globalchange  > 科学计划与规划
DOI: 10.1002/2015GL067398
论文题名:
On the calculation of electric diffusion coefficient of radiation belt electrons with in situ electric field measurements by THEMIS
作者: Liu W.; Tu W.; Li X.; Sarris T.; Khotyaintsev Y.; Fu H.; Zhang H.; Shi Q.
刊名: Geophysical Research Letters
ISSN: 0094-9377
EISSN: 1944-9108
出版年: 2016
卷: 43, 期:3
起始页码: 1023
结束页码: 1030
语种: 英语
英文关键词: radial diffusion ; radiation belt ; ULF wave
Scopus关键词: Diffusion ; Electric field measurement ; Electric fields ; Electric variables measurement ; Geomagnetism ; Radiation belts ; Wave power ; Empirical expression ; Energy dependence ; Geomagnetic activities ; Outer radiation belt ; Radial diffusion ; Radiation belt electrons ; Statistical distribution ; ULF waves ; Electric power distribution ; electromagnetic wave ; electron ; geoelectric field ; in situ measurement ; mesoscale meteorology ; radial diffusion ; statistical distribution
英文摘要: Based on 7 years' observations from Time History of Events and Macroscale Interactions during Substorms (THEMIS), we investigate the statistical distribution of electric field Pc5 ULF wave power under different geomagnetic activities and calculate the radial diffusion coefficient due to electric field, for outer radiation belt electrons. A simple empirical expression of is also derived. Subsequently, we compare to previous DLL models and find similar Kp dependence with the model, which is also based on in situ electric field measurements. The absolute value of is constantly higher than, probably due to the limited orbital coverage of CRRES. The differences between and the commonly used and models are significant, especially in Kp dependence and energy dependence. Possible reasons for these differences and their implications are discussed. The diffusion coefficient provided in this paper, which also has energy dependence, will be an important contributor to quantify the radial diffusion process of radiation belt electrons. © 2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959423062&doi=10.1002%2f2015GL067398&partnerID=40&md5=9f0ed1a1b91cbb47d211151187dd6347
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10340
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: School of Space and Environment, Beihang University, Beijing, China

Recommended Citation:
Liu W.,Tu W.,Li X.,et al. On the calculation of electric diffusion coefficient of radiation belt electrons with in situ electric field measurements by THEMIS[J]. Geophysical Research Letters,2016-01-01,43(3).
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