摘要
本文探讨了1900-1986年间全球大地震和ERP之间的相关性。利用震中位置和震源参数,按Dahlen公式计算了由地震引起的地球惯性张量变化。结果表明单个地震对日长和极移变化的影响要比经典仪器测定的ERP水平小两个量级。空间技术能够获得高精度的ERP,使得有可能用来进行ERP与地震关系的研究。
In this paper, the correlation between times of occurrence of global major earthquakes and ERP during 1900-1986 is studies. By using location and source parametere of the earthquakes as well as Dahlen formula, the change of Earth's inertia tensoe caused by an earthquake was calculation. It is shown that affect of a single earthquakr on the variation of both the length of day and pole motion (ERP) is two orders of magnitude smaller than that obtained by classical instruments. It is possible to farther investigate the influence of earthquakes on ERP with the high accuracy of the recent ERP data obtained by space techniques.
出处
《中国科学院上海天文台年刊》
1992年第13期26-32,共7页
Annals Shanghai Astronomical Observatory Chinese Academy of Sciences
基金
国家自然科学基金资助项目
