Extremely low frequency electromagnetic field measurements at the Hylaty station and methodology of signal analysis
Extremely low frequency electromagnetic field measurements at the Hylaty station and methodology of signal analysis
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DOI：
10.1002/2014rs005400
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发表时间：
2014-06-01
期刊：
影响因子：
1.6
通讯作者：
Zieba, Stanislaw
中科院分区：
文献类型：
--
作者：
Kulak, Andrzej;Kubisz, Jerzy;Zieba, Stanislaw
我们介绍Hylaty地球物理站，一个用于极低频（ELF, 0.03-300 Hz）电磁场测量的高灵敏度和低噪声设施，可以进行与大气，电离层，磁层和空间天气物理相关的各种地球物理和气候研究。1994年在雅盖隆大学进行了对极低频电磁场的第一次系统观测。起初，在波兰东南部比耶什扎迪山脉人烟稀少的地区进行考察时，测量是零星进行的。2004年，在非常低的电磁噪声环境下，在那里建立了一个自动Hylaty极低频站，可以连续记录极低频电磁场在60hz以下频率范围内的磁场分量。2013年，经过8年的成功运行，该站进行了升级，将其频率范围扩大到300赫兹。在本文中，我们展示了该站的技术设置，以及多年来它是如何变化的。我们讨论了极低频设备的设计，包括天线、接收机、时间控制电路和电源，以及天线和接收机的校准。我们还讨论了我们开发的舒曼共振观测方法和极低频场脉冲的宽带观测方法。我们提供了在车站记录的各种信号的例子。
We present the Hylaty geophysical station, a high-sensitivity and low-noise facility for extremely low frequency (ELF, 0.03-300 Hz) electromagnetic field measurements, which enables a variety of geophysical and climatological research related to atmospheric, ionospheric, magnetospheric, and space weather physics. The first systematic observations of ELF electromagnetic fields at the Jagiellonian University were undertaken in 1994. At the beginning the measurements were carried out sporadically, during expeditions to sparsely populated areas of the Bieszczady Mountains in the southeast of Poland. In 2004, an automatic Hylaty ELF station was built there, in a very low electromagnetic noise environment, which enabled continuous recording of the magnetic field components of the ELF electromagnetic field in the frequency range below 60 Hz. In 2013, after 8 years of successful operation, the station was upgraded by extending its frequency range up to 300 Hz. In this paper we show the station's technical setup, and how it has changed over the years. We discuss the design of ELF equipment, including antennas, receivers, the time control circuit, and power supply, as well as antenna and receiver calibration. We also discuss the methodology we developed for observations of the Schumann resonance and wideband observations of ELF field pulses. We provide examples of various kinds of signals recorded at the station.