| 摘要: |
| 本文基于现场观测资料并结合FVCOM三维海洋模式的模拟结果，研究了2010年青岛冷水团生消过程和演变机制。结果表明，山东半岛东南海域的中层冷水是青岛冷水团的雏形，于4月中旬演变为青岛冷水团，位于青岛东南外海40m以下的盐度锋面中；刻画了青岛冷水团的消亡过程：5月青岛冷水团的北部底层水并入南黄海底层冷水中，构成南黄海的西部冷中心；而南部水团面积大幅减小，温盐特征大幅上升；6月上旬，青岛冷水团完全被南黄海底层冷水吞并，青岛冷水团完全消亡；揭示了青岛-石岛近海反气旋涡、黄海冷水团锋面密度环流对青岛冷水团的作用，前者是青岛冷水团存在的动力机制，后者加剧了底层海域的水平热量交换，促使了青岛冷水团的消亡。 |
| 关键词: 青岛冷水团 中层冷水 青岛-石岛近海反气旋涡 黄海暖流 黄海冷水团锋面密度环流 |
| DOI：10.11693/hyhz20190600106 |
| 分类号:P731 |
| 基金项目:国家重点研发计划项目，2016YFC140130号；国家自然科学基金课题，U1706218号。 |
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| EVOLUTION AND MECHNISM OF THE QINGDAO COLD WATER MASS |
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HUANG Hao, CHEN Xue-En, LIN Lin
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College of Oceanic and Atmospheric Sciences, Ocean university of China, Qingdao 266100, China
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| Abstract: |
| The evolution and mechanism of Qingdao Cold Water Mass (QCWM) in the South Yellow Sea off Qingdao in the south of the Shandong Peninsula, China, are studied using hydrological data and simulation results of three-dimensional ocean model FVCOM (Finite Volume Coastal Ocean Model). We found that the intermediate cold water in the southeastern waters of the peninsula is the prototype of the QCWM stationed in the salinity front of bottom water after its full formation below 40m in April. In May, the northern part of the QCWM joins with the southern Yellow Sea Cold Water Mass (SYSWM) and forms the western cold center of the South Yellow Sea. Meanwhile, the southern part continues to shrink, in which temperature and salinity rise sharply, and merges to the SYSWM at last. In early June, the QCWM is taken entirely by SYSWM and disappears in the end. In addition, our numerical simulation shows that the Qingdao-Shidao offshore mesoscale anticyclonic eddy is the dynamic source of QCWM and the frontal density circulation of the Yellow Sea Cold Water Mass promotes the heat exchange, which accelerates the termination of QCWM. |
| Key words: Qingdao Cold Water Mass (QCWM) intermediate cold water Yellow Sea Warm Current Qingdao-Shidao offshore mesoscale anticyclonic eddy Yellow Sea Cold Water Mass frontal density circulation |
