Abstract
Recently, eutrophication is serious problem in the Imari Bay because of an increase in load from the land and the food scatter of acuaculture. Therefore, red tides have been generated. Especially, a large-scale red tide gives the aquaculture and the ecology to the extensive damages. So, it is necessary to decrease the red tide. But, the generation mechanism of red tide is not understood in detail. So, to clarify the generation mechanism of red tide, we analyze the wind influences on a flow, which has great influence on generation of red tide in Imari Bay. As a consequence, it is clear that the northwind has generated a red tide because the wind weakened the water exchange.
