日本海深層水の海水年齢

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Title: 日本海深層水の海水年齢

Other Titles: Average Age of Deep Circulation in the Japan Sea

Authors: 磯田, 豊 ¹ Browse this author →KAKEN DB

荒巻, 能史 ² Browse this author →KAKEN DB

Authors(alt): Isoda, Yutaka¹

Aramaki, Takafumi²

Keywords: Japan Sea

average age

vertical diffusive coefficient

vertical one dimensional multi-layered model

Issue Date: 23-Dec-2020

Publisher: 北海道大学大学院水産科学研究院

Journal Title: 北海道大学水産科学研究彙報

Journal Title(alt): Bulletin of Fisheries Sciences, Hokkaido University

Volume: 70

Issue: 2

Start Page: 119

End Page: 132

Abstract: Selecting the parameters to represent vertical distributions of potential temperature and carbon isotope of δ14C obtained over almost whole areas in the Japan Sea, the average age of deep circulation was calculated using vertical one dimensional multi-layered model. The model results suggest that the maximum age of 160 year appears near the depth of 2,000 m and a reasonable vertical diffusive coefficient is around 2 cm2s−1. A sinking volume transport to deep water below 1°C is estimated to be about 1.3 Sv (1 Sv = 106 m3s−1), which has the same order of magnitude as the inflow volume transport of the Tsushima Warm Current.

Type: bulletin (article)

URI: http://hdl.handle.net/2115/80067

Appears in Collections: 北海道大学水産科学研究彙報 = Bulletin of Fisheries Sciences, Hokkaido University > 第70巻 第2号