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dc.contributor.authorNishimura, Y.en_US
dc.contributor.authorKikuchi, T.en_US
dc.contributor.authorWygant, J.en_US
dc.contributor.authorShinbori, A.en_US
dc.contributor.authorOno, T.en_US
dc.contributor.authorMatsuoka, A.en_US
dc.contributor.authorNagatsuma, T.en_US
dc.contributor.authorBrautigam, D.en_US
dc.date.accessioned2018-07-25T14:16:04Z
dc.date.available2018-07-25T14:16:04Z
dc.date.issued2009
dc.identifier.citationNishimura, Y., T. Kikuchi, J. Wygant, A. Shinbori, T. Ono, A. Matsuoka, T. Nagatsuma, and D. Brautigam (2009), Response of convection electric fields in the magnetosphere to IMF orientation change, J. Geophys. Res., 114, A09206, doi:10.1029/2009JA014277.
dc.identifier.urihttps://hdl.handle.net/2144/30042
dc.description.abstract[1] The transient response of convection electric fields in the inner magnetosphere to southward turning of the interplanetary magnetic field (IMF) is investigated using in‐situ electric field observations by the CRRES and Akebono spacecraft. Electric fields earthward of the inner edge of the electron plasma sheet show quick responses simultaneously with change in ionospheric electric fields, which indicates the arrival of the first signal related to southward turning. A coordinated observation of the electric field by the CRRES and Akebono spacecraft separated by 5 RE reveals a simultaneous increase in the dawn‐dusk electric field in a wide region of the inner magnetosphere. A quick response associated with the southward turning of the IMF is also identified in in‐situ magnetic fields. It indicates that the southward turning of the IMF initiates simultaneous (less than 1 min) enhancements of ionospheric electric fields, convection electric fields in the inner magnetosphere, and the ring or tail current and region 2 FACs. In contrast, a quick response of convection electric fields is not identified in the electron plasma sheet. A statistical study using 161 events of IMF orientation change in 1991 confirms a prompt response within 5 min for 80% of events earthward of the electron plasma sheet, while a large time lag of more than 30 min is identified in electric fields in the electron plasma sheet. The remarkable difference in the response of electric fields indicates that electric fields in the electron plasma sheet are weakened by high conductance in the magnetically conjugated auroral ionosphere.en_US
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2009JA014277
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2009JA014277
dc.relation.ispartofJournal of Geophysical Research: Space Physics
dc.rightsCopyright 2009 by the American Geophysical Union. Further reproduction or electronic distribution is not permitted.en_US
dc.subjectInterplanetary magnetic fielden_US
dc.subjectMagnetosphereen_US
dc.titleResponse of convection electric fields in the magnetosphere to IMF orientation changeen_US
dc.typeArticleen_US
dc.description.versionPublished versionen_US
dc.identifier.doi10.1029/2009JA014277
pubs.elements-sourcemanual-entryen_US
pubs.notesEmbargo: No embargoen_US
pubs.noteshttps://publications.agu.org/author-resource-center/usage-permissions/ Scroll down to Repository policies: "AGU allows authors to deposit their journal articles if the version is the final published citable version of record, the AGU copyright statement is clearly visible on the posting, and the posting is made 6 months after official publication by the AGU." Reviewed by E. Phillips 5/8/18.en_US
pubs.organisational-groupBoston Universityen_US
pubs.organisational-groupBoston University, College of Engineeringen_US
pubs.organisational-groupBoston University, College of Engineering, Department of Electrical & Computer Engineeringen_US


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