一级毛片免费不卡在线视频,国产日批视频免费在线观看,菠萝菠萝蜜在线视频免费视频,欧美日韩亚洲无线码在线观看,久久精品这里精品,国产成人综合手机在线播放,色噜噜狠狠狠综合曰曰曰,琪琪视频

A Check on the Variations of Earths

時(shí)間:2023-04-29 05:22:46 天文地理論文 我要投稿
  • 相關(guān)推薦

A Check on the Variations of Earths Rotation with an Ancient Solar Eclipse

We address the relation between an ancient total eclipse, which occurred on A.D.1542 August 11 and the variation of Earth's rotation. The total eclipse was recorded in some ancient Chinese books, especially in local chronicles. Some of the documents include useful information for determining the location of the totality zone. The parameters of the eclipse are calculated by using the DE406 Ephemeris.A high-precision value of AT which expresses the variation of the Earth's rotation,of about 300 ~ 380 s, is obtained.

作 者: Yan-Ben Han Qi-Yuan Qiao   作者單位: National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012  刊 名: 天體物理學(xué)報(bào)(英文版)  ISTIC SCI 英文刊名: CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS  年,卷(期): 2003 3(6)  分類號(hào): P14  關(guān)鍵詞: solar eclipse - Earth rotation  

【A Check on the Variations of Earths 】相關(guān)文章:

Special lecture on rare earths held in Inner Mongolia04-26

Variations in seed germination of Hippophae salicifolia with different presoaking treatments04-26

4A Unit 5 Review and check教學(xué)反思04-28

第29講:rain check; it never rains...05-04

FEATURES AND COMPARISONS OF THE QUASI-BIENNIAL VARIATIONS IN THE ASIA-PACIFIC MONSOON SUBSYSTEMS04-27

The retrieval of two-dimensional distribution of the earths surface aerodynamic roughness using SAR image and TM thermal04-27

Temporal and spatial variations of atmospheric methane concentration and δ13C-CH4 near the surface on the Millor Peninsu04-27