摘要
本文在历书时系统下计算了发生在公元 136 1年 5月 5日的日全食的参数 ,分析了中国古代两地 ,即浙江的松江和天台对这次日全食观测到近中心日食食相的详细记载 ,并依计算结果和对记载的分析 ,采用移动中心食带的方法确定Δλ ,得到表示地球自转变化的高精度ΔT值为 4 80s± 6 0s .
In this paper,the parameters of a total solar eclipse occurred in A.D. 1361 5 5 are calculated according to ET system. The authors analyzed the records of Chinese ancient books,which are from two observational places,on the solar eclipse. The near central solar eclipse with large magnitude was observed and recorded in detail at two places,Songjiang and Tiantai in Zhejing province. It is obtained a ΔT,480s±60s,that describes the variation of the Earth's rotation with high precision using the special records and a new method,that determines Δλ by moving the central path of solar eclipse according to calculation and records.
出处
《地球物理学进展》
CSCD
2000年第1期108-110,共3页
Progress in Geophysics
基金
国家自然科学基金!No . 195 730 11
