Unusually long lasting multiple penetration of interplanetary electric field to equatorial ionosphere under oscillating IMF Bz

During November 11–16, 2003, the interplanetary magnetic field (IMF) Bz oscillated between northward and southward directions, which suggests discontinuous magnetic reconnection associated with the multiple pulses‐like reconnection electric field. The Jicamarca incoherent scatter radar (ISR) measure...

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Veröffentlicht in:	Geophysical research letters 2008-01, Vol.35 (2), p.n/a
Hauptverfasser:	Wei, Yong, Hong, Minghua, Wan, Weixing, Du, Aimin, Lei, Jiuhou, Zhao, Biqiang, Wang, Wenbin, Ren, Zhipeng, Yue, Xinan
Format:	Artikel
Sprache:	eng
Schlagworte:	Earth sciences Earth, ocean, space electric field penetration Exact sciences and technology multiple penetration solar wind-magnetosphere-ionosphere coupling
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Zusammenfassung:	During November 11–16, 2003, the interplanetary magnetic field (IMF) Bz oscillated between northward and southward directions, which suggests discontinuous magnetic reconnection associated with the multiple pulses‐like reconnection electric field. The Jicamarca incoherent scatter radar (ISR) measurements of ionospheric zonal electric field showed similar fluctuations during this period. The high correlation coefficient of 0.71 between the reconnection electric field and equatorial zonal electric field during 125 hours suggests that the interplanetary electric field (IEF) pulsively penetrated into the equatorial ionosphere due to the discontinuous magnetic reconnection. It is implied that the short lifetime (
ISSN:	0094-8276 1944-8007
DOI:	10.1029/2007GL032305