Pulsed brightening of proton auroras before the active substorm phase

Details Pulsed brightening of proton auroras before the active substorm phase Pulsed brightening of proton auroras before the active substorm phase

Feb 1988

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1988ge%26ae..28...87f&link_type=abstract

Geomagnetizm i Aeronomiia (ISSN 0016-7940), vol. 28, Jan.-Feb. 1988, p. 87-91. In Russian.

Physics

2

Auroras, Polar Substorms, Protons, Brightness, Emission Spectra, H Alpha Line, Ring Currents, Spectral Bands, Time Response

Scientific paper

The behavior of auroral protons at the end of the preparatory phase of a substorm and at the commencement of the active phase is examined on the basis of SAMBO-79 and SAMBO-82 data as well as data obtained during 1982-1983. These data were used to analyze the preparatory phases and breakups and to elucidate variations of H-alpha emission. It is shown that an H-alpha brightening usually occurs not more than 7 min before the commencement of the breakup. This prebreakup brightening is due to the intensification of the precipitation of ring-current protons.

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