Articles | Volume 24, issue 4
Hydrol. Earth Syst. Sci., 24, 2121–2139, 2020
https://doi.org/10.5194/hess-24-2121-2020
Hydrol. Earth Syst. Sci., 24, 2121–2139, 2020
https://doi.org/10.5194/hess-24-2121-2020
Research article
30 Apr 2020
Research article | 30 Apr 2020

Time-lapse cross-hole electrical resistivity tomography (CHERT) for monitoring seawater intrusion dynamics in a Mediterranean aquifer

Andrea Palacios et al.

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Cited articles

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Coastal areas are highly populated and seawater intrusion endangers the already scarce freshwater resources. We use, for the first time, a geophysical experiment called cross-hole electrical resistivity tomography to monitor seawater intrusion dynamics. The technique relies on readings of rock and water electrical conductivity to detect salt in the aquifer. Two years of experiment allowed us to reveal variations in aquifer salinity due to natural seasonality, heavy-rain events and droughts.