A statistical study of the interplanetary magnetic field control of sporadic E-layer occurrence in the southern polar cap ionosphere
文献类型：期刊论文
| 作者 | Wan, WX; Parkinson, ML; Dyson, PL; Breed, AM; Morris, RJ |
| 刊名 | JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS
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| 出版日期 | 1999-12-01 |
| 卷号 | 61期号:18页码:1357-1366 |
| 英文摘要 | The influence of the interplanetary magnetic field (IMF) on the occurrence of sporadic E (Es)-layers in the southern polar cap ionosphere has been investigated. We statistically analysed ionogram and Doppler velocity observations made using a HF digital ionosonde located at Casey, Antarctica (66.3 degrees S, 110.5 degrees E; 81 degrees S magnetic latitude) during the two summer campaign intervals I January to 18 February, and 1 November to 31 December 1997. The ionogram and Doppler Velocity measurements were used to determine the Es-occurrence and electric field vectors (assuming E x B/B-2 drift), respectively. Concurrent IMF data were obtained from measurements made on board the Wind spacecraft. First, the gross properties of the IMF dependence of Es-formation were obtained: the occurrence rate was higher for negative B-y and/or positive B-z, and lower for positive B-y and/or negative B-z. To reconcile these gross properties with the electric field theory of Es-layer formation, the detailed diurnal variation of both Es-occurrence and the ionospheric electric field were obtained for different orientations of the IMF. The main statistical results are that: (1) the B-y component mainly controls the occurrence of the midnight Es-layers through its influence on the corresponding South West electric field; and (2) the B-z component mainly controls the occurrence of the evening Es-layers. However, the change in the occurrence rate for evening Es-layers was not related to the strength of the associated North West and North East electric fields. The total occurrence of Es-layers depended more on B-y than on B-z, owing to the dominance of B-y-controlled midnight Es-layers in the occurrence distribution. Nevertheless, the dependence of Es-occurrence on B-z was important. We suggest that the increase in Es-occurrence for positive B-z might be explained by the intermittent production of lower F-region ionisation by polar showers and squalls, which also increase in frequency and intensity for positive B-z. The importance of metallic ion transport within the ionosphere is also considered. (C) 2000 Elsevier Science Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Geochemistry & Geophysics ; Meteorology & Atmospheric Sciences |
| 研究领域[WOS] | Geochemistry & Geophysics ; Meteorology & Atmospheric Sciences |
| 关键词[WOS] | THIN IONIZATION LAYERS ; ELECTRIC-FIELD ; HIGH-LATITUDES ; ION LAYERS ; CONVECTION ; DIRECTION ; PRECIPITATION ; PATTERNS ; RADAR ; IMF |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000085541000004 |
| 公开日期 | 2015-12-01 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/8425]  |
| 专题 | 武汉物理与数学研究所_2011年以前论文发表（包括2011年） |
| 作者单位 | 1.La Trobe Univ, Dept Phys, Melbourne, Vic 3083, Australia 2.Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan Ionospher Observ, Wuhan 430071, Peoples R China 3.Australian Antarctic Div, Kingston, Tas 7050, Australia |
| 推荐引用方式 GB/T 7714 | Wan, WX,Parkinson, ML,Dyson, PL,et al. A statistical study of the interplanetary magnetic field control of sporadic E-layer occurrence in the southern polar cap ionosphere[J]. JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS,1999,61(18):1357-1366. |
| APA | Wan, WX,Parkinson, ML,Dyson, PL,Breed, AM,&Morris, RJ.(1999).A statistical study of the interplanetary magnetic field control of sporadic E-layer occurrence in the southern polar cap ionosphere.JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS,61(18),1357-1366. |
| MLA | Wan, WX,et al."A statistical study of the interplanetary magnetic field control of sporadic E-layer occurrence in the southern polar cap ionosphere".JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS 61.18(1999):1357-1366. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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