Atmospheric quasi-14 month fluctuation and excitation of the Chandler wobble

被引：0
作者：
Yuichi Aoyama
Isao Naito
Tetsuya Iwabuchi
Nobuo Yamazaki
机构：
[1] Kyoto University,Radio Science Center for Space and Atmosphere
[2] Graduate University for Advanced Studies,National Astronomical Observatory
[3] Meteorological Research Institute,undefined
[4] University Coorperation for Atmospheric Research,undefined
来源：
Earth, Planets and Space | 2003年 / 55卷
关键词：
ECMWF wind; quasi-14-month fluctuation; atmospheric excitation; Chandler wobble;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
A quasi-14 month fluctuation in the atmospheric excitation function for the Earth’s wobble is discussed by using the re-analysis data of the European Center for Medium-range Weather Forecast for the 14 years between 1980 and 1993. The spectrum of the atmospheric wind excitation function shows a striking peak near the 14-month period. As a result, the atmospheric (wind plus pressure) excitation function shows exactly the same power as that of the geodetic excitation function inferred from the observed wobble at the Chandler wobble frequency (about 14 months), suggesting that the atmosphere excited the Chandler wobble between 1980 and 1993. The wind fluctuation comes mostly from the tropospheric wind.
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页码：e25 / e28
相关论文
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