Travel‐time magnetoseismology: Magnetospheric sounding by timing the tremors in space
Travel‐time magnetoseismology: Magnetospheric sounding by timing the tremors in space
复制标题
走时磁震学：通过对空间震动计时进行磁层探测
DOI：
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发表时间：
2005
期刊：
影响因子：
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通讯作者：
C. Russell
中科院分区：
文献类型：
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作者：
P. Chi;C. Russell
本文介绍了利用磁脉冲信号在不同位置的到达时间来推断磁层等离子体密度分布的思想。Tamao的磁流体动力学（MHD）波传播模型被用作该方法的基本原理。这种方法类似于对地震信号的到达进行计时以了解地球内部。一个突发脉冲事件的测试表明，这一想法的结果是在很好的协议与经验等离子体密度模型，以及独立估计的密度场线共振方法。
This letter introduces the idea of timing the arrival of magnetic impulsive signals at different locations to infer the density distribution of magnetospheric plasma. Tamao's model of magnetohydrodynamic (MHD) wave propagation is used as the underlying principle of this method. The methodology is similar to timing the arrival of seismic signals to understand the Earth's interior. A test of this idea on a sudden impulse event shows that the results are in good agreement with an empirical plasma density model as well as with the density estimated independently by the field line resonance method.