摘要
通过计算中国大陆1989—2004年139次地震宏观震中与速报震中的偏离,得到了初步的结果;同时把中国大陆按照东经105°分为东部和西部,进一步研究分区特征,所得结果与整个大陆基本一致,都服从二维正态分布;最后给出了经验的中国大陆宏观地震震中—速报震中偏离的二维正态概率分布密度函数.这个结果对于减少地震灾害快速评估中的不确定性具有一定的意义.
The primary results have been obtained by the analyses on the deviation of macroscopic epicenters from relevant microscopic epicenters determined rapidly after the 139 earthquake events occurred during 1989-2004. Further study has proved the normal distributions exist in both the east and west parts of Chinese mainland divided along meridian 105°E. The empirical two-dimensional normal distribution functions for the deviations are presented in the paper. The results are of significance in reducing uncertainty of losses assessment immediately after a destroyed earthquake.
出处
《地震学报》
CSCD
北大核心
2006年第1期37-41,共5页
Acta Seismologica Sinica
基金
国家自然科学基金(40474023)资助
中国地震局地球物理研究所论著06AC1006
关键词
中国大陆
地震宏观震中
地震速报震中
正态分布
不确定性
Chinese mainland
macroscopic epicenter
microscopic epicenter
normal dis- tribution
uncertainty
