Mariano Supino¹, Natalia Poiata^2,3, Gaetano Festa⁴, Jean-Pierre Vilotte², Claudio Satriano², Kazushige Obara⁵ and Nikolai Shapiro², (1)Institut de Physique du Globe, Paris, France, (2)Institut de Physique du Globe de Paris, Paris, France, (3)National Institute for Earth Physics, Ilfov, Romania, (4)The University of Naples Federico II, Department of Physics, Naples, Italy, (5)Earthquake Research Institute, The University of Tokyo, Tokyo, Japan