16 years of topographic surveys of rip-channelled high-energy meso-macrotidal sandy beach

Sandy beaches are highly dynamic environments buffering shores from storm waves and providing outstanding recreational services. Long-term beach monitoring programs are critical to test and improve shoreline, beach morphodynamics and storm impact models. However, these programs are relatively rare and mostly restricted to microtidal alongshore-uniform beaches. The present 16-year dataset contains 326 digital elevation models and their over 1.635 × 106 individual sand level measurements at the high-energy meso-macrotidal rip-channelled Truc Vert beach, southwest France. Monthly to bimonthly topographic surveys, which coverage progressively extended from 300 m to over 2000 m to describe the alongshore-variable changes, are completed by daily topographic surveys acquired during a 5-week field campaign. The dataset captures daily beach response at the scale of a storm to three large cycles of interannual variability, through the impact of the most energetic winter since at least 75 years and prominent seasonal erosion/recovery cycles. The data set is supplemented with high-frequency time series of offshore wave and astronomical tide data to facilitate its future use in beach research.

B. Castelle, S. Bujan, V. Marieu, S. Ferreira - Scientific Data 7, article 410

16 years of topographic surveys - Article

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Example of topographic survey product. (a) Example of Truc Vert beach survey with colour bar and grey dots indicating AMSL elevation in metres and individual survey points, respectively, (b) superimposed 20-m spaced beach profiles (grey) and their alongshore average (black) with the horizontal error bars indicating the ±1 cross-shore standard deviation, (c) axis equal DEM.
Example of topographic survey product. (a) Example of Truc Vert beach survey with colour bar and grey dots indicating AMSL elevation in metres and individual survey points, respectively, (b) superimposed 20-m spaced beach profiles (grey) and their alongshore average (black) with the horizontal error bars indicating the ±1 cross-shore standard deviation, (c) axis equal DEM.