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J-GLOBAL ID：201901011209524039 Update date: Apr. 21, 2025

Ijiri Akira

イジリアキラ | Ijiri Akira

Affiliation and department：

Research field (3)： Solid earth science , Space and planetary science , Environmental dynamics

Research keywords (4)：安定同位体 , 海洋掘削科学 , 黒田郡 , Geochemistry

Research theme for competitive and other funds (27)：

2024 - 2029 海底泥火山活動が繋ぐ地圏-水圏-生命圏:深部生命・炭素の海洋拡散過程とその影響
2023 - 2027 Exploration of the limits and adaptations of life in subseafloor biosphere
2022 - 2026 Clarification of underwater ruins of Lake Hibara and the volcanic disaster that caused the submergence of the lake
2023 - 2025 メタン・二酸化炭素凝集同位体温度指標を応用した新しい地化学地熱探査手法の開発
2022 - 2025 非晶質シリカの構造特性が酸素安定同位体温度計に与える影響

2022 - 2024 石英脈微小流体包有物の直接化学分析によって解き明かす地震発生帯流体の起源と挙動

2021 - 2024 完新世における東南極トッテン氷河の融解と暖水塊流入の影響評価

2020 - 2024 Challenges to deep sea paleoceanography by establishing oxygen isotope proxy of siliceous sponge spicules

2020 - 2023 熱分解炭化水素の同位体システマチクスを決定する

2020 - 2023 Changes in the environments and biological communities revealed from the sediment core of Uranouchi Inlet Bay, Kochi during Anthropocene

2020 - 2023 Construction of a model for the diffusion and circulation of deep subsurface life and carbon to the ocean via submarine mud volcanism

2019 - 2022 生命の生存限界を探る:海底下高温高圧環境での活動的生命圏の限界と生き残り戦略

2017 - 2022 Paleoclimate dynamics of the Southern Ocean

2018 - 2021 How the world-largest earthquake occurred at the world-hottest ridge subduction zone? A challenge from geothermal prespective.

2018 - 2021 Marine environments recorded in siliceous microfossil skeletons: species-level analysis of isotopic ratios and minor trace elements

2016 - 2021 Investigation of ancient methane seepage in Sakhalin using silica clathrate minerals

2018 - 2020 Investigation of birth and evolutional history of photosynthetic organism by biomarker imaging of Achaean rocks

2017 - 2020 study on the formation and accumulation process of microbial methane by highly sensitive methane clumped isotope analysis

2015 - 2018 Paleoenvironmental reconstruction by imaging mass spectrometry of banded sediment

2014 - 2017 Investigation of subseafloor environments based on methane stable isotopologues

2014 - 2016 Estimation of subsidence records and earthquake damages of Nankai earthquakes from the investigation of structures and objects on the seafloor along the Kochi coastline.

2011 - 2014 Investigation of microbial conversion process of CO2 in marine sediment-a basic study for carbon dioxide capture and storage-

2011 - 2013 Reconstruction of sub-bottom section of geologic methane-seep site - variety of seep activity indicated by fossil chemosynthetic communities

2009 - 2011 Oxygen isotope measurements on silica in marine sediments from the western North Pacific

2009 - 2011 Development of a simple method for oxygen isotope analysis on microgram quantities of biogenic opal

2006 - 2009 Evolution of chemosynthetic communities since the Cretaceous-with special reference to sub-bottom structure of methane-seepage habitats

2007 - 2008 自生炭酸塩岩の同位体分子指標を用いた沈み込み帯の間隙流体移動の長期観測

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Papers (70)：

Haruko Kawaguchi, Masako Hori, Akira Ijiri, Minoru Ikehara. Kinetic oxygen isotopic fractionation evaluated by amorphous silica synthesized at 10-40°C. GEOCHEMICAL JOURNAL. 2025. 59. 1. 26-34
Takami Nobuhara, Hakuichi Koike, Akira Ijiri. Fossil tubeworms from the Middle Miocene Bessho Formation in Matsumoto City, Nagano Prefecture, Central Japan. Fossils. 2024. 115. 53-64
Miho Asada, Mikiya Yamashita, Rina Fukuchi, Toshiyuki Yokota, Tomohiro Toki, Akira Ijiri, Kiichiro Kawamura. Identification of a large mud volcano field in the Hyuga-nada, northern end of the Ryukyu trench, offshore Japan. Frontiers in Earth Science. 2023. 11
Mori Fumiaki, Ijiri Akira, Nishimura Tomoya, Wakamatsu Taisuke, Katsuki Nozomi, Morono Yuki. Cultivation of Piezotolerant and Piezophilic Hyperthermophiles with a Newly Developed Constant High Pressure and Temperature Culturing and Monitoring System. Microbes and Environments. 2023. 38. 6. n/a
Yuki Mitsutome, Ko Agena, Tomohiro Toki, Ke-Han Song, Ryuichi Shinjo, Akira Ijiri. Assessing the activity of mud volcanism using boron isotope ratios in pore water from surface sediments of mud volcanoes off Tanegashima (SW Japan). Frontiers in Marine Science. 2023. 10

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MISC (16)：

山田貫太郎, 土岐知弘, 大塚宏徳, 板木拓也, 村山雅史, 井尻暁. Origin of fluids in surface sediments of submarine mud volcanoes off Hyuga-nada, Tanegashima Island, and Kikaijima Island. 日本地球化学会年会要旨集(Web). 2024. 71st
谷川亘, 谷川亘, 山本裕二, 中村璃子, 多田井修, 山本哲也, 井尻暁, 廣瀬丈洋, 木村淳, 山崎新太郎, et al. 「桧原宿跡」の学術調査-湖底に眠る宿場町と近代日本最大の火山災害の痕跡を探る. Isotope News (Web). 2024. 793
石橋純一郎, 井尻暁. Multi isotope analysis of gas species in geothermal fluids and application to a new geothermometer. 岩谷直治記念財団研究報告書. 2022. 45
稲垣史生, 井尻暁. 海底下の微生物起源ガスとメタンハイドレート(その2). 天然ガス. 2020. 6. 21-30
稲垣史生, 井尻暁. 海底下の微生物起源ガスとメタンハイドレート(その1). 天然ガス. 2020. 5. 18-27

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Patents (1)：

二酸化炭素の再資源化方法

Lectures and oral presentations (31)：

Emission of dissolved organic carbon from submarine mud volcanoes off Kikaijima Island, Tanagashima Island and Hyuga-nada, Japan
(日本地球化学会年会要旨集(Web) 2024)
Origin of fluids in surface sediments of submarine mud volcanoes off Hyuga-nada, Tanegashima Island, and Kikaijima Island.
(日本地球化学会年会要旨集(Web) 2024)
「よこすか」YK23-10S航海報告:潮岬海底谷の潜航調査に基づく南海付加体発達史の更新と大地震セグメント境界の地質学的実態解明
(海と地球のシンポジウム発表課題一覧・要旨集(CD-ROM) 2024)
間隙水および炭化水素ガスの化学・同位体組成から推定される南海トラフ熊野前弧海盆深部の流体移動
(Japan Geoscience Union Meeting 2023 2023)
日本海上越沖の海底深部掘削コアに見る炭酸塩コンクリーションの初期形成過程
(Japan Geoscience Union Meeting 2023 2023)

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Education (3)：

2000 - 2003 Hokkaido University Graduate School of Science Department of Earth and Planetary Sciences
1998 - 2000 Hokkaido University Graduate School of Environmental Earth Science
1993 - 1998 Shinshu University Faculty of Science Department of Geology

Professional career (1)：

博士(理学) (北海道大学)

Work history (8)：

2024/04 - 現在 Kobe University Graduate School of Maritime Sciences
2021/04 - 現在 JAMSTEC
2021/04 - 2024/03 Kobe University Graduate School of Maritime Sciences Associate professor
2014/04 - 2021/03 海洋研究開発機構高知コア研究所主任研究員
2011/04 - 2014/03 海洋研究開発機構高知コア研究所研究員

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Awards (3)：

2017 - PNAS, Cozzareli Prize 2017 Applied Biological, Agricaltual, and Environmental Sciences “Methyl-compound use and slow growth characterize microbial life in 2-km-deep subseafloor coal and shale beds”
2007/05 - Paleo-3 Most Cited Paper 2003-2007 Award Paleoenvironmental changes in the northern area of the East China Sea during the past 42,00 years
2005/07 - 日本古生物学会論文賞北海道中川地域の白亜系蝦夷層群に見つかった異例に保存の良い湧水性化石群集

Association Membership(s) (4)：

地球環境史学会 , THE JAPANESE ASSOCIATION OF ORGANIC GEOCHEMISTS , THE GEOLOGICAL SOCIETY OF JAPAN , THE GEOCHEMICAL SOCIETY OF JAPAN

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