2026-04-14T06:56:25Zhttps://recercat.cat/oai/request

oai:recercat.cat:2117/4491182025-12-17T04:36:26Zcom_2072_1033col_2072_452950

00925njm 22002777a 4500 dc Jiménez Quintana, José Antonio author Sánchez-Arcilla Conejo, Agustín author Bou Térmens, Josep author Ortiz Castelló, Miquel Angel author 1997-09 The use of aerial photographs to estimate short-term shoreline changes, i.e. coastal changes at a monthly scale reflecting seasonal changes in the underlying hydrodynamics, is presented in this paper. To achieve this, a data set of seven vertical aerial photographs with a time span of four months, taken at the Ebro delta (NE Spanish Mediterranean coast) has been used. The method was applied to the analysis of very flat areas, highly dynamic coastal features, storm impacts and to the entire deltaic coast. Although the study area is a microtidal environment, obtained results of the very flat areas analysis do not recommend its use at very short time scales due to meteorological tide influences. The formation, erosion and re-formation of a spit at the river mouth was easily monitored being controlled the evolution of its length, perimeter and subaerial surface. Aerial photos permitted to identify vulnerable zones to impacts of very energetic storms by characterising breaching events along the coast (location and magnitude). Finally, when the method was applied to the entire deltaic coast, a detailed seasonal and spatial distribution of shoreline changes was obtained. The comparison of shoreline rates of change obtained from photos with that obtained from beach profiles shows that the method is reasonably accurate at least for the Ebro delta coast. Peer Reviewed Postprint (published version) http://hdl.handle.net/2117/449118 Àrees temàtiques de la UPC::Enginyeria civil::Enginyeria hidràulica, marítima i sanitària::Ports i costes Shoreline changes Aerial photography Ebro delta Coastal erosion Analysing short-term shoreline changes along the Ebro Delta (Spain) using aerial photographs