固体地球科学(S)
セッション小記号火山学(VC)
セッションIDS-VC43
タイトル和文Magma crystallization, fragmentation, and their roles on volcanic eruption
英文Magma crystallization, fragmentation, and their roles on volcanic eruption
タイトル短縮名和文Magma crystallization and fragmentation
英文Magma crystallization and fragmentation
代表コンビーナ氏名和文三輪 学央
英文Takahiro Miwa
所属和文防災科学技術研究所
英文National research institute for earth science and disaster prevention
共同コンビーナ 1氏名和文奥村 聡
英文Satoshi Okumura
所属和文東北大学大学院理学研究科地学専攻地球惑星物質科学講座
英文Division of Earth and Planetary Materials Science, Department of Earth Science, Graduate School of Science, Tohoku University
共同コンビーナ 2氏名和文Pranabendu Moitra
英文Pranabendu Moitra
所属和文University of Arizona
英文University of Arizona
発表言語E
スコープ和文Crystallization of magma during magma ascent in the conduit has a large impact on the dynamics of volcanic eruptions. Magma viscosity and brittleness increase with crystallization. This change of rheological properties may cause brittle fragmentation of low-viscosity basaltic magma during highly explosive subplinian and Plinian eruptions. On the other hand, crystallization may form rigid crystal frameworks, causing efficient outgassing through the interaction between the crystal frameworks and growing gas bubbles in ascending magma, resulting in effusive eruptions. This session aims to integrate information of elementary processes to develop physical models of multiphase magma ascent and eruption. In this view, we welcome innovative and multidisciplinary contributions from experimental volcanologists, numerical modelers, petrologists, and also geophysicists who develop and extend techniques to explore crystallization and bubble-crystal interactions, and their effects on fragmentation and outgassing of multiphase magma during effusive and explosive eruptions.
英文Crystallization of magma during magma ascent in the conduit has a large impact on the dynamics of volcanic eruptions. Magma viscosity and brittleness increase with crystallization. This change of rheological properties may cause brittle fragmentation of low-viscosity basaltic magma during highly explosive subplinian and Plinian eruptions. On the other hand, crystallization may form rigid crystal frameworks, causing efficient outgassing through the interaction between the crystal frameworks and growing gas bubbles in ascending magma, resulting in effusive eruptions. This session aims to integrate information of elementary processes to develop physical models of multiphase magma ascent and eruption. In this view, we welcome innovative and multidisciplinary contributions from experimental volcanologists, numerical modelers, petrologists, and also geophysicists who develop and extend techniques to explore crystallization and bubble-crystal interactions, and their effects on fragmentation and outgassing of multiphase magma during effusive and explosive eruptions.
発表方法口頭および（または）ポスターセッション