Modeling Multi‐Fraction Coastal Aeolian Sediment Transport With Horizontal and Vertical Grain‐Size Variability

IJzendoorn, Christa van; Hallin, Caroline; Reniers, A.J.H.M.; Vries, Sierd de

doi:10.1029/2023jf007155

Cited by 5 publications

(1 citation statement)

References 56 publications

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“…AeoLiS models sediment transport and morphological changes associated with wind-driven sediment transport in coastal systems, including capabilities to introduce supply limitations associated with moisture and sediment texture effects, as well as spatial variability in bed shear stress driven by topographic effects on flow acceleration and by vegetation presence. Recent applications of the AeoLiS model have demonstrated capabilities to specifically simulate multi-fraction wind-driven sediment transport [37], barchan and parabolic dunes [38], vegetative effects on sediment trapping [25], and artificial dune evolution [39]. AeoLiS aims to characterize the dominant processes contributing to wind-driven dune growth in coastal systems, but it has not directly included marine effects on beach and dune erosion.…”

Section: Previous Modeling Work Synthesizing Physical and Ecological ...mentioning

confidence: 99%

Exploring Ecological, Morphological, and Environmental Controls on Coastal Foredune Evolution at Annual Scales Using a Process-Based Model

Heminway,

Cohn,

Davis

et al. 2024

Sustainability

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Coastal communities commonly rely upon foredunes as the first line of defense against sea-level rise and storms, thus requiring management guidance to optimize their protective services. Here, we use the AeoLiS model to simulate wind-driven accretion and wave-driven erosion patterns on foredunes with different morphologies and ecological properties under modern-day conditions. Additional sets of model runs mimic potential future climate changes to inform how both morphological and ecological properties may have differing contributions to net dune changes under evolving environmental forcing. This exploratory study, applied to represent the morphological, environmental, and ecological conditions of the northern Outer Banks, North Carolina, USA, finds that dunes experiencing minimal wave collision have similar net volumetric growth rates regardless of beach morphology, though the location and density of vegetation influence sediment deposition patterns across the dune profile. The model indicates that high-density, uniform planting strategies trap sediment close to the dune toe, whereas low-density plantings may allow for accretion across a broader extent of the dune face. The initial beach and dune shape generally plays a larger role in annual-scale dune evolution than vegetation cover. For steeper beach slopes and/or low dune toe elevations, the model generally predicts wave-driven dune erosion at the annual scale.

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Section: Previous Modeling Work Synthesizing Physical and Ecological ...mentioning

confidence: 99%

Exploring Ecological, Morphological, and Environmental Controls on Coastal Foredune Evolution at Annual Scales Using a Process-Based Model

Heminway,

Cohn,

Davis

et al. 2024

Sustainability

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Three years of morphological dune development after planting marram grass on a beach

Strypsteen,

Bonte,

Taelman

et al. 2024

Earth Surf Processes Landf

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Coastal regions globally face escalating challenges from climate change, including rising sea levels and intensified storm events. To address these threats, coastal resilience emerges as a critical paradigm advocating the integration of nature‐based solutions with traditional engineering approaches. Coastal dunes, acting as protective barriers, offer a promising avenue. This three‐year study assesses the efficacy of an artificial dune system to address local sand‐related nuisances on the adjacent seawall featuring planted marram grass in Oosteroever, Belgium. The focus is on understanding sediment accumulation, dune morphology and vegetation development. The results demonstrate a significant increase in dune height, reaching up to 2 m in the zones planted with marram grass, surpassing the height of the adjacent seawall. Comprehensive profiles and drone surveys revealed consistent dune growth of 27 m3/m, which contrasted with the substantial erosion in the adjacent unvegetated beach areas of up to 30 m3/m. One storm event caused dune toe erosion of 1.5 m3/m, but the dune demonstrated rapid recovery through natural aeolian processes. Marram grass development was not impacted by the initial planting configuration and density and was more pronounced at the perimeter edges of the dune. This study highlights the success of the ‘dune‐in‐front‐of‐a‐dike’ approach, offering insights for sustainable coastal resilience strategies.

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Determination of Grain Sorting in an Accretion Profile Caused by Cross-Shore Sediment Transport

Uzlu

2023

Thalassas

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Modeling Multi‐Fraction Coastal Aeolian Sediment Transport With Horizontal and Vertical Grain‐Size Variability

Cited by 5 publications

References 56 publications

Exploring Ecological, Morphological, and Environmental Controls on Coastal Foredune Evolution at Annual Scales Using a Process-Based Model

Exploring Ecological, Morphological, and Environmental Controls on Coastal Foredune Evolution at Annual Scales Using a Process-Based Model

Three years of morphological dune development after planting marram grass on a beach

Determination of Grain Sorting in an Accretion Profile Caused by Cross-Shore Sediment Transport

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