[EE] Poster

S (Solid Earth Sciences) » S-VC Volcanology

[S-VC39] Pre-eruptive magmatic processes: petrologic analyses, experimental simulations and dynamics modeling

Thu. May 24, 2018 10:45 AM - 12:15 PM Poster Hall (International Exhibition Hall7, Makuhari Messe)

convener:Michihiko Nakamura(Division of Earth and Planetary Materials Science, Department of Earth Science, Graduate School of Science, Tohoku University), Akihiko Tomiya(Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology), Shanaka L de Silva (共同), Fidel Costa(Earth Observatory of Singapore, Nanynag Technological University)

Processes leading to volcanic eruptions are central and yet still enigmatic issues in volcanology. Recent advances in understanding thermo-mechanical and open-system behavior of magma reservoirs and mineral zoning stratigraphy allow us to take a step forward to reveal the complex incubation processes during volcanic dormancy and following magma chamber tapping. This session aims at putting together recent knowledge on magmatic processes including 1) magma chamber evolution through magma reintrusion, crystallization-induced volatile exolution, magma mixing and gas fluxing, 2) externally-driven eruption trigger mechanisms, and 3) conduit processes and controls on eruption styles such as outgassing, dehydration-induced crystallization, fragmentation and rheological transition of ascending magmas. We welcome contributions based on petrological, mineralogical and geochemical analyses of pyroclasts and volcanic gasses, experimental simulations of magma reservoir conditions and conduit flow dynamics, and numerical modeling to integrate the elementary processes.

[SVC39-P01] Insights into the petrogenesis of Taupo Volcanic Zone basalts from U-series isotope analysis of whole rocks, groundmasses, and minerals

★Invited Papers

*Georg F Zellmer¹, Claudine Stirling², Maria C Arpa¹, Gert Lube¹, Phil A Shane³ (1.Massey University, 2.University of Otago, 3.University of Auckland)

Presenter supplemental information

[SVC39-P02] Hydrous magma differentiation in deep crust recorded in melt inclusions in hornblende-bearing cumulate xenoliths from Ichinomegata Maar, NE Japan

*Yasuhiro Yanagida^1,2, Michihiko Nakamura¹, ATSUSHI YASUDA³, Takeshi Kuritani⁴, Mitsuhiro Nakagawa⁴, Takeyoshi Yoshida¹ (1.Department of Earth Science Graduate School of Science Tohoku Univiersity, 2.New Energy and Industrial Development Organization, 3.Earthquake Research Institute, University of Tokyo, 4.Graduate School of Science, Hokkaido University)

[SVC39-P03] Microanalytical evidence for Quaternary magma dynamics of crystal-rich and crystal-poor dacitic magma beneath Yotei Volcano, Hokkaido

*Shimpei Uesawa¹, Shanaka de Silva², Hisatoshi Ito¹ (1.Central Research Institute of Electric Power Industry, 2.Collage of Earth, Ocean, Atmospheric Sciences, Oregon State University)

[SVC39-P04] Pre-eruptive magmatic process of silicic monogenetic volcano inferred from amphibole phenocrysts: A case study of Izu-Kawagodaira volcano

*Yukiko Suwa¹, Hidemi Ishibashi¹, Natsumi Hokanishi², ATSUSHI YASUDA² (1.Faculty of Science, Shizuoka University, 2.Earthquake Reserch Institute, University of Tokyo)

[SVC39-P05] Petrological characteristics of Janoo products, a Holocene scoria cone, precursory to the 4-3.3 ka basaltic events in the NW part of Aso central cones, Kyushu.

*Florian Christian Gerard Brouillet^1,2, Toshiaki Hasenaka³, Masataka Kawaguchi¹, Tadao Nishiyama⁴ (1.Graduate School of Science and Technology, Kumamoto University, 2.Departement Geosciences, Université de Lorraine, France , 3.Center for Water Cycle Marine Environment and Disaster Management, Kumamoto University, 4.Faculty of Advanced Science and Technology Kumamoto University)

[SVC39-P06] Temporal changes of magmas that caused lava dome forming eruptions in Haruna volcano in past 45,000 years

*Yuki Suzuki¹, Yurika Toeda², Shinya Kimura², Rei Tanaka² (1.Department of Earth Sciences, Faculty of Education and Integrated Arts of Sciences, Waseda University, 2.Department of Earth Sciences, School of Education , Waseda University)

[SVC39-P07] Pre-eruptive processes of Goshikidake pyroclastic rocks unit 4-5 deposits, Zao volcano, Japan: Zoning profiles of orthopyroxene phenocrysts

*Motohiro Sato¹, Yuki Nishi¹, Masao Ban¹ (1.Yamagata University)

[SVC39-P08] Plagioclase-hosted melt inclusions of the 1986 eruption at Izu-Oshima volcano, Japan: Implication for pre-eruptive process

*Ryoya Oida¹, Hidemi Ishibashi², Takahiro Miwa³, Natsumi Hokanishi⁴, ATSUSHI YASUDA⁴ (1.Graduate School of Integrated Science and Technology, 2.Faculty of Science, Shizuoka University, 3.NIED, 4.ERI, University of Tokyo)

[SVC39-P09] Very shallow magma storage depths at Sakurajima Volcano revealed from melt inclusions and plagioclase-melt hygrometer

*Naoki Araya¹, Michihiko Nakamura¹, Satoshi Okumura¹, Atsushi Yasuda², Daisuke Miki³, Masato Iguchi³, Nobuo Geshi⁴ (1.Department of Earth Science, Graduate School of Science, Tohoku UniversityUniversity, 2.Earthquake Research Institute, University of Tokyo, 3.Sakurajima Volcano Research Center, Disaster Prevention Research Institute, Kyoto University, 4.Geological Survey of Japan, National Institute of Advanced Industrial Science and Technology)

[SVC39-P10] Preeruptive magmatic process inferred from compositional zoning of pyroxenes: In the case of Sakurajima volcano, Japan.

*Akiko Matsumoto¹, Mitsuhiro Nakagawa¹, Mizuho Amma-Miyasaka¹, Masato Iguchi² (1.Graduate School of Science, Hokkaido University, 2.Disaster Prevention Research institute, Kyoto University)

[SVC39-P11] Magmatic conditions prior to the 2000 eruption of Usu volcano, Japan

Satoka Ohnishi¹, *Akihiko Tomiya¹ (1.National Institute of Advanced Industrial Science and Technology)

[SVC39-P12] MAGMA GENESIS OF SLAMET VOLCANO, CENTRAL JAVA, INDONESIA

*Yogi Adi Prasetya¹, Atsushi Toramaru¹, Tomoharu Miyamoto¹ (1.Graduate school of science, Department Earth and Planetary Science Kyushu University Nishi-ku, 744, Motooka, Fukuoka 819-0395, Japan)

[SVC39-P13] Pre-eruptive process of the 1991-1995 eruption at Unzen volcano,Japan : constraints from amphibole phenocrysts

*Kurumi Iwahashi¹, Hidemi Ishibashi², Natsumi Hokanishi¹, ATSUSHI YASUDA¹ (1.Earthquake Research Institute,University of Tokyo, 2.Shizuoka University)

[SVC39-P14] A new formulation of viscosity-included bubble nucleation rate in ascending magmas and re-estimation of bubble number density

*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)

[SVC39-P15] Permeability measurements of heated and unheated ash erupted from Aso Volcano

*Atsuko Namiki¹, Yukie Tanaka¹, Tadashi Yokoyama¹ (1.Graduate School of Integrated Arts and Sciences, Hiroshima University)

[SVC39-P16] STRATIGRAPHY RENEWAL, MAGMA CHAMBER STRATIFICATION, AND CONDUIT PROCESS OF 1815 TAMBORA ERUPTION

*Indranova Suhendro¹, Atsushi Toramaru¹, Yasuo Miyabuchi², Tomoharu Miyamoto¹ (1.Department of Earth and Planetary Sciences, Graduate School of Sciences, Kyushu University, Nishiku, 744, Motooka, Fukuoka 819-0395, Japan, 2.Faculty of Advanced Science and Technology, Kumamoto University, Kurokami 2-40-1, Chuo-ku, Kumamoto 860-8555, Japan)

[SVC39-P17] Duration-amplitude distribution of volcanic tremor at Erebus volcano, Antarctica

*Mei Astrid Ardiani¹, Konstantinos I. Konstantinou¹ (1.Department of Earth Sciences, National Central University, Taiwan)

Session information