NSSC OpenIR  > 空间科学部
Alternative TitleCluster observations of the dusk-side magnet0sheath during the storm main phase on 20 Novem ber 2003
汤朝灵; 李中元; 路立; 北京8701信箱
Source Publication地球物理学进展
Keyword磁鞘 太阳风 高能离子 地磁暴
Other AbstractWe present cluster observations of the dusk side magnet0sheath(MSH)during the storm main phase on 20 November 2003,which was associated with the passage of a large magnetic cloud past the Earth.During the interval,the B of the magnetic field in the magnetosheath was observed to be about-60 nT,which is basically consistent with that observed by ACE.And,ion flow velocity in the magnetosheath has a strong dependence on the magnetosheath magnetic field orientation.The IMF electric field Ey in the magnetosheath is--50 mV/m.These extreme fields and flows in the magnetosheath drove the largest geomagnetic storm to date in the solar cycle 2 3 with a Dst minimum of-472 nT.The ion number density in the magnetosheath is lower than the magnetospheric in our study,which is caused by the lower ion number density in solar wind when a large magnetic cloud past the Earth.The number densities of H.He'and He with an energy of 1-10 keV in the magnetosheath are dependent on the density of solar wind in the magnetosheath.The magnetopause is strongly compressed for the extremely large southward magnetic field.The abundant energetic oxygen ions with an energy of 1-10keV cross the magnetopause into the magnetosheath,because of their finite gyroradius(::>1000 km),provided the MSH convection and magnetic field orientation are taken accordingly into consideration.This is the indication of the magnetospheric response to the extreme IMF condition.These may be important for us to better understand the large geomagnetic storm.
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Cited Times:2[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
汤朝灵,李中元,路立,等. 2003年11月20日磁暴主相期间磁鞘的观测研究[J]. 地球物理学进展,2009,24(3):842-847.
APA 汤朝灵,李中元,路立,&北京8701信箱.(2009).2003年11月20日磁暴主相期间磁鞘的观测研究.地球物理学进展,24(3),842-847.
MLA 汤朝灵,et al."2003年11月20日磁暴主相期间磁鞘的观测研究".地球物理学进展 24.3(2009):842-847.
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