GNGTS 2024 - Atti del 42° Convegno Nazionale

Session 1.2 GNGTS 2024 Overview of the methods Results Figure 2 shows the main results obtained for the Etna case study. Displacement maps before the 24 December 2018 erupton (T1 period: January 2016 - December 2018) show general infaton reaching 7 cm/yr at summit areas. Eastward and westward movements are recorded along the eastern and western fanks, respectvely. Instead, afer the December event (T2 period: January 2019 - July 2021) we observe that the summit infaton decreases the spatal extent and localized patches of subsidence occur inside the Valle del Bove depression. Also, we note a seaward S a t e l l i t e Mission Case Study Methods Time Interval Products Aim Sentnel-1 Etna volcano S m a l l B a s e l i n e Subset InSAR approach Before [Jan 2016 – Dec 2018] and afer [Jan 2019 – J u l 2 0 2 1 ] t h e 2018 erupton G r o u n d displacement m a p s & displacement tme series Displacements assessment on t h e e n t r e v o l c a n o & displacements e v o l u t o n study at the lava fows area S a n g a y volcano Jun 2021 – Aug 2023 Polarimetric c h a n g e d e t e c t o n approach Before [Nov 2021] and afer [Dec 2 0 2 1 ] t h e erupton C h a n g e d e t e c t o n map Detecton of lava fow and p y r o c l a s t c c u r r e n t phenomena C o s m o - SkyMed Etna volcano S t e r e o radargramme try technique Before [Jun 2016] a nd afe r [ J u l 2019] the 2018 erupton D i g i t a l E l e v a t o n M o d e l s (DEM) D E M d i f e r e n c e ana l ys i s for estmatng the t opog raph i c c h a n g e s caused by the l a v a emplacement Sentnel-2 Etna volcano V i s u a l inspecton & r e f e c t a n c e analysis December 2018 & May 2019 L a v a f o w bounda r i e s vector fles E x t e n s i o n retrieval of the l a v a f o w s felds