Seismic Exploration Methods for Buried Faults and Its Up-Breakpoint in Thin Sediment Areas——An Example of the Feihuanghe Fault
详细信息
- 责任者：Gu Qinping (Earthquake Administration of Jiangsu Province ; Nanjing 210014 ; China) ; Kang Qingqing
- 刊名：Chinese Journal of Geophysics
- 出版年：2013
- 卷期：56(5)
- 关键词：隐伏构造 ; subsurface structure ; 地震勘探 ; seismic exploration ; 江苏 ; Jiangsu Province
- 页码：p.1609-1618
- 图表：illus., 25 refs.
- 分类号：1600
- issnNo：ISSN0001-5733
- isbnNo：CN11-2074/P
摘要
We have obtained the exact location and depth of up-breakpoint and velocity distribution image of the Feihuanghe fault in the line control by joint inversion of seismic exploration methods(common offset seismic reflection,shear wave reflection and high-resolution refraction)on the same line.The results indicate that in fault investigations for thin Quaternary sediments,the joint inversion of the above three technical methods is not only more reliable than using any one of them alone to identify the location,nature and characteristics of faults by different means,but also provides seismological evidence for the position layout of composite drilling sections and the depth designing of drilling.According to the confirmation of high-precision composite drilling geological sections,the main stratigraphic interfaces and tectonic features obtained from the three kinds of seismic exploration methods are quite consistent with the results from the composite drilling geological section.The experimental results show the feasibility of the joint inversion of the above three kinds of seismic exploration methods in thin Quaternary sediments and the efficiency of the combination of seismic exploration and composite drilling geological profiles.
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