Gauthier Guerin, Géoazur - Université Nice Sophia Antipolis, Valbonne, France, Aurélien Mordret, ISTerre, Saint Martin d'Hères, France, Diane Rivet, Institut de Physique du Globe de Paris, Paris, France, Bradley Paul Lipovsky, Stanford University, Stanford, CA, United States and Brent M Minchew, Organization Not Listed, Washington, DC, United States