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Photogrammetric and LIDAR surveys on the Sciara del Fuoco to monitor the 2007
Stromboli eruptionBernardo E.1, Coltelli M.2, Marsella M.1, Proietti C.2,
Sonnessa A.1
1 Sapienza Università Roma2 Istituto Nazionale Geofisica e Vulcanologia,
Sezione di Catania
Aerial surveys carried out between 2001 and 2007: high resolution Digital Elevation Model (horiz./vert. resolutions 15-20 cm/20-50 cm)
Photogrammetric and LIDAR surveys made available pre, post and syn-
eruption DEMs for monitoring both the 2002-03 and 2007 eruptions
funded by the Italian Civil Protection: GNV and INGV-DPC research programs
Photogrammetric and LIDAR surveys of the 2007 eruption
2006:Pre-eruptionLIDAR
4 March 2007:syn-eruptionphotogrammetric
15-16 March 2007: syn-eruptionphotogrammetric
12 April 2007: Eruption endphotogrammetric
22 May 2007Post-eruptionLIDAR
The available DEMs, as well as the corresponding orthophotos allowed to:
reconstruct and model slope deformations and the main
morphological features connected to volcanic activity
during the last two effusive eruptions (2002-03 and
2007)
evaluate the temporal evolution of the lava flow field
2001 aerial phothogrammetry
2: slope deformations, connected to volcanic 2: slope deformations, connected to volcanic activity activity – building of the lava terrace (2002-– building of the lava terrace (2002-2003) and its vertical displacement (2007)2003) and its vertical displacement (2007)
Aerial photogrammetry post 2007
2007 residual
2: slope deformations, connected to 2002-2003 2: slope deformations, connected to 2002-2003 volcanic activityvolcanic activity
– – landslide and building of the lava terracelandslide and building of the lava terrace
Aerial photogrammetry post 2002-2003
Aerial photogrammetry post 2007
2: slope deformations, connected to 20072: slope deformations, connected to 2007volcanic activityvolcanic activity
– – vertical displacement of the lava terrace and slope vertical displacement of the lava terrace and slope bulgingbulging
2: slope deformations, connected to volcanic activity 2: slope deformations, connected to volcanic activity
3: Example of the reconstruction of the 2002-3: Example of the reconstruction of the 2002-2003 lava flow fields (27/01/2003)2003 lava flow fields (27/01/2003)
3: Reconstruction of the 2007 lava flow fields
Orthorectificaton of helicopter photos to
integrate aerial surveys, by the
scientific software, OrthoView - DITS,
Università La Sapienza)
F1, F1a, F1b: active on 27 February onlyF2 active 27 February – 02 AprilF3 active 09-10 March
Lava flow limits defined by the
analysis of aerial orthophotos
flow volumes and daily effusion rate evaluated from the comparisons among syn, post and pre-eruption DEMs from photogrammetric and LIDAR surveys for the last two effusive eruptions of Stromboli
comparison between effusion rates from aerial and satellite data
Aerial surveys, even if less frequent than satellite observations, are very useful for constraining effusion rate trends because they can be adopted for lava volume estimating from the quantitative comparison of multi-temporal DEMs
Quantitative data contributed to improve the knowledge of volcanic processes, in particular to evaluate the connection between lava effusion and slope instabilities at Stromboli volcano
ConclusionsConclusions
Thank you for your
attention!!!