| DOI: | 10.1002/grl.50443
|
| 论文题名: | Observations of exosphere variations during geomagnetic storms |
| 作者: | Bailey J.; Gruntman M.
|
| 刊名: | Geophysical Research Letters
|
| ISSN: | 0094-9070
|
| EISSN: | 1944-8801
|
| 出版年: | 2013
|
| 卷: | 40, 期:10 | | 起始页码: | 1907
|
| 结束页码: | 1911
|
| 语种: | 英语
|
| 英文关键词: | exosphere
; geocorona
; hydrogen
; Lyman-alpha
; magnetosphere
|
| Scopus关键词: | Atomic hydrogen
; exosphere
; geocorona
; Geomagnetic storm
; Lyman-alpha
; Measurements of
; Spherical shell
; Wide-angle imaging
; Atoms
; Geomagnetism
; Hydrogen
; Magnetosphere
; Solar power generation
; Storms
; correlation
; geomagnetic storm
; hydrogen
; magnetosphere
; measurement method
; observational method
; quantitative analysis
|
| 英文摘要: | The dominant neutral constituent in Earth's upper exosphere, atomic hydrogen (H), resonantly scatters solar Lyman-alpha (121.567 nm) radiation, observed as the geocorona. We report here observations of an exospheric response to geomagnetic storms obtained using measurements of the geocorona by Lyman-alpha detectors on the Two Wide-angle Imaging Neutral-atom Spectrometers mission. We introduce a new parameter, NH, the number of H atoms in the spherical shell from a geocentric distance of 3 to 8 Earth radii, to quantitatively characterize in a simplified way global exospheric conditions. Five geomagnetic storms observed during three months in the second half of 2011 are accompanied by abrupt temporary increases, spikes, of NH from 6% to 17%, lasting not longer than a day. These increases seem to show some correlation with the minimum Dst index reached during the peak of each storm. © 2013 American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84879908001&doi=10.1002%2fgrl.50443&partnerID=40&md5=753a2a87f006741e3b070928a7fe6d45
|
| Citation statistics: |
|
| 资源类型: | 期刊论文
|
| 标识符: | http://119.78.100.158/handle/2HF3EXSE/6334
|
| Appears in Collections: | 气候减缓与适应
|
|
There are no files associated with this item.
|
|
作者单位: | Department of Astronautical Engineering, Viterbi School of Engineering, University of Southern California, Los Angeles, CA 90089-1192, United States
|
| Recommended Citation: | |
Bailey J.,Gruntman M.. Observations of exosphere variations during geomagnetic storms[J]. Geophysical Research Letters,2013-01-01,40(10).
|
|
|