DOI: 10.1002/2014GL060953
论文题名: Geomagnetic control of equatorial plasma bubble activity modeled by the TIEGCM with Kp
作者: Carter B.A. ; Retterer J.M. ; Yizengaw E. ; Groves K. ; Caton R. ; McNamara L. ; Bridgwood C. ; Francis M. ; Terkildsen M. ; Norman R. ; Zhang K.
刊名: Geophysical Research Letters
ISSN: 0094-9865
EISSN: 1944-9596
出版年: 2014
卷: 41, 期: 15 起始页码: 5331
结束页码: 5339
语种: 英语
英文关键词: equatorial ionosphere
; plasma bubbles
; TIEGCM
Scopus关键词: Ionosphere
; Ionospheric measurement
; Scintillation
; Day-to-day variability
; Equatorial ionosphere
; Equatorial plasma bubble
; General circulation model
; Plasma bubble
; Prereversal enhancement
; Thermosphere-ionosphere
; TIE-GCM
; Favorable conditions
; Geomagnetic activities
; Instability growth
; Geomagnetism
; general circulation model
; geomagnetic field
; growth rate
; linear programing
; plasma
英文摘要: Describing the day-to-day variability of Equatorial Plasma Bubble (EPB) occurrence remains a significant challenge. In this study we use the Thermosphere-Ionosphere Electrodynamics General Circulation Model (TIEGCM), driven by solar (F10.7) and geomagnetic (Kp) activity indices, to study daily variations of the linear Rayleigh-Taylor (R-T) instability growth rate in relation to the measured scintillation strength at five longitudinally distributed stations. For locations characterized by generally favorable conditions for EPB growth (i.e., within the scintillation season for that location), we find that the TIEGCM is capable of identifying days when EPB development, determined from the calculated R-T growth rate, is suppressed as a result of geomagnetic activity. Both observed and modeled upward plasma drifts indicate that the prereversal enhancement scales linearly with Kp from several hours prior, from which it is concluded that even small Kp changes cause significant variations in daily EPB growth. Key Points Daily EPB occurrence analyzed from five longitudinally spaced ground stations TIEGCM can identify days of decreased EPB growth during peak EPB periods PRE strength is affected by Kp from hours prior, causing daily EPB variability © 2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84905329553&doi=10.1002%2f2014GL060953&partnerID=40&md5=2124d9b7e8038e9f4b5c514594e09925
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7129
Appears in Collections: 气候减缓与适应
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作者单位: Institute for Scientific Research, Boston College, Newton, MA, United States
Recommended Citation:
Carter B.A.,Retterer J.M.,Yizengaw E.,et al. Geomagnetic control of equatorial plasma bubble activity modeled by the TIEGCM with Kp[J]. Geophysical Research Letters,2014-01-01,41(15).