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Position: Home > Articles > COMPUTATION OF ASTRONOMICAL VARIABLES Transactions of Oceanology and Limnology 2003 (3) 98-102

天文变量的计算

作  者:
黄磊;黄祖珂;陈宗镛
单  位:
青岛远洋船员学院航海系;中国海洋大学海洋环境学院
关键词:
潮汐;天文变量;J2000.0系统
摘  要:
根据IUGG第十届全体会议决议,1984年起采用新的天文常数,属于J2000.0系统。现在潮汐计算中仍普遍采用J1900.0系统的公式计算天文变量。本文依据2个系统的公式计算了天文变量。计算表明,依据新旧2个系统计算的天文变量对潮汐的计算造成的差异很小,J1900.0系统的计算公式仍可继续使用到2099年。尽管如此,本文认为目前在潮汐计算中应该根据IUGG第十届全体会议决议的要求采用J2000.0系统的公式计算天文变量。
译  名:
COMPUTATION OF ASTRONOMICAL VARIABLES
作  者:
HUANG Lei, HUANG Zuke,CHEN Zongyong (Institute of Navigation, Ocean Shipping Mariner's College of Qingdao, Qingdao 266071,China; Institute of Environment, Ocean University of China,Qingdao 266003,China)
关键词:
tide;astronomical variables;Epoch J2000. 0
摘  要:
According to the resolution adopted at the tenth IUGG plenary meeting,new astronomical constants which belonged to Epoch J2000. 0 should be adopted from 1984. But at present astronomical variables are usually still computed by the formulae of Epoch J1900. 0 in the calculation of tides. In this paper, astronomical variables are computed by the formulae of Epoch J1900. 0 and J2000. 0. The calculations indicate that the differences between the values computed by the new and old formulae are very small and the formulae of Epoch J1900. 0 can be used until the year of 2099. Even so we consider that the formulae of Epoch J2000. 0 should be adopted to compute astronomical variables in the calculation of tides according to the resolution at the tenth IUGG plenary meeting.

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