Oceanic effects on polar motion determined from an ocean model and satellite altimetry: 1993-2001 - art. no. B02411
文献类型：期刊论文
| 作者 | Chen, JL; Wilson, CR; Hu, XG; Zhou, YH; Tapley, BD |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
 |
| 出版日期 | 2004-02-26 |
| 卷号 | 109期号:B2页码:B0241 |
| 关键词 | polar motion OGCM satellite altimeter ocean |
| 英文摘要 | [1] Mass redistribution and motion in the oceans are major driving forces of geodetic variations, including polar motion, length of day, geocenter, and gravity field changes. We examine oceanic contribution to polar motion using estimates from a data-assimilating ocean general circulation model and satellite radar altimeter observations. The data include model estimates of variations in oceanic mass (OBP) and meridional and zonal velocities. Sea level anomalies from TOPEX/Poseidon (T/P) satellite altimeter measurements and steric sea surface height changes deduced from the model are also used to estimate OBP effects. Estimated oceanic contributions from both the model and T/P show considerably better agreement with polar motion observations compared with results from previous studies. The improvement is particularly significant at intraseasonal timescales. Both OBP and ocean current variations provide important contributions to polar motion. At intraseasonal timescales the oceans appear to be a dominant contributor to residual polar motion not accounted for by the atmosphere. The oceans also play an important role in seasonal excitation. Combined OBP and ocean current contributions explain much of the residual semiannual variability. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Geochemistry & Geophysics |
| 研究领域[WOS] | Geochemistry & Geophysics |
| 关键词[WOS] | SEA-LEVEL CHANGE ; EARTHS POLE ; ROTATION ; LENGTH ; MASS ; VARIABILITY ; EXCITATION ; SIGNALS ; CLIMATE ; BUDGET |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000220218300004 |
| 源URL | [http://119.78.226.72/handle/331011/18298]  |
| 专题 | 上海天文台_天文地球动力学研究中心 |
| 作者单位 | 1.Univ Texas, Space Res Ctr, Austin, TX 78759 USA 2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China 3.Univ Texas, Dept Geol Sci, Austin, TX 78759 USA |
| 推荐引用方式 GB/T 7714 | Chen, JL,Wilson, CR,Hu, XG,et al. Oceanic effects on polar motion determined from an ocean model and satellite altimetry: 1993-2001 - art. no. B02411[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,2004,109(B2):B0241. |
| APA | Chen, JL,Wilson, CR,Hu, XG,Zhou, YH,&Tapley, BD.(2004).Oceanic effects on polar motion determined from an ocean model and satellite altimetry: 1993-2001 - art. no. B02411.JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH,109(B2),B0241. |
| MLA | Chen, JL,et al."Oceanic effects on polar motion determined from an ocean model and satellite altimetry: 1993-2001 - art. no. B02411".JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH 109.B2(2004):B0241. |
入库方式： OAI收割
来源：上海天文台
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