CO2 and heat fluxes in the Apennines
INGV, sezione di Bologna
Tectonically active regions are often characterized by a strong processes of carbon dioxide degassing and the estimation of the CO2 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 gives the average CO2 flux over large areas. Its application to peninsular Italy shows that the region is characterized by specific CO2 fluxes higher than the baseline for the geothermal regions of the world, and that the amount of endogenous CO2 discharged through diffuse regional degassing (~2.1×1011 mol yr-1) is the major component of the geological CO2 budget of Italy, definitely prevailing over the CO2 discharged by Italian active volcanoes and volcanoes in hydrothermal activity. Furthermore, the positive correlation between the geothermal heat and the deep CO2 dissolved in the groundwater of central Italy suggests that (i) the geothermal heat is transported into the aquifers by the same hot CO2 rich fluids causing the Italian CO2 anomaly and (ii) the advective heat flow is the dominant form of heat transfer of the region. Finally we show that the advective heat naturally released in the Apennine is very large and that locally implies geothermal heat fluxes as large as 200-300 mW m-2.
Born in Perugia on 30-01-1956
1979 degree in Earth Sciences
1980-1981 geoochemist c/o AQUATER (ENI)
1981-1985 geoochemist c/o Geotermica Italiana
1986-1997 graduated technician at the DST, University of Perugia
1994 ' Minguzzi' reward assigned from the SIMP as acknowledgement of the scientific production in geochemistry.
1997-2001 Associate Professor of Geochemistry, at the Osservatorio Vesuviano
2001-2018 Research director at INGV
2004-2011 Editor in chief of the scientific journal ìJournal of Volcanology an Geothermal Researchî (Elsevier)
2010-2017 Member of the board of the School of the Doctoral Programme in Science and Technologies for Physics and Geology of Perugia University
2011-2014 President of the IAVCEI Commission on Volcanic Gases (CCVG)
The activity of scientific research has been always dedicated to the geochemistry of fluids. From 1979 to 1988, the research has concerned theoretical and applied aspects of the geochemistry of geothermal systems. From 1988 to present, the activity has been focussed mainly on the geochemistry of volcanic fluids finalised to the surveillance and the estimation and on the interpretation of the CO2 earth degassing. Both the diffuse gas flux from the soil that affects volcanic and geothermal areas, and the flux of deeply derived CO2 that interests wide areas forming regional anomalies, have been investigated. He participated to the development of a methodology for quick measures of the CO2 flux generated by diffuse degassing of the soil (with realisation of automatic stations, for the measure of the CO2 flux, used in the volcanic surveillance). The regional anomalies have been studied through the mass budget of the stable isotopes of dissolved carbon in groundwaters. With this tool the map of CO2 fluxes interesting the whole appeninic area of central Italy was realised. This map constitutes the first example in the world of the measurement of 'earth degassing' from an area as large as tens of thousands of square kilometers.
author of about 140 papers
H-index 52 Google scholar
H-index 47 Scopus
H-index 45 WoS