Premium
The Okhotsk‐Pacific seawater exchange in the viewpoint of vertical profiles of radiocarbon around the Bussol' Strait
Author(s) -
Aramaki Takafumi,
Watanabe Shuichi,
Kuji Tomoyuki,
Wakatsuchi Masaaki
Publication year - 2001
Publication title -
geophysical research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.007
H-Index - 273
eISSN - 1944-8007
pISSN - 0094-8276
DOI - 10.1029/2001gl013227
Subject(s) - oceanography , geology , water column , pacific ocean , seawater , circumpolar deep water , water mass , radiocarbon dating , surface water , deep water , climatology , north atlantic deep water , environmental science , paleontology , environmental engineering
Vertical profiles for Δ 14 C values were described around the Bussol' Strait for the first time. The abnormality of Δ 14 C values at 0–400 m depth in the Bussol' Strait was observed, and expected that diapycnal mixing occurs between the sub‐surface water around the Bussol' Strait and the surface water in the Bussol' Strait. The Okhotsk‐Pacific cross‐sections through the Bussol' Strait of Δ 14 C and σ ϑ suggested the intermediate water in the Sea of Okhotsk (26.8–27.3 σ ϑ ) has the role of the Okhotsk‐Pacific water exchange, and the deep water (>27.3 σ ϑ ) between the Sea of Okhotsk and the Pacific Ocean is mixed well rapidly through the Bussol' Strait. Using estimation of bomb produced 14 C inventories in each water column, it was suggested the quantities of the Okhotsk‐Pacific water exchange may be essentially small.