Accurately characterizing the importance of wave-particle interactions in radiation belt dynamics: The pitfalls of statistical wave representations

被引：20

作者：

Murphy, Kyle R. ^{[1
]}

Mann, Ian R. ^{[2
]}

Rae, I. Jonathan ^{[3
]}

Sibeck, David G. ^{[1
]}

Watt, Clare E. J. ^{[4
]}

机构：

[1] NASA, Goddard Space Flight Ctr, Greenbelt, MD USA

[2] Univ Alberta, Dept Phys, Edmonton, AB, Canada

[3] Univ Coll London, Mullard Space Sci Lab, Dept Space & Climate Phys, Dorking, Surrey, England

[4] Univ Reading, Dept Meteorol, Reading, Berks, England

来源：

JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS | 2016年 / 121卷 / 08期

关键词：

SOLAR-WIND; DIFFUSION; ELECTRONS; ACCELERATION; MAGNETOPAUSE;

D O I：

10.1002/2016JA022618

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

Wave-particle interactions play a crucial role in energetic particle dynamics in the Earth's radiation belts. However, the relative importance of different wave modes in these dynamics is poorly understood. Typically, this is assessed during geomagnetic storms using statistically averaged empirical wave models as a function of geomagnetic activity in advanced radiation belt simulations. However, statistical averages poorly characterize extreme events such as geomagnetic storms in that storm-time ultralow frequency wave power is typically larger than that derived over a solar cycle and Kp is a poor proxy for storm-time wave power.

引用

收藏

页码：7895 / 7899

页数：5

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