Activity of the Southwest Segment of Xiadian Fault Investigated by Seismic Reflection Profiling

详细信息   

• 责任者：Gao Jinghua （Institute of Geophysical and Geochemical Exploration ; Langfang 065000 ; China） ; Xu Mingcai
• 刊名：Seismology and Geology
• 出版年：2008
• 卷期：30(2)
• 关键词：反射波法 ; reflection methods ; 活动断层 ; active faults ; 北京 ; Beijing
• 页码：p.497-504
• 图表：6 illus., 9 refs.
• 分类号：0300
• issnNo：ISSN0253-4967
• isbnNo：CN11-2192/P

摘要

Seismic method is a necessary exploration method for detecting active faults buried directly beneath major cities in deep coverage area. Different array length must be adopted for different detecting depth. The Xiadian Fault is a seismogenic fault and related to the 1679 Sanhe-Pinggu earthquake (M=8.0).The deep and moderate-deep structural characteristics of the fault are revealed from the deep and moderate-deep seismic profiles across the fault. To research the activity of the fault away from the earthquake region, moderate-shallow seismic reflection detection experiment was developed with the working parameters as 5 m group interval, 15 m offset, 10 folds, 60 active receiving channels, single-ended spread shooting by Wacker source, and one point receiving by 40 Hz geophones.