Volume 27 Issue 3
May  2007
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SUN Lingfeng, WAN Weixing, DING Feng, MAO Tian. Study of Internal Gravity Waves Propagation on the Basis of the Three-Dimensional Transfer Function Model[J]. Journal of Space Science, 2007, 27(3): 211-217. doi: 10.11728/cjss2007.03.211
Citation: SUN Lingfeng, WAN Weixing, DING Feng, MAO Tian. Study of Internal Gravity Waves Propagation on the Basis of the Three-Dimensional Transfer Function Model[J]. Journal of Space Science, 2007, 27(3): 211-217. doi: 10.11728/cjss2007.03.211

Study of Internal Gravity Waves Propagation on the Basis of the Three-Dimensional Transfer Function Model

doi: 10.11728/cjss2007.03.211
  • Received Date: 1900-01-01
  • Rev Recd Date: 1900-01-01
  • Publish Date: 2007-05-15
  • In this paper the three-dimensional transfer function model has been developed in the atmosphere with dissipation and background winds. Then the model is used to analyze the filter characteristics in the frequency wavenumber domain and the spatial-temporal domain. Finally, we discussed the total energy of ionosphere response on the three rectangle waves with the different spatial-temporal scales on the surface. The computed results reveal that for internal gravity waves, the atmosphere behaves like a filter which only offers the easy passage to some gravity waves with periods of 15-30 min and with horizontal wave lengths of 200-400 km. The wave fronts which are like funnels in vertical profile and concentric circles in horizontal plane are distorted by the background winds when the gravity waves propagate from the earth surface to the ionospheric height. The gravity waves propagating against winds are easier than those propagating along winds. The total energy of ionosphere response can arrive at maximum when rectangle wave source's spatial scale is between 150km to 250km and temporal scale is between 20min to 30min.

     

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