1. Institut de Physique du Globe de Paris, Université Sorbonne Paris Cité, Université Paris Diderot, CNRS UMR-7154, Paris 75005, France
2. Department of Geography, University of Cambridge, Cambridge CB2 3EN, UK
3. Museum of Geology, Badan Geologi, Jl., 40122 Bandung, Indonesia
4. Center of Volcanology and Geological Hazards Mitigation (CVGHM), Badan Geologi, Jl., 40122 Bandung, Indonesia