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Medidas de δ18O e hidroquímica de águas superficiais e subterrâneas no estudo d...

For an investigation in losses of river flow of Jaguaribe river, in the region of Limoeiro do Norte, surface and groundwater samples were taken, in dry and rainy seasons, during a period of 2 years. Oxygen-18 and hydrochemical analyses were performed to avaluate the origin of aquifer recharge and river/aquifer interaction. Results show pronounced differences in δ18O between Jaguaribe river (mean: +1.6) and the ...