Figure 8
Validation of long-term shoreline trends. Validation of SM SDS trends against CoastSat SDS trends in southwest France. Spatial distribution of the percentage N of available yearly composites over 2000–2020 for (a) SM and (b) CoastSat, with (c) the thick blued line indicating transects where CoastSat and SM are both available with \(N_y>80\%\) and the coloured polygons showing the areas where the two datasets are compared. (d–g) Comparison of CoastSat (blue) and SM (red) yearly SDS position deviation around the mean and long-term trends (dashed lines). In each panel, the shoreline trend dS/dt and correlation coefficient R between the two datasets are provided. Truc Vert beach location is indicated in (c).
