Auroral studies with a chain of meridian scanning photometers. II - Mean distributions of proton and electron aurora as a function of magnetic activity

Details Auroral studies with a chain of meridian scanning photometers. II - Mean distributions of proton and electron aurora as a function of magnetic activity Auroral studies with a chain of meridian scanning photometers. II - Mean distributions of proton and electron aurora as a function of magnetic activity

Dec 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988jgr....9314591c&link_type=abstract

Journal of Geophysical Research (ISSN 0148-0227), vol. 93, Dec. 1, 1988, p. 14591-14601.

Physics

7

Auroral Zones, Night Sky, Particle Precipitation, Photometers, Electron Precipitation, Geomagnetism, H Beta Line, Oxygen Spectra, Ring Currents

Scientific paper

Data obtained during the IMS with a ground-based chain of meridian photometers which measured the H-beta and OI 5577-A emissions have been analyzed quantitatively to yield the mean distributions of proton and electron aurora in geomagnetic latitude and time as functions of magnetic activity. The total energy inputs from electron and proton precipitation around the nightside auroral oval are estimated as functions of AE from the 5577-A and H-beta intensity data. Average latitude profiles for the two emissions are given as a function of AE for the four night time sectors between 1800 and 0600 local magnetic time. It is found that the average energy flux due to protons is an order of magnitude less than that due to electrons under disturbed conditions although under very quiet conditions the two are comparable.

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