Solar and Human Activity Influence on Electromagnetic Noise in the Polar Regions

利用地磁共轭站、南极Syowa站和冰岛Husafell站的观测资料，研究了太阳和人类活动对电磁噪声的影响。为了研究该科学项目，我们分析了ELF/VLF （750 Hz, 2 kHz）、ULF （0.01-0.1 Hz）和HF （30 MHz）波强度的统计特征。研究结果如下：1。ELF/VLF波强度在白天和夏季最大。强度受太阳活动的影响，周期为27天，周期为11年。极低频波强度表现出强烈的季节变化，冬季最强。这一特性意味着，当极低频波从磁层传播到地面时，它被倾倒在阳光电离层中。兆赫高频波在日照时间和太阳活动期最大。此外，30兆赫的波强度在周日达到最低。星期天是假日，人们可能会安静下来。也就是说，我们发现人类活动对极地高频波噪声有影响。

Solar and human activity influence on electromagnetic noise were studied using data observed at geomagnetically conjugate stations, Syowa Station in Antarctica and Husafell in Iceland. In order to study the science project, we analyzed statistical characteristics of ELF/VLF (750 Hz, 2 kHz), ULF (0.01-0.1 Hz) and HF (30 MHz) wave intensity. The results are as follows,1. ELF/VLF wave intensity became maximum during daytime and summer season. The intensity was also influenced by solar activity with periodicity of 27 days and 11 years.2. ULF wave intensity showed strong seasonal variation with maximum during winter season. This characteristics mean that ULF waves are dumped in the sunlight ionosphere when it propagates from the magnetosphere to the ground.3. MHz HF waves became maximum during sunlight time and also solar activeperiod. Furthere more, 30 MHz waves intensit, became minimum on Sunday. Sunday is a holyday and human activity may be quiet. That is, we found that human activity influences on HF waves noise in the polar regions.