| 非潮汐海洋运动对地球动力学扁率变化的贡献 |
| |
| 引用本文： | 胡小工,Jian-Li CHEN,黄珹,B.D.Tapley,C.R.Wilson. 非潮汐海洋运动对地球动力学扁率变化的贡献[J]. 地球物理学报, 2004, 47(3): 428-432 |
| |
| 作者姓名： | 胡小工 Jian-Li CHEN 黄珹 B.D.Tapley C.R.Wilson |
| |
| 作者单位： | 中国科学院上海天文台,上海,200030;Center for Space Research, University of Texas at Austin, Austin, Texas |
| |
| 基金项目： | 国家自然科学基金 (40 3740 0 2 )，中国科学院知识创新工程重要方向项目 (KJCX2 SW T1 )联合资助 |
| |
| 摘 要： | 通过考察全球海洋环流数值模型以及TOPEX/Poseidon海洋测高数据，得到结论：1997/1998年后的部分J2异常变化可能来自海洋环流变化导致的质量重新分布，具体地说是太平洋环流变化导致的从高纬地区向低纬地区的质量迁移. 本工作表明来自于海洋内部温盐效应的变化对J2异常变化有重要贡献，进一步证实了卫星激光测距资料所得结果的可靠性.
|
| 关 键 词： | 重力场变化 海洋环流 质量迁移 激光测距 |
| 文章编号： | 0001-5733(2004)03-0428-05 |
| 收稿时间： | 2003-01-17 |
| 修稿时间： | 2003-12-04 |
NON-TIDAL OCEANIC CONTRIBUTION TO THE VARIATION OF THE EARTH OBLATENESS |
| |
| HU Xiao Gong Jian Li CHEN HUANG Cheng B.D.Tapley C.R. Wilson Shanghai Astronomical Observatory,Chinese Academy of Sciences,Shanghai, Center for Space Research,University of Texas at Austin,Austin,Texas. NON-TIDAL OCEANIC CONTRIBUTION TO THE VARIATION OF THE EARTH OBLATENESS[J]. Chinese Journal of Geophysics, 2004, 47(3): 428-432 |
| |
| Authors: | HU Xiao Gong Jian Li CHEN HUANG Cheng B.D.Tapley C.R. Wilson Shanghai Astronomical Observatory Chinese Academy of Sciences Shanghai Center for Space Research University of Texas at Austin Austin Texas |
| |
| Affiliation: | 1.Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai, 200030 2 Center for Space Research, University of Texas at Austin, Austin, Texas |
| |
| Abstract: | We investigate two ocean models for model validation and the altimetry data from TOPEX/Poseidon (T/P) and conclude that the mass transfer within the oceans, specifically within the Pacific Ocean, contribute to at least part of the variation of the Earth oblateness ( J 2 ) since 1997/1998. The abnormal J 2 variation since 1997/1998 may be from the variations of the steric effects, which are the result of thermal and saline variation, and might not be easily discerned from the sea surface height variations observed with the T/P data. |
| |
| Keywords: | Gravity change Oceanic circulation Mass transfer Satellite laser ranging. |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
| 点击此处可从《地球物理学报》浏览原始摘要信息 |
|
点击此处可从《地球物理学报》下载免费的PDF全文 |
