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DOI | 10.1002/2017GL072678 |
Effects of sudden commencement on the ionosphere: PFISR observations and global MHD simulation | |
Zou, Shasha1; Ozturk, Dogacan1; Varney, Roger2; Reimer, Ashton2 | |
2017-04-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:7 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Sudden commencement (SC) induced by solar wind pressure enhancement can produce significant global impact on the coupled magnetosphere-ionosphere (MI) system, and its effects have been studied extensively using ground magnetometers and coherent scatter radars. However, very limited observations have been reported about the effects of SC on the ionospheric plasma. Here we report detailed Poker Flat Incoherent Scatter Radar (PFISR) observations of the ionospheric response to SC during the 17 March 2015 storm. PFISR observed lifting of the F region ionosphere, transient field-aligned ion upflow, prompt but short-lived ion temperature increase, subsequent F region density decrease, and persistent electron temperature increase. A global magnetohydrodynamic (MHD) simulation has been carried out to characterize the SC-induced current, convection, and magnetic perturbations. Simulated magnetic perturbations at Poker Flat show a satisfactory agreement with observations. The simulation provides a global context for linking localized PFISR observations to large-scale dynamic processes in the MI system. |
英文关键词 | sudden commencement ion upflow frictional heating incoherent scatter radar magnetohydrodynamic model ground magnetic perturbation |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000400186500010 |
WOS关键词 | TRAVELING CONVECTION VORTICES ; DIFFERENT ASPECT ANGLES ; SOLAR-WIND ; ION UPFLOW ; RADAR OBSERVATIONS ; MAGNETIC-FIELD ; TWIN VORTICES ; POLAR-CAP ; MAGNETOSPHERE ; PLASMA |
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/26394 |
专题 | 气候变化 |
作者单位 | 1.Univ Michigan, Dept Climate & Space Sci & Engn, Ann Arbor, MI 48109 USA; 2.SRI Int, Ctr Geospace Studies, 333 Ravenswood Ave, Menlo Pk, CA 94025 USA |
推荐引用方式 GB/T 7714 | Zou, Shasha,Ozturk, Dogacan,Varney, Roger,et al. Effects of sudden commencement on the ionosphere: PFISR observations and global MHD simulation[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(7). |
APA | Zou, Shasha,Ozturk, Dogacan,Varney, Roger,&Reimer, Ashton.(2017).Effects of sudden commencement on the ionosphere: PFISR observations and global MHD simulation.GEOPHYSICAL RESEARCH LETTERS,44(7). |
MLA | Zou, Shasha,et al."Effects of sudden commencement on the ionosphere: PFISR observations and global MHD simulation".GEOPHYSICAL RESEARCH LETTERS 44.7(2017). |
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