Tidal flushing and wind driven circulation of Ahe atoll lagoon (Tuamotu Archipelago, French Polynesia) from in situ observations and numerical modelling
Tidal flushing and wind driven circulation of Ahe atoll lagoon (Tuamotu Archipelago, French Polynesia) from in situ observations and numerical modelling
复制标题
DOI：
10.1016/j.marpolbul.2012.05.041
复制
发表时间：
2012-01-01
影响因子：
5.8
通讯作者：
Andrefouet, S.
中科院分区：
文献类型：
--
作者：
Dumas, F.;Le Gendre, R.;Andrefouet, S.
使用 1 年的现场数据和 3D 水动力模型对阿赫环礁（法属波利尼西亚土阿莫土群岛）半封闭深泻湖的水动力功能和水循环进行了研究。潮汐幅度平均小于 30 厘米，但潮汐在通道中产生非常强的水流 (2 m s(-1))，形成喷射状环流，将泻湖分成三个残余环流单元。该通道完全冲走了波浪引起的辐射应力带来的多余水。根据气候气象条件计算了环流模式，并用河流功能和冲洗时间进行了总结。泻湖水动力和一般翻转环流是由风驱动的。更新时间为 250 天，而电子冲洗时间为整个泻湖的平均时间为 80 天。潮汐冲刷和风驱动翻转环流使阿合湖成为风驱动、潮汐和弱波浪冲刷的深泻湖。 3D 模型允许研究珍珠贝幼虫在水产养殖应用的现实和气候条件下的扩散。 (C) 2012 Elsevier Ltd. 保留所有权利。
Hydrodynamic functioning and water circulation of the semi-closed deep lagoon of Ahe atoll (Tuamotu Archipelago, French Polynesia) were investigated using 1 year of field data and a 3D hydrodynamical model. Tidal amplitude averaged less than 30 cm, but tide generated very strong currents (2 m s(-1)) in the pass, creating a jet-like circulation that partitioned the lagoon into three residual circulation cells. The pass entirely flushed excess water brought by waves-induced radiation stress. Circulation patterns were computed for climatological meteorological conditions and summarized with stream function and flushing time. Lagoon hydrodynamics and general overturning circulation was driven by wind. Renewal time was 250 days, whereas the e-flushing time yielded a lagoon-wide 80-days average. Tide-driven flush through the pass and wind-driven overturning circulation designate Ahe as a wind-driven, tidally and weakly wave-flushed deep lagoon. The 3D model allows studying pearl oyster larvae dispersal in both realistic and climatological conditions for aquaculture applications. (C) 2012 Elsevier Ltd. All rights reserved.