| DOI: | 10.1002/grl.50905
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| 论文题名: | Scale dependence and frontal formation of nighttime medium-scale traveling ionospheric disturbances |
| 作者: | Yokoyama T.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-8596
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| EISSN: | 1944-8327
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| 出版年: | 2013
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| 卷: | 40, 期:17 | | 起始页码: | 4515
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| 结束页码: | 4519
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| 语种: | 英语
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| 英文关键词: | E-F coupling
; MIECO
; MSTID
; Perkins instability
; sporadic-E layer
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| Scopus关键词: | Initial perturbation
; Medium-scale traveling ionospheric disturbance
; Mid-latitude ionosphere
; MIECO
; MSTID
; Perkins instability
; sporadic-E layer
; Very long wavelength
; Atmospheric electricity
; E region
; F region
; Ionospheric electromagnetic wave propagation
; Scintillation
; Wavefronts
; Ionospheric measurement
; coupling
; E region
; electrodynamics
; perturbation
; polarization
; wavelength
|
| 英文摘要: | Scale dependence of nighttime medium-scale traveling ionospheric disturbances (MSTIDs) is studied with the midlatitude ionosphere electrodynamics coupling model by changing initial perturbation scales. It is shown that both sporadic E (Es) layer and Perkins instabilities have the scale dependence that a shorter wavelength mode tends to stop growing within a shorter period, whereas a very long wavelength mode grows so slowly in the E region that it does not effectively seed the Perkins instability in the F region. As a result, the typical wavelength of MSTIDs (100-200 km) can be spontaneously generated without scale-dependent forcing. It is also shown that long frontal structures of MSTIDs can be formed by the Pedersen polarization process along the wavefront of MSTIDs by which the wavefront is forced to be uniformly distributed. Key Points Scale dependence and frontal formation of MSTIDs are reproduced A mechanism of the formation of frontal structure of MSTIDs is proposed Scale dependence and frontal formation are consistent with observations ©2013. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883581159&doi=10.1002%2fgrl.50905&partnerID=40&md5=fd06362ce3fd21115c7ade0d3bce3933
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/5860
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| Appears in Collections: | 气候减缓与适应
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作者单位: | National Institute of Information and Communications Technology, 4-2-1 Nukui-Kitamachi, Koganei, Tokyo 184-8795, Japan
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| Recommended Citation: | |
Yokoyama T.. Scale dependence and frontal formation of nighttime medium-scale traveling ionospheric disturbances[J]. Geophysical Research Letters,2013-01-01,40(17).
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