| 地震波正演模拟有限元法在微机上的实现 |
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| 引用本文： | 赵明月,李桐林,刘希芳,林君. 地震波正演模拟有限元法在微机上的实现[J]. 吉林大学学报(地球科学版), 1998, 0(4) |
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| 作者姓名： | 赵明月 李桐林 刘希芳 林君 |
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| 作者单位： | 长春科技大学信息技术学院 |
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| 摘 要： | 有限元法是复杂介质地震模拟的有力工具，它能比较客观地反映地震波传播过程，比较细致地再现地震图像。但由于有限元法地震模型所需网格节点数多、数据规模大，使它的计算受到限制。采用对角化集中质量矩阵、刚度矩阵变二维为一维存贮，并通过使用有限差分吸收边界条件来处理地质模型的人为边界反射问题，从而使计算所需内存降低，计算时间减少，并能比较好地实现地震声波用有限元法计算，理论模型的计算结果验证了算法的正确性和可行性。
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| 关 键 词： | 地震波 有限元 正演模拟 VSP技术 |
A FINITE ELEMENT METHOD OF SEISMIC WAVE FORWARD SIMULATION WITH MICROCOMPUTER |
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| Zhao Mingyue,Li Tonglin,Liu Xifang,Lin Jun. A FINITE ELEMENT METHOD OF SEISMIC WAVE FORWARD SIMULATION WITH MICROCOMPUTER[J]. Journal of Jilin Unviersity:Earth Science Edition, 1998, 0(4) |
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| Authors: | Zhao Mingyue Li Tonglin Liu Xifang Lin Jun |
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| Abstract: | Finite element method is a useful tool for modeling seismic wave in complex medium. It can simulate seismic wave propagation realestically and display seismic wave fields in quite detailed way. Its performance on microcomputer is restricted because of both too many grid points and tremendous data which are needed in the finite element modeling. The use of diagonalization matrix and the method of changing the 2D stiffness matrix to 1D can make calculation easier . The use of absorption sides can make the seismic wave field clearer. The correctness and efficiency of this algorithm is proved by the results of theoretical modeling. |
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| Keywords: | seismic wave finite element forward simulation VSP technology |
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