| 高精度大地测量中倾斜及应变观测的海潮改正 |
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| 引用本文： | 周旭华.高精度大地测量中倾斜及应变观测的海潮改正[J].大地测量与地球动力学,2001,21(3):21-25. |
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| 作者姓名： | 周旭华 |
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| 作者单位： | 中国科学院测量与地球物理研究所 |
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| 基金项目： | 国家自然科学基金 (4 96 34 140 ,4990 40 0 2 498740 0 4)，中国科学院资源环境领域知识创新工程重要方向资助项目 |
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| 摘 要： | 基于卫星测高资料得到的CSR4 .0全球海潮模型精度已明显优于早期海潮模型 ,采用精度高的海潮模型重新计算海潮改正是当今高精度大地测量中必须解决的问题。利用CSR4 .0全球海潮模型顾及中国近海海潮图计算了海潮引起中国测站的倾斜及应变海潮改正 ,此结果对我国倾斜及应变观测数据处理有重要的实用价值。另外 ,文中还比较了不同地球模型对应的格林函数对倾斜及应变海潮改正的影响 ,认为在计算中国测站的海潮改正时 ,用中国近海海潮图取代全球海潮的中国近海部分是必要的。
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| 关 键 词： | 倾斜及应变的海潮改正 海潮模型 |
| 修稿时间： | 2000年12月15 |
OCEAN TIDAL CORRECTIONS FOR TILT AND STRAIN OBSERVATION IN HIGH PRECISION GEODESY |
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| Zhou Xuhua.OCEAN TIDAL CORRECTIONS FOR TILT AND STRAIN OBSERVATION IN HIGH PRECISION GEODESY[J].Journal of Geodesy and Geodynamics,2001,21(3):21-25. |
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| Authors: | Zhou Xuhua |
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| Abstract: | The precision of CSR4.0 global ocean tidal model which based on TOPEX/Poseidon satellite altimeter is better than that of prior model. It is more important to calculate ocean tidal corrections by using most accurate ocean tidal models in high precision geodesy. Using CSR4.0 global ocean tidal model and local ocean tidal maps in China's Seas, we calculate ocean tidal corrections for tilt and strain at China geodetic stations in this paper, the results would be very valuable to process the data of tilt and strain observation. The effects on ocean tidal corrections caused by loading Green's functions corresponding with different earth model are also discussed. After comparing the effects, it is pointed out when calculating the ocean tidal corrections of China's stations the parts of the seas near China continent in global ocean tidal map should be replaced with the ocean tidal map of China seas. |
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| Keywords: | ocean tidal corrections to tilt and strain tidal model |
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