The role of the Coriolis effect in the initial formation of bottom patterns in a tidal channel is studied by means of a linear stability analysis. The key finding is that the mechanism generating oblique tidal sand ridges on the continental shelf is also present in confined tidal channels. As a result, the Coriolis effect causes the fastest growing pattern to be a combination of tidal bars and oblique tidal sand ridges. Similar as on the continental shelf, the Coriolis-induced torques cause anticyclonic residual circulations around the ridges, which lead to the accumulation of sand above the ridges. Furthermore, an asymptotic analysis indicates that the maximum growth rate of the bottom perturbation is slightly increased by the Coriolis effect, while its preferred wavelength is hardly influenced.

通过线性稳定性分析研究了科里奥利效应在潮汐通道底部图案初始形成中的作用。关键发现是，在大陆架上产生倾斜潮汐沙脊的机制也存在于封闭的潮汐通道中。结果，科里奥利效应导致增长最快的模式是潮汐条和倾斜潮汐沙脊的组合。与大陆架类似，科里奥利引起的扭矩会在山脊周围引起反气旋残余循环，从而导致山脊上方积聚沙子。此外，渐近分析表明，底部摄动的最大生长速率由于科里奥利效应而略有增加，而其优选波长几乎没有受到影响。