| Excitation of Annual Polar Motion by the Pacific, Atlantic and Indian Oceans |
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| 作者姓名： | JinMa Yong-Hong Zhou De-Chun Liao Jian-Li Chen |
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| 作者单位： | [1]Shanghai Astronomical Observatory, Chinese Academy of Sciences, Shanghai 200030 [2]Graduate School of Chinese Academy of Sciences, Beijing 100049 [3]Center for Space Research, University of Texas at Austin, Austin TX 78712, USA |
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| 基金项目： | Supported by the National Natural Science Foundation of China and Science and Technology Commission of Shanghai Municipality. |
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| 摘 要： | The global oceans play important roles in exciting the annual polar motion besides the atmosphere. However, it is still unclear about how large the regional oceans contribute to the annual polar motion. We investigate systemically the contributions of the Pacific, Atlantic and Indian Oceans to the excitation of the annual polar motion, based on the output data of ocean current velocity field and ocean bottom pressure field from ＂Estimating the Circulation and Climate of the Ocean （ECCO）＂ ocean circulation model over the period 1993-2005. The result shows that due to its particular location and shape, the Atlantic Ocean makes a less significant contribution to the x-component of the annual polar motion excitation than the Pacific and Indian Oceans, while all these three oceans contribute to the y-component of the annual polar motion excitation to some extent.
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| 关 键 词： | 励磁 极移 海洋型动量功能 大气动量学 天文学 |
| 收稿时间： | 2007-03-26 |
| 修稿时间： | 2007-05-11 |
Excitation of Annual Polar Motion by the Pacific, Atlantic and Indian Oceans |
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