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Monitoring aeolian activity during a storm event using a video system
Montreuil, A.-L.; Chen, M.; Brand, E.; Dan, S. (2017). Monitoring aeolian activity during a storm event using a video system, in: Proceedings of Coastal Dynamics 2017, 12-16 June 2017, Helsingør, Denmark. pp. 461-470
In: (2017). Proceedings of Coastal Dynamics 2017, 12-16 June 2017, Helsingør, Denmark. Danish Coastal Authorities/University of Copenhagen/Technical University of Denmark/Geological Survey of Denmark and Greenland/DHI Water & Environment: [s.l.]. , meer
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Documenttype: Congresbijdrage
Trefwoord
Author keywords
    beach morphology, erosion/deposition, potential sand supply, macro-tidal
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Abstract
    Aeolian sand transport was assessed from an Argus camera system located on a macro-tidal beach along the Belgian coast over a period of 4 days covering a storm surge. Over the study period, observed sand transport event occurred for 9.5% of the time when strong high oblique onshore wind (9.8m/s) combined with a water level below 3.75m TAW moved sand to the beach. Measured post-storm topographic profiles indicated an accretion on the total beach upper beach of 0.70m3/m, which was in agreement with the estimated potential sand supply of 0.91m3/m for the observed sand transport event and expected night transport events. Thus, there was a narrow temporal window in which sediment can be supplied to the beach before and after the storm surge. Also, the study highlights that the presence of berm with a relative height of 3m segments sediment transfer to the backshore.
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