| 非均匀各向异性弹性波场正演 |
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| 引用本文： | 阮爱国,李清河.非均匀各向异性弹性波场正演[J].西北地震学报,2001,23(4):318-329,338. |
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| 作者姓名： | 阮爱国 李清河 |
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| 作者单位： | 1. 中国地震局兰州地震研究所,
2. 江苏省地震局, |
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| 基金项目： | 地震科学联合基金资助课题(198115);中国地震局兰州地震研究所论著编号:LC2001054 |
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| 摘 要： | 推导了用于非均匀各向异性弹性波场正演的伪谱法基本公式，对特征值法边界修正方程进行了全面的理论推导，给出了二维和三维问题固体，流体的特征变量及各类边界修正方程，选用2个模型，模拟了2．5维弹性波场，对S波分裂的偏振图像和时间延迟作了较详细的分析。
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| 关 键 词： | 弹性波 各向异性介质 伪谱法 特征变量 特征值法 数值模拟 |
| 文章编号： | 1000-0844(2001)04-0318-12 |
| 收稿时间： | 2000/12/8 0:00:00 |
FORWARD SIMULATION OF ELASTIC WAVES FIELD IN INHOMOGENEOUS ANISOTROPIC MEDIUM |
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| RUAN Ai-guo and LI Qing-he.FORWARD SIMULATION OF ELASTIC WAVES FIELD IN INHOMOGENEOUS ANISOTROPIC MEDIUM[J].Northwestern Seismological Journal,2001,23(4):318-329,338. |
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| Authors: | RUAN Ai-guo and LI Qing-he |
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| Institution: | RUAN Ai guo 1,LI Qing he 2 |
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| Abstract: | The basic formula of pseudo spectral method are derived for simulating inhomogeneous anisotropic elastic waves field. The boundary modifying equations of characteristic variables method are derived thoroughly which have been presented by previous authors separately, and the explicit formula of 3D and 2D problems of solid and liquid media are given. 2.5D elastic wave field of two models are simulated,moreover, the polarization and time delay of S wave splitting are discussed in detail. |
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| Keywords: | Elastic wave Anisotropic medium Pseudo spectral method Characteristic variable |
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