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Cluster observations of a magnetic field cavity in the plasma sheet

Draper, N. C. and Lester, M. and Cowley, S. W. H. and Bosqued, J. M. and Grocott, A. and Wild, J. A. and Bogdanova, Y. V. and Fazakerley, A. N. (2006) Cluster observations of a magnetic field cavity in the plasma sheet. Advances in Space Research, 38 (8). pp. 1738-1743. ISSN 0273-1177

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    Abstract

    During the recovery phase of a substorm occurring on 1 September 2002 the four Cluster spacecraft crossed from the northern tail lobe into the plasma sheet. While the spacecraft were located in the plasma sheet boundary layer, the magnetic field data from the four spacecraft detected a cavity of close to zero magnetic field. The plasma in this cavity had characteristics similar to that of the central plasma sheet, possibly implying that the central plasma sheet had expanded over and subsequently receded back over the spacecraft. However, the unique four-spacecraft tetrahedral configuration of the Cluster spacecraft shows that this is not a valid scenario as the cavity passed over the four spacecraft, travelling continuously equatorwards and Earthwards. Our analysis is based on data from the Fluxgate Magnetometer, Cluster Ion Spectrometer, Plasma Electron and Current Experiment, and Research with Adaptive Particle Imaging Detectors instruments on board the Cluster spacecraft.

    Item Type: Article
    Journal or Publication Title: Advances in Space Research
    Additional Information: The final, definitive version of this article has been published in the Journal, Advances in Space Research 38 (8), 2006, © ELSEVIER.
    Uncontrolled Keywords: Magnetotail ; Boundary layers ; Space plasmas
    Subjects: UNSPECIFIED
    Departments: Faculty of Science and Technology > Physics
    Faculty of Science and Technology > School of Computing & Communications
    ID Code: 6678
    Deposited By: ep_importer_dcs
    Deposited On: 29 Apr 2008 15:32
    Refereed?: Yes
    Published?: Published
    Last Modified: 09 Oct 2013 16:52
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/6678

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