| DOI: | 10.1002/2015GL064707
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| 论文题名: | Accurately specifying storm-time ULF wave radial diffusion in the radiation belts |
| 作者: | Dimitrakoudis S.; Mann I.R.; Balasis G.; Papadimitriou C.; Anastasiadis A.; Daglis I.A.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-9483
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| EISSN: | 1944-9214
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| 出版年: | 2015
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| 卷: | 42, 期:14 | | 起始页码: | 5711
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| 结束页码: | 5718
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| 语种: | 英语
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| 英文关键词: | radial diffusion
; radiation belts
; ULF waves
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| Scopus关键词: | Radiation belts
; Solar wind
; Specifications
; Storms
; Wave power
; Wind
; High energy tails
; Magnetometer arrays
; Outward diffusion
; Radial diffusion
; Solar wind dynamic pressure
; Statistical representations
; ULF waves
; Ultra low frequencies
; Diffusion
; electron
; ground-based measurement
; parameterization
; radial diffusion
; solar power
; solar wind
; storm
; wave power
; wind velocity
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| 英文摘要: | Ultralow frequency (ULF) waves can contribute to the transport, acceleration, and loss of electrons in the radiation belts through inward and outward diffusion. However, the most appropriate parameters to use to specify the ULF wave diffusion rates are unknown. Empirical representations of diffusion coefficients often use Kp; however, specifications using ULF wave power offer an improved physics-based approach. We use 11 years of ground-based magnetometer array measurements to statistically parameterize the ULF wave power with Kp, solar wind speed, solar wind dynamic pressure, and Dst. We find that Kp is the best single parameter to specify the statistical ULF wave power driving radial diffusion. Significantly, remarkable high energy tails exist in the ULF wave power distributions when expressed as a function of Dst. Two-parameter ULF wave power specifications using Dst as well as Kp provide a better statistical representation of storm-time radial diffusion than any single variable alone. © 2015. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84938987481&doi=10.1002%2f2015GL064707&partnerID=40&md5=7743ff6a96e018ed6800184cf6c85712
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/9098
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| Appears in Collections: | 科学计划与规划
气候变化与战略
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作者单位: | National Observatory of Athens, Institute for Astronomy, Astrophysics, Space Applications and Remote Sensing, Penteli, Greece
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| Recommended Citation: | |
Dimitrakoudis S.,Mann I.R.,Balasis G.,et al. Accurately specifying storm-time ULF wave radial diffusion in the radiation belts[J]. Geophysical Research Letters,2015-01-01,42(14).
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