甘肃景泰6.2级地震的断层气体前兆研究

Research on the fault—gas precursorsassociated with the Jingtai M6.2 Earthguake, Gansu Province

本文用大量资料对景泰6.2级地震前的断层气体异常现象作了分析和研究。结果表明,位于发震断裂的固原点的气Rn、Co_2及距震中最近的古浪点气Hg、H_2的中长期异常和短临异常都十分突出。本次地震的异常范围达五百公里以上,共有13个项次的气体出现异常,其中Hg、H_2的信息量最大。研究迹表明,由于He、Ne都是地球深部核裂变的产物,因此He、Ne突跳的出现是断层现今活动加剧的表现,也是本次6.2级强震的中期前兆。

Analysis and research on the fault—gas precursorg phenomena before the Jingtai M6. 2Earthquake are made based on a lot of data. Tha results show that the gases Rn and CO_2 at Guyuan site on the earthquake—generating fault and gases Hg and H_2 at the nearest Gulang site from seismic center have very distinctive medium—long term ,short term and impending earthquake precursors. The extent of this earthquake an0maly is up to more than 500 km,associated with 13 kinds and/or times of gas anomalies,in which Hg and H_2have the most informations. Kesearches also suggest that the sudden variation of He and Ne is the expression of increasing activity of the fault,and is medium term precursor of the present strong earenguake,because He and Ne are product of nuclear fusion in depth of the earfh.