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GEOPHYSICAL RESEARCH LETTERS,
VOL. 29, NO. 24,
2220,
doi:10.1029/2002GL015350,
2002
Nearly simultaneous images of HF-pump enhanced airglow at 6300 Å and 5577 Å
B. Gustavsson
National Institute of Polar Research,
Tokyo,
Japan
B. U. E. Brändström
Kiruna Division,
Swedish Institute of Space Physics,
Sweden
Å. Steen
Remspace,
Linköping,
Sweden
T. Sergienko
Kiruna Division,
Swedish Institute of Space Physics,
Sweden
T. B. Leyser
Uppsala Division,
Swedish Institute of Space Physics,
Sweden
M. T. Rietveld
Max-Planck Institut für Aeronomie,
Germany
T. Aso
National Institute of Polar Research,
Tokyo,
Japan
M. Ejiri
National Institute of Polar Research,
Tokyo,
Japan
Abstract
This report presents nearly simultaneous images of HF-pump enhanced airglow at 6300 Å and 5577 Å caused by HF radio wave pumping
in the ionosphere from the EISCAT-Heating facility. The images show co-located enhancements implying that there are O(1D) and O(1S) emissions from the ionospheric F region. The maximum enhancement in 6300 Å is 50–60 Rayleighs and the maximum enhancement
in 5577 Å is 10–20 Rayleighs for five different HF-pump pulses. The 5577 to 6300 Å intensity ratio of 0.3–0.4 implies that
the excitation is caused by a nonthermal electron population.
Published 28
December
2002.
Index Terms: 0305 Atmospheric Composition and Structure: Aerosols and particles (0345, 4801); 2403 Ionosphere: Active experiments; 6929 Radio Science: Ionospheric physics (2409); 2451 Ionosphere: Particle acceleration; 2427 Ionosphere: Ionosphere/atmosphere interactions (0335).
Read Full Article (file size: 293644 bytes) Cited by
Citation: Gustavsson, B., B. U. E. Brändström, Å. Steen, T. Sergienko, T. B. Leyser, M. T. Rietveld, T. Aso, and M. Ejiri
(2002),
Nearly simultaneous images of HF-pump enhanced airglow at 6300 Å and 5577 Å,
Geophys. Res. Lett.,
29(24),
2220,
doi:10.1029/2002GL015350.
Copyright 2002 by the American Geophysical Union.
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