Salinity Variability and Water Exchange in Interconnected Estuaries
Salinity Variability and Water Exchange in Interconnected Estuaries
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DOI：
10.1007/s12237-016-0195-9
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发表时间：
2017-07
影响因子：
2.7
通讯作者：
Yuntao Wang;R. Castelao;D. Di Iorio
中科院分区：
文献类型：
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作者：
Yuntao Wang;R. Castelao;D. Di Iorio
一个高分辨率的沿海海洋模型是用来调查盐度变化和水交换在一个复杂的沿海系统关闭美国南部的特点是三个相邻的声音，是由一个网络的通道，小溪，和潮间带。模型结果一般高度相关的观测从格鲁吉亚沿海生态系统长期生态研究（GCE-LTER）计划，揭示了高度的盐度变化在Altamaha河和Doboy声音，急剧下降到Sapelo声音。拉格朗日粒子跟踪方法被用来调查当地的停留时间和系统中的连接。当地的停留时间是高度可变的，从阿尔塔马哈河的距离增加和减少与河流流量，揭示了排放运输过程和河口陆架交换起着主导作用。阿尔塔马哈河和多博伊湾在所有季节都相互连接，通过沿海和河口通道进行交流。虽然在Altamaha和Doboy释放的颗粒很少到达Sapelo Sound，但在Sapelo Sound及其主要通道周围的小溪释放的颗粒可以到达整个河口系统。
A high-resolution coastal ocean model is used to investigate salinity variability and water exchange in a complex coastal system off the southern U.S. characterized by three adjacent sounds that are interconnected by a network of channels, creeks, and intertidal areas. Model results are generally highly correlated with observations from the Georgia Coastal Ecosystem Long Term Ecological Research (GCE-LTER) program, revealing a high degree of salinity variability at the Altamaha River and Doboy Sound, decreasing sharply toward Sapelo Sound. A Lagrangian particle tracking method is used to investigate local residence time and connectivity in the system. Local residence time is highly variable, increasing with distance from the Altamaha River and decreasing with river flow, revealing that discharge plays a dominant role on transport processes and estuary-shelf exchange. The Altamaha River and Doboy Sound are connected to each other in all seasons, with exchange occurring both via coastal and estuarine pathways. While particles released at the Altamaha and Doboy rarely reach Sapelo Sound, particles released at Sapelo Sound and the creeks surrounding its main channel can reach the entire estuarine system.