Characteristics of the Laoyachen Fault in Zhengzhou Revealed by Shallow Seismic Data of P-Wave and S-Wave

详细信息   

• 责任者：Liu Baojin (Geophysical Exploration Center ; China Earthquake Administration ; Zhengzhou 450002 ; China) ; Zhao Chengbin
• 刊名：Seismology and Geology
• 出版年：2008
• 卷期：30(2)
• 关键词：浅层地震勘探 ; shallow seismic exploration ; 活动断层 ; active faults ; 河南 ; Henan
• 页码：p.505-515
• 图表：5 illus., 11 refs.
• 分类号：1600
• issnNo：ISSN0253-4967
• isbnNo：CN11-2192/P

摘要

In order to find out the location, characteristics and activities of the Laoyachen Fault in Zhengzhou, the high-resolution shallow seismic P and S wave survey profiling across the Laoyachen Fault was carried out at the end of 2006, and different seismic sources along with combinations of diverse observation geometries with different parameters were used. The fine structures in different depths beneath the profile were obtained and the patterns as well as characteristics of the Laoyachen Fault were determined. The results show that the Laoyachen Fault, running in NW and dipping in NE, is a normal fault and its dip angle is about 60°～70°, which incises strata of Eocene, Permian, Carboniferous or Ordovician epoch and goes up to the top boundary of Eocene stratum at the 800～850m depth.