Observation and analysis of NI 520.0 nm auroral emissions

摘要: Abstract The results from the analysis of simultaneous auroral ground-based optical measurements N( 2 D) 520.0 nm, N + 1NG 470.9 O( 3 P) 844.6 nm and 1 630.0 emission intensities are presented. data were obtained during observations at Gillam (56.35°N, 265.32°E) over an observation period about 8 hours, UT 2:33 hrs to 10:06 hrs, on 20 March 1985. soft electron flux board DMSP satellite for time experiment have also been considered in analysis. density integral rate I(520.0) calculated employing a one- two-dimensional time-dependent ion-chemistry model predictions compared with experimental rates. It was found that NI intensity based energy fluxes inferred I(844.6)/I(427.8) ratios smaller magnitude than values by factor 5–8 after allowing horizontal transport [N( D)] neutral winds. Assuming precipitation, suggested OI I(630.0) data, provided good agreement between results. Based it concluded played minor role observed emissions mostly produced precipitating energies below 100 eV.