Coupled Physical Numerical Models of the Nonlinear Interaction between Coastal-Trapped Waves, Mean Current and Complex Topography

这个项目旨在了解海岸捕获波（CTWs）如何与斜压流和地形（峡谷和山脊）相互作用。这种相互作用可能发挥重要作用的潜在地区是大澳大利亚湾和黑海。最近的模型结果表明，逆行流中的正压大陆架波在经历地形散射后可以产生强烈的中尺度涡旋和跨大陆架交换，因此该项目将使用实验室实验来观察散射是否会导致强烈的中尺度运动。实验室实验也将用于寻找CTW传播中的亚临界和超临界转变。主要的实验工具将是实验室实验在一个旋转槽均匀，两层和线性分层配置。该坦克将配备平滑的大陆架斜坡地形和陡峭的地形，如峡谷和山脊。背景电流将通过脉冲改变旋转速率或通过引入源-汇流来引入。实验室实验将辅以使用现代沿海环流模式的数值模拟。实验室实验的数据将用于验证数值模式，然后数值模式将用于将结果扩展到更多的海洋状态。

0137197/BoyerThis project seeks to understand how coastally trapped waves (CTWs) interact with baroclinic currents and topography (canyons and ridges). Potential regimes where such interactions may be important are the Great Australian Bight and the Black Sea. Motivated by recent model results that suggest that a barotropic shelf wave in a retrograde current can generate strong mesoscale vortices and cross-shelf exchange after undergoing topographic scattering, the project will use laboratory experiments to see if scattering leads to strong mesoscale motion. Laboratory experiments will also be used to look for subcritical and supercritical transitions in CTW propagation. The main experimental tool will be laboratory experiments in a rotating tank in homogeneous, two-layer, and linearly stratified configurations. The tank will be fitted with both smooth shelf-slope topography, and abrupt topography such as canyons and ridges. Background currents will be introduced by impulsively varying the rotation rate or by introducing a source-sink flow. The laboratory experiments will be complemented with numerical modeling using modern coastal circulation models. Data from the laboratory experiments will be used to validate the numerical models and then the numerical models will be used to extend results to more oceanic regimes.