Downwind evolution of aeolian saltation across an artificially constructed coastal berm

Strypsteen, Glenn; Sloover, Lars De; Wulf, Alain De; Rauwoens, Pieter

doi:10.1016/j.aeolia.2020.100627

Cited by 7 publications

(13 citation statements)

References 54 publications

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“…This has significant implications for estimating the total mass flux, which may be underestimated or overestimated. However, a study conducted by Strypsteen et al (2020), where vertical flux profiles and total flux were characterized with MWAC sand traps, showed to be a robust method of measurement. Analysis between two simultaneous transport measurements with MWAC sand traps and Sherman traps from Campos (2018) spanning the saltation layer from surface to 30 cm above the surface were similar.…”

Section: Discussionmentioning

confidence: 99%

“…This has significant implications for estimating the total mass flux, which may be underestimated or overestimated. However, a study conducted by Strypsteen et al . (2020), where vertical flux profiles and total flux were characterized with MWAC sand traps, showed to be a robust method of measurement.…”

Section: Methodsmentioning

confidence: 98%

“…To evaluate the rate of aeolian sand transport, nine Modified Wilson and Cook (MWAC) vertical sand traps were exposed to the sand-laden wind (Figure 3A). They have been employed extensively in a number of studies ( e.g ., Strypsteen, 2019; Strypsteen et al ., 2020; Strypsteen, van Rijn, and Rauwoens, 2021), with efficiencies ranging from 42% to 120% ( e.g ., Goossens and Offer, 2000; Poortinga et al ., 2013; Sterk and Raats, 1996; Van Pelt, Peters, and Visser, 2009; Youssef et al ., 2008). The disadvantages are that they are not easily installed when quick decisions must be made during transport events and that they do not measure transport in the lower 0.05 m of the bed, which is where most transport occurs.…”

Section: Methodsmentioning

confidence: 99%

“…A long fetch length is also preferable because issues with fetch effects can arise. The fetch effect is the increase in sand flux across a beach surface in the downwind wind direction until a maximum is reached and over-shoots to a lower equilibrium (Davidson-Arnott, MacQuarrie, and Aagaard, 2005; Delgado-Fernandez, 2010; Lynch, Jackson, and Cooper, 2016; Shao and Raupach, 1992; Strypsteen et al ., 2020). This maximum is reached exponentially beyond a certain critical fetch distance, which is also influenced by surface moisture according to Bauer and Davidson-Arnott (2003).…”

Section: Introductionmentioning

confidence: 99%

“…Potential transport rates typically differ from reported values across this complex section of the beach (Sherman et al ., 1998; Strypsteen, van Rijn, and Rauwoens, 2021; van Rijn and Strypsteen, 2020). The surface roughness elements disrupt the air flow, continuously adapt the threshold wind speed, and affect aeolian sediment transport (van der Wal, 1998a).…”

Section: Introductionmentioning

confidence: 99%

See 4 more Smart Citations

Aeolian Sand Transport on a Natural Beach with Shells and Moist Sand Patches

Strypsteen

Rauwoens

2023

Journal of Coastal Research

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Section: Discussionmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 98%

Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Aeolian Sand Transport on a Natural Beach with Shells and Moist Sand Patches

Strypsteen

Rauwoens

2023

Journal of Coastal Research

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Fetch‐driven aeolian sediment transport on a sandy beach: A new study

Strypsteen,

Delgado‐Fernandez,

Derijckere

et al. 2024

Earth Surf Processes Landf

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This study examines the effect of fetch distance on aeolian sediment transport and the corresponding growth rate of aeolian transport rate on a sandy beach under varying wind speeds. Eight experiments were conducted on both dry and intertidal beach areas, with wind speeds ranging from 9 to 17 m/s. Vertically stacked sand traps were used to measure transport rates over distances up to 100 m, with experiments lasting 20–40 minutes. Results indicate an initial increase in transport rate until the critical fetch distance, followed by a subsequent decrease in sediment transport with further fetch distance. Critical fetch distances, corresponding to maximum transport rates, ranged from 23.8 to 103.5 m. A strong linear correlation was observed between wind speed and critical fetch distance, suggesting that higher wind speeds necessitate longer fetch distances for maximum transport. Furthermore, established formulations by van Rijn and Strypsteen are tested to estimate maximum sediment transport and critical fetch distance based on grain‐related shear velocity. Combining all experiments showed that the growth rate in transport up to the point of critical fetch can be best described by a trigonometric function. These findings contribute to a better understanding of the fetch effect on aeolian sediment dynamics in coastal sandy environments.

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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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Downwind evolution of aeolian saltation across an artificially constructed coastal berm

Cited by 7 publications

References 54 publications

Aeolian Sand Transport on a Natural Beach with Shells and Moist Sand Patches

Aeolian Sand Transport on a Natural Beach with Shells and Moist Sand Patches

Fetch‐driven aeolian sediment transport on a sandy beach: A new study

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

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