| DOI: | 10.1002/2014GL059294
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| 论文题名: | Lunar-solar interactions in the equatorial electrojet |
| 作者: | Gasperini F.; Forbes J.M.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-10075
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| EISSN: | 1944-9806
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| 出版年: | 2014
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| 卷: | 41, 期:9 | | 起始页码: | 3026
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| 结束页码: | 3031
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| 语种: | 英语
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| 英文关键词: | complexity in the ionosphere-thermosphere system
; equatorial electrojet
; solar-lunar interactions
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| Scopus关键词: | Atmospheric electricity
; E region
; Electric fields
; Electric generators
; Interactive devices
; Ionospheric measurement
; Tidal power
; complexity in the ionosphere-thermosphere system
; Equatorial electrojet
; Lunar tides
; Magnetic signatures
; Nonlinear interactions
; Planetary Waves
; Solar forcing
; Time and frequency domains
; Moon
; electrical method
; electrojet
; height
; ionosphere
; lunar cycle
; nonlinearity
; planetary wave
; thermosphere
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| 英文摘要: | To first order the ground magnetic signature of the equatorial electrojet (EEJ) reflects the height integral of J = σE, where σis a conductivity and E represents some combination of the global dynamo-generated electric field and the electric field due to local winds. Day-to-day variations in the conductivity are strongly controlled by the solar flux, while E depends on solar and lunar tides, planetary waves, and the disturbance dynamo. In this study we demonstrate how complexity is introduced into the EEJ due to the interaction between lunar tide variability in the equatorial electric field and solar-driven variability in the E region conductivity. Toward this end, we analyze magnetometer data from the Huancayo observatory both in the time and frequency domain. We present results for the year 1990, and we show that 86% of the variance in the EEJ is due to the lunar-solar interaction. Key Points Equatorial electrojet (EEJ) responds to both lunar and solar forcing Solar-lunar nonlinear interactions add significantly to EEJ variability Exemplifies a type of complexity occurring in the ionosphere-thermosphere system © 2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84901925691&doi=10.1002%2f2014GL059294&partnerID=40&md5=64d8e463470830b73f790cf44050e7a3
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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/7339
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Department of Aerospace Engineering Sciences, University of Colorado Boulder, Boulder, CO, United States
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| Recommended Citation: | |
Gasperini F.,Forbes J.M.. Lunar-solar interactions in the equatorial electrojet[J]. Geophysical Research Letters,2014-01-01,41(9).
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