[S-VC34] Connecting magma dynamics in vent-conduit system with surface expression of volcanic eruption

Thu. May 30, 2019 5:15 PM - 6:30 PM Poster Hall (International Exhibition Hall8, Makuhari Messe)

convener:Takahiro Miwa(National research institute for earth science and disaster prevention), Nobuo Geshi(Geological Survey of Japan, The National Institute of Advanced Industrial Science and Technology)

Magma dynamics within a shallow conduit system control the diversity of behavior of volcanic eruptions. Recent advancements in geophysical, airborne and ground-based observation techniques provide quantitative data about the dynamic behavior of volcanic eruptions. New analytical methods of the macro and microtextures of eruptive products also open new insights on detailed dynamics of magmas within conduit. The aim of this session is the integration of these new techniques to approach the dynamics of magma ascending from a shallow part of conduit to vent. This session seeks submissions that explore magma dynamics controlling the behaviors of volcanic eruption by integrated investigation of 1) degassing, outgassing, crystallization, and fragmentation of ascending magma, 2) emission and recycling of eruptive product, and 3) morphological characterization of the vent-conduit system. We encourage contributions based on textural-petrological analyses of eruptive product, experimental study reproducing magma in the conduit, geophysical observation on surface expression of volcanic eruption, and related numerical modeling.

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[SVC34-P01] A new formulation of viscosity-included bubble nucleation rate in ascending magmas and re-estimation of bubble number density (2)

*Mizuki Nishiwaki¹, 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)

[SVC34-P02] Kinetic delay of crystal growth controls plagioclase-basaltic melt apparent disequilibrium

*Ryoya Oida¹, Hidemi Ishibashi¹, ATSUSHI YASUDA², Natsumi Hokanishi² (1.Faculty of Science, Shizuoka University, 2.Earthquake Research Institute, University of Tokyo)

[SVC34-P03] Eruptive trends and dynamics of remote volcanoes detected form space-based thermal data and SO₂ emissions: a comparative analysis of Stromboli, Batu Tara and Tinakula volcanoes

*Corrado CIGOLINI¹, Marco Laiolo¹, Francesco Massimetti^1,2, Maurizio Ripepe², Diego Coppola¹ (1.Department of Earth Sciences, University of Torino, Italy, 2.Department of Earth Sciences, University of Firenze, Italy)

[SVC34-P04] The source depth of Strombolian explosions: a multiparametric approach and comparison

*Jacopo Taddeucci¹, Miguel Angel Alatorre-Ibarguengoitia², Valeria Cigala³, Elisabetta Del Bello¹, Damien Gaudin⁴, Ulrich Kueppers⁴, Tullio Ricci¹, Valentino Salvatore⁵, Piergiorgio Scarlato¹ (1.Istituto Nazionale di Geofisica e Vulcanologia, Rome, Italy, 2.Centro de Investigación en Gestión de Riesgo y Cambio Climático, Universidad de Ciencias y Artes de Chiapas, Tuxtla Gutiérrez, Mexico, 3.Department of Geosciences, Università degli Studi di Padova, Padua, Italy, 4.Department of Earth and Environmental Sciences. Ludwig-Maximilians-Universität (LMU). Munich, Germany, 5.Dipartimento di Scienze della Terra, Sapienza Università di Roma, Rome, Italy)

[SVC34-P05] Magmatic aggregate of basaltic ash particles

*Takahiro Miwa¹, Nobuo Geshi² (1.National research institute for earth science and disaster prevention, 2.National Institute of Advanced Industrial Science and Technology)

[SVC34-P06] Melt inclusion study on the eruption process of Izu-Omuroyama monogenetic volcano, Japan

Risako Hatada¹, *Hidemi Ishibashi¹, Yusuke Suzuki², ATSUSHI YASUDA³, Natsumi Hokanishi³ (1.Faculty of Science, Shizuoka University, 2.Izu Peninsula Geopark, 3.Earthquake Research Institute, University of Tokyo)

[SVC34-P07] Time-series variation in the textures of ejecta of the An'ei eruption, Izu-Oshima

*Yuya Ikenaga¹, Fukashi Maeno¹, ATSUSHI YASUDA¹ (1.Earthquake Research Institute, The University of Tokyo)

[SVC34-P08] The textural analysis of pumice from the Plinian eruption of Taupo volcano: implications for tube pumice

*Masatoshi Ohashi¹, Mie Ichihara², Fukashi Maeno², Ben Kennedy³, Darren Gravley³ (1.Department of Earth and Planetary Science, Graduate School of Science, The University of Tokyo, 2.Earthquake Research Institute, The University of Tokyo, 3.Department of Geological Sciences, The University of Canterbury)

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