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Authors: Tarquini, S.*
Favalli, M.*
Title: Changes of the susceptibility to lava flow invasion induced by morphological modifications of an active volcano: the case of Mount Etna, Italy
Title of journal: Natural Hazards
Series/Report no.: 2/54(2010)
Publisher: Springer
Issue Date: 2010
DOI: 10.1007/s11069-009-9484-y
Keywords: Lava flow simulation
Digital Elevation Model
Time series
Lava flow hazard maps
Abstract: Changes of the susceptibility to lava flow invasion at Mount Etna are quantified by using lava flow simulations on four Digital Elevation Models documenting the morphostructural modifications of the volcano in the time interval 1986–2007. The probabilistic code DOWNFLOW is used to derive the areas invaded by several thousands of lava flows obtaining, for each DEM, maps of the susceptibility to lava flow invasion and of the lava flow hazard. These maps show, for the first time, the evolution of these surficial properties with time, and render a quantitative image of the effects of topographic changes on the preferential lava flow drainage paths. The results illustrate how the emplacement of new lava flows and the growth of scoria cones affect the probability of inundation by lava flows. We conclude that the persistent activity of this volcano requires a frequent updating of the topography for a reliable lava flow hazard assessment.
Appears in Collections:05.08.99. General or miscellaneous
04.08.08. Volcanic risk
04.08.06. Volcano monitoring
Papers Published / Papers in press

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