AN ATTEMPT TO DERIVE ELECTRON-ENERGY SPECTRA FOR AURORAL DAYTIME PRECIPITATION EVENTS

被引：8
作者：
MOEN, J
BREKKE, A
HALL, C
机构：
[1] The Auroral Observatory, University of Tromsø, N-9001 Tromsø
来源：
JOURNAL OF ATMOSPHERIC AND TERRESTRIAL PHYSICS | 1990年 / 52卷 / 6-8期
关键词：
D O I：
10.1016/0021-9169(90)90045-O
中图分类号：
P4 [大气科学（气象学）];
学科分类号：
0706 ; 070601 ;
摘要：
A set of quiet daytime electron density profiles is established on the basis of EISCAT measurements. This set is used as a background correction in the CARD program [Brekke A., Hall C. and Hansen T.L. (1989) Ann. Geophysicae 7, 269] in order to derive the energy spectra of precipitating electrons at daytime. For disturbed daytime events on 25-26 June 1985, we find that the particle precipitation typically consists of small fluxes (105 el/cm2 sster keV) of high energetic particles (20-30 keV). The Hall: Pedersen conductance ratios for such events are found to be meaningless as an indicator of the energy of the particles, in contrast to nighttime precipitation. © 1990.
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页码：459 / 471
页数：13
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