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空间科学学报 2010
Auroralelectrojeteventassociatedwithmagnetosphericsubstorms, PP. 349-355 Keywords: Auroralelectrojetevent,GeomagneticindexAE,Geomagneticsubstorm Abstract: Theauroralelectrojetindexisanimportantindexinmonitoringandpredictingsubstorms.Asubstormsusuallyincludesauroralbreakup,auroralelectrojeteventmarkedbyAEincrease,energeticparticleinjectionatgeosynchronousorbit,mid-lowlatitudePi2,etc.Howeverthequestionwhetheranauroralelectrojeteventcorrespondstoasubstormremainsunanswered.Usingtheauroralelectrojetindexin2004,weanalyzedfiveauroralelectrojeteventsandstudiedtheirrelationwithsubstorms.Theresultsshowthattherearethreekindsofauroralelectrojetevents:(1)simultaneousrapidincreaseofwestwardauroralelectrojetandeastwardauroralelectrojet;(2)rapidincreaseofwestwardauroralelectrojetandalmostunchangeableeastwardauroralelectrojet;(3)rapidincreaseofeastwardauroralelectrojetandalmostunchangeablewestwardauroralelectrojet.Mostofauroralelectrojeteventscorrespondtosubstorms.Howeverafewauroralelectrojeteventsarenotaccompaniedbysubstorms.Thissituationmostoftenoccursfortheauroralelectrojeteventinwhicheastwardauroralelectrojetdominates.
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