Propagation of whistler mode waves with a modulated frequency in the magnetosphere

A. V. Streltsov; M. Golkowski; U. S. InanK. D. Papadopoulos

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Propagation of whistler mode waves with a modulated frequency in the magnetosphere

机译：惠斯勒模式波的传播磁气圈的调制频率

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This paper presents results from experimental and numerical studies of the propagation of whistler mode waves in the Earth's magnetosphere. An experiment conducted at the High Frequency Active Auroral Research Program (HAARP) on 16 March 2008 demonstrates that ionospherically generated waves with particular frequency-time formats are amplified on their pass from HAARP to the conjugate location in the South Pacific Ocean more efficiently than waves with a constant frequency. Numerical simulations of a one-dimensional electron magnetohydrodynamics (MHD) model in the dipole magnetic field geometry reveal that the amplification takes place more efficiently when the frequency of the whistler mode waves (in the frequency range from 0.5 to 1.0 kHz) changes in the equatorial magnetosphere with the rate from 0.25 to 0.47 kHz/s. The maximum amplification occurs when this rate is 0.33 kHz/s and no/very little amplification is observed when this gradient is equal to 0 or when it is larger than 0.78 kHz/s.

机译：本文从实验和结果惠斯勒的传播的数值研究模式波在地球的磁气圈。实验在高频活跃极光研究项目(HAARP) 2008年3月16日表明ionospherically生成波与特定的频率时间格式通过从HAARP放大共轭位置在南太平洋更有效地比波与一个常数频率。一维电子磁动流体力学(磁流体动力)偶极磁场的几何模型显示,放大发生更多惠斯勒的频率时有效模式波(频率范围从0.5到1.0 kHz)赤道磁气圈的变化与利率从0.25至0.47千赫/ s。最大放大发生在这个速度0.33千赫/ s /很少放大观察这个梯度等于0时或者当它大于0.78千赫/ s。

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来源
《Journal of Geophysical Research, A. Space Physics: JGR》 |2010年第9期|A09209:1-A09209:11|共11页
作者
A. V. Streltsov; M. Golkowski; U. S. InanK. D. Papadopoulos;
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作者单位

STAR Laboratory, Stanford University, Stanford, California, USA;

Department of Electrical Engineering, University of Colorado, Denver, Colorado, USA;

Thayer School of Engineering, Dartmouth College, Hanover, New Hampshire, USADepartment of Physics and Astronomy, University of Maryland, College Park, Maryland, USA;

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原文格式 PDF
正文语种英语
中图分类空间物理;
关键词
modulating frequency; waves; WHISTLER INSTABILITYPachycephalinaeSouth Pacific;

机译：调制频率;波浪;惠斯勒不稳定性头颅科南太平洋;

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Propagation of whistler mode waves with a modulated frequency in the magnetosphere

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