Hazard potential of hydrothermal activity on groundwater: A case study from Azorean volcanoes

Julia Woitischek, Martin Dietzel, Virgilio Cruz, Salvatore Inguaggiato, Michael Böttcher, Albrecht Leis

Research output: Contribution to conferenceAbstractpeer-review


A survey of 28 springs at the Fogo and Furnas volcanoes highlights the potential of volcanic sources to contaminate water, there by posing a potential hazard to the quality of drinking water. The development of the first conceptual model for the hydrogeothermal system in São Miguel allows deciphering the geochemical and isotopic evolution of natural discharges. Meteoric water penetrated into the ground (δ18O H2O =-3 ± 1 ‰ V-SMOW; δD H2O =-13 ± 7 ‰ V-SMOW) and was chemical evolved by the uptake of volcanic gases (δ34S SO4 = 0 ± 1 ‰ V-CDT; δ13C GAS =-5 ± 2‰ V-PDB), heat and leaching of local rocks and its precipitates.
Original languageEnglish
Number of pages1
Publication statusPublished - 6 Jan 2016
EventVMSG 2016: Volcanic and Magmatic Studies Group - Dublin, Dublin, Ireland
Duration: 6 Jan 20168 Jan 2016


ConferenceVMSG 2016

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