摘要
The seasonal circulation in the southeastern Huanghai Sea has been studied with hydrographic data,which were observed in February and June 1994 and bimonthly during 1970 - 1990, and numerical model results.Horizontal distributions of tempersture and salinity in 1994 are quite different due to strong tidal mixing so that weneed a analysis to see the real distributions of water masses. The mixing ratio analysis with the data of 1970 - 1990shows the connection of the waters in the west coasts of Korea Peninsula with warm and saline waters from the southin summer, which means northward inflows along the west coasts of Korea Peninsula in summer. With this flow, theseasonal circulations, which are deduced from the seasonal change of water mass distributions in the lower layer, arewarm inflows in winter and cold outflows in summer in the central Huanghai Sea, and cold outflows in winter andwarm inflows in summer along the west coasts of Korea Peninsula. The seasonall changed inflows might be theHuanghai Sea Warm Current. The monsoon winds can drive such circulations. However, summer monsoon winds areweak and irregular. As one of other possible dynamics, the variation of Kuroshio transport is numerically studied withallowing sea level fluctuations. Although it should be studied more, it possibly drives the summer circulations. The realcirculations seem to be driven by both of them.
The seasonal circulation in the southeastern Huanghai Sea has been studied with hydrographic data,which were observed in February and June 1994 and bimonthly during 1970 - 1990, and numerical model results.Horizontal distributions of tempersture and salinity in 1994 are quite different due to strong tidal mixing so that weneed a analysis to see the real distributions of water masses. The mixing ratio analysis with the data of 1970 - 1990shows the connection of the waters in the west coasts of Korea Peninsula with warm and saline waters from the southin summer, which means northward inflows along the west coasts of Korea Peninsula in summer. With this flow, theseasonal circulations, which are deduced from the seasonal change of water mass distributions in the lower layer, arewarm inflows in winter and cold outflows in summer in the central Huanghai Sea, and cold outflows in winter andwarm inflows in summer along the west coasts of Korea Peninsula. The seasonall changed inflows might be theHuanghai Sea Warm Current. The monsoon winds can drive such circulations. However, summer monsoon winds areweak and irregular. As one of other possible dynamics, the variation of Kuroshio transport is numerically studied withallowing sea level fluctuations. Although it should be studied more, it possibly drives the summer circulations. The realcirculations seem to be driven by both of them.
