...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Physical Oceanography >The Effect of Wind on the Dispersal of the Hudson River Plume
【24h】

The Effect of Wind on the Dispersal of the Hudson River Plume

机译：风对哈德逊河羽流扩散的影响

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

The dispersal of the Hudson River plume in response to idealized wind forcing is studied using a three-dimensional model. The model domain includes the Hudson River and its estuary, with a realistic coastline and bottom topography of the New York Bight. Steady low river discharge typical of mean conditions and a high-discharge event representative of the spring freshet are considered. Without wind forcing the plume forms a southward coastally trapped current at low river discharge and a large recircu-lating bulge of low-salinity water during a high-discharge event. Winds affect the freshwater export through the mouth of the estuary, which is the trajectory the plume takes upon entering the waters of the Mid-Atlantic Bight inner shelf, and the rate at which freshwater drains downstream. The dispersal trajectory is also influenced by the particular geography of the coastline in the apex of the New York Bight. Northward wind causes offshore displacement of a previously formed coastally trapped plume and drives a new plume along the Long Island coast. Southward wind induces a strong coastal jet that efficiently drains freshwater to the south. Eastward wind aids freshwater export from the estuary and favors the accumulation of freshwater in the recirculating bulge outside the mouth of Raritan Bay. Westward wind delays freshwater export from Raritan Bay. The momentum balance of the modeled plume shows that buoyancy and wind forces largely determine the pattern of horizontal freshwater dispersal, including the spreading of freshwater over ambient, more saline water and the bulge formation.
机译：使用三维模型研究了哈德逊河羽流对理想风强迫的响应。模型域包括哈德逊河及其河口，具有逼真的海岸线和纽约湾的底部地形。考虑了平均条件下典型的稳定低河流量和代表春季新生的高流量事件。在没有风的情况下，羽流在河水流量低时形成向南的沿岸捕获流，并在高流量时形成低盐度水的大回流。风影响着通过河口的淡水出口，这是羽流进入大西洋中海岸线内陆架水域时所经过的轨迹，以及淡水向下游排放的速率。扩散轨迹也受到纽约海岸线顶端海岸线的特殊地理位置的影响。北风会导致先前形成的沿岸捕集的羽流向海上移动，并沿着长岛海岸带动新的羽流。南风引起强烈的沿海喷射，有效地将淡水排到南方。东风有助于从河口输出淡水，并有利于淡水在Raritan湾口外的回流隆起中积聚。西风阻碍了力登湾的淡水出口。模拟羽流的动量平衡表明，浮力和风力在很大程度上决定了水平淡水扩散的模式，包括淡水在周围环境中的扩散，更多的咸水和凸起的形成。

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