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对１９８３～１９９５年兰州五泉山泉水溶气Ｎ２的观测值进行了数学处理，发现该组分在祁连山构造带东段几次中强地震前均有前兆异常显示．同时还对异常机理进行了初步探讨
Based on the mathematical treatment of the observed value of spring dissolved water N2 in Wensunshan of Lanzhou from 1983 to 1995, it is found that there are some precursory anomalies before several moderate earthquakes in the eastern segment of Qilianshan structural belt. At the same time, the abnormal mechanism is also discussed