High temporal and spatial resolution analysis by SfM-MVS of the morphological changes of the coast in El Picaflor beach, Punta Indio, Buenos Aires, Argentina

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Francisco Aldo Cellone
Luciano López
Guido Bacino
Irene Brayer


The coast of Punta Indio, in the middle estuary of the Río de la Plata, has been affected in recent decades by a strong erosional process. In particular, it has been detected that the erosive rates on the Picaflor beach are higher than those on the rest of the coast. For this reason, the coastal infrastructure, the natural environment, and the tourist activities are compromised. The aim of the work is to carry out an analysis of the coastal hydrodynamics and the evolution of the coastline with high temporal and spatial resolution. A study of coastal hydrodynamics and surveys using SfM-MVS photogrammetry were carried out. From the analysis of the 2D and 3D information, an average value of shoreline retreat of -0.71 m/a was obtained, and a predominance of erosion over accumulation was observed along the entire beach. The triggering factors of the erosive processes may be due to human alterations in the natural environment. Wave impact can have a significant contribution to erosion, directly proportional to the time of wave impact and would occur mainly under medium-intensity wave conditions. The heterogeneities recorded in the beach erosional rates ​​may be due to variations in the general orientation of the coast as well as in the profile of the beach and to differences in land use.

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Cellone, F. A., López, L., Bacino, G., & Brayer, I. (2023). High temporal and spatial resolution analysis by SfM-MVS of the morphological changes of the coast in El Picaflor beach, Punta Indio, Buenos Aires, Argentina. Revista De La Asociación Geológica Argentina, 80(1), 722-737. Retrieved from https://revista.geologica.org.ar/raga/article/view/1633


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