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- Roland T. Tsunoda
- Center for Geospace Studies SRI International Menlo Park California USA
書誌事項
- 公開日
- 2010-05
- 権利情報
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- http://onlinelibrary.wiley.com/termsAndConditions#vor
- DOI
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- 10.1029/2010gl043422
- 公開者
- American Geophysical Union (AGU)
この論文をさがす
説明
<jats:p>A direct link appears to exist between gravity wave (GW) activity in the troposphere and plasma structure in the nighttime equatorial <jats:italic>F</jats:italic> layer during the solstices. This finding strongly favors a role being played by a neutral‐ion coupling process, which involves (1) a spatially‐varying dynamo current, generated in situ by a GW, and (2) perturbation transfer to the plasma by a polarization electric field. We show, for the first time, how two more of the puzzling features in observed plasma structure, referred to as equatorial spread <jats:italic>F</jats:italic> (ESF), can finally be explained, if we allow GWs to have circular, instead of plane, phase fronts. These features include (1) early appearance of large‐scale wave structure (LSWS) when the <jats:italic>F</jats:italic> layer is low, and (2) common appearances of a monochromatic LSWS with a long zonal wavelength.</jats:p>
収録刊行物
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- Geophysical Research Letters
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Geophysical Research Letters 37 (10), L10104-, 2010-05
American Geophysical Union (AGU)