Contribution of oceanic and atmospheric excitations to the Chandler wobble
文献类型：期刊论文
| 作者 | Liao, DC; Liao, XH; Zhou, YH
|
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2003-07-01 |
| 卷号 | 46期号:4页码:455-461 |
| 关键词 | oceanic angular momentum atmospheric angular momentum chandler wobble excitation function coherence |
| 英文摘要 | By using the data sets of the oceanic and atmospheric angular momentum during 1985 similar to 1995, the mean energy of the oceanic and atmospheric excitation in Chandler wobble band (CWB) is estimated and compared with that of the geodetically observed excitation. Results show that the variation of the oceanic angular momentum (OAM) can provide about 64 % of the excitation energy in CWB with a dominant contribution of the oceanic bottom pressure, while the excitation energy provided by the atmospheric angular momenta (AAM (NCEP/NCAR) and AAM(JMA)) is about 23 % and 214 % in comparison with the observed one. Squared coherence, 0.52 (0.32 and 0.37), is also estimated between the observed excitation and the OAM (AAM (NCEP/NCAR) and AAM(JMA)) excitations. Coherent phases show a lagging phase about 19degrees for OAM excitation, leading phases about 47degrees for AAM(NCEP/NCAR) and 19degrees for AAM(JMA), relative to the observed excitation, respectively. Analyses of some shorter (9 and 6 yrs.) and longer ( 16 and 39 yrs.) data series indicate that either the excitation energy, or the squared coherence are temporally variable, and their variability are of, in some extent, stochastic property. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000184512900005 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/6977]  |
| 专题 | 国家天文台_应用天文研究部 |
| 作者单位 | 1.Shanghai Jiao Tong Univ, Shanghai Astron Observ, Shanghai 200030, Peoples R China 2.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liao, DC,Liao, XH,Zhou, YH. Contribution of oceanic and atmospheric excitations to the Chandler wobble[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2003,46(4):455-461. |
| APA | Liao, DC,Liao, XH,&Zhou, YH.(2003).Contribution of oceanic and atmospheric excitations to the Chandler wobble.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,46(4),455-461. |
| MLA | Liao, DC,et al."Contribution of oceanic and atmospheric excitations to the Chandler wobble".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 46.4(2003):455-461. |
入库方式： OAI收割
来源：国家天文台
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