Regressió del delta del Llobregat. Efecte de les obres d’enginyeria al riu d’ençà del segle XIX

Coastal Retreat on the Spanish Mediterranean Coast in a Climate Change Context: Effects of the Regulation of the Segura River at Its Mouth and the Coastal Sand Dune in Guardamar del Segura (Alicante, Spain)

“…The direct consequence of this is the production of coastal retreat processes [11]. Some studies have analysed the impact of these works in relation to the sediment transported and deposited along the course of rivers, thereby determining their implications and their impact on the input of sediment in coastal areas [9,18,19].…”

“…On the Mediterranean coast, Prats-Puntí et al [18] analysed the effects of engineering works in the Llobregat River (Catalonia) on the retreat of its delta, which has experienced a retreat of 800 m since the end of the nineteenth century and throughout the twentieth century. The construction of these works, which reduce the frequency of floods and retain sediment in situations of average flows, is responsible for the regression of the coastline [18].…”

“…On the Mediterranean coast, Prats-Puntí et al [18] analysed the effects of engineering works in the Llobregat River (Catalonia) on the retreat of its delta, which has experienced a retreat of 800 m since the end of the nineteenth century and throughout the twentieth century. The construction of these works, which reduce the frequency of floods and retain sediment in situations of average flows, is responsible for the regression of the coastline [18]. Blay and Ávila [11] analysed the coastal retreat that is experienced at the Ebro Delta since the impact of Storm Gloria (January 2020) and as a result of the construction of reservoirs upstream to regulate the supply of the Ebro basin, which is generating a drastic reduction in the sediment deposited on the coast and leading to a coastal retreat process.…”