Samuel McRae Haugland, Colorado School of Mines, Department of Geophysics, Golden, CO, United States, Ridvan Orsvuran, University of Nice Sophia Antipolis, Observatoire de la Côte d’Azur, Nice, France, Ebru Bozdag, Colorado School of Mines, Golden, CO, United States and Daniel B Peter, ETH Zurich, Zurich, Switzerland