Graham Hill, Czech Academy of Sciences, Institute of Geophysics, Prague, Czech Republic, Max Moorkamp, Ludwig Maximilians University of Munich, Earth and Environmental Sciences, Munich, Germany, Paul Bedrosian, U.S. Geological Survey, Geology, Geophysics, and Geochemistry Science Center, Denver, United States, Yann Avram, Phoenix Geophysics Limited, Toronto, ON, Canada, Corrado Cimarelli, Ludwig-Maximilians Universität München, Department of Earth and Environmental Sciences, Munich, Germany, Adam Schultz, Oregon State University, College of Earth, Ocean and Atmospheric Sciences, Corvallis, OR, United States, Yasuo Ogawa, Volcanic Fluid Research Center, Tokyo Institute of Technology, Tokyo, Japan, Jochen Kamm, Geological Survey of Finland, Espoo, Finland, Duygu Kiyan, Dublin Institute for Advanced Studies, Dublin, Ireland, Matthew Comeau, Delft University of Technology, Delft, Netherlands and Luca Caricchi, University of Geneva, Department of Earth Sciences, Geneva, Switzerland