1. University of Strasbourg, CNRS, Institut de Physique du Globe de Strasbourg, UMR 7516 Strasbourg France
2. Université de Strasbourg, CNRS, LHyGeS UMR 7517 Strasbourg France
3. PoreLab, The Njord Centre, Department of Physics University of Oslo Oslo Norway
4. Lavrentev Institute of Hydrodynamics, Siberian Branch Russian Academy of Sciences Novosibirsk Russia