Marcos Moreno, University of Concepcion, Department of Geophysics, Concepcion, Chile, Jan Bolte, KU Leuven, Instituut voor Sterrenkunde, Leuven, Belgium, Jonathan R. Bedford, Helmholtz Centre Potsdam GFZ German Research Centre for Geosciences, Potsdam, Germany, Christian Sippl, Academy of Sciences of the Czech Republic, Prague, Czech Republic, Shaoyang Li, University of Iowa, Iowa City, IA, United States, Frederik J Tilmann, Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Potsdam, Germany, Daniel Melnick, Universidad Austral de Chile, Valdivia, Chile, Francisco Ortega-Culaciati, University of Chile, FCFM - Department of Geophysics, Advanced Mining Technology Center, Santiago, Chile and Juan CARLOS Baez Sr, University of Chile, Santiago, Chile