| 武昌重力潮汐基准研究 |
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| 引用本文： | 宋兴黎,毛慧琴.武昌重力潮汐基准研究[J].地球物理学报,1991,34(3):381-385. |
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| 作者姓名： | 宋兴黎 毛慧琴 |
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| 作者单位： | 中国科学院测量与地球物理研究所, 武汉 430077 |
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| 摘 要： | 为了检验和完善理论地球模型和海潮模型,必须提高重力潮汐观测的精度。这除了提高仪器的精度以外,关键问题在于仪器的格值的准确性,因为它是衡量潮汐参数的尺度。但是,各种类型重力仪的出厂格值存在着误差,且各成系统,其系统偏差可达1％-2％。需要高精度的潮汐基准与之比较,统一和确定重力仪的格值。根据国际地潮中心的观测结果分析,布鲁塞尔潮汐基准系统可能偏大。因此,建立我国重力潮汐基准,对固体潮观测与研究具有重要意义。
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| 关 键 词： | 重力 潮汐 观测 |
| 收稿时间： | 1988-10-05 |
STUDY OF THE TIDAL GRAVITY STANDARD IN WUCHANG |
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| SONG XING-LI MAO HUI-QIN.STUDY OF THE TIDAL GRAVITY STANDARD IN WUCHANG[J].Chinese Journal of Geophysics,1991,34(3):381-385. |
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| Authors: | SONG XING-LI MAO HUI-QIN |
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| Institution: | Institute of Geodesy and Geophysics, Acadcmia Sinica, Wuhan 430077 |
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| Abstract: | In order to improve the accuracy of the gravity tide observation, the main problem is the accurate determination and unification of the scale of all the tide observation results, it will be of great significance to establish a high accuracy standard earth tide observation system, so a gravity vertical base line was established in Wuchang, 17 gravimeters G and 2 gravimeters D were employed for baseline observations. The calibration result of LaCoste ET21 in the bas-line finds manufacturer's scale is systematically large about 1.1%. The results of three years series with ET21 from the Institute of Physical Geodesy and a one year series with ET15 from the Institute of Oceanographic Sciences are quite agreement, and the gravity tide parameters in Wuhang station obtained are:δO1= 1.1777 Δ（?）O1= -0.44°δM2= 1.1744 Δ（?）M2=-0.42°in comparison with Bruxelles system there is systematic discrepancy: -0.2% in amplitude and 0.4°in O1 phase. |
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| Keywords: | Gravity tide Standard |
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