Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL094932 |
Energy flux densities at dipolarization fronts | |
C. M. Liu; H. S Fu; Y. Q. Yu; H. Y. Lu; W. L. Liu; Y. Xu; B. L. Giles; J. L. Burch | |
2021-07-30 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Dipolarization fronts (DFs) have been suggested as crucial energy conversion sites contributing significantly to global energy transfer in the magnetosphere. However, energy partitioning of DF-driven energy transfer remains hitherto elusive. Using high-cadence data from MMS spacecraft, we present a detailed investigation of energy flux densities at two DFs with/without surface ripples. We find that during both DF intervals, electron enthalpy flux increases dramatically, carries the greatest energy, and well correlates with local energy conversion. Poynting flux also increases but contributes to a relatively smaller portion. Ion enthalpy flux which in magnitude is slightly smaller than electron enthalpy flux barely changes. Particle kinetic energy and heat fluxes are negligible. Strong difference in energy fluxes observed by different spacecraft is found at the rippled DF, indicating three-dimensional energy transport. These results indicate that energy budgets at the DFs are dominated by electron physics, rather than ion dynamics suggested by previous studies. |
领域 | 气候变化 |
URL | 查看原文 |
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/335312 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | C. M. Liu,H. S Fu,Y. Q. Yu,et al. Energy flux densities at dipolarization fronts[J]. Geophysical Research Letters,2021. |
APA | C. M. Liu.,H. S Fu.,Y. Q. Yu.,H. Y. Lu.,W. L. Liu.,...&J. L. Burch.(2021).Energy flux densities at dipolarization fronts.Geophysical Research Letters. |
MLA | C. M. Liu,et al."Energy flux densities at dipolarization fronts".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
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