GEOmedia (Sep 2012)
Il rilievo laser come tecnica di monitoraggio per i fenomeni di instabilità dei versanti degli edifici vulcanici : il caso dell'Isola di Stromboli
Abstract
La metodologia di rilievo mediante Laser Scanner Aviotrasportato (ALS) per la ricostruzione dettagliata della morfologia consente l’acquisizione di dati tridimensionali di alta precisione da utilizzare per il monitoraggio di fenomeni franosi in evoluzione. Abstract The laser survey technique for monitoring the instability of volcanoes: the case of Stromboli In volcanic areas the flank instability represents an additional hazard for the surrounding inhabited areas. Landslides, ranging from small to large size, can easily develop both due to the weakness of the volcanic superficial layers and to the destabilizing effects from deformation and seismicity related to the volcanic activity. These phenomena are particularly dangerous along the coast line of volcanic islands because they cannot easily detected in a safe way. The use of remote sensing data represent an useful contribution to the risk assessment and hazard evaluation. Multi-temporal analy- ses based on the 2006 and 2009 Digital Surface Models (DSMs), generated from an Airborne Laser scanner on the Stromboli Island permitted to detect active landslides and to extract additional information useful to hazard assessment and related mitigation actions.
