| 重力潮汐改正 |
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| 引用本文： | 宋兴黎,于沉.重力潮汐改正[J].地球物理学报,1988,31(5):519-526. |
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| 作者姓名： | 宋兴黎 于沉 |
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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 |
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| 摘 要： | 高精度重力测量迫切要求提高重力潮汐改正的精度,本文应用现有的我国重力潮汐观测成果和海潮重力负荷改正计算结果,提出一组重力潮汐改正的实用计算公式。并且根据计算误差要求小于±1μGal的条件下,将我国划分为四个区,与合适的计算式相对应。此外,对近年来国外学者所提出的理论重力潮汐改正计算公式进行了评述,尤其对过去不曾注意的潮汐永久项（M0S0波）在潮汐改正中的影响进行了较详细的讨论。最后还对目前海潮负荷改正的精度提出了一些看法。
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| 关 键 词： | 重力潮汐改正 精度 长期潮 负荷改正 |
| 收稿时间： | 1987-01-10 |
GRAVITY TIDE CORRECTIONS |
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| SONG XING-LI YU CHEN.GRAVITY TIDE CORRECTIONS[J].Chinese Journal of Geophysics,1988,31(5):519-526. |
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| Authors: | SONG XING-LI YU CHEN |
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| Institution: | Institute of Geodesy and Geophysics, Acadcmia Sinica, Wuhan |
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| Abstract: | High-precision gravimetry is urgently needed to Improve the accuracy of gravity tide correction. By use of available gravity tide observations, calculations of gravity ocean tide corrections in China were made and actual formulas for computing the gravity tide corrections are proposed. With the requirement that the computed error is less than ±1μGal, Chinese territory was divided into four districts in order to make use of formulas. Additionally the theoretacal formulas of gravity tide correction suggested recently by foreign scholars have been reviewed, especially the effect of the permanent tide terms （M0 S0 wave） on the tide corrections, which has been neglected before, has been discussed in more detail. Finally, some discussion of the current accuracy of the loading correction of oceanic tides is given. |
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| Keywords: | Gravity tide correction Accuracy Permanent tide Loading correction |
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