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lmportance of tidal mixing process at Kuril Strait for iron supply to Western Subarctic Pacific, Oyashio region lmportance of tidal mixing process at Kuril Strait for iron supply to Western Subarctic Pacific, Oyashio region 西岡, 純 ニシオカ, ジュン 中塚 , 武 ナカツカ, タケシ 久万, 健志 クマ, ケンシ VOLKOV, Y. SCHERBININ, A. NISHIOKA, JUN Nakatsuka, Takeshi KUMA, KENSHI VOLKOV, Y. SCHERBININ, A. application/pdf Vertical iron distributions were investigated on the cruise around the Kuril Straits in 2006 summer, (kh06-cruise). Detailed profiles from Kuril Strait suggests that the iron-rich Okhotsk Sea intermediate waters (OSIW) influence the surface layer around the Kuril Straits and the iron was re-distributed to the wide range of density in the water column, probably due to the strong diapicnal mixing affects the chemical properties of the OSIW. This process raises the surface iron concentrations with macro-nutrients concentrations, and the water will be subsequently transported to the Oyashio region. The significantly higher ratios of iron to nitrate in mixed layer in the Kuril Strait than eastern subarctic Pacific (ESP) were observed in this study. A greater supply of macro-nutrients and substantially higher seasonal nutrient utilization in the Oyashio region, compared with ESP, might partially be explained by a larger upward iron flux in the Kuril Strait. The consideration of mixing process with re-distribution of macro- and micro-nutrient at the Kuril Strait is essential in our understanding of the biological production and biogeochemical cycles in the Oyashio region of the western subarctic Pacific (WSP). Amur-Okhotsk Project 2008-09 eng book VoR https://chikyu.repo.nii.ac.jp/records/2706 4-902325-24-9 http://www.chikyu.ac.jp/AMORE/ アムール・オホーツクプロジェクト http://www.chikyu.ac.jp/ 総合地球環境学研究所 Report on Amur-Okhotsk Project No.5 11 19 https://chikyu.repo.nii.ac.jp/record/2706/files/Amur_Okhotsk_Project_5_4.pdf application/pdf 9.7 MB 2019-03-27