Volume 35 Issue 2
Mar.  2015
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Article Navigation >  Chinese Journal of Space Science  > 2015  >  35(2): 178-184
Zhao Shufan, Shen Xuhui, Zhang Xuemin, Pan Weiyan. Full wave calculation of VLF wave penetrated into satellite altitude ionosphere[J]. Chinese Journal of Space Science, 2015, 35(2): 178-184. doi: 10.11728/cjss2015.02.178
Citation: Zhao Shufan, Shen Xuhui, Zhang Xuemin, Pan Weiyan. Full wave calculation of VLF wave penetrated into satellite altitude ionosphere[J]. Chinese Journal of Space Science, 2015, 35(2): 178-184. doi: 10.11728/cjss2015.02.178
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Full wave calculation of VLF wave penetrated into satellite altitude ionosphere

doi: 10.11728/cjss2015.02.178 cstr: 32142.14.cjss2015.02.178
  • 1.

    Institute of Earthquake Science, China Earthquake Administration, Beijing 100081

  • 2.

    China Research Institute of Radiowave Propagation, Qingdao 266107

  • Received Date: 2014-03-10
  • Rev Recd Date: 2014-10-13
  • Publish Date: 2015-03-15
    Abstract
  • Obvious anomalous VLF, ULF, SLF signals related with earthquake have been recorded by satellites. Research on finding electromagnetic anomaly in the ionosphere may become an important way for earthquake prediction. The calculation of VLF wave propagating in the ionosphere can provide theoretical results for extracting abnormal signals related with earthquake from satellite observation data. The ionosphere has been set to be lossy and anisotropic horizontal multi-layer media. The propagation matrix method had been used to solve the full wave equation. The reflection and polarization coefficient of two characteristic waves in the ionosphere has been calculated. The poynting flux and horizontal components of electromagnetic fields varying with altitude have also been simulated. The numerical results show that it is easier for the vertical polarized wave to penetrate into the ionosphere than parallel polarized wave. The left-handed polarization wave suffers severe attenuation in D region for the strong absorption. The right-handed polarization wave is transmitting mode, and the wave energy is saved in the magnetic field. The attenuation of the wave is lower when the frequency is smaller which means it may be more efficient for us to study the magnetic field of the lower frequency wave to find the electromagnetic abnormals of earthquakes.

     

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