西秦岭北缘断裂带断层土壤气观测分析  

OBSERVATION AND ANALYSIS OF FAULTY GROUND GAS IN THE WESTERN QINLING NORTH FAULT ZONE

作　　者：赵洁 苏鹤军 周卫东 杨超 田野 王娟 马可兴 ZHAO Jie;SU Hejun;ZHOU Weidong;YANG Chao;TIAN Ye;WANG Juan;MA Kexing(Gansu Earthquake Agency,Lanzhou 730000,China;Lanzhou Geophysics National Observationand ResearchStation,Lanzhou 730000,China)

机构地区：[1]甘肃省地震局,甘肃兰州730000 [2]兰州地球物理国家野外科学观测研究站,甘肃兰州730000

出　　处：《高原地震》2023年第1期1-9,共9页Plateau Earthquake Research

基　　金：甘肃省地震局科技发展野外站基金(项目编号:ZX2117004);甘肃省地震局创新团队专项(项目编号:2019TD-02-03)联合资助。

摘　　要：对西秦岭北缘断裂带定点台站(马窑、毛集、原家庄)断层土壤气氡、二氧化碳、痕量氢、甲烷观测资料使用正常动态分析方法,从潮汐、气温、气压、降雨方面进行对比分析。分析结果表明:断层土壤气体背景值稳定,与气温呈正相关,与气压呈负相关;断层土壤气能够反应固体潮潮汐变化;气氡、痕量氢和甲烷在地震前表现出明显的临震特点。Observations of radon,carbon dioxide,trace hydrogen and methane in the soil of fixed stations a⁃long the northern margin of the Western Qin Mountains Fault Zone(Mayao,Maoji,Yuanjiazhuang)were car⁃ried out using the normal dynamic analysis method.The results show that the background value of soil gas on the fault is stable,and has positive correlation with air temperature and negative correlation with air pressure The fault soil gas can reflect the change of tide,and radon,trace hydrogen and methane show obvious charac⁃teristics of impending earthquake before earthquake.

关 键 词：西秦岭北缘断裂带 断层土壤气 异常 

分 类 号：P315.723[天文地球—地震学]