AbstractStudying aeolian sediment transport in coastal areas is challenging. Therefore, a location with a small number of supply-limiting elements (e.g., shells, moisture and vegetation) and a long fetch length is frequently chosen to allow for a better comparison of predicted and observed transport rates (Strypsteen et al., 2021). Many natural beaches, however, contain an abundance of shells and shell fragments/hash due to pounding and fracturing in the surf zone and literature on this topic is rather scarce. Direct field studies on the impact of shells on aeolian sediment transport rates have been limited. This study reports on a two-day measurement campaign on the upper beach of Koksijde, Belgium, where data on aeolian transport rates, mass flux profiles, surface moisture, wind conditions, and grain size distributions were collected. The goal of the experiment was to measure aeolian sand transport on the upper beach as input for dune growth and to find out how a shell pavement affected these transport rates during a strong, oblique onshore wind.
Bagnold (1954): The Physics of Blown Sand and Desert Dunes, 2nd Edition. Methuen, London.
Hoonhout, de Vries (2017): Field measurements on spatial variations in aeolian sediment availability at the Sand Motor mega nourishment. Aeolian Research, 24, 93–104.
McKenna Neuman, Li, Nash (2012): Micro-topographic analysis of shell pavements formed by aeolian transport in a wind tunnel simulation. Journal of Geophysical Research: Earth Surface, 117(4), 1–16.
Strypsteen, De Sloover, De Wulf, Rauwoens, (2020): Downwind evolution of aeolian saltation across an artificially constructed coastal berm. Aeolian Research, 47.
Strypsteen, Van Rijn, Rauwoens (2021): Comparison of equilibrium sand transport rate model predictions with an extended dataset of field experiments at dry beaches with long fetch distance. Aeolian Research, 52.
Tan, Zhang, Qu, Zhang, An, Wang (2013): Aeolian sand transport over Gobi with different gravel coverages under limited sand supply: A mobile wind tunnel investigation. Aeolian Research, 11, 67–74.
Van Rijn (2022): A fully predictive model for aeolian sand transport, part 2: Description and calibration of models and effect of moisture and coarse materials. Coastal Engineering, 171.
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