震级频度偏离G-R关系前兆含义的震例研究

英文篇名：Study on the precursory implications of deviation of magnitude-frequency from the Gutenberg-Richter relation in some earthquake cases
中文刊名：地震工程与工程振动
英文刊名：Journal of Earthquake Engineering and Engineering Vibration
作者：段玉石 ; 路鹏 ; 林玮
英文作者：DUAN Yushi ; LU Peng ; LIN Wei(Institute of Disaster Prevention ; Yanjiao 065201 ; China)
中文关键词：拟合优度参数法 ; G-R关系 ; 地震前兆 ; 震级频度
英文关键词：goodness-of-fit parameter method ; G-R relation ; earthquake precursor ; magnitude-frequency
出版日期：2010-12-15
机构：防灾科技学院;
年：2010
期：06
出版单位：地震工程与工程振动

摘要

本文采用拟合优度参量方法,对华北地区部分中强以上地震震前区域中小地震震级频度偏离G-R关系开展了震例研究,得出华北地区部分地震前拟合优度参量时空变化特征,对探求地震前兆具有一定的指示意义。研究结果表明:部分中强以上地震震前一定时期,地震活动不同程度地存在着震级频度偏离G-R关系的现象,震级越大,震前偏离G-R关系越明显,这种偏离与地震发生所处地块无关联。
In this paper, we adopt goodness-of-fit parameter method to study the earthquake cases in North China in terms of deviation of magnitude-frequency from the Gutenberg-Richter relation(G-R relation),which may have some precursory significance for earthquake prediction. The results show that in some cases, the earthquake activity does not necessarily accord with the G-R relation before strong earthquakes’ occurrence. The stronger a earthquake is, the larger the deviation of magnitude-frequency from the Gutenberg-Richter relation would be, but also no association is observed between the deviation and the massif where the earthquake occurs.

引文

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