A three-dimensional ray-tracing study of R-X mode waves during high geomagnetic activity

被引：8

作者：

Xiao, Fu-Liang ^{[1
]}

Chen, Lun-Jin ^{[2
]}

Zheng, Hui-Nan ^{[2
]}

Wang, Shui ^{[2
]}

Guo, Jun ^{[3
]}

机构：

[1] School of Physics and Electronic Sciences, Changsha University of Science and Technology

[2] Key Laboratory for Basic Plasma Physics of Chinese Academy of Sciences, School of Earth and Space Sciences, University of Science and Technology of China

[3] School of Mathematics and Physics, Qingdao University of Science and Technology

来源：

Chinese Physics Letters | 2008年 / 25卷 / 01期

关键词：

Geomagnetism - Radiation belts;

D O I：

10.1088/0256-307X/25/1/091

中图分类号：

学科分类号：

摘要：

We further present a three-dimensional (3D) ray-tracing study on the propagation characteristic of the superluminous R-X mode waves during high geomagnetic activity following our recent two-dimensional results [J. Geophys. Res. 112 (2007) A10214]. We perform numerical calculations for this mode which originates at specific altitude r = 2.0RE in the source cavity along a 70° night geomagnetic field line. We demonstrate that the ray path of the R-X mode is essentially governed by the azimuthal angle of the wave vector k. Ray paths starting with azimuthal angle 180° (or in the meridian plane) can reach the lowest latitude, but stay at relatively higher latitudes with the azimuthal angles other than 180° (or off the meridian plane). The results further supports the previous finding that the R-X mode may be physically present in the radiation belts under appropriate conditions. © 2008 Chinese Physical Society and IOP Publishing Ltd.

引用

页码：340 / 343

页数：3

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