We present here a novel method to assess coastal vulnerability to tsunami based on GIS (Geographical Information System), ASTER imagery (Advanced Spaceborn Thermal Emission and Reflection Radiometer) and SRTM-3 elevation model (Shuttle Radar Topography Mission-3). We developed this method within the CRATER project (Coastal Risk Analysis for Tsunamis and Environmental Remediation) and applied it on the whole western coast of Thailand. As result, we generated a set of vectorial vulnerability maps with a geometrical resolution of 90m (scale 1:450 000). This approach provides a low-cost and quick tool to analyse extended coastal tracts, and prioritize investments for prevention measures or for further high-resolution analysis. Un nuovo approccio (metodo CRATER) per la stima a scala regionale della vulnerabilità a tsunami mediante immagini ASTER Riassunto Il lavoro presentato introduce un nuovo metodo per la stima della vulnerabilità costiera a tsunami, basato sul GIS (Geographical Information System), sull'impiego di immagini ASTER (Advanced Spaceborn Thermal Emission and Reflection Radiometer) e modelli di elevazione SRTM-3 (Shuttle Radar Topography Mission-3). Il metodo è stato sviluppato nell'ambito del progetto CRATER (Coastal Risk Analysis for Tsunamis and EnvironmentalRemediation) ed applicato all'intera costa occidentale della Tailandia. I risultati consistono in un set di mappe vettoriali della vulnerabilità con risoluzione di 90m (scala 1:450 000). Tale approccio costituisce un mezzo relativamente economico e veloce per l'analisi di estesi tratti costieri e per la gestione di investimenti in misure di prevenzione o in ulteriori analisi ad alta risoluzione. Tsunami, Vulnerabilità costiera, ASTER, GIS, Uso Suolo. Dall'Osso et al. Tsunami vulnerability at the regional scale: the CRATER method Parole chiave:
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