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Application of Ultra-shallow Seismic Survey to the Wanggezhuang Fault in Qingdao
Yang Qiyan,You Huichuan,Di Long
作者单位
Yang Qiyan Hebei GEO University, Shijiazhuang 050031, China 
You Huichuan Institute of Geophysics, China Earthquake Administration, Beijing 100081, China 
Di Long Hebei GEO University, Shijiazhuang 050031, China 
摘要:
At present, there is less theoretical research and practical experience in the aspect of ultra-shallow seismic exploration to the target layers at depths of only tens of meters both at home and abroad. Seismic exploration plays an important role in the location of faults and active structures, but the depth dozens of meters below the ground surface is the blind area of any kind of deep and shallow seismic exploration. Starting from the point of view of detecting urban active faults, and using related theories and methods of geology, geophysics and mathematics, the paper discusses the preconditions for acquiring efficient ultra-shallow seismic survey results in complicated geological backgrounds in Qingdao. Taking the Qingdao area as an example in this paper, we study the depth condition of Quaternary deposits, and apply 4-8 stacking folds to satisfy the requirement to get the exploration results with high-resolution and high-SNR. Preliminary results reveal that selecting a proper surveillance layout is one of the keys to acquire authentic exploration results in ultra-shallow P-wave reflection exploration. Our results also show that ultra-shallow seismic reflection method in detecting faults in the Qingdao area has good application prospects.
关键词:  Ultra shallow seismic survey  Observation system  Wanggezhuang fault  f-k filtering
DOI:
分类号:
基金项目:This project sponsored by the PhD Research Foundation of Hebei GEO University (BQ2017027).
Application of Ultra-shallow Seismic Survey to the Wanggezhuang Fault in Qingdao
Yang Qiyan,You Huichuan,Di Long
Abstract:
At present, there is less theoretical research and practical experience in the aspect of ultra-shallow seismic exploration to the target layers at depths of only tens of meters both at home and abroad. Seismic exploration plays an important role in the location of faults and active structures, but the depth dozens of meters below the ground surface is the blind area of any kind of deep and shallow seismic exploration. Starting from the point of view of detecting urban active faults, and using related theories and methods of geology, geophysics and mathematics, the paper discusses the preconditions for acquiring efficient ultra-shallow seismic survey results in complicated geological backgrounds in Qingdao. Taking the Qingdao area as an example in this paper, we study the depth condition of Quaternary deposits, and apply 4-8 stacking folds to satisfy the requirement to get the exploration results with high-resolution and high-SNR. Preliminary results reveal that selecting a proper surveillance layout is one of the keys to acquire authentic exploration results in ultra-shallow P-wave reflection exploration. Our results also show that ultra-shallow seismic reflection method in detecting faults in the Qingdao area has good application prospects.
Key words:  Ultra shallow seismic survey  Observation system  Wanggezhuang fault  f-k filtering