A Chronological Database about Natural and Anthropogenic Sinkholes in Italy.

Sinkholes are a widespread geological hazard, typical of karst lands, where they generally originate as collapse features related to presence of underground voids. Nevertheless, other types of sinkholes can be formed through solution, suffusion and sagging processes. Sinkholes can also be originated in relation to artificial cavities, excavated by man in past times. In Italy, sinkholes interest large sectors of the country, given the very long history of Italy with an intense utilization of the underground. They cause serious damage to infrastructures, economic activities, and human health every year. We present a catalogue on natural and anthropogenic sinkholes in Italy, as the first step toward evaluation of the sinkhole hazard. After introducing sinkholes, which is definitely a highly underrated type of disaster in Italy, we point out their occurrence in the country. We illustrate the methodology used to build the database, with particular focus on accuracy and reliability of the data. Collecting information from different types of sources, a catalogue of some 1190 sinkhole events is built. Database structure and data analysis are then illustrated. Eventually, we draw some conclusions on the likely uses of our work by providing recommendations for environmental management on this very delicate issue. [ABSTRACT FROM AUTHOR]

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