Comparison of Accuracy of UAV Aerials and Ground Measurements in the Curonian Spit Dunes

Various detailed means are taken to stabilize the dune surface. One of them is the creation of sand traps, which reduce the amount of sand transmissions. Therefore, it is desirable to develop a methodology that will help evaluate the effectiveness of sand traps. The topographic measurements of dune harm the sand surface and cannot be often - twice a year, when 2-3 months would be a better interval. For detailed monitoring an aerial photogrammetry and automated granulometry method is developing for less invasive measurements. For dune surface analysis were applied topographic mapping and UAV aerial images. These commonly used methods allowed of evaluation the accuracy of photogrammetric methods for the analysis of aeolian processes in dunes and will allow for precise evaluation of changes by doing minimal harm to the surface of the dunes.