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《A study of the shape of topside electron density profile上侧电子密度分布形状的研究 非相干散射雷达测量 阿雷西沃和Millstone Hill》由会员上传分享，免费在线阅读，更多相关内容在行业资料-天天文库。
1、RADIOSCIENCE,VOL.41,RS4006,doi:10.1029/2005RS003367,2006AstudyoftheshapeoftopsideelectrondensityprofilederivedfromincoherentscatterradarmeasurementsoverAreciboandMillstoneHill1,2111,34XiaoliLuan,LiboLiu,WeixingWan,JiuhouLei,Shun-RongZhang,45JohnM.Holt,andMich
2、aelP.SulzerReceived5November2005;revised1March2006;accepted3April2006;published19July2006.[1]Theshapeofthetopsideelectrondensity(Ne)profileisstudiedusingincoherentscatterradar(ISR)measurements.Onthebasisofmorethan90,000and84,000NeprofilesmeasuredoverArecibo(1
3、8.4°N,66.7°W,dip49.7°)andMillstoneHill(42.6°N,71.5°W,dip71.6°),respectively,shapefactorshavebeenderivedbyfittingtheISRobservedprofileusingaChapman-typelayerwithaheight-independentscaleheight.Theresultsrevealthattheshapefactorshowsageneraldeparturefromthetypic
4、allyusedvaluesof0.5(Chapmanalayer)exceptduringthenightandalsoundergoesappreciablevariationwithlocaltime,season,solaractivity,andlatitude.OverArecibo,theaveragedshapefactorischaracterizedbyadaytimemaximumof0.55–0.75,anearlyconstantnighttimevaluecloseto0.5,and
5、amarkedmorningdecline;overMillstoneHill,theshapefactorshowspronouncedseasonalvariations,andthediurnalvariationinsummerisoppositetothatinotherseasons.Overbothstations,theshapefactorexhibitsahighcorrelationwiththeF2layerpeakelectrondensity(NmF2),andithasstrongs
6、olarcycledependenceduringthelatemorninghours.Itindicatesthatthetemperaturestructureofthetopsideionospherecanexplainmuchofthevariationoftheshapefactorwhentheplasmadensityislow,especiallyduringnighttime.Duringdaytimehours,thetopsideshapefactoristhoughttobeassoc
7、iatedwithion-neutraldragduringperiodsoflargeplasmadensity.Citation:Luan,X.,L.Liu,W.Wan,J.Lei,S.-R.Zhang,J.M.Holt,andM.P.Sulzer(2006),AstudyoftheshapeoftopsideelectrondensityprofilederivedfromincoherentscatterradarmeasurementsoverAreciboandMillstoneHill,RadioS
8、ci.,41,RS4006,doi:10.1029/2005RS003367.1.Introductionelectrondensity(NmF2).Itiswellknownthatourknowl-edgeofthetopsideionospheresuffersfromthelackof[2]Anumberofrecentstudies[Ezqueretal.,19
