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Multiple-band electric field responding to the geomagnetic storm on 4 November 2021
  • +3
  • Jie Zheng,
  • Jianping Huang,
  • Zhong Li,
  • Jing Wen Li,
  • Ying Han,
  • hengxin lu
Jie Zheng
National Institute of Natural Hazards, Ministry of Emergency Management of China
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Jianping Huang
National Institute of Natural Hazards, Ministry of Emergency Management of China

Corresponding Author:[email protected]

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Zhong Li
School of Emergency Management, Institute of Disaster Prevention
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Jing Wen Li
National Institute of Natural Hazards, Ministry of Emergency Management of China
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Ying Han
Institute of Disaster Prevention
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hengxin lu
National Institute of Natural Hazards, Ministry of Emergency Management of China
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Abstract

In this paper, based on the electric field data (EFD) of the China Seismo-Electromagnetic Satellite (CSES), which is divided into 4 frequency bands (ULF, ELF, VLF, HF) from DC to 3.5 MHz, we study the impact characteristics of the 4 November 2021 magnetic storm activity in different frequency bands. It was found that the electric field anomalies caused by magnetic storms were mainly concentrated below 18 kHz, and above 18 kHz the effects were weak and gradually diminished to negligible. In the ULF band, excluding the influence of Schumann waves, the electric field anomalies caused by magnetic storms are mainly below 5 Hz, with the most influential frequency point being 3.4 Hz. In the ELF band, the more obvious anomalies appear at 300 Hz – 900 Hz and above 1.8 kHz, with the most significant anomalies in the 300 Hz – 900 Hz band around 780 Hz. In the VLF band, electric field anomalies are concentrated in 2.5 - 10 kHz. Magnetic storms had essentially no effect on the HF band. Magnetic storms at low and middle latitudes have a weak effect on the ELF and VLF bands and are more pronounced in the ULF band. During the main phase of the magnetic storm, the absolute magnitude of variance change in the ELF and VLF bands is greater than that in the ULF band as a whole, but the relative magnitude of variance change in the ULF band is 10% greater than that in the ELF and VLF bands.
21 May 2024Submitted to ESS Open Archive
21 May 2024Published in ESS Open Archive