| 波谱分辨率与Chandler摆动的双频现象 |
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| 引用本文： | 马利华,韩延本.波谱分辨率与Chandler摆动的双频现象[J].自然灾害学报,2006,15(4):10-12. |
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| 作者姓名： | 马利华 韩延本 |
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| 作者单位： | 中国科学院,国家天文台,北京,100012 |
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| 摘 要： | 地极移动中Chandler摆动有时出现的双频现象，一直为许多学者所关注。分析了IERS新近公布的经统一归算的极移数据，结合频谱分析中分辨率的有关问题，进一步讨论了Chandler摆动的双频现象。分析认为，文中采用的极移资料序列的采样间隔及序列长度已满足分辨Chandler摆动双频的要求。所得结果支持Chandler摆动存在双频的观点，同时给出了该极坐标序列存在的约0．3a至50a间的一些周期的参数。
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| 关 键 词： | 波谱分辨率 极移 Chandler摆动 |
| 文章编号： | 1004-4574（2006）04-0010-03 |
| 收稿时间： | 2006-01-18 |
| 修稿时间： | 2006-07-20 |
Spectrum resolution and two-frequency of Chandler wobble |
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| MA Li-hua,HAN Yan-ben.Spectrum resolution and two-frequency of Chandler wobble[J].Journal of Natural Disasters,2006,15(4):10-12. |
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| Authors: | MA Li-hua HAN Yan-ben |
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| Institution: | National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China |
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| Abstract: | Many researchers have been interested in whether Chandler wobble exists two-frequency.In the paper,the authors analyzed polar motion data series recently released by IERS,and in combination with spectrum resolution,discussed two frequency of Chandler wobble.After analyzing,the author thought sampling interval and length of this data series satisfied request for studying two-frequency of Chandler wobble.The result supported the viewpoint that Chandler wobble exists two-frequency,meanwhile this paper presented some polar motion's periods whose values vary from 0.3 year to 50 year. |
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| Keywords: | spectrum resolution polar motion Chandler wobble |
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