| 用快速差分法模拟二维非均匀介质中的弹性波 |
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| 引用本文： | 周家纪,王铎.用快速差分法模拟二维非均匀介质中的弹性波[J].石油地球物理勘探,1993,28(6):666-672. |
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| 作者姓名： | 周家纪 王铎 |
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| 作者单位： | 哈尔滨工业大学博士后力学站，哈尔滨工业大学博士后力学站，成都理工学院 Mechanics Department Harbin Industrial University Harbin City Heilongjiang Province Internal Postcode:150006 |
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| 基金项目： | 本项目由国家自然科学基金会、中科院、中国石油天然气总公司、大庆石油管理局联合资助 |
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| 摘 要： | 本文提出一种在任意二维非均匀性介质中模拟波场的快速有效方法。该方法建立在空间微分的最佳差分算子的基础上（Ｈｏｌｂｅｒｇ，１９８７）的基础上，采用类似于Ｖｉｒｉｅｕｘ（１９８６）所用的那种交错网络技术，在不同网格点上计算不同的波场量。这种方法能在大空间网格点是得到精确的波场值，其计算速度比常规有限差分格式至少快一个数量级，比伪谱法快３～５倍。
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| 关 键 词： | 差分法 地震数据 弹性波 弹性介质 |
Elastic wave modeling in 2-D inhomogeneous medium by fast difference method. |
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| Zhou Jiaji Wang Duo He Zhenhua Mechanics.Elastic wave modeling in 2-D inhomogeneous medium by fast difference method.[J].Oil Geophysical Prospecting,1993,28(6):666-672. |
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| Authors: | Zhou Jiaji Wang Duo He Zhenhua Mechanics |
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| Affiliation: | Zhou Jiaji Wang Duo He Zhenhua Mechanics Department,Harbin Industrial University,Harbin City,Heilongjiang Province,Internal Postcode:150006 |
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| Abstract: | A fast method for wave field modeling in any 2-D inhomogeneous medium is presented here.The method,based on the optimized difference operator for spacial differential (Holberg,1987),adopts the staggered grid scheme similar to that of Virieux(1986),and calculates the wave field which differs at different grid points. This method results in accurate wave field values at points in large scale grids.Its computation is at least one order of magnitude faster than that in conventional finite difference scheme.It is 3 to 5 times faster than pseudo spectrum methods. |
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| Keywords: | difference method finite difference operator seismic data processing forward modeling |
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