Observations of intensity variations and harmonics of heater induced VLF waves

被引：9
|
作者：
Oikarinen, A [1 ]
Manninen, J
Kultima, J
Turunen, T
机构：
[1] Univ Oulu, Dept Phys, Oulu, Finland
[2] Sodankyla Geophys Observ, Sodankyla, Finland
来源：
JOURNAL OF ATMOSPHERIC AND SOLAR-TERRESTRIAL PHYSICS | 1997年 / 59卷 / 18期
关键词：
D O I：
10.1016/S1364-6826(96)00128-9
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
Very low-frequency (VLF) radio waves have been generated in the ionosphere by the heating facility near Troms<empty set>. VLF signals have been received at Porojarvi (69.17 degrees N, 21.47 degrees E, L=6.1), in Northern Finland, about 100 km from the heating transmitter. Three heating experiments were performed under different geophysical conditions and different results were obtained. Signal intensities have been compared with magnetic variations. Correlations and anti-correlations were observed. Several harmonics of the generated signal have generally been found. In some cases when the intensity of the detected VLF signal was low the first harmonic was as intensive as the fundamental frequency. VLF response from Artificial Periodic Inhomogeneities (API) experiment was also observed. (C) 1997 Published by Elsevier Science Ltd.
引用
收藏
页码：2351 / 2360
页数：10
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