1. Seismological Laboratory California Institute of Technology Pasadena CA USA
2. Now at Department of Earth and Space Sciences University of Washington Seattle WA USA
3. Institute of Marine Sciences ICM‐CSIC Barcelona Spain
4. Instituto de Optica CSIC Madrid Spain
5. Department of Electronics Polytechnic School University of Alcalá Alcalá de Henares Spain
6. Université Côte d’Azur CNRS Observatoire de la Côte d’Azur IRD Géoazur France
7. Environmental Science and Engineering California Institute of Technology Pasadena CA USA
8. Scripps Institution of Oceanography University of California, San Diego La Jolla CA USA