*Yuri Kijima ¹, Kazuhisa Goto¹, Ulaiasi Funilagi², Yuya Ikenaga³, Kanako Iuchi⁴, Yasuhito Jibiki¹, Katsumi Kasai¹, Manasa Luvunakoro², Saula Mule², Tatsuji Nishizawa⁵, Katarina Rayawa², Vikrant Singh², Takashi Ishizawa⁴, Yosuke Miyairi¹, Yusuke Yokoyama¹, Mie Ichihara¹ (1. The University of Tokyo,Japan, 2. Mineral Resources Department, Fiji, 3. Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology, 4. Tohoku University,Japan, 5. Mount Fuji Research Institute, Japan)

*Koki Nakata¹, Kazuhisa Goto¹, James Goff^2,3, Rennie Vaiomounga⁴, Taaniela Kula⁴, Mie Ichihara⁵ (1. The University of Tokyo, 2. University of New South Wales, 3. The University of Southampton, 4. Tonga Geological Services, 5. Earthquake Research Institute, The University of Tokyo)

*Kenta Minamidate¹, Kazuhisa Goto¹, Dai Takahashi¹, Takashi Ishizawa², Yusuke Yokoyama³, Kazuyoshi Endo¹ (1. Department of Earth and Planetary Science, The University of Tokyo, 2. International Research Institute of Disaster Science, Tohoku University, 3. Atmosphere and Ocean Research Institute, The University of Tokyo)

*Takashi Ishizawa¹, Ryosuke Fujita², Yasufumi Iryu³, Yosuke Miyairi⁴, Yusuke Yokoyama⁴, Kazuhisa Goto⁵ (1. International Research Institute of Disaster Science, Tohoku University, 2. Department of Earth Science, Tohoku University, 3. Advanced Institute for Marine Ecosystem Change, Tohoku University, 4. Atmosphere and Ocean Research Institute, The University of Tokyo, 5. Department of Earth and Planetary Science, The University of Tokyo)

*Rebecca Carey¹, Vanessa Lucieer², Jodi Fox², Peter Harris², Michael Manga³, Martin Crundwell⁹, Kathleen McKee⁴, Marta Ribo⁵, Mele Manu⁶, Rennie Vaiomaounga⁶, Martin Jutzeler¹, Shannon Frey¹, Bronwyn Davies, Rachael Baxter⁷, James White⁷, Hannah St Louis⁵, Sebastian Forero Escovar¹⁰, George Hamaty¹, Tia Ewen², Ellyse Noy¹, Cecilia Tabuavou⁸, Tomasi Mara⁸ (1. CODES, University of Tasmania, Australia, 2. IMAS, University of Tasmania, Australia, 3. University of California at Berkeley, USA, 4. Michigan Technological University, USA, 5. Auckland University of Technology, New Zealand, 6. Tonga Geological Services, Kingdom of Tonga, 7. University of Otago, 8. University of the South Pacific, 9. University of Auckland, 10. San Jose State University, USA)

*Kazuya Yamakawa¹, Ayuta Tsuge², Athanase Worwor³, Sandrine Cevuard³, John Jr Niroa³, Mie Ichihara² (1. Mount Fuji Research Institute, Prefecture of Yamanashi, 2. Earthquake Research Institute, The University of Tokyo, 3. Vanuatu Meteorology and Geohazards Department, Vanuatu)