GNGTS 2024 - Atti del 42° Convegno Nazionale

Session 1.2 GNGTS 2024 Fig. 2 – a) Google Image of summit area of la Fossa cone showing the temperature network for thermal monitoring of the actve cone. The red line traces the profle reported in b. - b) E-W topographic profle of the summit area. As an example of the informaton obtained by monitoring the temperature gradient in the difuse degassing zone we show in Figure 3 the updated tme series of heat fux, as it was registered at the VSCS staton. The elaboraton of the data set of temperatures revealed an increase of the thermal anomaly during the summer 2021, reaching the maximum intensity in September 2021 (Inguaggiato et al., 2022) due to the raising upward of a massive convectve front below the VSCS staton. The ground temperatures at VSCS staton showed the highest peak with the maximum increasing rate registered from 17 September to October. To date even if the difuse heat fux values from VSCS staton, along with the other geochemical parameters are lowered from 2022, they have not yet returned to background values before the unrest of 2021. All the data recorded from the temperature monitoring network on La Fossa cone have been considered as ground control references for local applicaton of thermal remote sensing (see for example Pailot et al., 2023; Silvestri et al. 2019). The updated tme series are included in the periodical reports to the Italian Department of Civil Protecton for volcanic surveillance.