Determination of the Location and Size of Whistler-Electron Correlated Energetic Electron and Whistler Data
惠斯勒电子相关高能电子和惠斯勒数据的位置和大小的确定
基本信息
- 批准号:9513241
- 负责人:
- 金额:$ 7.99万
- 依托单位:
- 依托单位国家:美国
- 项目类别:Continuing Grant
- 财政年份:1995
- 资助国家:美国
- 起止时间:1995-08-15 至 1997-07-31
- 项目状态:已结题
- 来源:
- 关键词:
项目摘要
The proposed effort during 1995-1996 is to 1) study the locations and size distribution of magnetospheric ducts, 2) greatly improve current estimates of loss rates of radiation belt electrons due to VLF waves from lightning, chorus, and other coherent waves, 3) clarify the relative roles of ducted and non-ducted whistler mode waves in the diffusion and precipitation of radiation belt particles, and 4) study the mechanisms responsible for high latitude precipitation bursts. This study will be based on precipitating electron records acquired in 1982 by the SEEP (Stimulated Emission of Energetic Particles) satellite and by VLF wave receivers on the ground and on satellites. Electron precipitation by ducted whistlers and by other VLF waves is thought to be the major loss mechanism for radiation belt electrons. However, the relative importance of ducted whistlers, unducted whistlers, chorus, and hiss is controversial. The SEEP satellite with its low altitude orbit, large geometric factor detectors, and high data collection rates has acquired an unique data set which can be used to address these issues. In addition, VLF wave data from ground stations and satellites were obtained during the time interval SEEP was operating and will be used to associate wave characteristics with the particle precipitation. This work will improve knowledge of magnetospheric duct dimensions, will provide quantitative information on the fine structure of lightning-induced electron precipitation and on the number of electrons precipited by ducted whistlers, should give information on the precipitation rates caused by non-ducted whistlers and other VLF emissions. Analysis of the high resolution electron data should also constrain the possible mechanisms responsible of the high latitude electron precipitation bursts.
1995-1996年期间的计划工作是:1)研究磁层管道的位置和大小分布; 2)大大改进目前对由闪电、合唱和其他相干波产生的VLF波引起的辐射带电子损失率的估计; 3)澄清管道和非管道哨声模波在辐射带粒子扩散和沉淀中的相对作用;(4)研究高纬降水爆发的机制。 这项研究将以SEEP(高能粒子受激发射)卫星和地面及卫星上的甚低频波接收器1982年获得的降水电子记录为基础。 管道哨声和其他VLF波的电子沉淀被认为是辐射带电子的主要损失机制。 然而,管道哨声、非管道哨声、合唱和嘶嘶声的相对重要性是有争议的。 SEEP卫星具有低空轨道、大几何因子探测器和高数据收集率,获得了可用于解决这些问题的独特数据集。 此外,在SEEP运行期间,还从地面站和卫星获得了甚低频波数据,这些数据将用于将波的特征与粒子降水联系起来。 这项工作将增进对磁层管道尺寸的了解,将提供关于闪电引起的电子沉淀的精细结构和管道哨声沉淀的电子数量的定量信息,还应提供关于非管道哨声和其他甚低频发射造成的沉淀率的信息。 对高分辨率电子资料的分析也应该限制高纬度电子降水爆发的可能机制。
项目成果
期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)
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Henry Voss其他文献
Henry Voss的其他文献
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