^○Emile Okal (Northwestern University, Evanston, IL USA)

^○Emile Okal (Northwestern Univesity, Evanston, IL USA)

^○Graziano Ferrari, Barbara Palombo, Rodolfo Console, Paola Vannoli (Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy)

^○Josep Batllo¹, Jose Antonio Jara¹, Judith Unamuno², Maria Teresa Merino³ (1.Institut Cartografic i Geologic de Catalunya, Barcelona, Spain, 2.AdHoc Synectic Systems S.A., Barcelona, Spain, 3.Observatori Fabra (RACAB), Barcelona, Spain)

^○Vala Hjorleifsdottir¹, Shri Krishna Singh¹, Bjorn Lund², Chen Ji³ (1.Universidad Nacional Autonoma de Mexico, Mexico City, Mexico, 2.Department of Earth Sciences, Uppsala University, Sweden, 3.Department of Earth Science, University of California, Santa Barbara, USA)

Raul Daniel Corona, ^○Miguel Angel Santoyo (Institute of Geophysics. National Autonomous University of Mexico, Morelia, Mexico.)