1. Seismology Section; Royal Observatory of Belgium; Uccle Belgium
2. Earth Observatory of Singapore, Nanyang Technological University; Nanyang Singapore
3. Department of Earth and Environmental Sciences; Université Libre de Bruxelles; Brussels Belgium
4. Centre for Volcanology and Geological Hazard Mitigation, Geological Agency; Ministry of Energy and Mineral Resources; Bandung Indonesia
5. Helmholtz Centre German Research Centre for Geosciences; Potsdam Germany
6. Cascades Volcano Observatory; U.S. Geological Survey; Vancouver Washington USA
7. Department of Geology and Applied Geology; Université de Mons; Mons Belgium