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An analysis of debris-flow events in the Sardinia Island (Thyrrenian Sea, Italy) |
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| Authors: | Laura Turconi Sunil Kumar De Francesca Demurtas Luca Demurtas Bruna Pendugiu Domenico Tropeano Gabriele Savio |
| Institution: | 1. Consiglio Nazionale delle Ricerche, Istituto di Ricerca per la Protezione Idrogeologica, UOS Torino, Strada delle Cacce 73, 10135, Turin, Italy 2. Department of Geography and Disaster Management, Faculty of Science, Tripura University, Suryamaninagar, 799022, Tripura (West), India 3. Geologist, Villagrande Strisaili, OG, Italy 4. Department of Territorial and Environmental Engineering, Cagliari University, P.zza D’Armi 19, 09100, Cagliari, Italy |
| Abstract: | On 6 December 2004, the Villagrande Strisaili area (middle-east Sardinia), was struck by debris flows; 330 mm of rainfall took place within 3 h with an hourly intensity of 120 mm, which is far more above than normal for the study area. In the urban center stony and driftwood deposits accounted for a total volume estimated as 10,000 m3. The event claimed huge amount of infrastructural loss and two human lives. According to the chronicle reports, the area experienced two debris-flow events in the last century. The present paper is the outcome of an intensive study of such debris-flow events including their physical processes and geomorphological effects through both field survey and laboratory analysis. |
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