Leonard Seydoux, Universite Grenoble Alpes, ISTerre, Grenoble, France, Randall Balestriero, Rice University, Electrical and Computer Engineering Department, Houston, TX, United States, Piero Poli, CNRS, Grenoble Cedex 9, France, Maarten V De Hoop, Rice University, Computational and Applied Mathematics, Houston, TX, United States, Richard Baraniuk, Rice University, Department of Electrical and Computer Engineering, Houston, TX, United States and Michel Campillo, ISTerre Institute of Earth Sciences, Saint Martin d'Hères, France