0000000000431145

AUTHOR

W. De Cesare

showing 2 related works from this author

Hydrothermal pressure-temperature control on CO2 emissions and seismicity at Campi Flegrei (Italy)

2021

Fluids supplied by stored magma at depth are causal factors of volcanic unrest, as they can cause pressurization/heating of hydrothermal systems. However, evidence for links between hydrothermal pressurization, CO2 emission and volcano seismicity have remained elusive. Here, we use recent (2010−2020) observations at Campi Flegrei caldera (CFc) to show hydrothermal pressure, gas emission and seismicity at CFc share common source areas and well-matching temporal evolutions. We interpret the recent escalation in seismicity and surface gas emissions as caused by pressure-temperature increase at the top of a vertically elongated (0.3–2 km deep) gas front. Using mass (steam) balance consideration…

010504 meteorology & atmospheric sciencesCampi Flegrei mantle geochemistry CO2 emission Fumarole compositions Hydrothermal systems Volcanic unrest Volcano seismicityInduced seismicity010502 geochemistry & geophysics01 natural sciencesHydrothermal circulationHydrothermal systemsCabin pressurizationGeochemistry and PetrologyCalderaPetrologyFumarole compositions0105 earth and related environmental sciencesgeographygeography.geographical_feature_categoryVolcanic unrest; Hydrothermal systems; Campi Flegrei; Fumarole compositions; CO2 emission; Volcano seismicityFront (oceanography)Volcano seismicityGeophysicsVolcanoVolume (thermodynamics)Volcanic unrestCO2 emissionMagmaCampi FlegreiGeology
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Fumarolic tremor and geochemical signals during a volcanic unrest

2017

Fumaroles are known to generate seismic and infrasonic tremor, but this fumarolic tremor has so far received little attention. Seismic records taken near the Pisciarelli fumarole, a vigorously degassing vent of the restless Campi Flegrei volcano in Italy, reveal a fumarolesourced tremor whose amplitude has recently intensified. We use independent geochemical evidence to interpret this fumarolic tremor for the first time quantitatively. We find that the temporal increase in fumarolic tremor RSAM (real-time seismic-amplitude measurement) quantitatively correlates with increases in independent proxies of fumarole activity, including the CO2concentrations in the fumarole's atmospheric plume, th…

010504 meteorology & atmospheric sciencesGeochemistryGeology010502 geochemistry & geophysics01 natural sciencesVolcanic unrestGeology0105 earth and related environmental sciences
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