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The changing topology of the duskside low-latitude boundary layer in relation to IMF orientation

Lund, E. and Farrugia, C. J. and Sandholt, P. E. and Kistler, L. M. and Fairfield, D. H. and Gratton, F. T. and Cowley, S. W. H. and Wild, J. A. and Mouikis, C. G. and Dunlop, M. W. and Rème, H. and Carlson, C. W. (2006) The changing topology of the duskside low-latitude boundary layer in relation to IMF orientation. Advances in Space Research, 37 (3). pp. 497-500. ISSN 0273-1177

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    Abstract

    On 7 December 2000, Cluster made an extended outbound radial traversal of the duskside magnetopause boundary layer. The long duration of the crossing, during which Cluster spent several hours within 2RE of the nominal magnetopause, allows us to deconvolve the structure of this boundary layer in its dependence on interplanetary parameters. We present evidence that as the interplanetary magnetic field (IMF) changed in discontinuous jumps from southward to northward, the magnetic topology of the boundary layer evolved from open to closed. Reconnection signatures, including enhanced flows observed locally at Cluster and ion energy dispersion signatures observed by FAST near ClusterÕs magnetic footpoint, appeared while the IMF was southward. When the IMF turned nearly due northward, Cluster observed 75-s (Pc 4) oscillations which we attribute to the Kelvin–Helmholtz instability.

    Item Type: Article
    Journal or Publication Title: Advances in Space Research
    Uncontrolled Keywords: Cluster ; reconnection DCS-publications-id ; art-751 ; DCS-publications-credits ; iono ; DCS-publications-personnel-id ; 104
    Subjects: UNSPECIFIED
    Departments: Faculty of Science and Technology > School of Computing & Communications
    Faculty of Science and Technology > Physics
    ID Code: 6688
    Deposited By: ep_importer_dcs
    Deposited On: 29 Apr 2008 15:28
    Refereed?: Yes
    Published?: Published
    Last Modified: 26 Jul 2012 18:17
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/6688

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