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Detailed Reference Information |
Weber, E.J., Buchau, J., Eather, R.H. and Mende, S.B. (1978). North-south aligned equatorial airglow depletions. Journal of Geophysical Research 83: doi: 10.1029/JA083iA02p00712. issn: 0148-0227. |
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A new instrument for all-sky spectrophotometric imaging of aurora and airglow has been installed in the Air Force Geophysics Laboratory's Airborne Ionospheric Observatory. Initial observations of equatorial and near-equatorial 6300-¿ O I airglow show the existence of north-south aligned regions of airglow depletion. These dark bands often extend more than 1200 km in the north-south direction and 50--200 km in the east-west direction. They are observed to drift toward the east during the evening-midnight hours, with one observation of westward drift after local midnight. Airglow fine structure associated with the boundaries of the dark bands has been observed down to the 2.5-km resolution limit of the instrument. Simultaneous airborne ionospheric soundings indicate that these regions of airglow depletion are characterized by an increase in the virtual height of the F layer. A simple model of field-aligned electron density depletion in the bottomside of the F layer explains both the airglow observations and the ionospheric soundings. |
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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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