...
首页> 外文期刊>Journal of Physical Oceanography >Coastally Generated Near-Inertial Waves
【24h】

Coastally Generated Near-Inertial Waves

机译:海岸产生的近惯性波

获取原文
获取原文并翻译 | 示例
           

摘要

Wind directly forces inertial oscillations in the mixed layer. Where these currents hit the coast, the no-normal-flow boundary condition leads to vertical velocities that pump both the base of the mixed layer and the free surface, producing offshore-propagating near-inertial internal and surface waves, respectively. The internal waves directly transport wind work downward into the ocean's stratified interior, where it may provide mechanical mixing. The surface waves propagate offshore where they can scatter over rough topography in a process analogous to internal-tide generation. Here, we estimate mixed layer currents from observed winds using a damped slab model. Then, we estimate the pressure, velocity, and energy flux associated with coastally generated near-inertial waves at a vertical coastline. These results are extended to coasts with arbitrary across-shore topography and examined using numerical simulations. At the New Jersey shelfbreak, comparisons between the slab model, numerical simulations, and moored observations are ambiguous. Extrapolation of the theoretical results suggests that O(10%) of global wind work (i.e., 0.03 of 0.31 TW) is transferred to coastally generated barotropic near-inertial waves.
机译:风直接迫使混合层中的惯性振荡。在这些水流到达海岸的地方,非正常流动的边界条件导致垂直速度,从而泵送混合层的底部和自由表面,分别产生近海惯性内部和表面波。内部波将风直接向下传送到海洋的分层内部,在其中可以提供机械混合。表面波在海上传播,在那里它们可以类似于内部潮汐产生的过程散布在粗糙的地形上。在这里,我们使用阻尼平板模型根据观测到的风估计混合层电流。然后,我们估算与垂直海岸线上沿海产生的近惯性波相关的压力,速度和能量通量。这些结果扩展到具有任意跨海地形的海岸,并使用数值模拟进行了检验。在新泽西州的货架上,平板模型,数值模拟和停泊观测值之间的比较是模棱两可的。理论结果的推断表明,全球风能的O(10%)(即0.31 TW的0.03)转移到了沿海产生的正压近惯性波上。

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