Solar activity variations of equivalent winds derived from global ionosonde data
文献类型：期刊论文
| 作者 | Liu, LB; Luan, XL; Wan, WX; Lei, JH; Ning, BQ |
| 刊名 | JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
 |
| 出版日期 | 2004-12-15 |
| 卷号 | 109期号:A12 |
| 关键词 | ionosphere climatology solar activity variation |
| ISSN号 | 0148-0227 |
| DOI | 10.1029/2004JA010574 |
| 文献子类 | Article |
| 英文摘要 | The equivalent winds at the F layer peak are derived from global ionosonde data to investigate their solar activity variations. With increasing solar activity, the derived equivalent winds are found of nonlinearly decreased diurnal amplitudes in all seasons at most stations. This implies that the increase in ion drag more than compensates for pressure gradients and thus restrains the diurnal amplitude at high solar activity. The diurnal phase of the derived equivalent winds generally shifts later at higher solar activity. It is the first time to explicitly report this striking feature that emerged at so many stations. Another pronounced feature is that the diurnal phase has a summer-winter difference. The diurnal phases at most stations in the Northern Hemisphere are later in winter than in summer at higher solar activity. Furthermore, a decrease in the semidiurnal amplitudes of equivalent winds with increasing solar activity is evident in winter over most stations considered and in other seasons at stations with a lower dip, but the decrease trend becomes weak in other seasons at stations with a larger dip. However, complicated dependences on solar activity can be found in the diurnal mean and the semidiurnal phases of equivalent winds at stations considered. |
| WOS关键词 | LATITUDE THERMOSPHERIC WINDS ; MERIDIONAL WINDS ; MILLSTONE HILL ; NEUTRAL WINDS ; SEASONAL BEHAVIOR ; CYCLE VARIATIONS ; IONOSPHERIC DATA ; CLIMATOLOGY ; MIDLATITUDES ; EQUATORIAL |
| WOS研究方向 | Astronomy & Astrophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000225883700001 |
| 出版者 | AMER GEOPHYSICAL UNION |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/79641]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Liu, LB |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 2.Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan 430071, Peoples R China 3.Chinese Acad Sci, Grad Sch, Beijing, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, LB,Luan, XL,Wan, WX,et al. Solar activity variations of equivalent winds derived from global ionosonde data[J]. JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,2004,109(A12). |
| APA | Liu, LB,Luan, XL,Wan, WX,Lei, JH,&Ning, BQ.(2004).Solar activity variations of equivalent winds derived from global ionosonde data.JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS,109(A12). |
| MLA | Liu, LB,et al."Solar activity variations of equivalent winds derived from global ionosonde data".JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS 109.A12(2004). |
入库方式： OAI收割
来源：地质与地球物理研究所
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