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High-latitude artificial aurora using the EISCAT high-gain HF facility

Kosch, M. J. and Rietveld, M. T. and Kavanagh, A. J. and Jussila, J. and Isham, B. and Kaila, K. and McCrea, I. W. and Senior, A. and Holma, H. and Honary, F. and Hagfors, T. (2002) High-latitude artificial aurora using the EISCAT high-gain HF facility. In: 29th General Assembly of the International Union of Radio Science, 1900-01-01.

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    Abstract

    The EISCAT high-frequency (HF) transmitter facility at Ramfjord, Norway, has been used to accelerate F-region electrons sufficiently to excite the oxygen atoms and nitrogen molecules, resulting in optical emissions at 630, 557.7 and 427.8 nm. During O-mode transmissions at 5.423 MHz, using 630 MW effective radiated power, in the hours after sunset on 12 November 2001 several new observations were made, including: (1) The first high-latitude observation of an HF induced optical emission at 427.8 nm and (2) Optical rings being formed at HF on followed by their collapse into a central blob. Both discoveries remain unexplained with current theories.

    Item Type: Conference or Workshop Item (Other)
    Journal or Publication Title: 29th General Assembly of the International Union of Radio Science
    Additional Information: P1321
    Uncontrolled Keywords: asc ; heating DCS-publications-id ; inproc-265 ; DCS-publications-credits ; dasi ; iono-fa ; scasi ; DCS-publications-personnel-id ; 7 ; 9 ; 51 ; 5 ; 56
    Subjects: UNSPECIFIED
    Departments: Faculty of Science and Technology > School of Computing & Communications
    Faculty of Science and Technology > Physics
    Faculty of Science and Technology > Engineering
    ID Code: 6734
    Deposited By: ep_importer_dcs
    Deposited On: 16 Jun 2008 17:25
    Refereed?: No
    Published?: Published
    Last Modified: 09 Apr 2014 20:53
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/6734

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