...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Physical Oceanography >Waves and the Air-Sea Momentum Budget: Implications for Ocean Circulation Modeling
【24h】

Waves and the Air-Sea Momentum Budget: Implications for Ocean Circulation Modeling

机译：波浪和海气动量预算：对海洋环流建模的启示

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 influence of waves on the mean flow is derived on a rotating earth in the form of interaction stresses and a mass flux in the averaged momentum balance and mass conservation equations, respectively, using Hasselmann's formalism and keeping only the vertical component f of the Coriolis parameter. These stresses, easily computed from a spectral wave model, arise from both spatial gradients in the wave field and the bufferlike role of waves that store a small fraction of the air-sea momentum flux in the initial growth stages (young seas) and restore this momentum to the mean currents, atmosphere, or solid earth when wave energy is dissipated. The practical importance of these wave-induced stresses on the depth-integrated mean circulation is evaluated from wind-wave growth curves and a third-generation spectral wave model. In steady conditions, waves are shown to induce stresses opposed to the wind stress for wave growth stages that may represent up to 10% of the wind stress for short fetches. Assuming simple mean flow responses, wave-induced stresses shall translate into mean sea level variations, which are typically less than 1 mm in the middle of ocean basins but are much larger and significant in shallow areas like continental shelves. The present formulation is consistent with previous studies on wave-driven inertial oscillations and nearshore circulation, cases for which wave effects are known to be much stronger.
机译：使用Hasselmann形式并仅保留科里奥利参数的垂直分量f，分别在平均动量平衡和质量守恒方程中，以相互作用应力和质量通量的形式在旋转地球上得出波浪对平均流量的影响。 。这些应力很容易从频谱波模型中计算出来，既来自波场中的空间梯度，也来自于波浪的缓冲作用，这些波浪在初始生长阶段（青年海）中存储了小部分的海-海动量通量，并将其恢复耗散波能时的平均动量，平均电流，大气或固体地球。从风波生长曲线和第三代谱波模型评估了这些波应力对深度积分平均环流的实际重要性。在稳定条件下，对于波浪生长阶段，显示出波浪会引起与风应力相反的应力，对于短时间取水，波浪可能代表高达10％的风应力。假设简单的平均水流响应，波浪引起的应力将转化为平均海平面变化，在海盆中部通常小于1 mm，但在大陆架等较浅的区域则更大且更大。本公式与先前对波浪驱动的惯性振荡和近岸环流的研究相一致，已知波浪效应要强得多。

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