论文部分内容阅读
本文从考查仪器格值变化入手,论证了观测资料的可靠性。在分析泰安台站两年零八个月内M_2波γ值变化规律的基础上,讨论了潮汐因子动态变化与1983年11月7日05时09分菏泽5.9级地震的关系。发现自1983年4月以后,γEW(M_2)出现了系统性偏离。其偏移量为γ因子平均值的1％左右。同时,运用NAKAI法预处理数据,还可以察觉该次地震的短临前兆现象。
This article starts with the examination of the grid value of the instrument, and demonstrates the reliability of the observed data. Based on the analysis of the variation of γ wave of M_2 wave in Tai’an station within two years and eight months, the relationship between the dynamic change of tidal factor and Heze M5.9 earthquake on 05 November 09, 2007 at 7:00 p.m. was discussed. It has been found that γEW (M_2) has systematically deviated since April 1983. The offset is about 1% of the average of the gamma factor. At the same time, using the NAKAI method to preprocess the data, we can also detect the short-term precursory phenomenon of the earthquake.