地球物理学进展 ›› 1999, Vol. 14 ›› Issue (4): 18-27.doi:

• 论文 • 上一篇    下一篇

固体液体分界面处P波和S波波场的分离

张秉铭1, 董敏煜1, 滕吉文2, 张中杰2   

  1. 1. 石油大学, 北京 102200;
    2. 中国科学院地球物理研究所, 北京 100101
  • 收稿日期:1999-08-19 出版日期:1999-12-25 发布日期:1999-12-25

P- AND S-WAVES FIELD SEPARATION AT A LIQUID-SOLID INTERFACE

Zhang Bingming1, Dong Minyu1, Teng Jiewen2, Zhang Zhongjie2   

  1. 1. China Petroleum University, Beijing 102200;
    2. Institute of Geophysics, CAS, Beijing 100101
  • Received:1999-08-19 Online:1999-12-25 Published:1999-12-25

摘要: 在地震勘探中,P波和S波入射到一固体液体分界面处时,在该分界面处的水平检波器和垂直检波器将接受到相应的响应.垂直检波器的响应与在自由界面处的垂直检波器的响应大概相同,而水平检波器对P波的响应相对于对S波的响应来说要强.本文发展了一种在τ—P域内,利用检波器响应特性分离P波和S波波场的新方法.并用合成的弹性波地震数据验证了本方法的可行性和实用性

Abstract: P- and S- seismic wave impinging on a liquid-solid interface give rise to energy on both horizontal and vertical geophones in seismic exploration. The response of the vertical geophone at an interface is quite similar to that on a free interface. The horizontal geophone has a stronger response to impinging P-wave and a smoother response to incident S-wave. A filtering method working in domain has been developed in this article,which separate P- and S-wave field by taking into account the geophone response. Its feasibility and practicability are verified with synthetic elastic wave data.

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