globalchange  > 气候减缓与适应
DOI: 10.1029/2017JA023970
Scopus ID: 2-s2.0-85047829204
Title:
Auroral Energy Flux Distribution Over the Nightside Auroral Oval Observed by the DMSP F16/SSUSI: Seasonal, Geomagnetic, and Solar Activity Dependences
Author: Luan X.; Zhou S.; Dou X.
Source Publication: Journal of Geophysical Research: Space Physics
ISSN: 21699380
Publishing Year: 2018
Volume: 123, Issue:5
pages begin: 4457
pages end: 4466
Language: 英语
Keyword: aurora ; Kp dependence ; maximum auroral energy flux ; solar flux dependence
English Abstract: The present work investigates variations in the relative strengths of average premidnight and postmidnight aurorae. The average auroral energy flux data for the southern hemisphere in 2004–2015 are taken from the Special Sensor Ultraviolet Spectrographic Imager onboard the Defense Meteorological Satellite Program F16 satellite. The main findings are as follows: (1) In local winter, the maximum auroral energy flux over the oval is located in the premidnight sector (18:00–00:00 magnetic local time) under geomagnetically quiet condition (Kp = 1) and moves toward the postmidnight sector (00:00–06:00 magnetic local time) as the Kp index increases. (2) In local summer, the maximum energy flux occurs in the postmidnight for higher solar activities (F10.7 > 100 sfu). (3) The premidnight bulge of the auroral energy flux is most prominent under winter, solar minimum and geomagnetically quiet (Kp = 1) conditions. (4) Relatively more auroral energy tends to be deposited in the postmidnight sector than in the premidnight sector as Kp increases. These results show that the auroral energy over the nightside oval is redistributed on average as the season, solar flux, and geomagnetic activity change. This would substantially affect the thermosphere and ionosphere at high latitudes. ©2018. American Geophysical Union. All Rights Reserved.
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被引频次[WOS]:2   [查看WOS记录]     [查看WOS中相关记录]
Document Type: 期刊论文
Identifier: http://119.78.100.158/handle/2HF3EXSE/114042
Appears in Collections:气候减缓与适应

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Affiliation: CAS Key Laboratory of Geospace Environment, School of Earth and Space Sciences, University of Science and Technology of China, Hefei, China; Mengcheng National Geophysical Observatory, University of Science and Technology of China, Hefei, China; Collaborative Innovation Center of Astronautical Science and Technology, Harbin, China

Recommended Citation:
Luan X.,Zhou S.,Dou X.. Auroral Energy Flux Distribution Over the Nightside Auroral Oval Observed by the DMSP F16/SSUSI: Seasonal, Geomagnetic, and Solar Activity Dependences[J]. Journal of Geophysical Research: Space Physics,2018-01-01,123(5)
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