Obata Hajime

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

2015 - 2018 Nanoparticulate metal sulfides and their importance of stability of trace metals in oxygenated seawater

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.

1998 - 1998 天然水中のアルミニウムの現場型高感度自動定量法の開発

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