标题：A Full Wave Calculation of VLF Waves in Auroral Zone (c. Wave-Particle Interactions in the Magnetosphere) (Proceedings of the Second Symposium on Coordinated Observations of the Ionosphere and Magnetosphere in the Polar Regions : Part I)
其他标题：極光帯におけるVLF波のFull Wave計算(c.磁気圏内の波動粒子相互作用)(第2回極域における電離圏磁気圏総合観測シンポジウム : Part I)
摘要：A full wave treatment including the ground effect is briefly described for a whistler wave incident onto the ionosphere from above. The absorption of the VLF hiss and chorus waves in the lower ionosphere of the polar region is comouted. Two kinds of electron density profiles observed at Syowa Station are taken as the ionospheric models, one is in disturbed condition and the other in quiet condition. Intensities of the Poynting flux on the ground are calculated as parameters of the frequency and the dlp angle of the geomagnetic field. The results are as follows;(1) Absorption in the disturbed model is much greater than that in the quiet one (2) The absorption increases as the frequency grows higher. (3) The absorption decreases as the dip angle increases. Finally, seasonal variations of the collisional damping in the polar region are discussed.
