Physical oceanographic processes affecting larval transport around and through North Carolina inlets
Physical oceanographic processes affecting larval transport around and through North Carolina inlets
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影响幼虫在北卡罗来纳州入口周围和通过北卡罗来纳州入口运输的物理海洋学过程
DOI：
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发表时间：
1985
期刊：
影响因子：
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通讯作者：
G. Janowitz
中科院分区：
文献类型：
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作者：
L. Pietrafesa;G. Janowitz
大西洋斑鱼、比目鱼、克罗克鱼和鲱鱼都在深秋至初冬期间在北卡罗莱纳州的大陆架水域产卵。在它们的第一个冬季和春季，幼崽们将帕姆利科湾和开普菲尔河等河口作为托儿所。先前关于通过堰洲岛入口或河口口进入河口的研究假设，变态前和变态后的幼虫从水柱底部进入河口，然后向上游移动。这些机制被认为是潮汐的。帕姆利科湾有几个入口，俄勒冈湾、哈特拉斯湾和奥克拉克湾，幼虫不仅可以在潮汐的洪水阶段进入，而且在有利的海洋和河口海平面压力梯度存在的情况下也可以进入。开普菲尔河有强烈的半日潮汐，涨潮和退潮都有，在河口也有强烈的单向辐散和辐合。流，从嘴向外看，在左边进，在右边出。结论是，除了洪水潮汐外，河口的非局地强迫也会影响幼鱼通过河口的整个水柱的运输。
Atlantic Spot, Flounder, Croaker and Menhaden all spawn in shelf waters of North Carolina during late fall to early winter. The juveniles use estuaries such as Pamlico Sound and the Cape Fear River as nurseries during their first winter and spring. Previous studies of recruitment into the estuaries through barrier island inlets or estarine mouths assume that the pre and post metamorphosed larvae enter the estuaries at the bottom of the water column and move upstream thereafter. The mechanisms were presumed tidal. The Pamlico Sound has several inlets, Oregon, Hatteras and ocracroke, through which larvae can enter not only during flood stages of the tide but also in the presence of favorable oceanic to estuary sea level pressure gradients. The Cape Fear River has a strong semi-diurnal tidal flow both flood and ebb and also responds vigorously to one-sided divergences and convergences at its mouth. Flow, looking out of the mouth, is in at the left and out on the right. The conclusions are that, in addition to flooding tides, non-local forcing at the estuary mouths can effect transport of larval fish through the estuary mouths, throughout the entire water column.