Quantification of coastal erosion processes in the South - Atlantic Spanish coast. First results

Aerial photographs and historical records have been analyzed to reconstruct the coastal evolution in recent times, while the erosive processes acting in the short term have been studied by means of a field monitoring program. Both working techniques do not always provide the same results and they must be combined for a realistic knowledge of the erosiona! state of the coast. In the Culf of Cádiz two main causes produce coastal erosion: the construction of dams in fluvial basins and the building of coastal engineering structures. A map of morpho-erosive states has been made for the Bay of Cádiz, based on the results of the beach monitoring program and the morphometric measurements made on aerial photographs