Diffusive non-volcanic soil CO2 and CH4 degassing at Sava intramountain plain (Southern Italian Apennine)

Research in Earth Science primarily concentrates on comprehending Earth’s degassing mechanism by examining (i) gas origins, (ii) interactions between gas-water-rocks and (iii) the correlation between deep degassing, thermal energy release, and seismic activity. Fluid recycling of various origins is closely tied to Earth’s geodynamics. Throughout the tectonic cycle, fluids trapped in the lithosphere can be liberated, leading to diverse outcomes such as the begining of volcanic activity, seismic events, and long term influeces on the Earth’s global climate. The Italian Apennines are the perfect open-air laboratory and offers many location to study and understand the uplift fluid dynamics and water-gas-rock interaction process. The process of Apennines orogenesis related to crustal subduction represents the most efficient hypothesis to explain these large amounts of gas with deep origin. This gas accumulates and may dissolve in groundwater as well can be found in geologic traps, causing high surface emissions. In this specific work the accumulation chamber methoid was used, allowing to get qualitive and quantitive information about the diffusive degassing in the region. This study underline the importance of estimating and quantifying the deep CO2 and CH4 fluxes. This is an example of surveillance that is essential for advancing our understanding of Earth's geology, carbon cycle and eviromental dynamics. It enables scientists to better predict and mitigate gas hazard, assess climate change impacts and safeguard the health and resilience of ecosystems and communities.