空间科学学报2012，Vol.32Issue(2)：182-190,9.
磁暴期间环电流离子中性原子成像的模拟与观测比较研究
Energetic Neutral Atom Imaging of the Earth Ring Current During Magnetic Storms Comparison Between Simulation Results and Observation
摘要
Abstract
Based on an analytical ion model for the ring current, in conjunction with the Cham- berlain exosphere density model, Energetic Neutral Atom （ENA） images were calculated for the magnetic storm occurred in November 2004. It was shown that the simulated ENA images differ from images recorded by the Energetic Neutral Atom Detector Unit （NUADU） instrument aboard TC-2 of Double Star mission in terms of azimuth/magnetic Local Time （MLT） distribution, alti- tude/latitude distribution and energy spectral distribution. If the determiner of asymmetry of the ring current and azimuth of flux maximum can be selected according to evolvement of storms, and more emphasis be placed on density of low altitude exosphere or neutral atoms other than H be taken into account, the ion model is hopeful to produce more precise ring current ion distributions and ENA images. In addition, the ion spectrum at the injection region is expected to be revised and change of ratio of different ion species should be taken into account in order to get better simulation results.关键词
环电流/中性原子成像/磁暴/环电流模拟/地冕中性层Key words
Ring current/ENA imaging/Magnetic storm/Ring current simulation/Exosphere分类
天文与地球科学引用本文复制引用
陈志青,沈超,路立,S.McKenna-Lawlor,刘振兴,燕广庆..磁暴期间环电流离子中性原子成像的模拟与观测比较研究[J].空间科学学报,2012,32(2):182-190,9.基金项目
国家自然科学基金项目 （）
国家重点基础研究发展计划 （）
国家重点实验室专项研究经费共同资助 （）
