摘要
利用信息熵的新方法处理了聊古—1井氮氦比10年来的观测资料,找出了氮氦比信息熵的两次较大变化与地震的关系。以聊古—1井为中心的150km范围内,自观测以来发生过两次大于5.0级(Ms)地震,即1981年的宁晋5.8级和1983年的菏泽5.9级地震。在这两次地震前氮氦比信息熵都出现了明显的低值异常变化。这可能反映了系统在较大地震前的减熵有序变化。
Observatory data of N 2/He ratio measured in Liaogu well No.1 for 10 years were processed by information entropy, from which a relation between information entropy variation of N 2/He ratio and earthquake is found. There are two earthquakes with Ms 5.0 occurred within 150 km from Liaogu well No.1 since the observation has started, the earthquake of M=5.8 in 1981 in Ningjin and the one of M=5.9 in 1983 in Heze. Information entropy of N 2/He ratio appeared remarkable anomalous variations of low values before the two earthquakes, which probably reflects the sequential variation of entropy reduction in the system before moderate-strong earthquake.