Rchr
J-GLOBAL ID：200901013971118582
Update date: Feb. 02, 2024
Obata Hajime
オバタ ハジメ | Obata Hajime
Affiliation and department：
Job title：
Associate Professor
Homepage URL (1)：
http://co.aori.u-tokyo.ac.jp/micg/Obata.html
Research field (3)：
Analytical chemistry
, Space and planetary science
, Environmental dynamics
Research keywords (6)：
分析化学
, 地球化学
, 海洋化学
, Analytical Chemistry
, Chemical Oceanography
, Marine Chemistry
Research theme for competitive and other funds (26)：
- 2022 - 2027 Research promotion for Macroscale Coastal Oceanography
- 2022 - 2027 Material exchange between coastal area and the subarctic North Pacific and biological production
- 2022 - 2026 Study of the internal cycles of trace metals in the western North Pacific by using ship observation and modeling
- 2021 - 2026 Formation of water nutritional property including iron and silicate at the termination of global ocean conveyor belt
- 2021 - 2024 Mechanistic insights of microbial exudates in complexation and redox kinetics of iron and copper in aquatic environments
- 2021 - 2024 水圏環境における鉄と銅の錯生成および酸化還元に対する微生物滲出物の役割解明
- 2019 - 2021 Indian Ocean variability and its impact on climate and ecosystems of the maritime continent
- 2015 - 2020 Ocean mixing in the sub-polar marginal seas and biogeochemical dynamics in the western North Pacific
- 2016 - 2019 Anthropogenic platinum and palladium in coastal areas
- 2012 - 2016 Development of hydrothermal-derived trace metals monitoring method in the ocean by using the in-situ auto analyzer
- 2011 - 2016 GEOTRACES program in the Pacific Ocean: studies on the 3-dimensional distribution and behavior of trace elements and isotopes
- 2011 - 2013 Identification of metal ligands and their producers affecting ecosystem in Lake Biwa
- 2009 - 2011 Study of bioiogeochemical cycles of Fe(II) in the ocean by using an in-situ analyzer
- 2008 - 2011 Coupling of silicon and carbon biogeochemical cycles in the surface ocean
- 2007 - 2010 Geochemical ocean sections study focusing on trace elements and isotopes in the Indian Ocean and the Japan Sea (GEOTRACES Program)
- 2006 - 2010 Bioavailability and biogeochemical processes of trace metals in the surface ocean
- 2008 - 海水中の微量金属元素の存在状態に関する研究
- 2005 - 2007 海水中の溶存態・コロイド態・粒子態微量金属元素の存在量と生物利用性に関する研究
- 2005 - 2007 The balance between biogenic silica production and its dissolution in the surface ocean
- 2004 - 2007 Biogeochemical responses of the surface ocean and the lower atmosphere during the meso-scale iron enrichment experiments
- 2005 - 2005 海洋の微量元素・同位体に関するグローバル観測研究(国際GEOTRACES計画)
- 2001 - 2004 Research of marine geochemical cycles of novel trace metals.
- 海水中の微量金属元素の高感度分析法の開発
- 海洋における微量金属元素の挙動に関する研究
- trace metals in the ocean
- Development of sensitive analytical method of trace metals in Seawater
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Papers (130)：
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Shigeyoshi Otosaka, Yunxuan Hou, Masahide Wakita, Youhei Yamashita, Jun Nishioka, Hajime Obata, Yosuke Miyairi, Yusuke Yokoyama, Hiroshi Ogawa. Origin and Transport of Dissolved Organic Matter in the Northwestern Margin of the North Pacific Inferred from Radiocarbon Signatures. Journal of Coastal Research. 2024. 116. sp1
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Siyu Jiang, Fuminori Hashihama, Hongbin Liu, Kazutoshi Yoshitake, Hideto Takami, Koji Hamasaki, Idha Yulia Ikhsani, Hajime Obata, Hiroaki Saito. Variations in Physiology and Genomic Function of Prochlorococcus Across the Eastern Indian Ocean. Journal of Geophysical Research: Oceans. 2023
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Keiji Horikawa, Tomohiro Kodaira, Jing Zhang, Hajime Obata. Salinity-oxygen isotope relationship during an El Niño (2014-2015) in the southwestern Pacific and comparisons with GEOSECS data (La Niña, 1973-1974). Marine Chemistry. 2023. 104222-104222
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Wiwit, Kuo Hong Wong, Hideki Fukuda, Hiroshi S. Ogawa, Asami Mashio, Hajime Obata. Organic complexation of copper in Japanese estuarine waters using reverse titration method. JOURNAL OF OCEANOGRAPHY. 2022
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Hirofumi Tazoe, Hajime Obata, Takuya Hara, Mutsuo Inoue, Takahiro Tanaka, Jun Nishioka. Vertical Profiles of 226Ra and 228Ra Activity Concentrations in the Western Subarctic Gyre of the Pacific Ocean. Frontiers in Marine Science. 2022. 9
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MISC (17)：
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Hiroshi Ogawa, Hajime Obata, Kotaro Shirai, Naoko Murakami-Sugihara, Hideshige Takada, Asami Suzuki Mashio, Kaoruko Mizukawa, Hideki Minami. Elucidation of the actual status of land-derived environmental pollutants. NIPPON SUISAN GAKKAISHI. 2021. 87. 5. 522-523
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佐藤光秀, 緒方菜月, 黄国宏, 小畑元, 武田重信. 深層の海水から得られた有機金属配位子の光分解. 日本海洋学会大会講演要旨集. 2020. 2020
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Iron biogeochemical cycle in the subarctic Pacific. 2016. 58. 38-46
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Dissolved platinum in seawater and river water at Japanese coastal areas. 2016. 58. 72-79
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Intercalibration and reference samples during GEOTRACES programme. 2014. 55. 106-110
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Books (11)：
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海洋観測ガイドライン Vol. 3 採水分析(溶存態)
2015
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海洋地球化学
講談社 2014
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Western Pacific Air-Sea Interaction Study
TERRAPUB 2014
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地球と宇宙の化学事典
朝倉書店 2012
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環境事典
旬報社 2008
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Professional career (1)：
- (BLANK) (Kyoto University)
Work history (5)：
- 2017/12 - 現在 The University of Tokyo Atmosphere and Ocean Research Institute
- 2010/04 - 2017/11 The University of Tokyo Atmosphere and Ocean Research Institute
- 2007/04 - 2010/03 The University of Tokyo
- 2003/04 - 2007/03 The University of Tokyo
- 2001/06 - 2003/03 The University of Tokyo
Committee career (1)：
- 2018/01 - 2021/12 日本地球化学会 和文誌「地球化学」編集委員長
Awards (3)：
- 2021/04 - (財) 海洋化学研究所 第36回海洋化学学術賞
- 2010 - 日本海洋学会日高論文賞
- 2002 - 日本海洋学会岡田賞
Association Membership(s) (6)：
American Society of Limnology and Oceanography
, American Geophysical Union
, 日本化学会
, 日本分析化学会
, 日本地球化学会
, 日本海洋学会
