算精度准确,计算效率高,适合于模拟非均匀介质、复杂构造和复杂地质体的地震波场.
|
| 关 键 词： | 地震波 波动方程 高阶 交错网格 有限差分法 |
Seismic wave field numerical modeling with high-order finite-differential method |
| |
| YANG Zhen,LI Rongyan,YUE Jiguang,XIAO Yunshi. Seismic wave field numerical modeling with high-order finite-differential method[J]. Journal of Northern Jiaotong University, 2012, 0(5): 68-72,83 |
| |
| Authors: | YANG Zhen LI Rongyan YUE Jiguang XIAO Yunshi |
| |
| Affiliation: | (College of Electrical and Information Engineering,Tongji University,Shanghai 200092,China) |
| |
| Abstract: | Based on seismic wave equation and finite-differential method,seismic wave field numerical modeling with high-order staggered mesh is studied for different complicated geographical mode.First,seismic wave equation is derived to obtain one-order stress-velocity equation,then,the equation is discretized in time and space by staggered mesh finite-differential method.This method is used to simulate three-level strata sloping downward model,fault model and oil layer model and the differential order of the simulation accuracy is discussed.The results indicated this method is suit for simulating non-homogeneous media and complicated geographical mode with high accuracy and efficiency. |
| |
| Keywords: | seismic wave wave equation high-order staggered mesh finite-differential method |
| 本文献已被 维普 等数据库收录！ |
|
