摘要
复杂山区近地表调查技术是制约地震资料品质的主要因素。这里利用地质雷达和高密度电法相配合,在四川南江山区进行了近地表结构综合调查。地质雷达探测精度高,高密度电法探测深度大且能有效补充介质电性信息。通过微测井数据进行标定,建立了近地表结构的深度和速度模型,为地震静校正提供了依据。经研究结果表明,采用近地表调查数据进行静校正的地震品质得到了提高。
The near-surface survey techniques in complex mountain areas is a key factor controlling the seismic acquisition quality. This paper uses the ground penetrating radar (GPR) and the high density resistivity method to survey near-surface structure in Nanjiang mountain areas of Sichuang. The GPR can provide high precision structure of sub-surface, but the resistivity method can survey more deep and get resistivity information. Then it used microlog to correct the data, ultimately obtained the near-surface depth and velocity model for static correction of seismic data. The results shows that the seismic acquisition quality becomes better by static correction with near-surface survey data.
出处
《物探化探计算技术》
CAS
CSCD
2011年第4期381-385,346,共5页
Computing Techniques For Geophysical and Geochemical Exploration
关键词
近地表调查
建模技术
南江山区
near-surface survey
modeling study
Nanjiang mountain area
