聊古—1井氮氦比的熵值变化与地震的关系
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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.
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.
引文
〔1〕尹祥础，尹灿．非线性系统失稳的前兆与地震预报．中国科学，1991（5）：512—518〔2〕朱传镇，王林英．熵的原理与地震活动研究．地震研究，1988，11（6）：527—538〔3〕朱令人．大地震前地震信息熵的异常．地震地质，1988，（2）：29—38〔4〕王海涛，朱令人．地震前兆观测数据的信息熵分析．地震，1991，（5）：13—18〔5〕张昭栋，苏鸾声．各类地震前兆异常群体信息熵与地震的关系．中国地震，1994，10（增刊）：141—147
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