Seismo-ionosphere detection by underground SQUID in low-noise environment in LSBB-Rustrel, France

G. Waysand (1) , Pierre Barroy (2) , R. Blancon (3) , Stéphane Gaffet (1, 4) , C. Guilpin (5) , J. Marfaing , E. Pozzo Di Borgo , M. Pyée (6) , M. Auguste , D. Boyer (7) , A. Cavaillou (1)

1 LSBB - Laboratoire Souterrain à Bas Bruit
2 LPMC - Laboratoire de Physique de la Matière Condensée - UR UPJV 2081
3 AU - Avignon Université
4 GEOAZUR 7329 - Géoazur
5 UPD7 - Université Paris Diderot - Paris 7
6 LPC2E - Laboratoire de Physique et Chimie de l'Environnement et de l'Espace
7 ICCF - Institut de Chimie de Clermont-Ferrand

The permanent operation of a 3 axes magnetometer in the LSBB below 550 m of calcite rock is a unique system of magnetic observation: a rejection rate better than 3 fT/Hz over 40 Hz. The observation of magneto-ionosphere responses to wave emissions both at the epicentre and at their arrival at LSBB for earthquakes of magnitude larger than 3 is reported. A simple model predicts the starting time of these events. These results are compared with those provided by Doppler sounders for ionosphere responses to Rayleigh waves.

Mots clés: Physical Sciences

Domaines: Géophysique [physics.geo-ph]

G. Waysand, Pierre Barroy, R. Blancon, Stéphane Gaffet, C. Guilpin, et al.. Seismo-ionosphere detection by underground SQUID in low-noise environment in LSBB-Rustrel, France. European Physical Journal: Applied Physics, 2009, 47 (1), pp.12705. ⟨10.1051/epjap:2008186⟩. ⟨hal-00480181⟩