Preprints
https://doi.org/10.5194/gi-2023-1
https://doi.org/10.5194/gi-2023-1
17 Apr 2023
 | 17 Apr 2023
Status: this preprint is currently under review for the journal GI.

A VLF/LF facility network for preseismic electromagnetic investigations

Patrick H. M. Galopeau, Ashanthi S. Maxworth, Mohammed Y. Boudjada, Hans U. Eichelberger, Mustapha Meftah, Pier F. Biagi, and Konrad Schwingenschuh

Abstract. Earthquakes are one of the most frequently occurring natural disasters. Many indications have been collected on the presence of seismo-ionospheric perturbations preceding such tragic phenomena. Radio techniques are the essential tools leading the detection of seismo-electromagnetic emissions by monitoring at very low frequency (VLF, 3–30 kHz) and low frequency (LF, 30–300 kHz) sub-ionospheric paths between transmitters and receivers (Hayakawa, 2015). In this brief communication, we present the implementation of a VLF/LF network for searching earthquake electromagnetic precursors. The proposed system is comprised of a monopole antenna including a preamplifer, a GPS receiver and a recording device. This system will deliver a steady stream of real-time amplitude and phase-measurements and a daily recording VLF/LF data set. A first implementation of the system was done in Graz, Austria, the second one will be in Guyancourt, France, a third one in Réunion, France, and a fourth one in Moratuwa, Sri Lanka. In the near future, we are planning on expanding of our network for enhanced monitoring and increased coverage.

Patrick H. M. Galopeau et al.

Status: open (until 02 Jul 2023)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on gi-2023-1', Jean-Pierre Raulin, 21 May 2023 reply

Patrick H. M. Galopeau et al.

Patrick H. M. Galopeau et al.

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Short summary
We present the implementation of a VLF/LF network for searching earthquake electromagnetic precursors. The proposed system will deliver a steady stream of real-time amplitude and phase-measurements and a daily recording VLF/LF data set. A first implementation of the system was done in Graz, Austria, the second one will be in Guyancourt, France, a third one in Réunion, France, and a fourth one in Moratuwa, Sri Lanka.