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Sustainability Weeks 2011 >
The Third Hokkaido University Sustainability Research Poster Contest >
The estimate of the denitrification using nitrogen gas excess in the Sea of Okhotsk
| Title: | The estimate of the denitrification using nitrogen gas excess in the Sea of Okhotsk |
| Authors: | Ito, Masanori1 Browse this author |
| Authors(alt): | 伊藤, 昌稚1 |
| Issue Date: | 25-Oct-2011 |
| Citation: | 第3回北海道大学サステナビリティ学生研究ポスターコンテスト = The Third Hokkaido University Sustainability Research Poster Contest. 平成23年10月25日（火） - 11月6日（日）. 北海道大学学術交流会館, 札幌市. |
| Abstract: | We measured argon (Ar) and nitrogen (N2) gasses and firstly tried to estimate quantitatively the extent of denitrificaion in the Sea of Okhotsk with considering the bubble injection process. Dissolved N2, Ar and oxygen were obtained at six stations within this region in August, 2007 by using the method of a gas chromatography developed by Tanaka and Watanabe [2007]. With considering several recent hydrological physical data [Itoh et al., 2003; Ohshima et al., 2006], we estimated the total water-column inventory of the nitrogen gas excess above background and the denitrification rate in the Sea of Okhotsk to be 4.3±1.7 mol m-2 and 0.4-1.3±0.5 T mol y-1, respectively. This estimation of the denitrification rate in the Sea of Okhotsk was about half of that in the Arabian Sea where is known as the oxygen deficient zones, contributing significantly to the global water-column denitrification. |
| Conference Name: | Hokkaido University Sustainability Research Poster Contest | | 北海道大学サステナビリティ学生研究ポスターコンテスト |
| Conference Sequence: | 3 |
| Conference Place: | Sapporo | | 札幌 |
| Type: | conference presentation |
| URI: | http://hdl.handle.net/2115/47514 |
| Appears in Collections: | 北海道大学サステナビリティ・ウィーク2011 (Sustainability Weeks 2011) > 第3回北海道大学サステナビリティ学生研究ポスターコンテスト (The Third Hokkaido University Sustainability Research Poster Contest)
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Submitter: 伊藤 昌稚
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