Publication Date:
2023-08-29
Description:
Injecting volcanic gas into the air leads to an increase in carbon dioxide (CO2) levels compared with background concentrations and may establish gas hazard conditions. This study reports the results of five stable isotope (i.e., δ13C-CO2 and δ18O-CO2) surveys of airborne CO2 on Vulcano from August 2020 to November 2021. To measure CO2 in the air, a mobile laboratory was equipped with a laser-based spectrophotometer that can selectively detect different CO2 isotopologues. Volcanic CO2 has a different isotopic signature than atmospheric CO2 and both δ13C-CO2 and δ18O-CO2 can help trace the injections of volcanic gases into the air. An isotopic mass balance model was developed for partitions CO2 between atmospheric background and volcanic CO2. The results of these studies show that volcanic CO2 emissions and atmospheric circulation deeply affected the concentration of CO2 in the air at Vulcano Porto. Studies of δ13C-CO2 and δ18O-CO2 provide an estimate of volcanic CO2 in the air. These results help identify spatially some points of interest for mitigating volcanic gas emission-related hazards on Vulcano.
Description:
Istituto Nazionale di Geofisica e Vulcanologia
Description:
Published
Description:
e2022JD037706
Description:
6A. Geochimica per l'ambiente e geologia medica
Description:
JCR Journal
Keywords:
stable isotopes
;
atmospheric carbon dioxide
;
gas hazard
;
geochemical modeling
;
volcanic degassing
;
volcanic crisis
;
Vulcano, isole Eolie
;
carbon dioxide
;
volcanic gas emissions
;
oxygen isotopes
;
carbon isotopes
;
CO2
;
air CO2
;
Spatial isotope monitoring enables the identification of the origin of CO2 in the air
;
Calculating the stable isotope balances enables quantify the volcanic CO2 in the total CO2 in the air
;
Significant changes in volcanic degassing increased air CO2 concentration and gas hazard on Vulcano – Italy – in 2021
;
01.01. Atmosphere
;
04.08. Volcanology
;
03.04. Chemical and biological
;
05.03. Educational, History of Science, Public Issues
;
05.02. Data dissemination
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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