Electromagnetic energy conversion at dipolarization fronts: Multispacecraft results

被引：110

作者：

Huang, S. Y. ^{[1
]}

Fu, H. S. ^{[2
]}

Yuan, Z. G. ^{[1
]}

Zhou, M. ^{[3
]}

Fu, S. ^{[1
]}

Deng, X. H. ^{[1
,3
]}

Sun, W. J. ^{[4
]}

Pang, Y. ^{[3
]}

Wang, D. D. ^{[1
]}

Li, H. M. ^{[1
,5
]}

Yu, X. D. ^{[1
]}

机构：

[1] Wuhan Univ, Sch Elect & Informat, Wuhan 430072, Peoples R China

[2] Beihang Univ, Sch Astronaut, Space Sci Inst, Beijing 100191, Peoples R China

[3] Nanchang Univ, Inst Space Sci & Technol, Nanchang, Peoples R China

[4] Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China

[5] Xidian Univ, Sch Phys & Optoelect Engn, Xian, Peoples R China

来源：

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS | 2015年 / 120卷 / 06期

基金：

中国国家自然科学基金; 高等学校博士学科点专项科研基金; 中国博士后科学基金;

关键词：

dipolarization front; energy conversion; load region; wave activity; PLASMA SHEET; CLUSTER; WAVES; RECONNECTION; TURBULENCE; FLOWS;

D O I：

10.1002/2015JA021083

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Dipolarization fronts (DFs) are believed to play important roles in transferring plasmas, magnetic fluxes, and energies in the magnetotail. Using the Cluster observations in 2003, electromagnetic energy conversion at the DFs is investigated by case and statistical studies. The case study indicates strongest energy conversion at the DF. The statistical study shows the similar features that the energy of the fields can be significantly transferred to the plasmas (load, JE>0) at the DFs. These results are consistent with some recent simulations. Examining the electromagnetic fluctuations at the DFs, we suggest that the wave activities around the lower hybrid frequency may play an important role in the energy dissipation.

引用

页码：4496 / 4502

页数：7

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