AUGUSTE , Michel

The karstic system of th e 'Fontaine de Vaucluse' has been investigated for many years to get a better understanding of its global functioning. Yet, until now, the Unsaturated Zone (UZ) of this aquifer has been studied indirectly. With the access to the UZ provided by the galleries of the Low-Noise Underground Laboratory of Rustrel in France...

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The study of karstic systems is mainly based on hydrodynamic and hydrochemical data collected at system inlets (rainfall) and outlets (springs). Indeed, some complementary data base coming from speleological and hydrogeological explorations of natural cavities exist. However, they are not completely representative of all the types of flows....

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Each ground movement on Earth shakes the air column above it. When the acoustic wave reaches the ionosphere floor, charges are temporarily displaced, parallel to the acoustic excitation. An electric current is created giving birth to a magnetic signal. The density difference between ground and air makes the coupling very poor but this is...

One hour before the Sichuan earthquake (Mw=7.9, 2008 May 12, 06:28~TU), amplified, recurrent and well-defined ionosphere excitations at the resonance frequency of the ionosphere floor were observed by the [SQUID]2 system, an ultra low-noise magnetometer with a rejection rate better than 3fT/√Hz over 40~Hz installed within the LSBB underground...