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Magnetic field of the transition current system: dawn-dusk asymmetry

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dc.contributorVirginia Techen
dc.contributor.authorBelenkaya, E. S.en
dc.contributor.authorAlexeev, I. I.en
dc.contributor.authorClauer, C. Roberten
dc.contributor.departmentElectrical and Computer Engineeringen
dc.date.accessed2014-06-09en
dc.date.accessioned2014-06-09T19:08:55Zen
dc.date.available2014-06-09T19:08:55Zen
dc.date.issued2007en
dc.description.abstractIn this paper we consider the interactions of coronal mass ejections (CMEs) with the Earth's magnetosphere for the specific case in which there is a sharp increase in the dynamic pressure (interplanetary shock) that is associated with a simultaneous northward turning of the interplanetary magnetic field (IMF) from the near horizontal direction. Previously, we have shown that under such circumstances, the so-called transition current systems arise. These temporary high-latitude current systems create a low-latitude asymmetric magnetic field on the ground with a large northward field enhancement on the nightside and little or no field increase near local noon. Here we investigate the dawn-dusk asymmetry of the low-latitude on-ground magnetic field of the transition current system caused by the IMF. Analysis of the Region I current circuit for northward IMF shows a change in its shape controlled by different IMF components. Due to this geometrical effect, the maximum and minimum magnetic field disturbances appear to be shifted. The obtained results supplement and define more precisely the locations of the magnetic disturbance extrema retrieved recently by Clauer et al. (2001). The results of this study are compared with the available observations. A good accordance is demonstrated.en
dc.description.sponsorshipNSF OPP-0220735en
dc.description.sponsorshipNASA grant NAG5-12176en
dc.description.sponsorshipINTAS Grant No 03-51-3922en
dc.description.sponsorshipRFBR Grants 05-05-64435, 07-05-00529en
dc.format.mimetypeapplication/pdfen
dc.identifier.citationBelenkaya, E. S., Alexeev, I. I., and C. R. Clauer Jr.: Magnetic field of the transition current system: dawn-dusk asymmetry, Ann. Geophys., 25, 1899-1911, doi:10.5194/angeo-25-1899-2007, 2007.en
dc.identifier.doihttps://doi.org/10.5194/angeo-25-1899-2007en
dc.identifier.issn0992-7689en
dc.identifier.urihttp://hdl.handle.net/10919/48606en
dc.identifier.urlhttp://www.ann-geophys.net/25/1899/2007/angeo-25-1899-2007.htmlen
dc.language.isoenen
dc.publisherCopernicus Publicationsen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectMagnetospheric physicsen
dc.subjectCurrent systemsen
dc.subjectMagnetosphere-ionosphereen
dc.subjectInteractionsen
dc.subjectMagnetospheric configuration and dynamicsen
dc.subjectConvection patternsen
dc.subjectNorthward IMFen
dc.subjectInterplanetaryen
dc.subjectMagnetosphereen
dc.subjectReconnectionen
dc.subjectSimulationen
dc.subjectStormen
dc.subjectAstronomy & astrophysicsen
dc.subjectGeosciences, multidisciplinaryen
dc.subjectMeteorologyen
dc.subjectAtmospheric sciencesen
dc.titleMagnetic field of the transition current system: dawn-dusk asymmetryen
dc.title.serialAnnales Geophysicaeen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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