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Analysis on the Abnormal Changes of Outflow,O_2+Ar,N_2 and He in No.1 Spring at Wushan Station

YANG Xing-yue1,WANG Yi1,WANG Yan2,LIAO Zhen-xiang1,LI Shu-quan1,ZHU Zhen-jia2(1.Wushan Seismological Station,Earthquake Administration of Gansu Province,Gansu Wushan 741308,China;2.Tianshui Seismological Station,Earthquake Administration of Gansu Province,Gansu Tianshui 741020,China)  
The gas data of No.1 spring at Wushan station show that there were some obviously abnormal changes of outflow from 1997 to 1999 and in 2003,meanwhile,values of O2+Ar,N2 and He in the gas abnormal changed completely and synchronously with outflow.In this paper,the reason of the changes of outflow is analyzed.It is considered that the significant variety is not a dynamical nature.It is tested and verified by experiment that the influence factors on values of O2+Ar,N2 and He in the gas in spring water are outflow,circulation time and air sneaked into the water.The relationships and change characteristics are analyzed also.
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