@article{fdi:010095089, title = {{M}ultidisciplinary approach to understand the salinization of fractured crystalline aquifers in semi-arid region}, author = {{K}reis, {M}.{B}. and {T}aupin, {J}ean-{D}enis and {P}atris, {N}icolas and {L}achassagne, {P}atrick and {V}ergnaud-{A}yraud, {V}. and {B}urte, {J}.{D}.{P}. and {L}educ, {C}hristian and {P}assos {R}odrigues {M}artins, {E}.}, editor = {}, language = {{ENG}}, abstract = {{I}n semi-arid areas, groundwater ({GW}) represents the most reliable resource for water supply. {I}n the semi-arid region of {C}earĂ¡ ({N}ortheastern {B}razil), {GW} of the crystalline fractured aquifers has a salinity higher than expected in this type of environment. {T}his study implemented a multidisciplinary approach based on hydrodynamic (piezometric) and hydrogeochemical (18{O}, 2{H}, 3{H}, 14{C}, {CFC}, {SF}6, {E}lectrical {C}onductivity, major ions) data to understand the salinization processes. {R}esults demonstrate that {GW} is generally recent and recharged by meteoric waters mainly through indirect infiltration from evaporated surface water. {T}he study suggests that {GW}, originally bicarbonated, becomes progressively enriched in chloride due to the dissolution and leaching of salts, during the wet season, which come from meteoric inputs and have precipitated in the unsaturated zone and pond sediments during dryer periods.}, keywords = {{BRESIL} ; {ZONE} {SEMIARIDE} ; {CEARA} {REGION}}, booktitle = {}, journal = {{P}roceedings of {IAHS}}, volume = {385}, numero = {}, pages = {393--398}, ISSN = {2199-899{X}}, year = {2024}, DOI = {10.5194/piahs-385-393-2024}, URL = {https://www.documentation.ird.fr/hor/fdi:010095089}, }