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Journal of Oceanography

, Volume 64, Issue 4, pp 585–594 | Cite as

Characteristics of water mass under the surface mixed layer in Tsushima Straits and the southwestern Japan Sea in autumn

  • Tetsutaro TakikawaEmail author
  • Akihiko Morimoto
  • Goh Onitsuka
  • Atsushi Watanabe
  • Masatoshi Moku
Original Articles

Abstract

Two different cold waters were found under the surface mixed layer in Tsushima Straits and the southwestern Japan Sea in autumn 2004. One is cold saline water with a low concentration of dissolved oxygen, and the other is cold less saline water with a high concentration of dissolved oxygen. The older saline water originates from the bottom of the East China Sea, strongly influenced by the Kuroshio water with high salinity. The bottom density in the eastern channel of the Tsushima Straits is coincident with that of the East China Sea in autumn, corresponding to the season when the cold saline water was frequently found in the Tsushima Straits. The newer less saline water originates from the front of Tsushima Warm Current between the Tsushima Warm Current water and the surface cold water in the Japan Sea. This water is formed by subduction above the isopycnal surface from the front of the Tsushima Warm Current.

Keywords

Tsushima Straits characteristics of water mass water exchange between the East China Sea and the Japan Sea 

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Copyright information

© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  • Tetsutaro Takikawa
    • 1
    Email author
  • Akihiko Morimoto
    • 2
  • Goh Onitsuka
    • 1
  • Atsushi Watanabe
    • 2
  • Masatoshi Moku
    • 1
  1. 1.National Fisheries University, Nagata-HonmachiShimonosekiJapan
  2. 2.Hydrospheric Atmospheric Research CenterNagoya UniversityNagoyaJapan

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