Image Processing Techniques to Estimate the Propagation of Ground Deformation at Mt. Etna (Italy) from ALOS PALSAR InSAR Data

Wednesday, 17 December 2014
Danila Scandura1, Sebastiano Battiato2, Valentina Bruno1, Flavio Cannavo1, Giovanni Maria Farinella2, Antonino Furnari2, Mario Mattia3, Giovanna Pappalardo2, Giovanni Puglisi2 and Urs Weigmuller4, (1)National Institute of Geophysics and Volcanology, Rome, Italy, (2)University of Catania, Dipartimento di Matematica ed Informatica, Catania, Italy, (3)INGV National Institute of Geophysics and Volcanology, Rome, Italy, (4)GAMMA Remote Sensing AG, Gümligen, Switzerland
InSAR data carry much information of crustal dynamics. One of the most challenging open problems in geodesy is to identify and distinguish different patterns of deformation and to define the interactions between contiguous areas and the known main fault systems. In this work we use the ALOS PALSAR images in the period 2007 – 2010 to analyze the time-space propagation of the ground deformation at the Eastern Flank of Mt. Etna. In particular we adopt techniques of image processing, based on neighborhood distances, to trace the movement of the displacements on the sequence of the InSAR images. We tested the robustness of the adopted techniques to evaluate the reliability of the results. Results suggest that the ground deformation propagation on Mt. Etna Eastern flank is strongly controlled by the main tectonic features acting as real barriers to the propagation of the deformation.