Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL084327 |
Time-Dependent Response of the Terrestrial Exosphere to a Geomagnetic Storm | |
Cucho-Padin, Gonzalo; Waldrop, Lara | |
2019-11-06 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | USA |
英文摘要 | Recent observations of significant enhancements in exospheric hydrogen (H) emission in response to geomagnetic storms have been difficult to interpret in terms of the evolution of the underlying global, 3-D exospheric structure. In this letter, we report the first measurement of the timescales and spatial gradients associated with the exospheric response to a geomagnetic storm, which we derive from a novel, time-dependent tomographic analysis of H emission data. We find that global H density at 3 R-E begins to rise promptly, by similar to 15%, after storm onset and that this perturbation appears to propagate outward with an effective speed of similar to 60 m/s, a response that may be associated with enhanced thermospheric temperature and vertical neutral wind. This effective upwelling has significant implications for atmospheric escape as well as for charge exchange reaction rates, which drive important space weather effects such as plasmaspheric refilling and ring current decay. |
英文关键词 | neutral exosphere geomagnetic storm thermal upwelling inner magnetosphere |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000494619400001 |
WOS关键词 | HYDROGEN DENSITY DISTRIBUTIONS ; RECONSTRUCTION ; TOMOGRAPHY ; GEOCORONA |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/188262 |
专题 | 气候变化 |
作者单位 | Univ Illinois, Dept Elect & Comp Engn, Urbana, IL 61801 USA |
推荐引用方式 GB/T 7714 | Cucho-Padin, Gonzalo,Waldrop, Lara. Time-Dependent Response of the Terrestrial Exosphere to a Geomagnetic Storm[J]. GEOPHYSICAL RESEARCH LETTERS,2019. |
APA | Cucho-Padin, Gonzalo,&Waldrop, Lara.(2019).Time-Dependent Response of the Terrestrial Exosphere to a Geomagnetic Storm.GEOPHYSICAL RESEARCH LETTERS. |
MLA | Cucho-Padin, Gonzalo,et al."Time-Dependent Response of the Terrestrial Exosphere to a Geomagnetic Storm".GEOPHYSICAL RESEARCH LETTERS (2019). |
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