长白山西土顶子3.7级地震前的水氡频谱特征

1986年8月22日长白山火山山深震区西土顶子发生了Ms3.7级浅源有感地震,本文计算了距震中27km的长白山1~#冷泉、2~#温泉及距震中161km的延边地震台山洞冷泉地震前后的水氡富里叶振幅谱。经频谱周期显著性检验后得出,各泉水氡均在震前出现了一定主周期的同步性振幅谱异常。

SPECTRAL CHARACTERISTIC OF HYDRORADON BEFORE CHANGBAI MOUNTAIN EARTHQUAKE WITH M_l=4.2

On August 22, 1986, a sensible shallow focus shock occured in volcano and deep earth- quake region of Changbai mountain. In this paper, the Tourier amplitude spectra of radon content in cool spring 1# and hot spring 2# of Changbai mountain area which are 27km, from the epicentre, and in the cool spring of the cave at Yanbians eismic station which is 161km from the epicentre have been computed before and after the shock. All springs apptar synchronous abnorma amplitude spectrum with some Period before the shock.