Articles | Volume 36, issue 5
Ann. Geophys., 36, 1483–1493, 2018
https://doi.org/10.5194/angeo-36-1483-2018

Special issue: Dynamics and interaction of processes in the Earth and its...

Ann. Geophys., 36, 1483–1493, 2018
https://doi.org/10.5194/angeo-36-1483-2018

Regular paper 29 Oct 2018

Regular paper | 29 Oct 2018

Electromagnetic field observations by the DEMETER satellite in connection with the 2009 L'Aquila earthquake

Igor Bertello et al.

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Short summary
This paper presents a completely new method based on a new data analysis technique (ALIF) to determine both the environmental and instrumental backgrounds applied to all the DEMETER satellite electric and magnetic field data over L'Aquila's seismic region. Interestingly, on 4 April 2009, when DEMETER flew exactly over L'Aquila at 20:29 UT, an anomalous signal was observed at 333 Hz on both the electric and magnetic field data, whose characteristics seem to be related to pre-seismic activity.