Potential Vorticity Mixing

9529824 Young 将通过构造流函数来发展对位涡混合和均匀化的机械理解，流函数是运动方程的解，并且其中粒子轨迹表现出对初始条件的敏感依赖性。主要目的是证明曲折边界流辐射的罗斯贝波的临界层吸收导致位涡的不可逆变形和侧翼循环环流的位涡均匀化。 这项研究的另一个目的是检查纬向流中的位涡，特别是不稳定波非线性平衡过程中的边际稳定性和位涡演化。

9529824 Young A mechanistic understanding of potential vorticity mixing and homogenization will be developed by constructing streamfunctions that are solutions of the equations of motion, and in which particle trajectories exhibit sensitive dependence on ilitial conditions. The main objective is to show that critical layer absorption of Rossby waves radiated by meandering boundary currents leads to irreversible deformation of potential vorticity and the potential vorticity homogenization of the flanking recirculating gyres. Another objective of this study is to examine potential vorticity in zonal flows, and in particular the marginal stability and potential vorticity evolution during the nonlinear equilibration of unstable waves.