Processes controlling stratification in Liverpool Bay
Processes controlling stratification in Liverpool Bay
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控制利物浦湾分层的过程
DOI：
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
A. Souza
中科院分区：
文献类型：
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作者：
D. Norman;Jennifer M. Brown;L. Amoudry;A. Souza
英国西北部的利物浦湾是一个受淡水影响的浅水高潮区（范围> 10 m），也就是说，除了快速潮流（> 1 m/s）外，该区域的动态还受到迪、默西和里布尔河口的河口流出的强烈影响（Simpson等人，1990年）。分层被发现由盐度主导，尽管河流温度确实具有季节性影响（波尔顿等人，2011年）。2008年期间，在停泊地点A和B（国家海洋学中心海岸观测站（COBS）的一部分）确定了利物浦湾内分层的变化，在这项研究中，这是底部和表面密度之间的正差异。这些时期，然后相关的大气强迫，波浪，潮汐和河流流出的目的是确定在这些时候控制分层的过程。先前对2008年分布直方图的分析（Norman等人，2014年b）表明，这是一个典型的一年，在大气，河流和沿海条件，因此适合这项研究。
Liverpool Bay in the NW of the UK is a shallow, hypertidal region (with range >10m) of freshwater influence, that is, in addition to the fast tidal currents (>1m/s), the dynamics of the region are strongly influenced by estuarine outflow from the Dee, Mersey and Ribble estuaries (Simpson et al., 1990). Stratification is found to be dominated by salinity, although river temperature does have a seasonal effect (Polton et al., 2011). Instances of stratification within Liverpool Bay during 2008 are identified at mooring sites A and B, which form part of the National Oceanography Centre’s Coastal Observatory (COBS), as a positive difference between bottom and surface density, in this study. These periods are then correlated to atmospheric forcing, waves, tides and river outflow with the aim of identifying the processes controlling stratification at those times. Previous analysis of distribution histograms over 2008 (Norman et al., 2014b) showed that it is a typical year in atmospheric, riverine and coastal conditions so is suitable for this study.