*Rina Noguchi1, Kei Kurita2, Hideitsu Hino3, Nobuo Geshi4 (1.Volcano Fluid Research Center, Depertment of Science, Tokyo Institute of Technology, 2.Earthquake Research Institute, The University of Tokyo, 3.Department of Computer Science, Graduate School of Systems and Information Engineering University of Tsukuba, 4.Geological Survey of Japan, The National Institute of Advanced Industrial Science and Technology)
S (Solid Earth Sciences) » S-VC Volcanology
[S-VC45] [EE] Wet volcanology
Thu. May 25, 2017 1:45 PM - 3:15 PM Poster Hall (International Exhibition Hall HALL7)
convener:Atsuko Namiki(Graduate School of Integrated Arts and Sciences, Hiroshima University), Yosuke Aoki(Earthquake Research Institute, University of Tokyo), Michael Manga(University of California Berkeley)
Sudden expansion of volatiles (mainly water) is an important process of volcanic eruptions. Vaporization of external water enhances the potential of explosion originating phreatic and phreatomagmatic eruptions, which frequently occur as observed in 2014 Mt. Ontake and 2016 Mt. Aso eruptions. At the submarine volcanoes, sea water is the source of external water, and surrounding pressure controls the occurrence of explosion. Sometimes boiling water itself erupts as geysers and at mud volcanoes. The aim of this session is gathering the observations of wet volcanic phenomena and understanding their mechanisms. We welcome contributions on a wide range of targets and approaches, including, geophysical observations of phreatic eruptions, insights from sea floor exploration, geochemical measurements of hydrothermal systems, theoretical approaches and numerical simulations, and laboratory experiments.
*Chiyo Harada1, Tsuyoshi Iizuka1, Morihisa Hamada2, Mitsuhiro Yoshimoto3, ATSUSHI YASUDA4 (1.Department of earth and planetary science, University of Tokyo, 2.Department of Solid Earth Geochemistry, Japan Agency for Marine-Earth Science and Technology, 3.Mount Fuji Research Institute, Yamanashi Prefectural Government, 4.Earthquake Research Institute, University of Tokyo)
*Noriko Teshima1, Atsushi Toramaru2 (1.Department of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University, 2.Department of Earth and Planetary Sciences, Faculty of Sciences, Kyushu University)