Aimed at analysing the peculiar conditions which lead to sinkhole occurrence in Southern Italy, a set of cases in the plain areas is discussed. In Campania, the plains are underlain by alluvial deposits with intercalations of volcaniclastic
sediments. Sinkholes are generally located along the Tyrrhenian margin of the carbonate massifs or within intramontane Apennine basins. In Apulia, a flat and elongated peninsula, most of the cases occur on calcarenites overlying limestone bedrock along
the coast. In Calabria, the surveyed cases seem to be attributable mainly to earthquake-induced liquefaction. These results highlight the possibility of further subsidence events in the considered regions, as well as in other comparable areas of the country.
Extreme hydrological events in karst areas of Slovenia, the case of the Unica River basin
In the case of particularly extreme hydrological conditions in the autumn of 2008, detailed analyses of the recharge-discharge regime and the interrelationship of flooding on two typical and connected karst poljes (Cerknica and Planina