| 区域分解法地震正演模拟方法研究 |
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| 引用本文： | 杨绍国,周熙襄.区域分解法地震正演模拟方法研究[J].地球物理学报,1996,39(5):690-698. |
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| 作者姓名： | 杨绍国 周熙襄 |
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| 作者单位： | 成都理工学院电子工程系, 成都 610059 |
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| 基金项目： | 油气藏地质与开发工程国家重点实验室,地质矿产部开放研究实验室资助 |
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| 摘 要： | 区域分解法是近年开辟的计算偏微分方程数值解的一种新方法，该方法把研究区域分解为形态规则的小区域，在各子区域内采用最有效的方法求解，能充分发挥各种正演模拟方法的优点，大大地提高求解正演问题的有效性．本文首次把区域分解法引入地震正演模拟，构造出了适应性强、计算速度快、所需计算机资源量小，具有高度并行性的区域分解地震正演模拟方法，编制了区域分解地震正演模拟软件，对大量地质模型进行了计算，获得了良好的结果．
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| 关 键 词： | 区域分解法 正演模拟 非均匀介质 均匀层状介质 |
DOMAIN DECOMPOSITION SEISMIC WAVEFIELD FORWARD MODELLING |
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| YANG SHAO-GUO, ZHOU XI-XIANG.DOMAIN DECOMPOSITION SEISMIC WAVEFIELD FORWARD MODELLING[J].Chinese Journal of Geophysics,1996,39(5):690-698. |
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| Authors: | YANG SHAO-GUO ZHOU XI-XIANG |
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| Institution: | Chengdu Institute of Technology, Chengdu 610059, China |
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| Abstract: | Domain decomposition method, which has been developed in recent years,is a new algorithm for the numerical solution of the partial differential equations. The method decomposes the seismic model into many subdomains which have simple forms. According to the characteristics of the subdomains the method chooses the most suitable computational method which has high computing efficiency in each of the subdomains,so can full advantage of each of the existing method for computing seismic wavefields and greatly improve the computing efficiency for the seismic wavefield modelling. In this paper, the author gave in first a domain decomposition seismic forward modelling algorithm which has the advantages of good adaptability,high computing efficiency,less requirement of computer capacity and good parallel computing architectures.Programs have been complied, according to the theory of the method, to compute synthetic seismograms and a great number of model tests show the success of the method. |
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| Keywords: | Domain decomposition method Forward modelling Inhomogeneous media Homogeneous layered media |
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