摘要
根据地震前震源及周围地区出现的空区的时空特征,提出了一种估计"区域-时间-长度"算法中特征参数(特征距离和特征时间)的方法,并介绍了2006年一些学者提出的用相关系数估计特征参数的方法.用这两种方法研究了近年来发生在中国大陆西北和西南地区的4次中强地震前的地震活动异常特征.结果表明,本文提出的估计特征参数的方法是一种具有物理意义、使用简单的方法,对中国大陆西北和西南地区的4次中强震的应用都有较好的效果.
On the basis of gap＇s temporal-spatial characteristics in and around source area before an earthquake, we propose a method to estimate characteristic parameters （characteristic distance and time） in the region-time-length （RTL） algorithm and introduce the method of correlation coefficient developed by some authors in 2006 to determine the characteristic parameters. The anomalous seismic activities before four moderately strong earthquakes occurred in the northwestern and southwestern China in recent years are studied by the two methods. The results show that the method to estimate characteristic parameters advanced in this paper is a simple one, which possesses a physical meaning and is well applicable to the four moderately strong earthquakes studied.
出处
《地震学报》
CSCD
北大核心
2007年第3期250-257,共8页
Acta Seismologica Sinica
基金
国家自然科学基金(40574026)
地震科学联合基金(D07024)资助
关键词
RTL算法
特征距离
特征时间
RTL algorithm
characteristic distance
characteristic time
