NEW SHORE PROTECTION WORKS ALONG THE ROMAN SANDY BEACHES

The beaches at the two sides of the microtidal river Tiber convex delta are eroding for over 60 years due to the lack of sediment supply and significant positive gradients of the longshore transport (Iadanza and Napolitano, 2006). Various defense interventions have been made over time, particularly at Ostia (southern side) and at Fregene (northern side), including a novel “perched beach” scheme (Ferrante et al. 1993), pure sand nourishments and groins. This coastal area is highly urbanized with a busy and widespread seaside tourism from Spring until Autumn because of the proximity to Rome. Therefore, several protection works were built over the years in order to reduce the loss of seashore caused by the coastal erosion.