现行无量纲地震前兆信息分析方法的研究

研究了现行无量纲地震前兆信息的提取和表示方法：归一化、相对变化量、比值、从属函数、相关系数和斜率等方法。详细地讨论了无量震前兆参数的地震前兆特性及其年变化、日变化、随机变化和趋势性变化的形态特征。

STUDY ON UP TO DATE ANALYTICAL METHODS OF NON-DIMENSIONAL EARTHQUAKE PRECURSORY INFORMATION

With the help of Seismic Scientic Union Money Meet, we are doing some researches of non-dimensional information of earthquake precursors, searching one information of multiparameter of earthquake precursors. It is of important significance and useful in the research of the precursor field and the process of the development of earthquake. In this paper, we have done some researches of extracting and representative methods of non-dimensional information of earthquake precursors: normalling method,relative variation quantity method, ratio method, secondary function method, correlation coefficient method and oblique method.Then, we in detail discussed precursory features about non-dimensional parameters and their shape characters of annual variation, daily variation, radom variation and tendentiousvariation. Finally, we proposed one of the best ways of extracting earthquake precursory information of non-dimensional multi-parameter: root-mean-square-deviation method.