1. GFZ German Research Centre for Geosciences Telegrafenberg Potsdam14473Germany
2. Institute of Geological Sciences Polish Academy of SciencesResearch Centre in Warsaw Twarda 51/55 Warsaw00‐818Poland
3. Department of Geological Sciences University of Texas Austin TX78712USA
4. Institut de Physique du Globe de Paris CNRS Université de Paris ParisF‐75005France
5. Observatoire Volcanologique et Sismologique de Guadeloupe Institut de Physique du Globe de Paris GourbeyreF‐97113France
6. Department of Earth Sciences University of Delaware 255 Academy Street Newark DE19716USA
7. Institut für Geologische Wissenschaften Freie Universität Berlin Malteserstrasse 74‐100 Berlin12449Germany