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NARROW
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Europe
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Southern Europe
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Italy
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Sicily Italy
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Mount Etna (1)
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Western Europe
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France
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Auvergne (1)
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Puy-de-Dome France
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Chaine des Puys (1)
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Primary terms
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data processing (1)
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Europe
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Southern Europe
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Italy
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Sicily Italy
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Mount Etna (1)
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Western Europe
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France
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Auvergne (1)
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Puy-de-Dome France
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Chaine des Puys (1)
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land use (2)
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roads (1)
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SCIARA: cellular automata lava flow modelling and applications in hazard prediction and mitigation
Abstract The use of thematic volcanic hazard maps is essential for policy managers and administrators in land use planning and to determine the best form of action during emergencies. In particular, hazard maps are a key tool in emergency management and are used to describe the threat expected at a certain location in the event of future eruptions. We applied the latest version of the SCIARA lava flow cellular automata model using parallel computing through general purpose graphics processing units technology to derive lava flow hazard maps for Mt Etna, Sicily. The methodology relies on an accurate analysis of the past behaviour of the volcano and is appropriate for land use planning and civil defence applications.
Testing a geographical information system for damage and evacuation assessment during an effusive volcanic crisis
Abstract Using two hypothetical effusive events in the Chaîne des Puys (Auvergne, France), we tested two geographical information systems (GISs) set up to allow loss assessment during an effusive crisis. The first was a local system that drew on all immediately available data for population, land use, communications, utility and building type. The second was an experimental add-on to the Global Disaster Alert and Coordination System (GDACS) global warning system maintained by the Joint Research Centre (JRC) that draws information from open-access global data. After defining lava-flow model source terms (vent location, effusion rate, lava chemistry, temperature, crystallinity and vesicularity), we ran all available lava-flow emplacement models to produce a projection for the likelihood of impact for all pixels within the GIS. Next, inundation maps and damage reports for impacted zones were produced, with those produced by both the local system and by GDACS being in good agreement. The exercise identified several shortcomings of the systems, but also indicated that the generation of a GDACS-type global response system for effusive crises that uses rapid-response model projections for lava inundation driven by real-time satellite hotspot detection – and open-access datasets – is within the current capabilities of the community.