| 项目编号: | 1456161
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| 项目名称: | CEDAR: Multi-spectral Imaging Investigation of the Auroral Fine Structures Associated with Naturally Enhanced Ion Acoustic Lines |
| 作者: | Robert Michell
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| 承担单位: | University of Maryland College Park
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| 批准年: | 2013
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| 开始日期: | 2014-08-01
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| 结束日期: | 2016-01-31
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| 资助金额: | USD87440
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| 资助来源: | US-NSF
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| 项目类别: | Continuing grant
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| 国家: | US
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| 语种: | 英语
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| 特色学科分类: | Geosciences - Atmospheric and Geospace Sciences
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| 英文关键词: | magnetosphere-ionosphere system
; ion acoustic lines
; neial generation mechanism
; large-amplitude ion acoustic wave
; common-volume observation
; remote operation mode
; international collaborator
; nighttime auroral ionosphere
; coincident auroral fine structure
; imaging multiple auroral emission line
; spatial distribution
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| 英文摘要: | This project is a synergistic study of radar and optical measurements for investigating and characterizing the occurrence of Naturally Enhanced Ion Acoustic Lines (NEIALs) with coincident auroral fine structures. While it is known that NEIALs are a manifestation of large-amplitude ion acoustic waves and potentially Langmuir waves and/or large current densities, their influence and feedback on the electromagnetic and particle energy transfer within the magnetosphere-ionosphere system is not well understood. The project will make use of common-volume observations of the nighttime auroral ionosphere with ground-based Electron Multiplying Charged Couple Device (EMCCD) imagers and the Poker Flat Incoherent Scatter Radar (PFISR) to gain an improved understanding of NEIAL generation mechanisms. A suite of six narrowfield imagers will be used, each equipped with a different narrow bandpass filter, imaging multiple auroral emission lines simultaneously in order to derive the spatial distribution of the precipitating electron energy. The observations will take place during moon down periods, in both campaign and remote operation modes. The theory and modeling components will be investigated in partnership with an international collaborator. |
| 资源类型: | 项目
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/96078
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| Appears in Collections: | 影响、适应和脆弱性
气候减缓与适应
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| Recommended Citation: | |
Robert Michell. CEDAR: Multi-spectral Imaging Investigation of the Auroral Fine Structures Associated with Naturally Enhanced Ion Acoustic Lines. 2013-01-01.
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