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Yoshimura Shumpei

Faculty of Science　Earth and Planetary Sciences　Earth and Planetary System ScienceAssociate Professor

Researcher basic information

■ Degree
  • 博士（理学）, 東北大学
■ URL
researchmap URL■ Various IDs
J-Global ID■ Research Keywords and Fields
Research Keyword
  • 揮発性成分
  • マグマ
Research Field
  • Natural Science, Solid earth sciences
■ Educational Organization

Career

■ Career
Career
  • Apr. 2015 - Present
    Hokkaido University, 理学研究院, 助教
  • 2013 - 2015
    Yamagata University, Faculty of Science, 助教
  • 2011 - 2013
    Hokkaido University, 学振研究員（PD）
  • 2010 - 2011
    Tohoku University, 学振研究員（PD）
  • 2009 - 2010
    Tohoku University, 学振研究員（DC2）
Committee Memberships
  • Oct. 2022 - Present
    Journal of Mineralogical and Petrological Sciences, Associate Editor
  • Oct. 2022 - Present
    日本鉱物科学会, 行事委員

Research activity information

■ Awards
  • Sep. 2019, 日本鉱物科学会, 日本鉱物科学会研究奨励賞
    火山噴火現象の実験的・理論的研究
    吉村俊平
  • 2015, 日本火山学会, 研究奨励賞
    火山噴火現象を支配する素過程についての実験的・理論的研究
    吉村 俊平
■ Papers
■ Other Activities and Achievements
  • Fluid compositional distribution in the crust estimated from isochemical potential modelling
    Yoshimura Shumpei, Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences, 2017, 8, 2017
    To understand the controls on the fluid compositional distribution in the crust, a thermodynamic model, which simulates the most stable distribution under pressure and temperature gradients, was established. NaCl solution was used as the representative of the crustal fluid. The model showed that the salinity increases with depth, and the salinity gradient is positively dependent on the temperature gradient. The calculation result was compared with natural salinity distribution of sedimentary fluids, and the calculated profiles are roughly consistent with natural data., Japan Association of Mineralogical Sciences, Japanese
  • Formation of dense lava from vesicular silicic magma
    Yoshimura Shumpei; Nakagawa Mitsuhiro, Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences, 2016, 13, 2016
    Foam collapse is the necessary process for explaining non-explosive silicic eruptions. However, no direct evidence showed that the foam collapse was actually operating in natural magma. We analysed groundmass glass of Mukaiyama rhyolite lava using an FE-EPMA, and observed spatial heterogeneity in the volatile content. We interpret this heterogeneity as reflecting the history of degassing and compaction of magma., Japan Association of Mineralogical Sciences, Japanese
  • S-03 Experimental and theoretical studies on elementary processes of volcanic eruption
    Yoshimura S, Programme and abstracts the Volcanological Society of Japan, 2015, 95, 28 Sep. 2015
    Volcanological Society of Japan, Japanese
  • S-03 Experimental and theoretical studies on elementary processes of volcanic eruption
    Yoshimura S, PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN, 2015, 0, 2015
    特定非営利活動法人 日本火山学会, Japanese
  • Non-volatility of chlorine upon magmatic degassing
    Yoshimura Shumpei, Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences, 2014, 2, 2014
    Chlorine and water contents were determined for pyroclastic vitrophyre fragments from Niijima Mukaiyama volcano and experimentally-vesiculated rhyolitic glass samples. As for the pyroclastic vitrophyre, the water content ranged from 0.5 to 2.4 wt%, whereas the chlorine content was almost constant at 0.13 wt%. For the experimental samples, the water content ranged from 0.15 to 0.61 wt% whereas the chlorine content was constant at 0.15 wt%. These results showed that chlorine behaves as a non-volatile element upon shallow magmatic degassing., Japan Association of Mineralogical Sciences, Japanese
  • Microanalysis of H_2O and CO_2 in glasses using Raman spectroscopy
    YOSHIMURA S; KAGASHIMA S, 日本鉱物科学会年会講演要旨集, 2013, 40, 05 Sep. 2013
    We have developed a new analytical method for H2O and CO2 in silicate glasses by using micro-Raman spectrometry. We analysed H2O- and CO2-bearing basaltic glasses using a Raman spectrometer and an FT-IR, and confirmed linear relationships between peak heights of H2O and CO32- in IR spectra and those in Raman spectra. Therefore, the Raman spectrometry has a potential for quantitative analysis of both H2O and CO2 in glass samples., Japan Association of Mineralogical Sciences, Japanese
  • Carbon isotope fractionation between granitic melt and CO_2-rich fluid
    YOSHIMURA S.; NAKAMURA M.; YURIMOTO H., 日本鉱物科学会年会講演要旨集, 2012, 29, 29, 15 Sep. 2012
    Japanese
  • Carbon isotope fractionation between granitic melt and CO2-rich fluid
    Yoshimura Shumpei; Nakamura Michihiko; Yurimoto Hisayoshi, Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences, 2012, 0, 28, 28, 2012
    The carbon isotopic fractionation between CO2-rich fluid and granitic melt was determined to be Δf-m = +0.8‰ at 1200 °C and 10 kbar. Infrared spectrometry revealed that both CO2 molecule and CO32- are present in this melt. The carbon isotope fractionation is modelled as a linear function of the ratio of CO3-2 to CO2molecule., Japan Association of Mineralogical Sciences, Japanese
  • P73 Formation mechanisms of obsidian layers in a lava flow
    Yoshimura S; Nakamura M, Programme and abstracts the Volcanological Society of Japan, 2011, 02 Oct. 2011
    Volcanological Society of Japan, Japanese
  • Transport mechanism of carbon dioxide in active volcanoes
    YOSHIMURA S; NAKAMURA M, 日本鉱物科学会年会講演要旨集, 2011, 83, 05 Sep. 2011
    Japanese
  • Transport mechanism of carbon dioxide in active volcanoes
    Yoshimura Shumpei; Nakamura Michihiko, Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences, 2011, 0, 81, 81, 2011
    Active volcanoes are the primary source for CO2 emission from the Earth's interior to the atmosphere. CO2 fluxing may be an elementary process of CO2 transport in a magma, but its mechanism has not been understood yet. We modelled the CO2 fluxing as a reactive transport process and compared the calculation result to melt inclusion data of Mt.Etna from literature. We obtained a quantitative understanding for CO2 fluxing such that fluid velocity is > 10-4 m/s and flux is 32 g/m2 s., Japan Association of Mineralogical Sciences, Japanese
  • P73 Formation mechanisms of obsidian layers in a lava flow
    Yoshimura S; Nakamura M, PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN, 2011, 0, 2011
    特定非営利活動法人 日本火山学会, Japanese
  • 2-A07 Experimental study on fracture healing in a magma : implications for repetitive volcanic earthquakes
    Yoshimura Shumpei; Nakamura Michihiko, Programme and abstracts the Volcanological Society of Japan, 2010, 09 Oct. 2010
    Volcanological Society of Japan, Japanese
  • CO_2 gas fluxing in crustal magmatic systems
    YOSHIMURA Shumpei; NAKAMURA Michihiko, 日本鉱物科学会年会講演要旨集, 2010, 23 Sep. 2010
    Japanese
  • 2-A07 Experimental study on fracture healing in a magma : implications for repetitive volcanic earthquakes
    Yoshimura Shumpei; Nakamura Michihiko, PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN, 2010, 0, 2010
    The Volcanological Society of Japan, Japanese
  • 2-A07 Experimental study on fracture healing in a magma : implications for repetitive volcanic earthquakes
    Yoshimura Shumpei; Nakamura Michihiko, PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN, 2010, 0, 2010
    The Volcanological Society of Japan, Japanese
  • CO2 gas fluxing in crustal magmatic systems
    Yoshimura Shumpei; Nakamura Michihiko, Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences, 2010, 0, 10, 10, 2010
    Recent geochemical studies on melt inclusions proposed that crustal magmas often suffer CO2 fluxing, a process in which a mantle-derived CO2-rich fluid flows through, and interacts with, an H2O-rich shallow-stored magma. However, the mechanisms of CO2-rich fluxing are scarcely understood. In order to explore fundamental properties of CO2 fluxing, we constructed a reactive transport model and examined how the volatile composition in the melt and fluid evolve temporally and spatially. The results allowed us to infer the velocity of the CO2-rich fluid flow. For example, in the case of the Etna's magma, in which CO2 fluxing is expected to have occur, we estimated the fluid velocity to be 10-4 m/s., Japan Association of Mineralogical Sciences, Japanese
  • Bubble growth and resorption in a magma upon CO2 fluxing
    Yoshimura Shumpei; Nakamura Michihiko, Abstracts of Annual Meeting of the Geochemical Society of Japan, 57, 0, 8, 8, 2010
    Geochemical studies on melt inclusions proposed that H2O-rich crustal magmas often suffer CO2 fluxing. In order to explore kinetics of H2O-CO2 interaction upon CO2 fluxing, we conducted volatile exchange experiments in an H2O-CO2-rhyolite system. We observed that bubbles pre-existing in an H2O-rich magma may dissolve to shrink as a result of volatile exchange with a CO2-rich fluxing fluid., GEOCHEMICAL SOCIETY OF JAPAN
  • P31 CO_2 gas flushing in a magma : A reactive transport model
    Yoshimura Shumpei; Nakamura Michihiko, Programme and abstracts the Volcanological Society of Japan, 2009, 10 Oct. 2009
    Volcanological Society of Japan, Japanese
  • P31 CO_2 gas flushing in a magma : A reactive transport model
    Yoshimura Shumpei; Nakamura Michihiko, PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN, 2009, 0, 2009
    The Volcanological Society of Japan, Japanese
  • P31 CO_2 gas flushing in a magma : A reactive transport model
    Yoshimura Shumpei; Nakamura Michihiko, PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN, 2009, 0, 2009
    The Volcanological Society of Japan, Japanese
  • B12 Chemical interaction between H_2O-rich bubbles and CO_2-rich fluid
    Yoshimura Shumpei; Nakamura Michihiko, Programme and abstracts the Volcanological Society of Japan, 2008, 10 Oct. 2008
    Volcanological Society of Japan, Japanese
  • B12 Chemical interaction between H2O-rich bubbles and CO2-rich fluid
    Yoshimura Shumpei; Nakamura Michihiko, PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN, 2008, 0, 2008
    The Volcanological Society of Japan, Japanese
  • B12 Chemical interaction between H2O-rich bubbles and CO2-rich fluid
    Yoshimura Shumpei; Nakamura Michihiko, PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN, 2008, 0, 2008
    The Volcanological Society of Japan, Japanese
  • Diffusive dehydration and bubble resorption in vesiculated rhyolitic melts
    YOSHIMURA Shumpei; NAKAMURA Michihiko, 日本鉱物学会・学術講演会,日本岩石鉱物鉱床学会学術講演会講演要旨集, 2007, 22 Sep. 2007
    Japanese
  • Diffusive dehydration and bubble resorption in vesiculated rhyolitic melts
    Yoshimura Shumpei; Nakamura Michihiko, Abstracts for Annual Meeting of Japan Association of Mineralogical Sciences, 2007, 0, 56, 56, 2007
    The mechanisms of open-system degassing are central to an understanding of the non-explosive eruption of silicic magmas. To investigate the behavior of bubbles during the degassing, we performed vesiculation experiments on rhyolitic melts using a semipermeable cell at 1000 °C for a period of 1–288 hours. The run charges showed a zonal structure composed of two regions: a central region within which the bubbles were concentrated (bubble-rich core, BC) and a bubble-free melt region surrounding the BC (bubble-free margin, BFM). With increasing heating duration, the thickness of the BFM increased via dissolution of the outermost bubbles in the BC. We found that diffusive dehydration occurred from the sample surface, and the bubbles were resorbed into the melt. We propose that diffusive dehydration followed by bubble resorption is an important elementary process of open-system degassing, which would occur along the open paths., Japan Association of Mineralogical Sciences, Japanese
■ Books and other publications
  • 自然科学実験
    吉村 俊平, 偏光顕微鏡で覗く岩石と鉱物の世界
    2018, [Contributor]
■ Syllabus
  • マグマ科学概論, 2024年, 修士課程, 理学院
  • マグマ科学特論, 2024年, 修士課程, 理学院
  • 自然史科学特別講義Ⅰ, 2024年, 修士課程, 理学院
  • 自然史科学特別講義Ⅱ, 2024年, 修士課程, 理学院
  • 地質学実習, 2024年, 学士課程, 理学部
  • 地球惑星科学実験Ⅰ, 2024年, 学士課程, 理学部
  • 地球惑星科学実験Ⅳ, 2024年, 学士課程, 理学部
  • 現代地球惑星科学概論１, 2024年, 学士課程, 理学部
  • 火山学, 2024年, 学士課程, 理学部
  • 地球惑星物質科学実習, 2024年, 学士課程, 理学部