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Several linear models have been proposed for islet evolution. These models do not address the non-linear processes contributing to islet evolution or account for feedback between islet morphology and the fluid dynamics leading to sediment sequestration. The non-linear Sediment Allocation Model (SAM) has also been proposed for atoll-islet evolution. The SAM is a quantitative model of atoll-islet development...
Reef-islands on the rims of atolls are deposits of unconsolidated reef sediment that have accumulated as a result of sediment transportation processes. Reef-islands appear especially vulnerable to changing environmental conditions particularly regarding the impact of sea-level rise. The morphodynamic processes involved in the development of these landforms, however, are poorly understood and difficult...
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