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Detailed Reference Information |
DeMajistre, R., Brandt, P.C., Immel, T.J., Yee, J.-H., Dalgarno, A., Paxton, L.J. and Kharchenko, V. (2005). Storm-time enhancement of mid-latitude ultraviolet emissions due to energetic neutral atom precipitation. Geophysical Research Letters 32: doi: 10.1029/2005GL023059. issn: 0094-8276. |
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In this work we present a direct connection between Energetic Neutral Atom (ENA) precipitation and enhanced ultraviolet emissions from the mid-latitude thermosphere during times of geomagnetic disturbance. Data from the IMAGE/HENA instrument provides information about ENA emission from the ring current, the IMAGE/FUV instrument shows the temporal response of the ultraviolet airglow, and data from TIMED/GUVI is used to infer the vertical distribution of the airglow enhancement. We find that the airglow signature is well correlated with energetic atom precipitation. The ultraviolet emission has a maximum above 120 km tangent altitude and is dominated by OI 135.6 nm emission. The relative brightness of 135.6 nm emission and OI 130.4 nm radiance suggest a lack of an electron cascade. |
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Abstract |
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Keywords
Atmospheric Composition and Structure, Thermosphere, composition and chemistry, Atmospheric Composition and Structure, Thermosphere, energy deposition, Ionosphere, Particle precipitation, Atmospheric Processes, Thermospheric dynamics, Space Plasma Physics, Neutral particles |
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Publisher
American Geophysical Union 2000 Florida Avenue N.W. Washington, D.C. 20009-1277 USA 1-202-462-6900 1-202-328-0566 service@agu.org |
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