通过对所收集到历史海温实测资料的分析,概括了夏季渤、黄海温度结构的特点。在此基础上结合最新的卫星风场、有效波高场和地形资料,分析了风浪及地形对温度结构的影响。结果表明,在开阔的海域,夏季渤、黄海区较大的有效波高都出现在风区较长的地方,而有效波高的大小直接影响着上层海水的混合。渤海中部的双冷核结构和黄海中部温度的台状结构是波浪在海洋表层造成的混合与地形导致的潮汐混合共同作用的结果。夏季在没有明显上升流和平流的地方,浅水处表层温度与水深的关系满足热惯性机制,有温跃层产生的深水处水深仍然能影响到上混合层的深度。
We describe the summer temperature structure in the Bohai and Yellow Seas with historical observation data. Furthermore, we analyze the impacts of wind wave and topography on the thermal structure based on the QSCAT Wind vector data, the T/P Significant Wave Height(SWH) data and topography data. Our results show that the high SWH is always compared with the large wind fetch and the SWH determines the upper layer mixing. The warm water and double-cold-core structure in the Bohai Sea and the platform-shaped temperature structure in the Yellow Sea are resulted from the elevated tidal mixing from the bottom and enhanced wave mixing from the surface. Surface temperature is also affected by the topography. Without the strong up-welling and advection, the temperature in the shallow water is proportional to the water depth. Even in the deep water with the thermocline, the topography still has strong effects on the mixing layer depth.