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オホーツク海高密度陸棚水への鉄のポテンシャル供給域

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Please use this identifier to cite or link to this item:http://doi.org/10.14943/lowtemsci.74.95

Title: オホーツク海高密度陸棚水への鉄のポテンシャル供給域
Other Titles: Potential source areas of dissolved iron to dense shelf water in the Sea of Okhotsk
Authors: 内本, 圭亮 Browse this author
中村, 知裕 Browse this author →KAKEN DB
西岡, 純 Browse this author →KAKEN DB
三寺, 史夫 Browse this author →KAKEN DB
三角, 和弘 Browse this author
津旨, 大輔 Browse this author
若土, 正暁 Browse this author
Issue Date: 31-Mar-2016
Publisher: 低温科学第74巻編集委員会
Journal Title: 低温科学
Journal Title(alt): Low Temperature Science
Volume: 74
Start Page: 95
End Page: 104
Abstract: 近年,北西北太平洋における主な鉄の供給源がオホーツク海北部の陸棚域にあり,高密度陸棚水(DSW)とともに運ばれてくることが観測により明らかになった.また,シミュレーションでDSW中の高濃度鉄の再現も行われた.本稿では,オホーツク海の鉄循環モデルを概説し,数値実験によって,オホーツク海のどの海域がDSW への鉄供給源になりうるのかを考察する.数値実験では,オホーツク海の陸棚域を,北部の西部,中央部,東部とそれ以外の4 海域に分割し,それぞれの陸棚由来の鉄のDSW への寄与を調べている.その結果,西部の寄与が最も大きく,ついで中央部とそれ以外が大きいことがわかり,東部からの寄与は小さいことがわかった.
Recent observations have elucidated that a source region of iron to the northwestern North Pacific is the northern part of the shelf region in the Sea of Okhotsk, and that the iron is transported with dense shelf water (DSW). The high concentration of iron in DSW is successfully simulated. In this paper, we summarize the model of iron cycle in the Sea of Okhotsk, and discusses potential source regions of iron to DSW based on numerical experiments. In the experiments, the continental shelf in the Sea of Okhotsk is divided into 4 regions: the northwestern shelf (NW), the central part of the northern shelf (NC), the northeastern shelf (NE), and the other (OT). The experiments suggest that the contribution of NW to the high concentration of iron in DSW is the largest, and is followed by NC and OT. The contribution of NE is small
Type: bulletin (article)
URI: http://hdl.handle.net/2115/61203
Appears in Collections:低温科学 = Low Temperature Science > 第74巻

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