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Numerical study for specifying the major origin of low salinity water associated with <Emphasis Type="Italic">Chattonella</Emphasis> (Raphidophyceae) blooms in Tachibana Bay,Japan |
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| Authors: | |
| Institution: | 1.National Research Institute of Fisheries Science,Fisheries Research and Education Agency,Yokohama,Japan;2.Fisheries Research and Education Agency,Yokohama,Japan;3.Hokkaido National Fisheries Research Institute,Fisheries Research and Education Agency,Kushiro,Japan;4.Nagasaki Prefectural Institute of Fisheries,Nagasaki,Japan;5.Nagasaki Prefectural Tsushima District Fisheries Extension Advisory Center,Tsushima,Japan;6.Nagasaki Prefectural Nagasaki District Fisheries Extension Advisory Center,Nagasaki,Japan |
| Abstract: | In both 2009 and 2010, massive Chattonella blooms occurred in Tachibana Bay. Observation results show that high cell densities of Chattonella were distributed in the central area of Tachibana Bay with low salinity water. Model results indicate that the low salinity water originated from the Ariake Sea and intruded into Tachibana Bay during the northerly or weak winds. It is suggested that low salinity water was mainly discharged from the northern area of the Ariake Sea. Northerly wind enhanced the horizontal advection of the low salinity water intruding into Tachibana Bay originating from the northern area of the Ariake Sea. |
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