Yoko Ohtomo

Profile Information

Affiliation: Associate Professor, Faculty of Engineering Division of Solid Waste, Resources and Geoenvironmental Engineering, Hokkaido University

Degree: Ph.D.(Jun, 2013, Tohoku University. Japan)

Researcher number: 80612902
J-GLOBAL ID: 201301058051492411
researchmap Member ID: B000234615

Research Interests

Research Areas

Research History

Apr, 2024 - Present

Associate Professor, Faculty of Engineering Division of Solid Waste, Resources and Geoenvironmental Engineering, Resource Management laboratory, Hokkaido University
Dec, 2022 - Mar, 2024

Assistant Professor, Resource Management Laboratory, Faculty of Engineering Division of Solid Waste, Resources and Geoenvironmental Engineering, Hokkaido University
Apr, 2022 - Nov, 2022

(Invited faculty), Environmental Geology Laboratory, Faculty of Engineering Division of Solid Waste, Resources and Geoenvironmental Engineering, Hokkaido University
Nov, 2017 - Mar, 2022

Assistant Professor, Division of Sustainable Resources Engineering, Cooperative Program for Resources Engineering, Faculty of engineering, Hokkaido University
Apr, 2015 - Oct, 2017

Postdoctral fellow (SPD, JSPS), Faculty of engineering, Hokkaido University
Apr, 2011 - Mar, 2015

Post-doctoral researcher, Kochi Institute for Core Sample Research, JAMSTEC

Education

- Mar, 2011

Division of Earth and Planetary Materials Science, Graduate School of Science,, Tohoku University, Japan

Committee Memberships

Oct, 2018 - Present

幹事, 資源・素材学会北海道支部

Awards

May, 2016

第27回山下太郎学術研究奨励賞, 約38億年前初期太古代岩石中に残された最古の生命の痕跡の発見, 一般財団法人山下太郎顕彰育英会

大友陽子

Papers

Integrated spectral image registration protocol for enhanced land pollution assessment and management: bridging satellite and drone data for high-resolution mapping

Natsuo Okada, Hisatoshi Toriya, Angesom Gebretsadik, Takahiko Arima, Yoko Ohtomo, Youhei Kawamura

Journal of Material Cycles and Waste Management, Oct 4, 2024 Peer-reviewed
APiS (AI powered intelligence spectrum analyser): hyperspectral imaging machine learning analyser app for mineral processing

Natsuo Okada, Narihiro Owada, Kaito Takizawa, Brian Bino Sinaice, Okhala Muacanhia, Angesom Gebretsadik, Shunki Tanaka, Kosei Aikawa, Ilhwan Park, Mayumi Ito …

International Journal of Mining, Reclamation and Environment, 1-27, Oct 2, 2024 Peer-reviewed
An AI-Based Approach for Developing a Recommendation System for Underground Mining Methods Pre-Selection

Elsa Pansilvania Andre Manjate, Natsuo Okada, Yoko Ohtomo, Tsuyoshi Adachi, Bernardo Miguel Bene, Takahiko Arima, Youhei Kawamura

Mining, 4(4) 747-765, Oct 2, 2024 Peer-reviewed
Primary Fe isotope signatures record oxidative precipitation in 3.2 Ga ferruginous siliciclastic sedimentary rocks deposited in a shallow ocean environment

Ryohei Suzumeji, Tsubasa Otake, Daizo Yamauchi, Yoko Ohtomo, Takeshi Kakegawa, Christoph Heubeck, Shin-ichi Yamasaki, Tsutomu Sato

Precambrian Research, 413 107574-107574, Oct, 2024 Peer-reviewed
Advanced mineralogical classification and concentration estimation in mining with MATLAB-powered hyper-spectral imaging and machine learning

Natsuo Okada, Brian Bino Sinaice, Jaewon Kim, Hiromasa Nozaki, Kaito Takizawa, Narihiro Owada, Yoko Ohtomo, Youhei Kawamura

International Journal of Mining, Reclamation and Environment, 1-21, Jun 6, 2024 Peer-reviewed
Optimizing multi-spectral ore sorting incorporating wavelength selection utilizing neighborhood component analysis for effective arsenic mineral detection

Natsuo Okada, Hiromasa Nozaki, Shinichiro Nakamura, Elsa Pansilvania Andre Manjate, Angesom Gebretsadik, Yoko Ohtomo, Takahiko Arima, Youhei Kawamura

Scientific Reports, 14(1), May 21, 2024 Peer-reviewed
Enhancing rock fragmentation assessment in mine blasting through machine learning algorithms: a practical approach

Angesom Gebretsadik, Rahul Kumar, Yewuhalashet Fissha, Yemane Kide, Natsuo Okada, Hajime Ikeda, Arvind Kumar Mishra, Danial Jahed Armaghani, Yoko Ohtomo, Youhei Kawamura

Discover Applied Sciences, 6(5), Apr 25, 2024 Peer-reviewed
Development of Wide-Area Mineral Identification System Using Multispectral Camera Mounted on Drone for Beach Placer Deposits

Hiromasa Nozaki, Natsuo Okada, Brian Bino Sinaice, Yoko Otomo, Youhei Kawamura

Proceedings of the Second International Conference on Resources and Technology (RESAT 2023), 214-232, Dec 29, 2023 Peer-reviewed
Applying nonnegative matrix factorization for underground mining method selection based on mining projects' historical data.

Elsa Pansilvania Andre MANJATE, Yoko OHTOMO, Takahiko ARIMA, Tsuyoshi ADACHI, Bernardo Miguel BENE, Youhei KAWAMURA

Int. J. Soc. Mater. Eng. Resour., 626, Oct, 2023 Peer-reviewed
Low-Temperature Hydrothermal Synthesis of Chromian Spinel from Fe-Cr Hydroxides Using a Flow-Through Reactor

Ohtomo, Y, Yang, J, Nishikata, M, Kawamoto, D, Kimura, Y, Otake, T, Sato, T

Minerals, 12(1110) 1110-1110, Aug, 2022 Peer-reviewedLead author
Seasonal effects of natural attenuation on drainage contamination from artisanal gold mining, Cambodia: Implication for passive treatment

Sereyroith Tum, Kanako Toda, Tatsuya Matsui, Ryosuke Kikuchi, Sitha Kong, Panha Meas, Unsovath Ear, Yoko Ohtomo, Tsubasa Otake, Tsutomu Sato

Science of The Total Environment, 806 150398-150398, Feb, 2022 Peer-reviewed
地球表層環境における鉄の濃集と鉄鉱床の形成

大竹翼, 大友陽子

資源地質, 71(2) 57-73, 2021 Peer-reviewed
Magmatic-Hydrothermal Processes Associated with Rare Earth Element Enrichment in the Kangankunde Carbonatite Complex, Malawi

Frances Chikanda, Tsubasa Otake, Yoko Ohtomo, Akane Ito, Takaomi D. Yokoyama, Tsutomu Sato

Minerals, 9(7) 442-442, Jul 18, 2019 Peer-reviewed
Deep-biosphere methane production stimulated by geofluids in the Nankai accretionary complex.

Akira Ijiri, Fumio Inagaki, Yusuke Kubo, Rishi R Adhikari, Shohei Hattori, Tatsuhiko Hoshino, Hiroyuki Imachi, Shinsuke Kawagucci, Yuki Morono, Yoko Ohtomo …

Science advances, 4(6) eaao4631, Jun, 2018 Peer-reviewed
Data report: water activity of the deep coal-bearing basin off Shimokita from IODP Expedition 337

Tanikawa, W, Ohtomo, Y, Snyder, G, Morono, Y, Kubo, Y, Iijima, Y, Noguchi, T, Hinrichs, K.-U, Inagaki, F

Proceedings of the Integrated Ocean Drilling Program, 337, 2018 Peer-reviewed
Microscopic observations of chromian spinel synthesized in a low temperature hydrothermal environment

Nishikata Miu, Ohtomo Yoko, Otake Tsubasa, Kimura Yuki, Kawamoto Daisuke, Sato Tsutomu

Abstracts of Annual Meeting of the Geochemical Society of Japan, 64 310-310, 2017
Microstructure and geochemistry of organic matters in banded iron formations, Moodies Group, Barberton Green stone Belt, South Africa

Nakajima Ryo, Ohtomo Yoko, Otake Tsubasa, Kakegawa Takeshi, Sato Tsutomu

Abstracts of Annual Meeting of the Geochemical Society of Japan, 64 308-308, 2017
Micro to nanoscale observations of carbonaceous matters in Archaean sedimentary rocks : Examples of > 3.7 Ga Isua Supracrustal Belt and 3.2 Ga banded iron formations, Moodies Group, Barberton Greensto

Ohtomo Yoko, Nakajima Ryo, Otake Tsubasa, Kakegawa Takeshi

Abstracts of Annual Meeting of the Geochemical Society of Japan, 64 166-166, 2017
Occurrence of Tourmaline in Metasedimentary Rocks of the Isua Supracrustal Belt, Greenland: Implications for Ribose Stabilization in Hadean Marine Sediments

Shinpei Mishima, Yoko Ohtomo, Takeshi Kakegawa

ORIGINS OF LIFE AND EVOLUTION OF BIOSPHERES, 46(2-3) 247-271, Jun, 2016 Peer-reviewed
Recent progress in understanding of early earth biosphere

Ohtomo Yoko

Chikyukagaku, 50(3) 177-186, 2016 Peer-reviewed

Misc.

CHIME dating of monazite in graphitic schist, Isua Supracrustal Belt, Greenland

Yoko Ohtomo, Takenori Kato

Nagoya University Bulletin of Chronological Research, (1) 63-65, Mar, 2017
水分活性が海底下微生物活動に与える影響-IODP exp.337下北八戸沖堆積盆地掘削コア試料を用いた考察-

谷川亘, 大友陽子, 諸野祐樹, SNYDER Glen, 久保雄介, 飯島慈裕, KAI-UWE Hinrichs, 稲垣史生

日本地球惑星科学連合大会予稿集(Web), 2016, 2016
CCS現場条件を再現するリアクターシステムの開発及びシステムを利用したCO₂資源化菌の培養実験

大友陽子, 井尻暁, 堤正純, 井町寛之, 浦本豪一郎, 星野辰彦, 諸野祐樹, 酒井早苗, 斉藤由美, 谷川亘 …

資源・素材学会北海道支部春季講演会講演要旨集, 2015, 2015
西グリーンランド・イスア表成岩帯におけるグラファイトの成因と生命の痕跡

大友陽子, 掛川武, 石田章純

日本地球化学会年会講演要旨集, 60th, 2013

Books and Other Publications

生命起源の事典

生命の起原および進化学会, 薮田ひかる, 川村邦男, 赤沼哲史, 木賀大介, 根本直人, 古川善博, 横堀伸一 (Role: Contributor, 第2章生き物の仕組みと変遷［環境と生物］地球太古の生命の痕跡 I：炭素質物質)

朝倉書店, Apr 17, 2024 (ISBN: 9784254160789)
地球生命誕生の謎カラー図解アストロバイオロジー

M・ガルゴー, H・マーティン, P, ロペス=ガルシア, T・モンメルル, R・パスカル著, 薮田ひかる監訳 (Role: Supervisor (editorial), 第6章編訳協力)

西村書店, Jun, 2021
季刊資源と素材 2021 [春号] Vol.6（2021）No.2

Apr, 2021
理系女子のライフプランあんな生き方・こんな生き方研究・結婚・出産みんなどうしてる?

丸山美帆子, 長濱裕美, 大隅典子 (Role: Contributor, 体験談及びコラム)

Jul, 2018
環境と微生物の事典

大友陽子 (Role: Contributor, コラム「世界最古の微生物化石」)

朝倉書店, Jul, 2014

Presentations

環境調和型鉱山開発に向けた地質学と情報学の融合

大友陽子

工学アカデミー北海道支部第1回研究発表会, Jan 21, 2025 Invited
資源の安定的な確保に向けたアジア・アフリカにおける共同研究の紹介

大友陽子

令和6年度大学学部説明会, Nov 6, 2024
Formation process of carbonate minerals in iron formations deposited in a shallow ocean 3.2 billion years ago

K. Toyata, R. Sugiura, Y. Ohtomo, T. Otake

International Symposium on Chemical and Biological Hazards on One Health: Toward Sustainable Mineral Development and Pollution Monitoring, University of Botswana, Gaborone, Botswana, Oct 9, 2024
湯の花の結晶成長

大友陽子

第43回結晶成長討論会「先端可視化手法と結晶成長素過程」, 登別, 北海道, Sep 13, 2024
Abiotic catalytic reaction dominance in manganese removal from an acid mine water

J. Godirilwe, T. Otake, F. Chikanda, R. Kikuchi, Y. Ohtomo, S. Tomiyama, T. Sato

International Geological Congress 2024, Busan, Korea, Aug 28, 2024
Identification of high-grade Ni laterite ores using hyperspectral imagining and deep learning

K. Furukawa, N. Okada, R. Kikuchi, Y. Ohtomo, T. Otake, Y. Kawamura

International Geological Congress 2024, Busan, Korea, Aug 28, 2024
Passive treatments learnt from natural attenuation processes

Ohtomo, Y.

The Symposium of Passive Treatment for Mine Wastewater. Joint sponsorship of JICA and Ministry of Mines and Energy, Cambodia. Kizuna follow-up symposium, Phnom Penh, Cambodia, Apr 29, 2024 Invited
Fe-silicate and -carbonate formations at C-steel-compacted bentonite interface hinders buffer degradation in high-level radioactive waste disposal.

Kikuchi, R, Fujimura, T, Sato, T, Otake, T, Ohtomo, Y, Goto, T, Suzuki, S, Taniguchi, N, Suzuki, H

Water-Rock Interaction WRI-17, Sendai, Miyagi, Japan, Aug, 2023
Geochemical signatures recorded by trace element compositions in magnetite in Archean Banded Iron Formations

Matsukawa, H, Otake, T, Ohtomo, Y, Kon, Y, Sato, T, Kakegawa, T

Water-Rock Interaction WRI-17, Sendai, Miyagi, Japan, Aug, 2023
Mechanism of manganese oxidation and removal from acid mine drainage wastewater

Godirilwe, G. J, Otake, T, Tomiyama, S, Chikanda, F, Ohtomo, Y, Sato, T

Water-Rock Interaction WRI-17, Sendai, Miyagi, Japan, Aug, 2023
Development of a Different Altitude Spectral Image Registration Protocol Utilizing Digital Twin.

Okada, N, Toriya, H, Arima, T, Ohtomo, Y, Shigemi, T, Rasoanindriana, A, Nozaki, H, Nakamura, S, Kawamura, Y

Water-Rock Interaction WRI-17, Sendai, Miyagi, Japan, Aug, 2023
3.2 Ga shallow ocean environment recorded in banded iron formation by chromium concentration, Moodies Group, Barberton Greenstone Belt, South Africa.

Ohtomo, Y, Matsukawa, H, Nagashima, Y, Otake, T, Kakegawa, T, Sato, T

Water-Rock Interaction WRI-17, Aug, 2023
Fe and Mg isotope fractionations in ferruginous sedimentary rocks from the ~3.2 Ga Moodies Group, Barberton Greenstone Belt, South Africa.

Otake, T, Sugiura, R, Shin, K, Ohtomo, Y, Kakegawa, T, Sato, T

Goldschmidt Conference, Lyon, France, Jul 13, 2023
Transparent carbon films containing graphene in 3.2 Ga sedimentary rocks in the Moodies group, Barberton Greenstone Belt, South Africa.

Ohtomo, Y, Otake, T, Kakegawa, T, Sato, T

Goldschmidt Conference, Lyon, France, Jul 10, 2023
Development of Wide-Area Mineral Identification System Using Multispectral Camera Mounted on Drone for Beach Placer Deposits.

Nozaki, H, Okada, N, Sinaice, B. B, Otomo, Y, Kawamura, Y

The Second International Conference on Resources and Technology (RESAT 2023)
低温蛇紋岩化反応における水素生成再現のための地球化学モデリング

菅原あすか, 東野駿太, 大竹翼, 大友陽子, 佐藤努

日本地球化学会第69会年会
Iron precipitation and associated microbial activities in Ainai and Shojin river mine drainages, Japan

Yoko Ohtomo, Tatsuya Matsui, Frances Chikanda, Sereyroith Tum, Tsubasa Otake, Tsutomu Sato

Goldschmidt Conference, 2022, Hawaii
南アフリカ・ムーディーズ層群中の縞状鉄鉱層に産する磁鉄鉱の微量元素組成

松川春樹, 大友陽子, 大竹翼, 昆慶明, 佐藤努, 掛川武

資源地質学会第71回年会学術講演会, Jun 30, 2022
Iron precipitation and associated microbial activities in acid mine drainages of Ainai and Shojin river mine

Yoko Ohtomo, Tatsuya Matsui, Frances Chikanda, Sereyroith Tum, Tsubasa Otake, Tsutomu Sato

Jun 2, 2022
Geochemical behavior of Fe and Mg in the Moodies Banded Iron Formations, Barberton Greenstone Belt, South Africa

Ryohei Sugiura, Tsubasa Otake, Yoko Ohtomo, Tsutomu Sato, Ki-Cheol Shin

Jun 2, 2022

Teaching Experience

Apr, 2023 - Mar, 2024

インターンシップ
Apr, 2023 - Mar, 2024

環境化学
Apr, 2019 - Aug, 2019

資源循環デザイン (北海道大学工学部資源循環システムコース)
国際人材交流セミナー (北海道大学大学院工学院共同資源工学専攻)
海外インターンシップ (北海道大学工学部資源循環システムコース, 大学院工学院資源循環システム部門)
「地球科学」地球の調べ方I (北海道大学工学部)

Professional Memberships

Jan, 2023 - Present

資源地質学会
Oct, 2018 - Present

一般社団法人資源・素材学会
2011 - Present

American Geophysical Union
THE GEOCHEMICAL SOCIETY OF JAPAN
JAPAN GEOSCIENCE UNION

Research Projects

科学掘削コア試料を用いた32億年前の金属元素循環と酸化還元環境の解明

科学研究費助成事業, 基盤研究(A)分担, 日本学術振興会, Apr, 2024 - Mar, 2028

大竹翼
休廃止鉱山環境を活用した岩石風化促進による二酸化炭素の鉱物固定

科学研究費助成事業, 基盤研究(B), 日本学術振興会, Apr, 2024 - Mar, 2027

大友陽子
モンゴルのリチウム鉱石を対象とした次世代型鉱山開発モデルの提案

科学研究費補助金, 二国間交流事業オープンパートナーシップ共同研究, 日本学術振興会, Apr, 2024 - Mar, 2026
Understanding biosphere-hydrosphere-atmosphere-lithosphere interactions 3.2 billion years ago with an international continental drilling program

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (A), Japan Society for the Promotion of Science, Apr, 2020 - Mar, 2024
Constrains on timings of cyanobacterial and eukaryotic evolutions based on innovative biomarker analyses

Grants-in-Aid for Scientific Research, Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2019 - Mar, 2023

Sugitani Kenichiro
Microbial ecosystem involved in the genesis of banded iron formation at ca. 3.2 Ga

Grants-in-Aid for Scientific Research, Grant-in-Aid for Early-Career Scientists, Japan Society for the Promotion of Science, Apr, 2019 - Mar, 2023

Ohtomo Yoko
秋田県相内鉱山坑廃水のパッシブトリートメントにおける微生物学的プロセスの理解

試験研究助成金, 日本鉱業振興会, Apr, 2019 - Mar, 2021

大友陽子
一般共同研究

名古屋大学宇宙地球環境研究所, Apr, 2017 - Mar, 2018

大友陽子
約３８億年前の地球表層希土類金属元素循環と生命圏の解明

科学研究費助成事業, 特別研究員奨励費, 日本学術振興会, Apr, 2015 - Mar, 2018

大友陽子
グリーンランドにおけるグラファイト層の総合研究:38億年前の生物活動と生息環境

科学研究費助成事業, 特別研究員奨励費, 日本学術振興会, 2006 - 2008

大友陽子
一般共同研究

名古屋大学宇宙地球環境研究所

大友陽子

Media Coverage

Ancient graphene formed 3 billion years before humans discovered it

New Scientist, New Scientist, https://www.newscientist.com/article/2382891-ancient-graphene-formed-3-billion-years-before-humans-discovered-it/, Jul, 2023 Internet
第27回山下太郎学術研究奨励賞受賞.

秋田魁新報, May, 2016
世界最古の生命跡発見・東北大などグリーンランドで

読売新聞, Dec, 2013
38億年前地球最古の生命

河北新報, Dec, 2013
38億年前の生物、グリーンランドで痕跡東北大など

日本経済新聞電子版, Dec, 2013

Profile Information

Research Interests

Research Areas

Research History

Education

Committee Memberships

Awards

Papers

Misc.

Books and Other Publications

Presentations

Teaching Experience

Professional Memberships

Research Projects

Media Coverage

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Coauthors