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用1984年7月神户海洋气象台所属的春风号调查船和气象厅海洋气象部所属的凌风号调查船,夏季定期海洋观测取得的表层海流、表层水温和表层盐度资料,进行了客观分析。 根据网格点与观测点之间距离函数的权重,取网格点一定距离范围内测点值的加权平均值,求网格点值。此外就参数α的三个不同值,对表层海流进行了分析,其结果选取α=0.0044作进一步分析。分析结果,表层海流经常与黑潮主流,反气旋性涡流及气旋性涡流等呈现较好的空间连续分布。表层海流的涡度场,沿岸侧与黑潮流轴相比,越靠近沿岸侧,越呈正值,越靠向外海,几乎在所有海区均呈负值。洋面上局部低温区,对应表层海流呈正涡度的最大值,而局部高温区,对应呈负涡度最大值。事实上,像夏季海面附近形成季节性跃层时,它会显示出海面附近局部水温的高低,对表层海流的涡度场有很大影响。此外。在20米深的水温分布,暖水中的南侧边界存在波长有40公里的带状分布。
An objective analysis was carried out by using the spring wind survey ship belonging to the Kobe Marine Meteorological Observatory in July 1984 and the Lingfeng survey ship belonging to the Marine Meteorological Department of the Meteorological Administration and surface ocean currents, surface water temperatures and surface salinity data obtained from summer periodic ocean observations. According to the weight of the distance function between the grid point and the observation point, take the weighted average of the measured point value within a certain distance range of the grid point and find the grid point value. In addition, on the three different values of the parameter α, the surface current is analyzed. The result is α = 0.0044 for further analysis. As a result of the analysis, the surface currents are often continuously distributed in space with the Kuroshio main stream, anti-cyclone vortex and cyclonic vortex. The vorticity field of the surface current is closer to the coastline than the Kuroshio current axis. The more positive values are, the more the vorticity field goes to the open sea, and the value is negative in almost all the sea areas. The local low temperature region on the ocean surface corresponds to the maximum of positive vorticity in the surface current, while the maximum of negative vorticity in the high temperature region. In fact, when a seasonal thermocline is formed near the summer sea surface, it shows the local water temperature near the sea surface and greatly affects the vorticity field of surface currents. In addition. At a water depth of 20 meters, there is a banded distribution of wavelengths of 40 km along the southern boundary in the warm water.