论文标题
斯托克斯在珊瑚
Stokes drift through corals
论文作者
论文摘要
我们研究了全渗透漂移速度，这是由于表面波动在有效无粘性流体中的表面波动而覆盖了有限深度的饱和多孔床。 Previous work in this area either neglects the large-scale flow between layers [Phillips (1991)] or only considers the drift above the porous layer [(Monismith (2007)]. We propose a model where flow is described by a velocity potential above the porous layer, and by Darcy's law in the porous bed, with derived matching conditions at the interface between the two layers. The damping effect of the porous bed requires a complex wavenumber k均与垂直的流体漂移，与纯流体层中的stokes（1847）衍生而来，我们的工作为浅水珊瑚礁提供了物理模型，在浅海中，在上面和珊瑚礁内的液体都非常重要比较我们的模型与Koehl \＆Hadfield（2004）的测量结果，并解释了Koehl等人（2007年）中描述的垂直漂移效应，后者测量了珊瑚礁层和（相对较浅的）海上的交换。
We investigate the all-penetrating drift velocities, due to surface wave motion in an effectively inviscid fluid that overlies a saturated porous bed of finite depth. Previous work in this area either neglects the large-scale flow between layers [Phillips (1991)] or only considers the drift above the porous layer [(Monismith (2007)]. We propose a model where flow is described by a velocity potential above the porous layer, and by Darcy's law in the porous bed, with derived matching conditions at the interface between the two layers. The damping effect of the porous bed requires a complex wavenumber k and both a vertical and horizontal Stokes drift of the fluid, unlike the solely horizontal drift first derived by Stokes Stokes (1847) in a pure fluid layer. Our work provides a physical model for coral reefs in shallow seas, where fluid drift both above and within the reef is vitally important for maintaining a healthy reef ecosystem [Koehl et al. (1997), Monismith (2007)]. We compare our model with measurements by Koehl \& Hadfield (2004) and also explain the vertical drift effects described in Koehl et al. (2007), who measured the exchange between a coral reef layer and the (relatively shallow) sea above.
