• 责任者：Li Ying (Institute of Earthquake Science ; China Earthquake Administration ; Beijing 100036 ; China) ; Du Jianguo
• 刊名：Acta Seismologica Sinica
• 出版年：2009
• 卷期：31(1)
• 关键词：地震前兆 ; precursor ; 气体地球化学测量 ; gaseous geochemical surveys ; 北京 ; Beijing ; 河北 ; Hebei Province
• 页码：p.82-91
• 图表：3 illus., 2 tables, 47 refs.
• 分类号：0500
• issnNo：ISSN0253-3782
• isbnNo：CN11-2021/P

Geochemical background and origin of soil gases in the Yanhuai Basin are discussed based on the regional seismogeological data and concentration of Rn, Hg, CO₂, H₂, He and CH₄ in soil gas measured at 422 investigating sites in field during September to October, 2007. The geochemical backgrounds of the soil gases are higher in the eastern part of the Yanhuai Basin. The main factors affecting the gasgeochemical background are gaseous origin structure of the crust, faults, stratum and microbe activity. The result can be applied to identify seismic precursor from monitoring data of gases in the studied area.