Seasonal Variation of Coastal Water Movement in the Southern Bohai Sea and Water Exchange Between the Bohai Sea and the Yellow Sea
Seasonal Variation of Coastal Water Movement in the Southern Bohai Sea and Water Exchange Between the Bohai Sea and the Yellow Sea
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发表时间：
2010
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影响因子：
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通讯作者：
Y. Fei
中科院分区：
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作者：
Y. Fei
本文考虑了渤海及邻近海域海岸曲折性和水文资料时空分布的不均匀性，对渤海及邻近海域4- 10月的LOESS进行了分析，本文采用三维客观分析方法，得到了渤海南部沿岸海水的月气候盐度场，分析结果表明，渤海南部沿岸海水的运动和扩展受季风的影响显著，沿岸海水的累积主要集中在渤海湾和莱州湾，冬季沿山东半岛龙口向东沿着延伸，并进一步向蓬莱以东延伸，形成一条低盐度水舌，向渤海中部漂移、堆积，特别是在黄河口附近水域，其低盐度核厚达8 m，冬季莱州湾沿岸水交换具有明显的“渤海海峡南进北出”的特征，夏季莱州湾沿岸水交换不具有明显的稳定流型特征。
The coastal tortuosity and the inhomogeneity of the spatial-temporal distribution of the hydrographic data in the Bohai Sea and its adjacent area are considered and LOESS for the 4-dimensional objective analysis is employed to obtain the monthly climatological salinity fields.It is shown in the analysis results that the coastal water movement and extension in the southern Bohai Sea are significantly effected by monsoon.The coastal water is cumulated in the Bohai Bay and the Laizhou Bay,thus forming a low-salinity water tongue extending eastward along the coast at Longkou of Shandong Penisula and further toward the east of Penglai in winter.The low-salinity water turns to drift and cumulate toward the central Bohai Sea,especially in the water area adjacent to the Yellow River Estuary where its core of low salinity is as thick as 8 m,and as far as 119°30′E in summer.At the same time,the coastal water in the Laizhou becomes westward shrunk.The water exchange in winter is significantly characterized by a pattern of "the inflow in the south and outflow in the north of the Bohai Strait".The water exchange in summer does not have significant features of stable flow pattern.