地球物理学进展 ›› 1998, Vol. 13 ›› Issue (1): 84-100.doi:

• 论文 • 上一篇    下一篇

天再旦与日食

张培瑜   

  1. 中国科学院紫金山天文台, 南京 210008
  • 收稿日期:1997-06-14 出版日期:1998-02-10 发布日期:1998-02-10

″DAY DAWNED TWICE″ AND SOLAR ECLIPSE

Zhang Peiyu   

  1. Purple Mountain Astronomical Observatory CAS, Nanjing 210008
  • Received:1997-06-14 Online:1998-02-10 Published:1998-02-10

摘要: 《汲冢纪年》有“懿王元年天再旦于郑”的记载.今日学者大多认为是日食.果真如此,对研究地球自转的长期变化会有重要作用.本文考查了在懿王可能所处的966~895BC,72年中,有可能引起“天再旦”的日食.并从纪时日食的角度对地球自转不均匀引起的世界时改正数ΔT数值作了分析和讨论.

Abstract: There is an account in the Bamboo Annals states that "the day dawned twice at Zheng in the first year of King Yi". Zheng is the place name and Yi is a king in Zhou Dynasty in ancient China. Some scholars thought that the account is about an ancient solar eclipse. If this is really ture,it will be important for the study of variation of the earth's rotation. King Yi's age possibly is the period of 72 years from 966 B.C. to 895 B.C. In this paper,the account and some eclipses which occured in the period and may lead to the day dawned twice are studied and discussed. The ΔT derived from the eclipse and variation of the earth's rotation is also discussed.