%0 Journal Article
%T DeterminationoftheKelvin-HelmholtzWaveParametersontheMagnetopauseinSingle-spacecraftObservations
%A LIN
%A Dong
%A WANG
%A Chi
%A LI
%A Wenya
%A TANG
%A Binbin
%J 空间科学学报
%P 403-408
%D 2015
%R 10.11728/cjss2014.04.403
%X Kelvin-Helmholtz(K-H)wavesareformedfromthetriggeringoftheK-Hinstabilityonthemagnetopause,whichisacandidatemechanismforsolarwindentryintothemagnetosphere,especiallyundernorthwardinterplanetarymagneticfieldconditions.Inthisstudy,aK-HwaveeventwasidentifiedfromtheobservationofprobeBoftheTimeHistoryofEventsandMacroscaleInteractionsduringSubstorms(THEMIS)missionon15May2008.AnewmethodtodeterminethewaveparametersoftheK-Hwavesinsingle-spacecraftobservationsisproposed.Thedominantwaveperiodisdeterminedbythreekindsofspectrogramsforthreekeyparameters,namelytheiondensity,theiontemperature,andthezcomponentofmagneticfield.Thephasevelocityisestimatedbycalculatingthecenter-of-massvelocityofthedetectedK-Hvortexregion.Thisapproximationisvalidatedbycomparisonwithotheralternativemethods.ThemethodtodeterminethewaveparametersisafirststeptofurtherstudyK-Hwavepropertiesandtheirrelationshipwithinterplanetaryconditions.
%K Kelvin-Helmholtzwaves
%K Magnetopause
%K Single-spacecraftobservation
%U http://www.cjss.ac.cn/CN/abstract/abstract2145.shtml