50-day oscillation of length-of-day change
文献类型：期刊论文
| 作者 | Ma, Lihua1; Han, Yanben1; Liao, Dechun2 |
| 刊名 | EARTH MOON AND PLANETS
 |
| 出版日期 | 2008-10-01 |
| 卷号 | 103期号:1-2页码:1-8 |
| 关键词 | Earth rotation atmospheric angular momentum oceanic angular momentum solar activity |
| 英文摘要 | Variations of Earth's rotation rate (length-of-day, LOD) occur over a wide range of time scales from a few hours to the geological age. Studies showed that the 50-day fluctuation exists in LOD change. In the present paper, the authors use wavelet technique to study the 50-day oscillation in LOD series. Temporal variations of the oscillation are presented in this work. After analyzing the axial component of atmospheric angular momentum (AAM) and oceanic angular momentum (OAM), the 50-day periodic signal is also found in atmospheric and oceanic motion with remarkable time-variation. Meanwhile, the 50-day oscillation of the axial AAM is in good consistence with that of LOD change. This suggests that the 50-day oscillation of LOD change is mainly excited by the axial AAM. Possible origin of the oscillation for Earth system is discussed in the end of this paper. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Astronomy & Astrophysics ; Geosciences, Multidisciplinary |
| 研究领域[WOS] | Astronomy & Astrophysics ; Geology |
| 关键词[WOS] | ATMOSPHERIC ANGULAR-MOMENTUM ; EARTH ROTATION ; WAVELET ANALYSIS ; SOLAR-ACTIVITY ; CLIMATE MODEL ; CORONAL INDEX ; TIME SCALES ; OCEAN ; FLUCTUATIONS ; CIRCULATION |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000258694700001 |
| 源URL | [http://119.78.226.72/handle/331011/19469]  |
| 专题 | 上海天文台_天文地球动力学研究中心 |
| 作者单位 | 1.Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China 2.Chinese Acad Sci, Shanghai Astron Observ, Shanghai 200030, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, Lihua,Han, Yanben,Liao, Dechun. 50-day oscillation of length-of-day change[J]. EARTH MOON AND PLANETS,2008,103(1-2):1-8. |
| APA | Ma, Lihua,Han, Yanben,&Liao, Dechun.(2008).50-day oscillation of length-of-day change.EARTH MOON AND PLANETS,103(1-2),1-8. |
| MLA | Ma, Lihua,et al."50-day oscillation of length-of-day change".EARTH MOON AND PLANETS 103.1-2(2008):1-8. |
入库方式： OAI收割
来源：上海天文台
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