Characterization of a Shallow Coastal Aquifer in the Framework of a Subsurface Storage and Soil Aquifer Treatment Project Using Electrical Resistivity Tomography (Port de la Selva, Spain)

Applied Sciences

Alex Sendrós¹  Albert Casas¹  Mahjoub Himi¹  Aritz Urruela¹  Raúl Lovera¹  Luis Rivero¹  Carlos Alonso²  JosefinaC. Tapias³  Ruben Garcia-Artigas³ 

[1] Mineralogy, Petrology and Applied Geology, Universitat de Barcelona, 08028 Barcelona, Spain;Seequent, Marlow SL7 1DB, UK;Water Research Institute, Universitat de Barcelona, 08001 Barcelona, Spain;

关键词: aquifer geometry;    electrical resistivity tomography;    managed aquifer recharge;    saltwater intrusion;    soil aquifer treatment;    sustainable development goal 6;   

DOI  :  10.3390/app11062448

来源: DOAJ

【 摘 要 】

Water percolation through infiltration ponds is creating significant synergies for the broad adoption of water reuse as an additional non-conventional water supply. Despite the apparent simplicity of the soil aquifer treatment (SAT) approaches, the complexity of site-specific hydrogeological conditions and the processes occurring at various scales require an exhaustive understanding of the system’s response. The non-saturated zone and underlying aquifers cannot be considered as a black box, nor accept its characterization from few boreholes not well distributed over the area to be investigated. Electrical resistivity tomography (ERT) is a non-invasive technology, highly responsive to geological heterogeneities that has demonstrated useful to provide the detailed subsurface information required for groundwater modeling. The relationships between the electrical resistivity of the alluvial sediments and the bedrock and the difference in salinity of groundwater highlight the potential of geophysical methods over other more costly subsurface exploration techniques. The results of our research show that ERT coupled with implicit modeling tools provides information that can significantly help to identify aquifer geometry and characterize the saltwater intrusion of shallow alluvial aquifers. The proposed approaches could improve the reliability of groundwater models and the commitment of stakeholders to the benefits of SAT procedures.

【 授权许可】

Unknown