Atmospheric excitation of time variable length-of-day on seasonal scales
文献类型：期刊论文
| 作者 | Ma, LH ; Han, YB
|
| 刊名 | CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS
 |
| 出版日期 | 2006 |
| 卷号 | 6期号:1页码:120-124 |
| 关键词 | Earth rotation seasonal variation wavelet transform |
| 英文摘要 | We use the method of wavelet transform to analyze the time series of the Earth's rotation rate of the EOP (IERS) C04. The result shows that the seasonal (annual and semiannual) variation of the length-of-day (LOD) has temporal variability in its period length and amplitude. During 1965.0-2001.0, the periods of the semiannual and annual components varied mainly from 175-day to 190-day and from 360-day to 3 70-day, respectively; while their amplitudes varied by more than 0.2 ms and 0.1 ms, respectively. Analyzing the axial component of atmospheric angular momentum (AAM) during this period, we have found that time-variations of period lengths and amplitudes also exist in the seasonal oscillations of the axial AAM and are in good consistency with those of the seasonal LOD change. The time variation of the axial AAM can explain largely the change of the LOD on seasonal scales. |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000235501700013 |
| 源URL | [http://ir.bao.ac.cn/handle/114a11/8329]  |
| 专题 | 国家天文台_应用天文研究部 |
| 作者单位 | Chinese Acad Sci, Natl Astron Observ, Beijing 100012, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma, LH,Han, YB. Atmospheric excitation of time variable length-of-day on seasonal scales[J]. CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,2006,6(1):120-124. |
| APA | Ma, LH,&Han, YB.(2006).Atmospheric excitation of time variable length-of-day on seasonal scales.CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS,6(1),120-124. |
| MLA | Ma, LH,et al."Atmospheric excitation of time variable length-of-day on seasonal scales".CHINESE JOURNAL OF ASTRONOMY AND ASTROPHYSICS 6.1(2006):120-124. |
入库方式： OAI收割
来源：国家天文台
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