摘要
本文对河北及邻近地区的历史强地震的活动时间作了统计研究,发现河北及邻近地区强震存在50年周期现象,50年周期可能是反映河北及邻近地区地震较好的长期以来相对稳定的一种周期规律。
In this paper,made a statistical study on the history of Hebei and the neighboring regions strong earthquake activity time,the presence of a 50-year cycle phenomenon found in Hebei and the neighboring regions of strong earthquakes,the 50-year cycle may be reflect earthquake of Hebei and the neighboring areas better relatively stable periodic pattern for a long time.
引文
[1]张铁铮.地磁场变化与现代构造活动的相关关系[J].天地生综合研究进展,中国科学技术出版社,1989.
[2]顾功叙等.中国地震目录(1970-1979)[M].地震出版社,1983.
[3]中国科学院地球物理所.中国强震目录[M].地图出版社,1976.