La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	Spatial and Temporal Variation of a Cyclonic Eddy Detected Downstream of the Tsushima Islands in November 2007
Auteurs :	Tetsutaro Takikawa, Auteur ; Goh Onitsuka, Auteur ; Ken-ichi Fukudome, Auteur ; Jong-Hwan Yoon, Auteur ; Akihiko Morimoto, Auteur ; Masatoshi Moku, Auteur ; Atsushi Watanabe, Auteur
Type de document :	Article
Dans :	Estuaries and Coasts (34(4) JUL 2011)
Article en page(s) :	775-784
Résumé :	Horizontal, vertical and temporal distribution of a cyclonic (counterclockwise) eddy, where biological productivity is high, downstream of the Tsushima Islands in the eastern channel of the Tsushima Straits in November 2007 was revealed using conductivity-temperature-depth and acoustic Doppler current profiler data. The eddy had a horizontal scale of approximately 40-60 km, and the accompanying baroclinic current was more than 15 cm s(-1) at the edge of the eddy. The island-induced cyclonic eddy moved east-northeastward at about 10 km day(-1) (similar to 10 cm s(-1)) along the Tsushima Warm Current and was intensified by the barotropic instability in the current shear. The cyclonic eddy with high surface chlorophyll a concentrations intensified in the vicinity of the Tsushima Islands and was advected by the Tsushima Warm Current towards the southwestern Japan Sea.

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