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地球科学进展  2006, Vol. 21 Issue (5): 482-486    DOI: 10.11867/j.issn.1001-8166.2006.05.0482
研究论文     
确定卫星重力场中的海潮负荷影响问题
孙和平,周江存,彭碧波
中国科学院测量与地球物理研究所,湖北 武汉 430077
Effect of Ocean Tide Loading on Satellite Gravity Determination
Sun Heping,Zhou Jiangcun,Peng Bibo
Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan 430077,China
 全文: PDF(82 KB)  
摘要:

概要综述了确定卫星重力场恢复中的海洋负荷潮汐改正理论和精度估算问题。利用TPXO6海潮模型计算了海潮对卫星重力恢复的影响,与GRACE观测误差实施了对比。结果说明海潮M2波对卫星重力场恢复的影响最大,并主要体现在40阶以下的位系数上。海潮模型误差对低阶卫星重力场恢复的影响也是比较明显的。相关结果可有效降低GRACE恢复的低价重力场位系数的潮汐成分,为我国相应的学科研究提供有效参考。

关键词: 重力位系数卫星重力海潮负荷阶方差    
Abstract:

The theory and error estimation of the influence of ocean tide on the determination of satellite gravity recovery are described briefly. Using the ocean tide model of TPXO6, the effect of ocean tide on gravity determination is investigated and compared with the error of recovered gravity by GRACE. The result shows that M2 constituent of ocean tide contributes most and mainly to the potential coefficients of degrees below 40 and that the error of ocean tide also notably affects the gravity determination of low degrees. This result is adopted to reduce the tidal component in recovered gravity of low degrees and provides reference in relative studies.

Key words: Satellite gravity    Degree variance.    Gravity coefficients    Ocean tide loading
收稿日期: 2005-06-14 出版日期: 2006-05-15
:  P223/P312  
基金资助:

中国科学院知识创新工程重要方向性项目“地球深内部结构和动力学研究”(编号:KZCX3-SW-131) ;院百人计划项目“重力场时间变化在地球动力学研究中的应用”;国家自然科学基金项目“利用国际超导重力仪观测资料研究地球自由振荡”(编号:40374029)资助.

通讯作者: 孙和平     E-mail: heping@asch.whigg.ac.cn
作者简介: 孙和平(1955-),男,江苏江阴人,博士,研究员,主要从事地球重力场及其地球动力学应用研究.E-mail: heping@asch.whigg.ac.cn
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引用本文:

孙和平,周江存,彭碧波. 确定卫星重力场中的海潮负荷影响问题[J]. 地球科学进展, 2006, 21(5): 482-486.

Sun Heping,Zhou Jiangcun,Peng Bibo. Effect of Ocean Tide Loading on Satellite Gravity Determination. Advances in Earth Science, 2006, 21(5): 482-486.

链接本文:

http://www.adearth.ac.cn/CN/10.11867/j.issn.1001-8166.2006.05.0482        http://www.adearth.ac.cn/CN/Y2006/V21/I5/482

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