CO2 emissions during the 2023 Litli Hrútur eruption in Reykjanes, Iceland: ẟ13C tracks magma degassing

We report CO2 emission rates and plume δ13C during the July 2023 eruption at Litli Hrútur in the Fagradalsfjall region of the Reykjanes Peninsula. The CO2 emission rates were measured by UAV utilizing a new method of data extrapolation that enables obtaining rapid flux results of dynamic eruption p...

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Bibliographic Details
Published in:Bulletin of Volcanology
Main Authors: Fischer T. P., Mandon C. L., Nowicki S., Ericksen J., Vilches F. R., Pfeffer M. A., Aiuppa A., Bitetto M., Vitale A., Fricke G. M., Moses M. E., Stefansson A.
Other Authors: Fischer T.P., Mandon C.L., Vilches F.R., Pfeffer M.A., Fricke G.M., Moses M.E.
Format: Article in Journal/Newspaper
Language:English
Published: Springer Science and Business Media Deutschland GmbH 2024
Subjects:
Carbon isotopes
CO2
emissions
Magma degassing
Reykjanes eruptions
UAV (uncrewed aerial vehicle)
Iceland
Online Access:https://hdl.handle.net/10447/641540
https://doi.org/10.1007/s00445-024-01751-7
Description
Summary:We report CO2 emission rates and plume δ13C during the July 2023 eruption at Litli Hrútur in the Fagradalsfjall region of the Reykjanes Peninsula. The CO2 emission rates were measured by UAV utilizing a new method of data extrapolation that enables obtaining rapid flux results of dynamic eruption plumes. The δ13C values are consistent with degassing-induced isotopic fractionation of the magma during and after the eruption. Our results show that rapid, real-time CO2 flux measurements coupled with isotopic values of samples collected at the same time provide key insights into the dynamics of volcanic eruptions and have the potential of forecasting the termination of activity.

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