渤中浅滩对渤海夏季底层冷水带的影响Influence of the Central Bohai Shoal on the Bottom Cold Water Belt in Summer
姜贺,郑鹏,陈学恩
摘要(Abstract):
本文基于有限体积海洋模式(Finite volume coastal ocean model, FVCOM),模拟了2016年夏季渤海温度场的三维结构,准确刻画了夏季渤海底层以渤中浅滩为暖中心,四周被冷水包围的温度分布特征(渤海夏季底层冷水带),再现了渤海夏季底层“非对称双中心冷水”结构。在此基础上,通过保守物质示踪实验以及拉格朗日粒子追踪实验分析了渤海夏季底层冷水带的来源;通过地形实验分析了渤海夏季底层冷水带的形成机制,讨论了渤中浅滩对渤海夏季底层冷水带的影响。结果表明,渤海夏季底层冷水带中的低温水主要为渤海冬季残留冷水,北黄海冷水入侵也对其有一定贡献;渤中浅滩水深较浅、四周较深的地形差异是形成渤海夏季底层冷水带的主要原因。
关键词(KeyWords): 夏季底层冷水带;渤中浅滩;地形实验;海洋模式;渤海
基金项目(Foundation): 国家重点研究发展计划项目(2021YFF0704002)资助~~
作者(Author): 姜贺,郑鹏,陈学恩
DOI: 10.16441/j.cnki.hdxb.20220352
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