[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.

[SVC45-P01] Statistical classification of tephra from rootless eruptions

*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)

[SVC45-P02] Constraints on the chemical evolution of magma at Fuji volcano from plagioclase phenocrysts.

*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)

[SVC45-P03] Model experiments of degassing process in a crystal bearing magma

*Kana Hashimoto¹, Ikuro Sumita¹ (1.Kanazawa University)

[SVC45-P04] Visualization of the rapid crack propagation driven by a pressurized air in viscoelastic gels

*Atsuko Namiki¹, Makoto Takahashi¹ (1.Integrated Arts and Sciences, Hiroshima University)

[SVC45-P05] An experimental study of the role of subsurface plumbing on geothermal discharge

*Atsuko Namiki¹, Yoshinori Ueno¹, Shaul Hurwitz³, Michael Manga², Carolina Munoz-Saez², Fred Murphy³ (1.Graduate School of Integrated Arts and Sciences, Hiroshima University, 2.UC Berkeley, 3.USGS)

[SVC45-P06] Experimental study on precursory pressure oscillation in the experimental geyser system

*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)

[SVC45-P07] Recent uplift of Iwo-yama volcano, Kirishima Volcanic Complex, southwest Japan, derived from ALOS-2 images

*Hiroki Arai¹, Yosuke Aoki² (1.Faculty of Science, University of Tokyo, 2.Earthquake Research Institute, University of Tokyo)

Session information