GSTDTAP  > 气候变化
DOI10.1029/2021GL097547
A Systematic Look at the Temperature Gradient Contribution to the Dayside Magnetopause Current
J. M. H. Beedle; D. J. Gershman; V. M. Uritsky; T. D. Phan; B. L. Giles
2022-02-10
发表期刊Geophysical Research Letters
出版年2022
英文摘要

Magnetopause diamagnetic currents arise from density and temperature driven pressure gradients across the boundary layer. While theoretically recognized, the temperature contributions to the magnetopause current system have not yet been systematically studied. To bridge this gap, we used a database of Magnetospheric Multiscale (MMS) magnetopause crossings to analyze diamagnetic current densities and their contributions across the dayside and flank magnetopause. Our results indicate that the ion temperature gradient component makes up to 37% of the ion diamagnetic current density along the magnetopause and typically opposes the classical Chapman-Ferraro current direction, interfering destructively with the density gradient component, thus lowering the total diamagnetic current density. This effect is most pronounced on the flank magnetopause. The electron diamagnetic current was found to be 5 to 14 times weaker than the ion diamagnetic current on average.

领域气候变化
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被引频次:2[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/346776
专题气候变化
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J. M. H. Beedle,D. J. Gershman,V. M. Uritsky,et al. A Systematic Look at the Temperature Gradient Contribution to the Dayside Magnetopause Current[J]. Geophysical Research Letters,2022.
APA J. M. H. Beedle,D. J. Gershman,V. M. Uritsky,T. D. Phan,&B. L. Giles.(2022).A Systematic Look at the Temperature Gradient Contribution to the Dayside Magnetopause Current.Geophysical Research Letters.
MLA J. M. H. Beedle,et al."A Systematic Look at the Temperature Gradient Contribution to the Dayside Magnetopause Current".Geophysical Research Letters (2022).
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