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首页> 外文期刊>Journal of Geophysical Research, A. Space Physics: JGR >Inner belt and slot region electron lifetimes and energization rates based on AKEBONO statistics of whistler waves
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Inner belt and slot region electron lifetimes and energization rates based on AKEBONO statistics of whistler waves

机译：内部辐射带和电子寿命和槽区域激发率的曙太郎统计的基础上惠斯勒波

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摘要

Global statistics of the amplitude distributions of hiss, lightning-generated, and other whistler mode waves fromterrestrial VLF transmitters have been obtained from the EXOS-D (Akebono) satellite in the Earth’s plasmasphere and fitted as functions of L and latitude for two geomagnetic activity ranges (K_p 3). In particular, the present study focuses on the inner zone L ∈ [1.4, 2] where reliable in situ measurements were lacking. Such statistics are critically needed for an accurate assessment of the role and relative dominance of each type of wave in the dynamics of the inner radiation belt. While VLF waves seem to propagate mainly in a ducted mode at L ～ 1.5–3 for K_p 3). Hiss waves are generally the most intense in the inner belt, and lightning-generated and hiss wave intensities increase with geomagnetic activity. Lightning-generated wave amplitudes generally peak within 10? of the equator in the region L < 2 where magnetosonic wave amplitudes are weak for K_p < 3. Based on this statistics, simplified models of each wave type are presented. Quasi-linear pitch angle and energy diffusion rates of electrons by the full wave model are then calculated. Corresponding electron lifetimes compare well with decay rates of trapped energetic electrons obtained from Solar Anomalous and Magnetospheric Particle Explorer and other satellites at L ∈ [1.4, 2].
机译：全球数据的振幅分布嘘,lightning-generated和其他惠斯勒模式波fromterrestrial甚低频发射器从EXOS-D获得(曙太郎)卫星在地球的等离子体层和安装L和两个地磁纬度的函数活动范围(K_p 3)。具体来说,本研究关注的是内带L∈(1.4,2)原位可靠的地方测量缺乏。急需一个精确的评估每种类型的角色和相对优势波的动力学内部辐射带。而似乎甚低频电波传播主要发生在管道中的模式在3 L ~ 1.5 K_p 3)。嘘波通常最激烈的内部辐射带,lightning-generated和嘶嘶声波强度增加与地磁活动。Lightning-generated波振幅一般峰值在10 ?2,磁声波振幅较弱K_p < 3。提出了模型的波型。准线性螺旋角和能量扩散利率的电子全波模型然后计算。比较好困的衰减率充满活力的电子从太阳能获得异常和磁层粒子探测器和其他卫星在L∈(1.4,2)。

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