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Title: Hydrogeophysical Assessment of the Critical Zone below a Golf Course Irrigated with Reclaimed Water Close to Volcanic Caldera
Author: Sendrós Brea-Iglesias, Alex
Himi, Mahjoub
Estévez, E.
Lovera Carrasco, Raúl
Palacios-Diaz, M. P.
Tapias Pantebre, Josefina Carlota
Cabrera, M. C.
Pérez-Torrado, Francisco José
Casas i Ponsatí, Albert
Keywords: Hidrologia d'aigües subterrànies
Circuits hidràulics
Groundwater hydrology
Hydraulic circuits
Issue Date: 31-Aug-2021
Publisher: MDPI
Abstract: The geometry and the hydraulic properties of the unsaturated zone is often difficult to evaluate from traditional soil sampling techniques. Soil samples typically provide only data of the upper layers and boreholes are expensive and only provide spotted information. Non-destructive geophysical methods and among them, electrical resistivity tomography can be applied in complex geological environments such as volcanic areas, where lavas and unconsolidated pyroclastic deposits dominate. They have a wide variability of hydraulic properties due to textural characteristics and modification processes suh as compaction, fracturation and weathering. To characterize the subsurface geology below the golf course of Bandama (Gran Canaria) a detailed electrical resistivity tomography survey has been conducted. This technique allowed us to define the geometry of the geological formations because of their high electrical resistivity contrasts. Subsequently, undisturbed soil and pyroclastic deposits samples were taken in representative outcrops for quantifying the hydraulic conductivity in the laboratory where the parametric electrical resistivity was measured in the field. A statistical correlation between the two variables has been obtained and a 3D model transit time of water infiltration through the vadose zone has been built to assess the vulnerability of the aquifers located below the golf course irrigated with reclaimed water.
Note: Reproducció del document publicat a:
It is part of: Water, 2021, vol. 13, num. 17, p. 2400;
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ISSN: 2073-4441
Appears in Collections:Articles publicats en revistes (Biologia, Sanitat i Medi Ambient)
Articles publicats en revistes (Mineralogia, Petrologia i Geologia Aplicada)

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