OHBA Tsukasa

写真a

Affiliation

Graduate School of International Resource Sciences  Department of Earth Resource Science 

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Research Interests 【 display / non-display 】

  • petrology

  • geology

  • 地質

  • Volcanology

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Graduating School 【 display / non-display 】

  • 1984.04
    -
    1988.03

    Tohoku University   Faculty of Science   Graduated

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Graduate School 【 display / non-display 】

  • 　
    -
    1993.03

    Tohoku University  Graduate School, Division of Natural Science  Doctor's Course  Completed

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Studying abroad experiences 【 display / non-display 】

  • 2006.09
    -
    2007.08

    Auckland University   visiting researcher

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Campus Career 【 display / non-display 】

  • 2016.04
    -
    Now

    Akita University   Graduate School of International Resource Sciences   Department of Earth Resource Science   Professor  

  • 2014.04
    -
    2016.03

    Akita University   Faculty of International Resource Sciences   Department of International Resource Sciences   Dept. of Earth Resource Science   Professor  

  • 2010.04
    -
    2014.03

    Akita University   Graduate School of Engineering and Resource Science   Department of Earth Science and Technology   Associate Professor  

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Academic Society Affiliations 【 display / non-display 】

  • 2011.06
    -
    Now
     

    Japan

     

    IAVCEI

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Thesis for a degree 【 display / non-display 】

  • Geology and Petrology of Akita Yakeyama and Hachimantai volcanoes

    Tsukasa Ohba 

      1993.03

    Single author

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Research Achievements 【 display / non-display 】

    ◆Original paper【 display / non-display 】

  • Sulfur isotopic variations in the products of the 1895 CE eruption at Zao volcano (NE Japan): Implications for connecting eruption source and syn-eruptive magmatic-hydrothermal processes

    Imura T.

    Journal of Volcanology and Geothermal Research ( Journal of Volcanology and Geothermal Research )  452   2024.08  [Refereed]

    Research paper (journal)   International Co-author

    DOI

  • Geology, chronology, and temporal evolution of basaltic to dacitic magma system in Raung volcano, East Java, Indonesia

    Moktikanana M.L.A.

    Journal of Volcanology and Geothermal Research ( Journal of Volcanology and Geothermal Research )  452   2024.08  [Refereed]

    Research paper (journal)   International Co-author

    DOI

  • Paleomagnetism and paleomagnetic dating to large volcanic bombs: an example from the historical eruption of Azuma–Jododaira volcano, NE Japan

    Hasegawa T.

    Earth, Planets and Space ( Earth, Planets and Space )  75 ( 1 )   2023.12  [Refereed]

    Research paper (journal)   Domestic Co-author

    DOI

  • Magmatic evolution and plumbing system of Gede Salak volcano, Banten, Indonesia

    Muhammad Alfath Salvano Salni, Euis Tintin Yuningsih, Tsukasa Ohba

    Indonesian Journal on Geoscience     2023.12  [Refereed]

    Research paper (journal)   International Co-author

  • Characteristics of ash particles from the maar complex of Lamongan Volcanic Field (LVF), East Java, Indonesia: How textural features and magma composition control ash morphology

    Muhammad Andriansyah Gurusinga,Tsukasa Ohba, Agung Harijoko, andTakashi Hoshide

    Journal Volcanica ( Volcanica )  6 ( 2 ) 415 - 436   2023.11  [Refereed]

    Research paper (journal)   International Co-author

    DOI DOI2

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    ◆University bulletin, Research institution【 display / non-display 】

  • K-Ar Age and Whole-rock Chemical Composition of Volcanic Rock from the Matsu Seamount in the Eastern Marginal Section of the 6ea of Japan off Akita Prefecture

    Atsushi SAKAYORI, Shinji TSUKAWAKI, Tsukasa OHBA and Shintaro HAYASHI

      ( 54 ) 53 - 60   2023.03  [Refereed]

    Research paper (university bulletin, research institution)   Domestic Co-author

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    ◆Other【 display / non-display 】

  • Magma had ejected in 1893 CE eruption (Meiji eruption) at Azuma-Jododaira volcano, Fukushima Prefecture: Inferred from paleomagnetic dating for large volcanic bombs around Tsubakurosawa craters

    Hasegawa Takeshi, Kikuchi Bunta, Shibata Shohei, Imura Takumi, Ban Masao, Tsunematsu Kae, Yamamoto Yuhji, Ohba Tsukasa, Suzuki Kazuma, Tomaru Atsuharu, Kusu Chie, Okada Makoto

    BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN ( The Volcanological Society of Japan )  68 ( 3 ) 189 - 196   2023.09

    DOI CiNii Research

  • Stratigraphy, eruption ages, and chemical compositions of pyroclastic fall deposits by explosive volcanic activities at Akita-Yakeyama Volcano during the last 6,000 years

    Minami Yusuke, Itoh Jun'ichi, Kusano Yuki, Oikawa Teruki, Ohba Tsukasa

    BULLETIN OF THE VOLCANOLOGICAL SOCIETY OF JAPAN ( The Volcanological Society of Japan )  68 ( 2 ) 39 - 57   2023.06

    DOI CiNii Research

  • Volcanic-hydrothermal system inferred from steam-blast eruption ash

    Ohba Tsukasa, Hirata Aoi

    Abstracts of Annual Meeting of the Geochemical Society of Japan ( GEOCHEMICAL SOCIETY OF JAPAN )  69 ( 0 ) 114   2022

    <p>Steam-blast eruptions are classified into three: phreatic, hydrothermal, and ultra-vulcanian. Each eruption type is correlated to the mineralogical characteristic of the volcanic ash. Relatively unaltered lithic fragments and sulfate minerals (anhydrite, gypsum) are abundant in volcanic ash from ultra-vulcanian eruptions. Volcanic ash from hydrothermal eruptions abundantly contains alteration minerals from the alteration zones developed under the volcano, such as the advanced argillic alteration zone. The heating phenomena of phreatic eruptions can be identified by analyzing, e.g., sulfur isotopic compositions of adherent water-soluble components and coarse ash separately.</p>

    DOI CiNii Research

  • Holocene eruptive history and eruption patterns of Chokai volcano elucidated from trench survey

    Ohba Tsukasa, Hayashi Shintaro, Endo Masahiro, Ban Masao, Imura Takumi, Minami Yusuke

    PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN ( The Volcanological Society of Japan )  2022 ( 0 ) 43 - 43   2022

    DOI CiNii Research

  • The magma plumbing system for the bimodal volcanism at ca.30 ka at Iwate volcano

    IKEDA Masamichi, OHBA Tsukasa

    PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN ( The Volcanological Society of Japan )  2022 ( 0 ) 29 - 29   2022

    DOI CiNii Research

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Grant-in-Aid for Scientific Research 【 display / non-display 】

  • Petrological analysis to mitigate unpredictable volcanic hazards: understanding of cryptic magma

    Grant-in-Aid for Scientific Research(C)

    Project Year： 2020.04  -  2023.03 

  • Grant-in-Aid for Scientific Research(C)

    Project Year： 2017.04  -  2020.03 

  • Grant-in-Aid for Scientific Research(C)

    Project Year： 2015.04  -  2019.03 

  • Grant-in-Aid for Scientific Research(C)

    Project Year： 2014.04  -  2017.03 

  • Grant-in-Aid for Scientific Research(C)

    Project Year： 2009.04  -  2012.03 

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Presentations 【 display / non-display 】

  • 火山灰に含まれる硫黄鉱物の存在量と同位体組成の経時変化 - 阿蘇火山 2021 年 10 月噴火火山灰試料の例 -

    平田　碧・大場　司・井村　匠・ 高橋亮平・Pearlyn Cabarubias Manalo・長井雅史・佐藤比奈子・池田柾道

    日本火山学会  (鹿児島)  2023.10  -  2023.10  日本火山学会

  • 西岩手カルデラ中央火口丘形成期のマグマの分化作用

    池田柾道・大場　司

    日本火山学会  (鹿児島)  2023.10  -  2023.10  日本火山学会

  • Characteristics and origins of erupted volcanic ash particles: Insights from maar complex deposits at Lamongan Volcanic Field, East Java, Indonesia

    Andriansyah Gurusinga, Tsukasa Ohba

    IAVCEI  (Rotorua)  2023.02  -  2023.02 

  • Characteristics of pyroclastic ash fall deposits: the pre-historical explosive eruption of Ciremai volcano, West Java, Indonesia

    Wildan Nur Hamzah, Tsukasa Ohba, Andriansyah Gurusinga, Jananda N. Indriyanto, Mirzam Abdurrachman, Idham A. Kurniawan

    IAVCEI  (Rotorua)  2023.02  -  2023.02 

  • Batik lava: an unusual surface structure on a latitic lava flow

    T Ohba, WN Hamuzah, MLA Moktikanana, MS Adiva, YA Prasetya, M. Abdurrachman

    PROGRAMME AND ABSTRACTS THE VOLCANOLOGICAL SOCIETY OF JAPAN  2023  -  2023  The Volcanological Society of Japan

    DOI

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Teaching Experience 【 display / non-display 】

  • 2022.11
    　
    　
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Academic Activity 【 display / non-display 】

  • 2018.04
    -
    2018.09

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Lifelong learning support results 【 display / non-display 】

  • Lecture at Bandung Institute of Technology

    Bandung Institute of Technology 

    2019.10
    　
    　

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