1. School of Earth Sciences and Engineering,Xi’an Shiyou University,Xi’an　 710065,China;2. Langfang Geophysical and Geochemical Exploration Institu-te,Chinese Academy of Geological Science,Langfang　 065000,China

瑞雷面波勘探是解决近地表地质问题的一种重要方法和手段,其数据处理的核心内容之一是提取瑞雷面波相速度。在二维傅里叶变换的基础上,借鉴了传统反射波速度分析方法的思想,通过瑞雷面波相速度与频率、波数之间的关系以及瑞雷面波有效探测深度与波长之间的关系,将实测多道瞬态瑞雷面波频率-波数(f-k)谱转换成深度-相速度(H-vR)谱,最终形成了一套有效的泛fk域瑞雷面波速度分析方法。通过模型数据处理证明了该方法的有效性,并进一步应用于一套城市活断层地震资料处理,结果表明,该方法能有效提取近地表地质信息,而且精度高、抗噪能力强。

Rayleigh wave survey is an important method to solve the near-surface geological problems,and an important technical aspect of this method is the extraction of the Rayleigh wave phase velocity. Based on the conventional reflec- tion wave velocity analysis method,an effective phase velocities analysis method of Rayleigh wave in pan f-k domain is proposed. In the method proposed,the relationship among phase velocity,frequency and wave number,and the relation- ship between penetration depth and wavelength are employed in order to transform the frequency-wave number (f-k) spectrum into depth-phase velocity (H-vR ) spectrum. The effectiveness of the method is proved by the analysis of one example model data and one set of real seismic data for urban active fault survey. The analysis results show that the method can effectively extract near-surface geological information with high precision and strong resistance to noise.

中石油科技创新基金研究资助项目(2010D-5006-0303；2014D-5006-0303)；陕西省教育厅重点实验室科研计划资助项目(13JS093)；

Shen Hongyan,Yan Yueying,Zhang Baowei. Rayleigh wave velocity analysis in pan f-k domain[J]. Journal of China Coal Society,2016, 41(8):2033-2040.