セッション概要

固体地球科学(S) セッション小記号 固体地球科学複合領域・一般(CG) セッションID S-CG19 タイトル 和文 Hydrogen in the Earth's interior from the crust to the core 英文 Hydrogen in the Earth's interior from the crust to the core タイトル短縮名 和文 Hydrogen in the Earth's interior 英文 Hydrogen in the Earth's interior 代表コンビーナ 氏名 和文 Mysen Bjorn 英文 Bjorn Mysen 所属 和文 Geophysical Laboratory, Carnegie Inst. Washington 英文 Geophysical Laboratory, Carnegie Inst. Washington 共同コンビーナ 1 氏名 和文 Eiji Ohtani 英文 Eiji Ohtani 所属 和文 Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University 英文 Department of Earth and Planetary Materials Science, Graduate School of Science, Tohoku University 共同コンビーナ 2 氏名 和文 Toru Inoue 英文 Toru Inoue 所属 和文 Geodynamics Research Center, Ehime University 英文 Geodynamics Research Center, Ehime University 国際セッション開催希望 国際セッションとしての開催を希望する 発表主要言語 英語 スコープ 和文 Hydrogen-rich volatiles are critical partners of the dynamic Earth. They play a central role throughout the Earth's interior from shallow hydrothermal systems in oceanic and subduction zone settings, in zones of mantle melting, at the fluid-enriched slab/upper mantle interface, in the mantle transition zone and lower mantle to the core-mantle boundary, and the Earth's core. This session will focus on how hydrogen-rich volatiles affect the geochemistry, mineralogy, and geophysics of the Earth's interior through natural observations, laboratory experiments, and numerical modeling. H2O dominates in most settings in the present Earth. H2 is found in shallow hydrothermal environments resulting from alteration of ultramafic rocks. Molecular H2 and hydrogen-bearing reduced nitrogen and carbon species (i.e, methane and ammonia) can be dominant in the deep mantle. Hydrides are candidates for core components. Water, H2, and CH4 were the principal species in the silicate Earth during the first few million years of its history. Hydrogen-containing fluids, melts, and minerals affect mineralogy, phase relations, and numerous other physical and chemical properties and processes in the Earth's interior. Characterization of these processes is accomplished by combining observation, experiment and modeling. To this end, this session will include discussion of (i)How volatiles control the Earth's dynamic processes including recycling and mass transfer processes, (ii) Stability relations, chemical and physical properties of hydrous and hydride crystalline and molten phases and application of such information to geophysical properties, including seismic behavior, of the Earth's interior, (iii) Hydrogen solubility in oxides and metals at deep earth interior conditions and its effect on mantle rheology and equation-of-state, and (iv) Hydrogen and melt crystallization and element distribution and redistribution in the silicate Earth. 英文 Hydrogen-rich volatiles are critical partners of the dynamic Earth. They play a central role throughout the Earth's interior from shallow hydrothermal systems in oceanic and subduction zone settings, in zones of mantle melting, at the fluid-enriched slab/upper mantle interface, in the mantle transition zone and lower mantle to the core-mantle boundary, and the Earth's core. This session will focus on how hydrogen-rich volatiles affect the geochemistry, mineralogy, and geophysics of the Earth's interior through natural observations, laboratory experiments, and numerical modeling. H2O dominates in most settings in the present Earth. H2 is found in shallow hydrothermal environments resulting from alteration of ultramafic rocks. Molecular H2 and hydrogen-bearing reduced nitrogen and carbon species (i.e, methane and ammonia) can be dominant in the deep mantle. Hydrides are candidates for core components. Water, H2, and CH4 were the principal species in the silicate Earth during the first few million years of its history. Hydrogen-containing fluids, melts, and minerals affect mineralogy, phase relations, and numerous other physical and chemical properties and processes in the Earth's interior. Characterization of these processes is accomplished by combining observation, experiment and modeling. To this end, this session will include discussion of (i)How volatiles control the Earth's dynamic processes including recycling and mass transfer processes, (ii) Stability relations, chemical and physical properties of hydrous and hydride crystalline and molten phases and application of such information to geophysical properties, including seismic behavior, of the Earth's interior, (iii) Hydrogen solubility in oxides and metals at deep earth interior conditions and its effect on mantle rheology and equation-of-state, and (iv) Hydrogen and melt crystallization and element distribution and redistribution in the silicate Earth. 発表方法希望 口頭および（または）ポスターセッション 招待講演 Jie Li (University of Michigan) Hugh O'Neill (Australian National University) Charles LELOSQ (Australian National University) Razvan Caracas (Ecole Normale Superieure, Lyon)