09:00 〜 09:15
*高橋 菜緒子1、辻森 樹1,2、鎌田 誠司1,3、中村 美千彦1 (1.東北大学大学院理学研究科地学専攻、2.東北大学東北アジア研究センター、3.東北大学学際科学フロンティア研究所)
![](https://confit-sfs.atlas.jp/customer/jpgu2021/web/OSPA.png)
[E] 口頭発表
セッション記号 S (固体地球科学) » S-IT 地球内部科学・地球惑星テクトニクス
2021年6月5日(土) 09:00 〜 10:30 Ch.23 (Zoom会場23)
コンビーナ:大谷 栄治(東北大学大学院理学研究科地学専攻)、北 佐枝子(建築研究所)、中村 美千彦(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)、Mysen Bjorn(Geophysical Laboratory, Carnegie Inst. Washington)、座長:Bjorn Mysen(Geophysical Laboratory, Carnegie Inst. Washington)、中村 美千彦(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)
The mass transfer depends on properties of the Earth's materials and geodynamic processes including cold slab subduction and magmatism due to hot plume activity. The mass transfer processes are imaged by geophysical observations such as seismic tomography and electrical conductivity profiles. One of the most important processes to transport volatiles is the slab subduction. The degree of hydration and dehydration in the slab is essential to evaluate amounts of volatiles transported into the deep mantle. Hydration and dehydration in the slab directly related to slab earthquakes, deformation of the slabs, and the arc magmatism. The fate of the fluid dehydrated in the deep slab is also a debated issue since permeability at the depth may be small, and the fluid might be trapped in the slabs and transported in the deep earth's interior at that depths without escaping to the mantle wedge. Recent seismic tomographic studies of the slab revealed direct observations of hydration and dehydration sites in the slabs. There exists growing evidence for alteration and hydration of the old lithosphere due to fracturing and Putit spot volcanisms which affect the volatile transport into the deep mantle due to slab subduction. The mass transfer to the surface can also be observed as the volcanic eruption in which phase separation of magma and fluid, and crystallization during the magma ascent controls the type of eruptions. The proposed session will focus on those phenomena including laboratory experiments, numerical modeling, and geophysical and geochemical observations including physical and chemical properties of magma and fluid, and geophysical imaging of various scales including seismic tomography of the descending slabs, and monitoring of near surface processes of volcanic eruptions. Contributions to any of these subjects are encouraged. We also encourage papers stimulating an interdisciplinary collaboration relating to establishment of the SEDI-Japan community.
09:00 〜 09:15
*高橋 菜緒子1、辻森 樹1,2、鎌田 誠司1,3、中村 美千彦1 (1.東北大学大学院理学研究科地学専攻、2.東北大学東北アジア研究センター、3.東北大学学際科学フロンティア研究所)
09:15 〜 09:30
*Lisa Eberhard1、Philipp Eichheimer1、Marcel Thielmann1、Michihiko Nakamura2、Gregor Golabek1、Dan Frost1 (1.Bayerisches Geoinstitut, University of Bayreuth, Germany、2.Departement of Earth Science, Tohoku University, Japan)
09:30 〜 09:45
*藤田 和果奈1、中村 美千彦1、上杉 健太郎2 (1.東北大学大学院理学研究科、2.放射光利用研究基盤センター)
09:45 〜 10:00
*Diana Mindaleva1、Masaoki Uno1、Atsushi Okamoto1、Noriyoshi Tsuchiya1 (1.Graduate school of environmental studies, Tohoku University)
10:00 〜 10:15
*椎名 高裕1、勝俣 啓2、蓬田 清2、加藤 愛太郎3 (1.産業技術総合研究所、2.北海道大学理学研究院、3.東京大学地震研究所)
10:15 〜 10:30
*Chao Liu1、Takashi Yoshino1 (1.Institute for Planetary Materials, Okayama University)