María Magdalena Barros Alcalde, Pontifical Catholic University of Chile, Santiago, Chile, Ching-Yao Lai, Stanford University, Department of Geophysics, Stanford, CA, United States, Niall Coffey, Stanford University, Geophysics, Stanford, CA, United States and Cristian R Escauriaza, Pontifical Catholic University of Chile, Hydraulic and Environmental Engineering, Santiago, Chile