Schumann resonances at Mars: effects of the day-night asymmetry and the dust-loaded ionosphere

Sergio Toledo-Redondo 1 Alfonso Salinas 2 Jorge Portí 3 Olivier Witasse 4 Sandy Cardnell 4 Jesus Fornieles 2 Gregorio J. Molina-Cuberos 5 Grégoire Déprez 6 Franck Montmessin 6
1 ESAC - European Space Astronomy Centre
2 EFM - Department of Electromagnetism and Matter Physics [Granada]
3 Departamento de Fisica Aplicada [Granada]
4 ESTEC - European Space Research and Technology Centre
5 Department of Electromagnetism and Electronics [Murcia]
6 IMPEC - LATMOS
LATMOS - Laboratoire Atmosphères, Milieux, Observations Spatiales
Abstract : Schumann resonances are standing waves that oscillate in the electromagnetic cavity formed between the conducting lower ionosphere and the surface of the planet. They have been measured in-situ only on Earth and Titan, although they are believed to exist on other planets like Mars. We report numerical simulations of the Martian electromagnetic cavity, accounting for the day - night asymmetry and different dust scenarios. It has been found that the resonances are more energetic on the nightside, the first resonance is expected to be 9 - 14 Hz depending on the dust activity, and to have low quality factors (Q≃2). This work serves as an input for the upcoming Exomars surface platform (launch 2020), who will attempt to measure them for the first time.
Keywords : dust storm day-night asymmetry Mars Schumann resonance
Type de document :
Article dans une revue
Geophysical Research Letters, American Geophysical Union, 2017, 44 (2), pp.648-656. 〈10.1002/2016GL071635〉
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https://hal-insu.archives-ouvertes.fr/insu-01427750
Contributeur : Catherine Cardon <>
Soumis le : vendredi 6 janvier 2017 - 08:22:26
Dernière modification le : jeudi 13 décembre 2018 - 01:31:14

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INSU | UPMC | LATMOS | UVSQ | UNIV-PARIS-SACLAY | SORBONNE-UNIVERSITE

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Sergio Toledo-Redondo, Alfonso Salinas, Jorge Portí, Olivier Witasse, Sandy Cardnell, et al.. Schumann resonances at Mars: effects of the day-night asymmetry and the dust-loaded ionosphere. Geophysical Research Letters, American Geophysical Union, 2017, 44 (2), pp.648-656. 〈10.1002/2016GL071635〉. 〈insu-01427750〉

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