阳高6.1级地震前倾斜固体潮振幅因子熵的变化  

VARIATION IN THE ENTROPY OF AMPLITUDE FACTOR OF TILT TIDEBEFORE YANGGAO EARTHQUAKE (MS6.1)

作　　者：牛安福[1] 

机构地区：[1]国家地震局地震研究所

出　　处：《地壳形变与地震》1991年第2期1-7,共7页Crustal Deformation and Earthquake

摘　　要：本文从沙农(C.E.Shannon)的信息熵出发,定义了倾斜固体潮振幅因子(γ值)的信息熵。根据阳高地震周围若干台站γ值的计算结果,计算了各台γ值的熵。 文中对γ值熵变化的物理意义及与γ值变化的关系进行了必要的讨论,最后给出以下结论: 1.阳高地震的孕育过程伴随倾斜固体潮振幅因子熵的减少。 2.地震前,γ值熵的变化说明了γ值变化的相对平静现象亦可能是震兆的一种形式。这一结论对于震兆的认识无疑是一有益的补充。In this paper,Using C.E.Shannon's information entropy formula, the entropy of amplitude factor(γ) of tilt tide is defined. In accordance with results of γ value at some stations around the Yanggao earthquake, the entropy of γ value is calculated, and the varying curve is obtained also. The geophysical meaning of entropy change of γ value and the relation to γ value are discussed in detail. Lastly, the conclusion are obtained as follows:1. Preparation of the Yanggao earthquake is accompanied by reducing entropy of amplitude factor of tilt tide.2. From reduction of entropy of γ value before earthquke, it is could be shown that the relative calm of the γ value may be a precursor of earthquake.

关 键 词：地震 前兆 固体潮 振幅因子 熵 

分 类 号：P315.7[天文地球—地震学]