Schumann resonance spectra in a two-scale-height Earth-ionosphere cavity
Schumann resonance spectra in a two-scale-height Earth-ionosphere cavity
复制标题
两个尺度高度的地球电离层空腔中的舒曼共振谱
DOI：
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发表时间：
1996
期刊：
影响因子：
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通讯作者：
D. Sentman
中科院分区：
文献类型：
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作者：
D. Sentman
提出了雷击舒曼共振的电磁分量的振幅谱和功率谱的新表达式。使用经典的正态方法，直接以地球-电离层空腔的复特征频率表示。利用先前关于耗散地球-电离层空腔的双尺度高度模型的特征值问题的简化公式，这些结果允许根据系统的几何性质计算光谱。这些表达式以一种方便的形式应用于相关研究，涉及使用共振强度作为其他地球系统参数（如热带大陆平均温度）的代理度量[Williams， 1992]。
New expressions are developed for the amplitude and power spectra of the electric and magnetic components of lightning-excited Schumann resonances. A classical normal mode approach is used, yielding expressions directly in terms of the complex eigenfrequencies of the Earth-ionosphere cavity. Using previous simplified formulations of the eigenvalue problem in terms of a two-scale-height model of a dissipative Earth-ionospheric cavity, these results permit calculation of spectra in terms of geometric properties of the system. The expressions are in a convenient form for application in correlation studies involving use of the resonance intensities as a proxy measure of other Earth system parameters, such as average tropical continental temperature [Williams, 1992].