胶州湾夏季盐度长期输运机制分析  

Investigation to Long-Term Transport Mechanism of Salinity in Jiaozhou Bay in Summer

作　　者：王以菲 蔡忠亚[1] 王强[2] 史洁[1] 

机构地区：[1]中国海洋大学环境科学与工程学院,山东青岛266100 [2]国家海洋局北海预报中心,山东青岛266033

出　　处：《中国海洋大学学报（自然科学版）》2014年第6期10-17,共8页Periodical of Ocean University of China

基　　金：海洋公益性行业科研专项(20080511;201205018)资助

摘　　要：依据在胶州湾2009年夏季航次获得的21个站位温盐同步观测资料,在普林斯顿海洋模式的基础上建立了只考虑M2分潮的诊断斜压模式。基于模拟结果以单宽通量机制分解法,定量分析了胶州湾盐度长期输运机制,并通过设计实验讨论了漫滩、斜压以及风对盐度长期输运的影响。与以往在河口区的研究不同,胶州湾水体长期输运在盐度长期输运各分解项中占主导,潮泵与垂向切变输运作用较弱,水盐长期输运分离现象并不显著。漫滩能够较大的促进水体输运和潮泵输运作用,斜压使得垂向切变输运得到加强,促进了水盐长期输运的分离,而风削弱了垂向切变输运作用,抑制了其分离。本研究定量给出了胶州湾水体和盐度长期输运的特征。Based on the synchronously observed sea temperature and salinity at 21 anchor stations in summer in 2009, Princeton Ocean Model （POM） is used to simulate the current field of the Jiaozhou Bay forced by M2 tidal constituent. The long-term transport of salinity is calculated by the flux decomposition method, and the effects of tidal flat, barocline and wind on it are estimated. The results show that compared with other estuaries, the influence of water＇s long-term transport is dominant in the salinity＇s longterm transport in Jiaozhou Bay. Other components as tidal pumping and vertical shearing are not relatively important, which cannot lead to the obvious separation of salinity and water＇s long transport. Tidal flat accelerates the water＇s long-term transport and tidal pumping velocity, and barocline enhances the vertical shearing transport, which promotes the separation of salinity and water＇s long-term transport. On the contrary, wind makes the influence of vertical shearing weaker, and inhibits its separation. This study quantitively shows the characteristic of water and salinity＇s long-term transport.

关 键 词：盐度长期输运 通量机制分解 潮泵 胶州湾 

分 类 号：P731.12[天文地球—海洋科学]