Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2017GL073249 |
Global ULF waves generated by a hot flow anomaly | |
Zhao, L. L.1; Zhang, H.2; Zong, Q. G.1 | |
2017-06-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; USA |
英文摘要 | Hot flow anomalies (HFAs), which are frequently observed near Earth's bow shock, are phenomena resulting from the interaction between interplanetary discontinuities and Earth's bow shock. Such transient phenomena upstream the bow shock can cause significant deformation of the bow shock and the magnetosphere, generating traveling convection vortices, field-aligned currents, and ULF waves in the Earth's magnetosphere. A large HFA (4.9R(E)) was observed by Cluster on 27 April 2008. Nearly monochromatic Pc 3 ULF waves generated by the HFA were observed by multiple spacecrafts and ground stations. The ULF waves show characteristics of standing Alfven waves. The wave power of the poloidal mode of the generated ULF waves is stronger than that of the toroidal mode. Polarization rotation from the poloidal mode to the toroidal mode is also observed. The Pc 3 ULF waves generated by the HFA were observed at dawn, noon, dusk sectors, and nightside, indicating that the Pc 3 ULF wave response of the magnetosphere to the HFA is global. Our results show that the impact of HFAs to the magnetosphere is much stronger than what we thought before. |
英文关键词 | hot flow anomaly ULF waves discontinuity bow shock |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000404382600005 |
WOS关键词 | EARTHS BOW SHOCK ; SOLAR-WIND ; DIAMAGNETIC CAVITIES ; OSCILLATIONS ; EVOLUTION |
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/28441 |
专题 | 气候变化 |
作者单位 | 1.Peking Univ, Inst Space Phys & Appl Technol, Beijing, Peoples R China; 2.Univ Alaska Fairbanks, Inst Geophys, Fairbanks, AK 99775 USA |
推荐引用方式 GB/T 7714 | Zhao, L. L.,Zhang, H.,Zong, Q. G.. Global ULF waves generated by a hot flow anomaly[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(11). |
APA | Zhao, L. L.,Zhang, H.,&Zong, Q. G..(2017).Global ULF waves generated by a hot flow anomaly.GEOPHYSICAL RESEARCH LETTERS,44(11). |
MLA | Zhao, L. L.,et al."Global ULF waves generated by a hot flow anomaly".GEOPHYSICAL RESEARCH LETTERS 44.11(2017). |
条目包含的文件 | 条目无相关文件。 |
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