10.6084/m9.figshare.7105001.v1
Giovanni Chiodini
Giovanni
Chiodini
Francesco Frondini
Francesco
Frondini
Carlo Cardellini
Carlo
Cardellini
Stefano Caliro
Stefano
Caliro
Giulio Beddini
Giulio
Beddini
Angelo Rosiello
Angelo
Rosiello
Location, flow–rate, extension of the hydrogeological basin, chemical and isotopic analyses of the 160 springs considered in this study, along with the results of the carbon mass balance. <i>Measuring and interpreting CO<sub>2</sub> fluxes at regional scale: the case of Apennines, Italy</i>
Geological Society of London
2018
Italian CO 2 anomaly
carbon mass balance
CO 2 fluxes
CO 2
advective heat flow
CO 2 flux
CO 2 budget
carbon dioxide degassing
region
Geology
2018-09-19 07:50:42
Dataset
https://geolsoc.figshare.com/articles/dataset/Location_flow_rate_extension_of_the_hydrogeological_basin_chemical_and_isotopic_analyses_of_the_160_springs_considered_in_this_study_along_with_the_results_of_the_carbon_mass_balance_i_Measuring_and_interpreting_CO_sub_2_sub_fluxes_at_regional_scale_the_c/7105001
Tectonically active regions are often characterized by a large amounts of carbon dioxide degassing, and estimation of the total CO<sub>2</sub> discharged to the atmosphere from tectonic structures, hydrothermal systems and inactive volcanic areas is crucial for the definition of present-day global Earth degassing. The carbon balance of regional aquifers is a powerful tool to quantify the diffuse degassing of deep inorganic carbon sources because the method integrates the CO<sub>2</sub> flux over large areas. Its application to peninsular Italy shows that the region is characterized by specific CO<sub>2</sub> fluxes higher than the baseline determined for the geothermal regions of the world, and that the amount of endogenous CO<sub>2</sub> discharged through diffuse regional degassing (~2.1×1011 mol yr<sup>-1</sup>) is the major component of the geological CO<sub>2</sub> budget of Italy, definitely prevailing over the CO<sub>2</sub> discharged by Italian active volcanoes and volcanoes in hydrothermal activity. Furthermore, the positive correlation between geothermal heat and deep CO<sub>2</sub> dissolved in the groundwater of central Italy suggests that (i) the geothermal heat is transported into the aquifers by the same hot CO<sub>2</sub> rich fluids causing the Italian CO<sub>2</sub> anomaly and (ii) the advective heat flow is the dominant form of heat transfer of the region.