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营口台极低频观测数据初步分析
营口台极低频观测数据初步分析
Abstract：
ThispaperpresentsapreliminaryanalysisofthepolarlowfrequencyobservationdatafromYingkouStation.Thedatawereobtainedfrom2015to2019,coveringthreeobservationalperiodsofthepolarlowfrequency.Thecharacteristicsofthedatawereanalyzed,includingthedistributionofdata,therelationshipbetweenlatitudeandmagnetometerdata,theinfluenceofseasonalchangesonthedataandtheeffectofsolaractivityonthedata.Theresultsshowedthatthedataweremainlydistributedinanarrowrangeoflatitudes,andthemagnetometerdatainthehigh-latituderegionweresignificantlyhigherthaninthelow-latituderegion.Inaddition,withthechangeofseasons,theamplitudeofmagnetometerdatashowedanobviouschange.Finally,theeffectofsolaractivityondatawasdiscussed,indicatingthatthedatashowedaclearperiodicitywiththesolaractivitycycle.
Keywords:YingkouStation,polarlowfrequency,dataanalysis
1.Introduction
ThepolarlowfrequencyobservationisanimportantmeansofstudyingtheEarth'smagneticfieldandspaceenvironment.YingkouStation,locatedinthehigh-latituderegionofChina,hasconductedcontinuousobservationsofpolarlowfrequencydatasinceitsestablishment.ThispaperisbasedonthedataobtainedfromYingkouStationfrom2015to2019,whichcoversthreeobservationalperiodsofpolarlowfrequency.Thispapermainlyanalyzesthecharacteristicsofthedata,includingthedistributionofdata,therelationshipbetweenlatitudeandmagnetometerdata,andtheinfluenceofseasonalchangesandsolaractivityonthedata.
2.DataCharacteristics
ThedataobtainedfromYingkouStationfrom2015to2019mainlyincludedmagnetometerdataandelectricfielddata.Thedatashowedaclearperiodicvariationandtimecontinuity.Themagnetometerdatacoveredawiderangeoflatitudes,mainlyconcentratedinthehigh-latituderegion.ThedistributionofdataisshowninFigure1.
[InsertFigure1here]
Themagnetometerdatainthehigh-latituderegionweresignificantlyhigherthaninthelow-latituderegion.Thisphenomenonwasmainlyduetothefactthatthehigh-latituderegionwasclosertothepolarregion,andthemagneticfieldlinesweremoreverticaltotheground,resultinginalargermagneticf