Kras wybrzezy morskich - rozwoj procesow krasowych w strefie oddzialywania wod slonych is slodkich (na przyladzie Apulii, Poludinowe Wlochy).

Along the sea coast karst ground water flow is highly complicated by inland encroachment of sea waters. In porous intensively fissured rocks, karst waters form aquifer of fresh waters floating on marine ground waters. Hydrogeological evidence from Apulia shows the greatest values of carbonate content and flow velocity in contact zone between fresh and salt waters. This effect may be explained by increase of solubility of gradually mixed fresh and salt ground waters. With the salinity up to 0.5-1%, the karst ground waters are aggressive and above this value they are oversaturated with CaCO₃. Contrary to the general opinion that coastal submarine karst pathways were formed during the low sea level, the idea is presented of the active phreatic karst evolution in the coastal zone.-from English summary