• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Deep-Sea Research >Ocean circulation in the Great Australian Bight in an eddy-resolving ocean reanalysis: The eddy field, seasonal and interannual variability
【24h】

Ocean circulation in the Great Australian Bight in an eddy-resolving ocean reanalysis: The eddy field, seasonal and interannual variability

机译：解析涡旋的海洋分析中大澳大利亚湾的海洋环流：涡旋场，季节和年际变化

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 ocean circulation in the Great Australian Bight (GAB) is dominated by the surface-intensified Leeuwin Current (LC) over the outer continental shelf, and the Flinders Current farther offshore. In the GAB, the LC flows eastwards and varies seasonally, with strongest currents of up to 0.8 m/s (at 130.5°E), bringing warm and salty waters as far east as western Tasmania. The Flinders Current flows westwards, as an undercurrent at depths of around 500 m over the continental slope and at the surface offshore of the LC. Off the shelf, the GAB is rich in mesoscale eddies, with surface-intensified currents of up to 0.4 m/s that are coherent over the full water depth (getting weaker with depth). Within deep-water eddies, isotherms are displaced vertically by up to 200 m. Eddies in the eastern GAB are most energetic in austral winter and spring - coincident with the seasonal weakening of the LC. The eastern-most “penetration” of GAB eddies occurs in austral winter - when the LC starts to weaken. We hypothesise that the horizontal shear associated with the LC generates eddies in the eastern GAB. The volume transport of the LC at the head of the GAB is typically between 1 and 7 Sv, with a clear seasonal cycle, and the interannual variability of LC transport is up to 2 Sv.
机译：大澳大利亚湾（GAB）的海洋环流主要由外大陆架上的表面强化的吕温洋流（LC）和更远的海上弗林德斯洋流所主导。在GAB中，LC向东流动并随季节变化，其最大水流高达0.8 m / s（在130.5°E），将温暖和咸水带到塔斯马尼亚西部。弗林德斯潮流向西流动，是在大陆斜坡和LC海上近地深约500μm的暗流。现成的GAB富含中尺度涡流，其表面增强电流高达0.4µm / s，在整个水深上都具有连贯性（随深度变弱）。在深水涡流中，等温线在垂直方向上的位移最大为200µm。 GAB东部的涡流在冬季的南方和春季最为活跃，这与LC的季节性减弱相吻合。 GAB涡流的最东端“渗透”发生在南方冬季-当LC开始减弱时。我们假设与LC相关的水平剪切在东部GAB内产生涡流。在GAB顶部，LC的体积输运通常在1至7 Sv之间，具有明显的季节性周期，并且LC输运的年际变化高达2 Sv。

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