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Authors: Casalbore, Daniele* 
Di Traglia, Federico* 
Romagnoli, Claudia* 
Favalli, Massimiliano* 
Gracchi, Teresa* 
Tacconi Stefanelli, Carlo* 
Nolesini, Teresa* 
Rossi, Guglielmo* 
Del Soldato, Matteo* 
Manzella, Irene* 
Cole, Paul* 
Casagli, Nicola* 
Chiocci, Francesco Latino* 
Title: Integration of Remote Sensing and Offshore Geophysical Data for Monitoring the Short-Term Morphological Evolution of an Active Volcanic Flank: A Case Study from Stromboli Island
Journal: Remote Sensing 
Series/Report no.: /14 (2022)
Publisher: MDPI
Issue Date: 2022
DOI: 10.3390/rs14184605
Keywords: Stromboli
active volcano
morphological changes
UAV flight
remote sensing
multibeam bathymetry
Subject Classification04.08. Volcanology
Abstract: The Sciara del Fuoco (SdF) collapse scar at Stromboli is an active volcanic area affected by rapid morphological changes due to explosive/effusive eruptions and mass-wasting processes. The aim of this paper is to demonstrate the importance of an integrated analysis of multi-temporal remote sensing (photogrammetry, COSMO-SkyMed Synthetic Aperture Radar amplitude image) and marine geophysical data (multibeam and side scan sonar data) to characterize the main morphological, textural, and volumetric changes that occurred along the SdF slope in the 2020–2021 period. The analysis showed the marked erosive potential of the 19 May 2021 pyroclastic density current generated by a crater rim collapse, which mobilized a minimum volume of 44,000 m^3 in the upper Sciara del Fuoco slope and eroded 350,000–400,000 m^3 of material just considering the shallow-water setting. The analysis allowed us also to constrain the main factors controlling the emplacement of different lava flows and overflows during the monitored period. Despite the morphological continuity between the subaerial and submarine slope, textural variations in the SdF primarily depend on different processes and characteristics of the subaerial slope, the coastal area, the nearshore, and “deeper” marine areas.
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