...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Ocean Dynamics >A numerical system to study the transport properties in the Ria de Aveiro lagoon
【24h】

A numerical system to study the transport properties in the Ria de Aveiro lagoon

机译：研究Ria de Aveiro泻湖中输运特性的数值系统

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This work presents results from numerical modelling studies on the hydrodynamics and sediments and passive particles transport properties in Ria de Aveiro, a shallow lagoon located on the Portuguese Northwest Atlantic coast. The hydrodynamic of the lagoon was systematically studied, from both the Eulerian and Lagragian point of view, in order to understand the overall circulation in the lagoon, characterize the dynamics of its different channels and assess the transport of suspended cohesive sediments. The two complementary approaches, Lagrangian and Eulerian (general and residual transport), were found to be useful tools in order to assess the overall and long-term transport of suspended particles in the lagoon. Tidal, wind- and river-induced residual currents contribute to the net exportation of water and particles towards the ocean. Residual currents at the far end of the channels are small, indicating areas of deposition and bed consolidation. Tidal currents are the main forcing processes in transport of suspended sediments and the concentration of sediments follows the tidal cycle. The effect of Vouga river inputs on the suspended concentration in the lagoon is enhanced during spring tides, high river runoff and periods of strong wind. In most parts of Ria de Aveiro, deposition is the dominant process, indicating that the lagoon has a very consolidated bed.
机译：这项工作是对位于葡萄牙西北大西洋沿岸浅泻湖Ria de Aveiro的水动力和沉积物以及被动粒子传输特性进行数值模拟研究的结果。从欧拉和拉格朗日的角度系统地研究了泻湖的水动力，以了解泻湖的整体环流，表征其不同通道的动力学特性并评估悬浮的粘性沉积物的运移。为了评估泻湖中悬浮颗粒的总体和长期运输，发现了两种互补的方法，即拉格朗日法和欧拉法（一般和残留运输）。潮汐，风和河引起的剩余流有助于向海洋净输出水和颗粒。通道远端的剩余电流很小，表明沉积和床层固结的区域。潮流是悬浮泥沙输送的主要推动力过程，泥沙浓度遵循潮汐周期。在春季潮汐，高径流量和强风期间，伏加河输入对泻湖中悬浮物的影响会增强。在Ria de Aveiro的大部分地区，沉积是主要过程，这表明泻湖的床层非常坚固。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号