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首页> 外文会议>International Workshop on Marine Remote Sensing in Northwest Pacific Region; 20041011-12; Beijing(CN) >Seasonal Variations of Sea Surface Temperature and River Plume in the Bohai Sea
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Seasonal Variations of Sea Surface Temperature and River Plume in the Bohai Sea

机译：渤海海面温度和河羽的季节变化

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Satellite images from NOAA AVHRR between January 2002 and December 2002 were analyzed Satellite images with the horizontal resolution of 1 km were composited every 5 days. Harmonic analysis was carried out every mesh point to obtain the amplitude and phase of seasonal SST (Sea Surface Temperature) variation in the Bohai Sea. The amplitude of seasonal SST variation is large in the shallow area but it is small in the deep area. As for the phase lag of the seasonal variation, SST at the Bohai Strait takes its maximum value on 20 August but SST in the coastal area takes its maximum value on 30 August. Such facts suggest that the horizontal heat transport from the Kuroshio plays more important role for the seasonal SST variation in the Bohai Sea than the sea surface heat flux. Nest we examine the characteristics of river plume dispersion from the Yellow River by the visible band of NOAA image. The river plume from the mouth of the Yellow River mainly spread westward. Such flow direction of river plume coincides well with the flow direction of tide-induced Lagrangian residual flow, which is obtained by a three-dimensional numerical calculation.
机译：分析了NOAA AVHRR在2002年1月至2002年12月之间的卫星图像，每5天合成水平分辨率为1 km的卫星图像。对每个网格点进行谐波分析，以获得渤海季节性SST（海表温度）变化的幅度和相位。 SST季节变化的幅度在浅层区域较大，而在深层区域较小。关于季节变化的相位滞后，渤海海峡的SST在8月20日达到最大值，而沿海地区的SST在8月30日达到最大值。这些事实表明，来自黑潮的水平热传输对渤海海表温度的季节性变化起着比海面热通量更重要的作用。在巢中，我们通过可见的NOAA图像带考察了黄河中的河羽散布特征。来自黄河口的河羽主要向西扩散。河水羽流的这种流向与潮汐引起的拉格朗日残余流的流向非常吻合，后者是通过三维数值计算获得的。

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