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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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|
|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|
|Departments:||Faculty of Science and Technology > School of Computing & Communications|
Faculty of Science and Technology > Physics
Faculty of Science and Technology > Engineering
|Deposited On:||16 Jun 2008 17:25|
|Last Modified:||04 Nov 2015 07:26|
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