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DOI | 10.1002/2017GL073805 |
High-speed solar wind stream effects on the topside ionosphere over Arecibo: A case study during solar minimum | |
Hajra, Rajkumar1; Tsurutani, Bruce T.2; Brum, Christiano G. M.3; Echer, Ezequiel4 | |
2017-08-16 | |
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:15 |
文章类型 | Article |
语种 | 英语 |
国家 | France; USA; Brazil |
英文摘要 | The impact of a high-speed solar wind stream (HSS) on the topside near-equatorial ionosphere (Arecibo: 28.17 degrees N, L = 1.3) is investigated for the first time. Although the HSS did not lead to any significant geomagnetic storm activity, the ionosphere over Arecibo became hotter and expanded significantly in altitude as compared to a non-HSS interval. The O+/H+ transition height hT increased by similar to 200 km in the daytime and by similar to 100 km at night. At the hT, the peak ionospheric electron and ion temperatures increased by similar to 200-500 K during day and by similar to 50-70 K at night. While the O+ ion concentration exhibited an overall enhancement, deep penetration of the H+ ions below h(T) are observed during the day. The noontime peak electron density was similar to 4 times higher during the HSS event compared to the non-HSS interval. We present three possible mechanisms to explain this topside ionospheric heating. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000408379000006 |
WOS关键词 | ACTIVITY HILDCAA EVENTS ; HIGH-INTENSITY ; LONG-DURATION ; GEOMAGNETIC-ACTIVITY ; TRANSITION HEIGHT ; DMSP SATELLITES ; ION TRANSITION ; CORONAL HOLES ; ALFVEN WAVES ; INTERPLANETARY |
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/26796 |
专题 | 气候变化 |
作者单位 | 1.CNRS, Lab Phys & Chim Environm & Espace, Orleans, France; 2.CALTECH, Jet Prop Lab, Pasadena, CA USA; 3.SRI Int, Arecibo Observ, Space & Atmospher Sci Dept, Arecibo, PR USA; 4.Inst Nacl Pesquisas Espaciais, Sao Jose Dos Campos, Brazil |
推荐引用方式 GB/T 7714 | Hajra, Rajkumar,Tsurutani, Bruce T.,Brum, Christiano G. M.,et al. High-speed solar wind stream effects on the topside ionosphere over Arecibo: A case study during solar minimum[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(15). |
APA | Hajra, Rajkumar,Tsurutani, Bruce T.,Brum, Christiano G. M.,&Echer, Ezequiel.(2017).High-speed solar wind stream effects on the topside ionosphere over Arecibo: A case study during solar minimum.GEOPHYSICAL RESEARCH LETTERS,44(15). |
MLA | Hajra, Rajkumar,et al."High-speed solar wind stream effects on the topside ionosphere over Arecibo: A case study during solar minimum".GEOPHYSICAL RESEARCH LETTERS 44.15(2017). |
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