| 由面波求表层横波速度 |
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| 引用本文： | 黄绪德. 由面波求表层横波速度[J]. 勘探地球物理进展, 2004, 27(1): 9-15 |
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| 作者姓名： | 黄绪德 |
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| 作者单位： | 原地矿部计算中心,北京 100083 |
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| 摘 要： | 介绍了用面波的谱分析法（SASW)及多道分析法(MASW)求取近地表横波速度剖面。对MASW的采集、处理、反演作了详细介绍。用雅可比矩阵分析了产生瑞雷波相速度的各参数的灵敏度，证明纵波速度、密度、厚度对相速度的影响较小，横波速度是主要因素。用加权最小二乘法、LM法和奇异值分解（SVD)求得反演公式，用模型和实例证明反演稳定，用井中数据核实精度可靠。
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| 关 键 词： | 波；相速度；横波速度；工程地质；水文地质；环境地质 |
| 文章编号： | 1671-8585(2004)01-0009-07 |
| 收稿时间： | 2002-12-21 |
Calculation of near surface shear velocity from surface waves |
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| Huang Xude. Calculation of near surface shear velocity from surface waves[J]. Progress in Exploration Geophysics, 2004, 27(1): 9-15 |
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| Authors: | Huang Xude |
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| Affiliation: | (SINOPEC Research Institute of Petroleum Exploration and Production, Beijing 100083, China) |
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| Abstract: | This paper discusses the calculation of near surface shear velocity by spectral analysis of surface waves (SASW) and multichannel analysis of surface waves (MASW). The data acquisition and processing of the MASW method is described in detail. The sensitivity of different parameters to phase velocity of Rayleigh wave is studied by Jacobian matrix analysis. Phase velocity is mainly affected by shear velocity and less influenced by P-wave velocity, density, and thickness. Inversion formulae are derived by weighted least-square method, Leven-berg-Marquardt method, and singular value decomposition. The stability of inversion scheme is tested on model and real data. Results are verified with well data. |
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| Keywords: | surface wave phase velocity shear velocity engineering geology hydrological geology envinmental geology shear wave static correction |
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