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Hydrogeological insights at Stromboli volcano (Italy) from geoelectrical, temperature, and CO2 soil degassing investigations

Finding the geometry of aquifers in an active volcano is important for evaluating the hazards associated with phreato‐magmatic phenomena and incidentally to address the problem of water supply. A combination of electrical resistivity tomography (ERT), self‐potential, CO2, and temperature measurement...

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Published in:Geophysical research letters 2006-09, Vol.33 (17), p.L17304-n/a
Main Authors: Finizola, A., Revil, A., Rizzo, E., Piscitelli, S., Ricci, T., Morin, J., Angeletti, B., Mocochain, L., Sortino, F.
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container_issue 17
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container_title Geophysical research letters
container_volume 33
creator Finizola, A.
Revil, A.
Rizzo, E.
Piscitelli, S.
Ricci, T.
Morin, J.
Angeletti, B.
Mocochain, L.
Sortino, F.
description Finding the geometry of aquifers in an active volcano is important for evaluating the hazards associated with phreato‐magmatic phenomena and incidentally to address the problem of water supply. A combination of electrical resistivity tomography (ERT), self‐potential, CO2, and temperature measurements provides insights about the location and pattern of ground water flow at Stromboli volcano. The measurements were conducted along a NE‐SW profile across the island from Scari to Ginostra, crossing the summit (Pizzo) area. ERT data (electrode spacing 20 m, depth of penetration of ∼200 m) shows the shallow architecture through the distribution of the resistivities. The hydrothermal system is characterized by low values of the resistivity (2000 Ω m) except on the North‐East flank of the volcano where a cold aquifer is detected at a depth of ∼80 m (resistivity in the range 70–300 Ω m). CO2 and temperature measurements corroborate the delineation of the hydrothermal body in the summit part of the volcano while a negative self‐potential anomaly underlines the position of the cold aquifer.
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source Wiley; Wiley-Blackwell AGU Digital Archive
subjects Earth Sciences
Earth, ocean, space
Exact sciences and technology
Exploration Geophysics
Field relationships
Geophysics
Groundwater transport
Hydrology
Hydrothermal systems
Magnetic and electrical methods
Magnetic and electrical properties
Physical Properties of Rocks
Sciences of the Universe
Volcanology
title Hydrogeological insights at Stromboli volcano (Italy) from geoelectrical, temperature, and CO2 soil degassing investigations
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