*Takashi Sano¹, Kenichiro Tani¹, Chris E. Conway² (1.National Museum of Nature and Science, 2.Geological Survey of Japan, AIST)

*Masaaki Morita¹, Toshiya Mori², Ryunosuke Kazahaya¹ (1.Geological Survey of Japan, AIST, 2.Graduate School of Science, The University of Tokyo)

*Kenichiro Tani¹, Osamu Ishizuka², Hiroki Minami⁶, Teruki Oikawa², Hajime Katayama², Yoshiaki Suzuki², Taketo Shimano³, Masashi NAGAI⁴, Fukashi Maeno⁵, Michihiko Nakamura⁷, Naoto Jimi⁸, Takashi Sano¹ (1.National Museum of Nature and Science, 2.National Institute of Advanced Industrial Science and Technology, 3.Tokoha University, 4.National Research Institute for Earth Science and Disaster Prevention, 5.University of Tokyo, 6.Japan Coast Guard Academy, 7.Tohoku University, 8.Nagoya University)

*Iona McIntosh¹, Isobel Yeo², Scott Bryan³, Matthew Dunbabin³, Kenichiro Tani⁴, Patrick Collins⁵ (1.Japan Agency for Marine-Earth Science and Technology, 2.National Oceanography Centre Southampton, UK, 3.Queensland University of Technology, Australia, 4.National Museum of Nature and Science, Japan, 5.Queens University Belfast, UK)

*Claudia Sanchez¹, Mie Ichihara¹ (1.Earthquake Research Institute, Tokyo University )

*Keiko Matsumoto¹, Nobuo Geshi¹ (1.Geological Survey of Japan, The National Institute of Advanced Industrial Science and Technology)

*Yusuke Minami¹, Keiko Matsumoto¹, Nobuo Geshi¹, Hiroshi Shinohara¹ (1.Geological Survey of Japan, AIST)

*Taishi Yamada¹, Masato Iguchi¹, Haruhisa Nakamichi¹ (1.Sakurajima Volcano Research Center, Disaster Prevention Research Institute, Kyoto University)

*Yuji Himematsu¹ (1.National Research Institute for Earth Science and Disaster Resilience)

*Dan Muramatsu¹, Koki Aizawa², Akihiko Yokoo³, Takeshi Tameguri⁴, Masato Iguchi⁴ (1.Department of Earth and Planetary Sciences, Graduate School of Science, Kyushu University, 2.Institute of Seismology and Volcanology, Faculty of Science, Kyushu University, 3.Aso Volcanological Laboratory, Institute for Geothermal Sciences, Kyoto University, 4.Sakurajima Volcano Research Center, Disaster Prevention Reserach Institute, Kyoto University)

*Kazuhiro Kimura¹, Katsuhisa Kawashima², Takane Matsumoto² (1.Meteorological College, Japan Meteorological Agency, 2.Research Institute for Natural Hazard & Disaster Recovery, Niigata University )

*Chris Conway¹, Leo Pure², Osamu Ishizuka¹ (1.Geological Survey of Japan, AIST, 2.Department of Agriculture, Water and the Environment, Australia)

*Katy Jane Chamberlain¹, Jane H Scarrow², Matthew J Pankhurst^3,4, Olivia A Barbee³, Beverley C Coldwell^3,4, David A Neave⁵, Dan J Morgan⁶, Penny Wieser⁷, James Hickey⁸, A Martin-Lorenzo^3,4, Fatima Rodriguez³, G K Rollinson⁸, William Hernandez³, P A Hernandez^3,4, N M Perez^3,4 (1.School of Health & Life Sciences, Centuria Building, Teesside University, Middlesbrough, Tees Valley, TS1 3BX, United Kingdom, 2.Department of Mineralogy and Petrology, University of Granada, Campus Fuentenueva, Granada 18002, Spain, 3. Instituto Volcanológico de Canarias (INVOLCAN), 38320 San Cristóbal de La Laguna, Tenerife, Canary Islands, Spain, 4.Instituto Tecnológico y de Energías Renovables (ITER), 38600 Granadilla de Abona, Tenerife, Canary Islands, Spain, 5.Department of Earth and Environmental Sciences, The University of Manchester, Oxford Rd, Manchester, M13 9PL, United Kingdom, 6.School of Earth and Environment, University of Leeds, Woodhouse, Leeds, LS2 9JT, United Kingdom, 7.College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis OR, 97331, USA, 8.Camborne School of Mines, University of Exeter, Penryn Campus, Cornwall, TR10 9FE, United Kingdom)