About this Research Topic
A large number of ELF/VLF electromagnetic (EM) waves can be observed on the ground and in space, and these waves have two origins. One is from anthropogenic sources, such as ELF/VLF transmitters, power line harmonic radiation, etc., and one is from natural sources, such as broadband electromagnetic waves excited by seismic activities and lightning, hiss waves during magnetic storms, etc.
The EM waves from lightning and ELF/VLF transmitters could propagate not only in the earth-ionosphere waveguide which is utilized to remote sense the ionospheric D/E layer but also through the Earth's ionosphere and into the magnetosphere. On the other hand, the EM waves propagating in the magnetospheric plasma can induce precipitation of trapped energetic particles and influence the ionosphere.
Therefore, an extensively study on the propagation characteristics of these EM waves will contribute to a deep understanding of the atmosphere-ionosphere-magnetosphere coupling mechanism and models.
In recent years, many spacecrafts operating in near-Earth space such as CSES, GOES, Cluster, THEMIS, the Van Allen Probes, MMS, Arase, and Swarm, combined with ground-based observatories such as the MAGDAS, SuperMAG, and INTERMAGNET networks, are utilized to study the characteristics of these EM waves. Meanwhile many models have also been developed to study the upward and downward propagation mechanisms of the EM wave. Therefore, the main goal of this Research Topic is to study the EM waves observed by different satellite and ground-based equipment to get more understanding of these waves and their origins.
This Research Topic aims at gathering recent advances from disciplines including but not limited to:
- Investigations of ELF/VLF waves in the atmosphere, ionosphere and magnetosphere using ground and spacecraft observation
- Study on the ELF/VLF remote sensing of the ionospheric D/E layer and the lower ionosphere response during solar activities.
- Study on propagation characteristics of ELF/VLF waves during geomagnetic storms/substorms.
The EM waves from lightning and ELF/VLF transmitters could propagate not only in the earth-ionosphere waveguide which is utilized to remote sense the ionospheric D/E layer but also through the Earth's ionosphere and into the magnetosphere. On the other hand, the EM waves propagating in the magnetospheric plasma can induce precipitation of trapped energetic particles and influence the ionosphere.
Therefore, an extensively study on the propagation characteristics of these EM waves will contribute to a deep understanding of the atmosphere-ionosphere-magnetosphere coupling mechanism and models.
In recent years, many spacecrafts operating in near-Earth space such as CSES, GOES, Cluster, THEMIS, the Van Allen Probes, MMS, Arase, and Swarm, combined with ground-based observatories such as the MAGDAS, SuperMAG, and INTERMAGNET networks, are utilized to study the characteristics of these EM waves. Meanwhile many models have also been developed to study the upward and downward propagation mechanisms of the EM wave. Therefore, the main goal of this Research Topic is to study the EM waves observed by different satellite and ground-based equipment to get more understanding of these waves and their origins.
This Research Topic aims at gathering recent advances from disciplines including but not limited to:
- Investigations of ELF/VLF waves in the atmosphere, ionosphere and magnetosphere using ground and spacecraft observation
- Study on the ELF/VLF remote sensing of the ionospheric D/E layer and the lower ionosphere response during solar activities.
- Study on propagation characteristics of ELF/VLF waves during geomagnetic storms/substorms.
Keywords: ELF/VLF Electromagnetic waves, Coupling mechanisms, Wave propagation, solar activities, Space- and ground-based observations
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