The effect of fluctuating ionospheric electric fields on Es-occurrence at cusp and polar cap latitudes
文献类型：期刊论文
| 作者 | Wan, W; Liu, L; Parkinson, ML; Liu, R; He, L; Breed, AM; Dyson, PL; Morris, RJ; Clemesha, B |
| 刊名 | ADVANCES IN REMOTE SENSING OF THE MIDDLE AND UPPER ATMOSPHERE AND THE IONOSPHERE
 |
| 出版日期 | 2001 |
| 卷号 | 27期号:6/7页码:1283-1288 |
| 英文摘要 | Theory predicts that in the high-latitude southern hemisphere, southwest (SW) electric fields will produce convergent ion flow and thereby create thin sporadic E (Es)-layers at node heights > 120 km, whilst northwest (NW) fields will produce downward ion flow and create thicker Es-layers at heights < 110 km. To investigate this theory, Digisonde ionograms (giving the Es-occurrence) and drift measurements (giving electric field estimates) at two Antarctic stations were statistically analyzed. As previously found for the polar cap station Casey (81 degreesS magnetic), more of the Es-traces were associated with SW fields than NW fields. However, new results for the cusp station Zhongshan (73 degreesS) show that fewer Es-layers occur there, and NW fields play a slightly more important role than SW fields, similar to the results found at auroral latitudes in the northern hemisphere. To further our understanding of the occurrence distributions, we study the fluctuating properties of the electric fields at the two stations. It is found that the electric fields at Zhongshan fluctuate more than those at Casey. Thus we suggest that the field fluctuation is also an important consideration helping to explain the differences in the Es-occurrence at the two stations. This suggestion is confirmed by our numerical simulations which show that Es-layers are more effectively formed by steady SW fields than by steady NW fields, and less effectively by fluctuating SW fields than by fluctuating NW fields. (C) 2001 COSPAR. Published by Elsevier Science Ltd. All rights reserved. |
| WOS标题词 | Science & Technology ; Technology ; Physical Sciences |
| 类目[WOS] | Engineering, Aerospace ; Astronomy & Astrophysics ; Geosciences, Multidisciplinary ; Meteorology & Atmospheric Sciences |
| 研究领域[WOS] | Engineering ; Astronomy & Astrophysics ; Geology ; Meteorology & Atmospheric Sciences |
| 关键词[WOS] | THIN IONIZATION LAYERS ; SPORADIC E-LAYERS ; DIRECTION |
| 收录类别 | ISTP ; SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000171630300035 |
| 公开日期 | 2015-12-01 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/8585]  |
| 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.Wuhan Inst Phys & Math, Wuhan Ionospher Observ, Wuhan, Peoples R China 2.La Trobe Univ, Dept Phys, Bundoora, Vic 3083, Australia 3.Polar Res Inst China, Shanghai, Peoples R China 4.Australian Antarctic Div, Kingston, Tas 7050, Australia |
| 推荐引用方式 GB/T 7714 | Wan, W,Liu, L,Parkinson, ML,et al. The effect of fluctuating ionospheric electric fields on Es-occurrence at cusp and polar cap latitudes[J]. ADVANCES IN REMOTE SENSING OF THE MIDDLE AND UPPER ATMOSPHERE AND THE IONOSPHERE,2001,27(6/7):1283-1288. |
| APA | Wan, W.,Liu, L.,Parkinson, ML.,Liu, R.,He, L.,...&Clemesha, B.(2001).The effect of fluctuating ionospheric electric fields on Es-occurrence at cusp and polar cap latitudes.ADVANCES IN REMOTE SENSING OF THE MIDDLE AND UPPER ATMOSPHERE AND THE IONOSPHERE,27(6/7),1283-1288. |
| MLA | Wan, W,et al."The effect of fluctuating ionospheric electric fields on Es-occurrence at cusp and polar cap latitudes".ADVANCES IN REMOTE SENSING OF THE MIDDLE AND UPPER ATMOSPHERE AND THE IONOSPHERE 27.6/7(2001):1283-1288. |
入库方式： OAI收割
来源：武汉物理与数学研究所
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