Figure 4 | Scientific Reports

Figure 4

From: Sand mining in the Mekong Delta revisited - current scales of local sediment deficits

Figure 4

Detailed map of sand mining sites detected during the dry season 2018 and associated extraction volumes. (a) Residual bathymetry with mining sites between RKM \(-3\) to \(-1\). (b) Residual bathymetry with mining sites between RKM 8 to 11. (c) Residual bathymetry with mining sites between RKM 12 to 15. Red colour indicates areas below the median, while blue colour indicates areas above the median. Shown residual bathymetries are based on an exemplary filter width of 500 m. Note that this filter width does not necessarily reflect the optimised diameter for each mining site according to the ORS algorithm52. Illustrations (ac) were generated using Matlab 2018a (http://mathworks.com).

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