Inlet-driven processes are capable of modifying the adjacent shoreline. However, few studies have attempted to understand how these changes affect coastal dunes. The present study aims to understand how shoreline changes induced by shoal attachment affect coastal dunes. A barrier island in the Netherlands is used as a case study. Both bathymetric and topographic annual data were analysed, together with the application of a cellular automata model for dune development. The objective of the model is to explore idealised scenarios of inlet-driven shoreline movements. With the model, ten different scenarios were examined regarding beach width increase and rate of alongshore spreading of the shoal. Field data showed that, for the case study, dune volume and shoal attachments could not be directly linked. Instead, rates of dune volume change differed significantly only due to long-term ebb-tidal delta evolution. Such morphological evolution oriented the beach towards the main wind direction, increasing overall aeolian transport potential. Modelling results showed that shoals significantly increased dune volumes only on three out of ten scenarios. This suggests that beach width increase, and rate of alongshore sediment spreading, determine whether the shoal will influence dune growth. Therefore, within the studied time-scale, local rates of dune growth are only increased if shoals are capable of increasing the beach width significantly and persistently.

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海滩沙丘动力学与浅滩依附过程之间的关系：以泰尔斯海灵岛为例

入口驱动的过程能够修改相邻的海岸线。但是，很少有研究试图了解这些变化如何影响沿海沙丘。本研究旨在了解浅滩附着引起的海岸线变化如何影响沿海沙丘。以荷兰的障碍岛为例。分析了测深和地形年度数据，以及细胞自动机模型在沙丘发育中的应用。该模型的目的是探索进气驱动海岸线运动的理想方案。使用该模型，研究了关于海滩宽度增加和浅滩沿岸扩散速率的十种不同情况。现场数据表明，对于案例研究，沙丘体积和浅滩附件无法直接关联。代替，沙丘体积变化率的差异仅归因于长期的潮汐三角洲演变。这种形态演变使海滩朝向主风向，从而增加了整体风沙运输潜力。建模结果表明，浅滩仅在十分之三的情况下显着增加了沙丘体积。这表明海滩宽度的增加以及沿岸沉积物的扩散速度决定了浅滩是否会影响沙丘的生长。因此，在所研究的时间范围内，仅当浅滩能够显着且持久地增加海滩宽度时，沙丘的局部生长速率才会增加。建模结果表明，浅滩仅在十分之三的情况下显着增加了沙丘体积。这表明海滩宽度的增加以及沿岸沉积物的扩散速度决定了浅滩是否会影响沙丘的生长。因此，在所研究的时间范围内，仅当浅滩能够显着且持久地增加海滩宽度时，沙丘的局部生长速率才会增加。建模结果表明，浅滩仅在十分之三的情况下显着增加了沙丘体积。这表明海滩宽度的增加以及沿岸沉积物的扩散速度决定了浅滩是否会影响沙丘的生长。因此，在所研究的时间范围内，仅当浅滩能够显着且持久地增加海滩宽度时，沙丘的局部生长速率才会增加。