Terdiurnal tides in the MLT region over Cachoeira Paulista (22.7ºS; 45ºW)
Terdiurnal tides in the MLT region over Cachoeira Paulista (22.7ºS; 45ºW)
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DOI：
10.1590/s0102-261x2007000600009
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
A. S. Tokumoto;P. Batista;B. Clemesha
中科院分区：
文献类型：
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作者：
A. S. Tokumoto;P. Batista;B. Clemesha
利用位于Cachoeira Paulista(22.7 oS，45.0oW)的SkiYmet流星雷达所获得的五年风速测量结果来研究日潮。这种类型的潮汐经常在流星区被观察到，但其产生的机制尚未完全解释。其中可能的原因是太阳直接强迫以及全日潮和半日潮之间的非线性相互作用。日潮和半日潮之间的非线性相互作用可以产生两个次要波：一次全日潮和一次全日潮。日潮的起源和季节分布可能表明存在次生日潮，这是初级日潮变化的一个原因。在这项工作中，我们分析了风的数据，以寻找这些机制的证据。
Five years of winds measurements obtained by a SkiYmet meteor radar at Cachoeira Paulista (22.7oS, 45.0oW) are used to investigate the terdiurnal tide. This type of tide is frequently observed in the meteor region but the mechanisms responsible for its production are not yet completely explained. Among the possible causes are solar direct forcing and nonlinear interactions between the diurnal and semidiurnal tides. Nonlinear interaction between diurnal and semidiurnal tides can generate two secondary waves: a diurnal tide and a terdiurnal tide. The origin and seasonal distribution of the terdiurnal tide may indicate the presence of a secondary diurnal tide as a cause of variability in the primary diurnal tide. In this work we analyze the winds data in search of evidence for these mechanisms.