| 起伏地表二维瑞雷面波正演模拟及波场分析 |
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| 引用本文： | 熊章强,南坤,唐圣松.起伏地表二维瑞雷面波正演模拟及波场分析[J].物探化探计算技术,2010,32(5):470-475. |
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| 作者姓名： | 熊章强 南坤 唐圣松 |
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| 作者单位： | 中南大学信息物理工程学院;西安地质矿产研究所; |
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| 摘 要： | 采用高精度交错网格有限差分法,建立了在起伏地表条件下瑞雷面波数值模拟的自由边界条件,通过对倾斜二层模型模拟的结果与解析解对比,二者完全一致,由此证明了起伏地表下瑞雷面波数值模拟的正确性。在此基础之上,模拟并分析了小凸起与小凹陷模型条件下,瑞雷面波的波场传播特征。通过分析得出瑞雷面波在这二种地形传播时,都存在反射、波型转换,以及能量再分配。因此,在起伏地表条件下,利用瑞雷面波进行勘探时要考虑起伏地表对瑞雷面波波场的影响。
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| 关 键 词： | 起伏地表 瑞雷面波 交错网格有限差分 正演模拟 |
Forward modeling and wave field analysis of 2D Rayleigh wave based on irregular topography |
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| XIONG Zhang-qiang,NAN Kun,TANG Sheng-song.Forward modeling and wave field analysis of 2D Rayleigh wave based on irregular topography[J].Computing Techniques For Geophysical and Geochemical Exploration,2010,32(5):470-475. |
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| Authors: | XIONG Zhang-qiang NAN Kun TANG Sheng-song |
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| Institution: | XIONG Zhang-qiang1,NAN Kun1,TANG Sheng-song2(1.School of Info-Physics and Geometrics Engineering,Central South University,Changsha 410083,China,2.Xi'an Institute of Geology and Minerals Resources,Xi'an 710000,China) |
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| Abstract: | A free surface condition for Numerical Simulation of Rayleigh wave has been built by using high precision staggered grids finite difference.The result of two inclined layer model simulating shows that error between numerical and analytic solutions is almost equivalent,which proves that Numerical Simulation of Rayleigh wave based on irregular topography is correct.Basis on this,we have got the propagation characteristics of Rayleigh wave from modeling a small heave topography and a small depressed topography... |
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| Keywords: | irregular topography rayleigh surface wave staggered grid finite difference forward modeling |
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