The Frequency, Intensity and Local Time Distribution of Auroras

结合DMSP海量降水数据库 粒子和我们多年的经验， 涉及自动识别算法的统计研究 表明了一条卓有成效的研究路线 我们建议 确定电子加速的每个实例， 7年粒子数据中的单能电子峰值。 我们 估计由此产生的目录将包括大约 500，000次电子加速事件;大约3个数量级 比以前研究的最大的电子 加速事件。 我们还将记录所有电子 或离子扩散极光超过一定的阈值（大约0.25 尔格/厘米2秒）。 这项研究将迅速回答一些长期存在的问题， 1400个电子"热点"的存在等争议 加速度;和存在一个"午前间隙"的离散 奥罗拉 电子加速的巨大规模甚至目录 将有可能通过行星际磁场进行细分 Bz和By条件，以及磁活动指数，如 Kp和AE。 也就是说，所提议的研究的结果将是 电子加速统计分布图 整个高纬度地区的事件，在所有当地时间和 各种装箱条件。 强烈的弥漫极光将是 类似的研究;将特别注意的情况 离子能量通量超过电子的能量通量（真离子 极光）。 最后，整个50万电子目录 加速事件将与一般电离层共享 社区 方便地访问整个极光列表 DMSP卫星在任何特定日期遇到的 1983年12月和1990年12月也将提供。 这种访问 将部分通过扩展现有的自动 磁层源识别响应系统 降水区域。

The combination of the enormous DMSP data base of precipitating particles and our several years experience in conducting statistical studies involving automated identification algorithms suggests a highly fruitful line of research. We propose to identify every instance of electron acceleration as evidenced by monoenergetic electron peaks in 7 years of particle data. We estimate that the resulting catalog will consist of approximately 500,000 electron acceleration events; approximately 3 orders of magnitude more than the largest previous study of electron acceleration events. We will also record all instances of electron or ion diffuse aurora above a certain threshold (probably 0.25 ergs/cm2s). The research will promptly answer some long standing disputes such as the existence of a 1400 "hot spot" of electron acceleration; and the existence of a "prenoon gap" in the discrete aurora. The huge size of the electron acceleration even catalog will make it possible to subdivide by interplanetary magnetic field Bz and By conditions, as well as indices of magnetic activity, such as Kp and AE. That is, a result of the proposed research will be maps of the statistical distribution of electron acceleration events throughout the high latitude regions, at all local times and a variety of binning conditions. Intense diffuse auroras will be similarly studied; particular attention will be paid to instances of ion energy fluxes exceeding that of electrons (true ion auroras). Finally, the entire catalog of 500,000 electron acceleration events will be shared with the general ionospheric community. convenient access to the entire list of auroras encountered by DMSP satellites on any specified day between December 1983 and December 1990 will also be provided. Such access will be accomplished in part by extending the existing automatic response system of identifications of the magnetospheric source regions of precipitation.