Aquifer-river interaction in the Río Velez aquifer (Málaga, Spain) based on hydrochemical (SO42-, NO3-) and stable isotope (d2H, d18O) data

  1. Iñaki Vadillo Pérez 1
  2. José Benavente Herrera 2
  3. Begoña Urresti Estala 1
  4. Pablo Jiménez Gavilán 1
  5. Carmen Almécija Ruiz 2
  1. 1 Universidad de Málaga, España
  2. 2 Universidad de Granada, España
Zeitschrift:
Geogaceta

ISSN: 0213-683X

Datum der Publikation: 2017

Titel der Ausgabe: Comunicaciones presentadas en la LXII Sesión Científica / Guadalupe, 25 de Mayo de 2017

Nummer: 62

Seiten: 95-98

Art: Artikel

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Andere Publikationen in: Geogaceta

Zusammenfassung

The Velez River alluvial aquifer is a suitable example for characterizing the interaction between stream water (SW) and groundwater (GW), based on the spatial and temporal variation of solutes derived from agricultural inputs (SO42- and NO3-) and stable isotope (δ2H and δ18O) data. Particularly, we provide in this study a significant amount of new isotope data, both in GW and especially in SW, from water samples taken in wet and dry periods along the river and its banks. The results allow us to identify a reach of the river that shows more clearly the interaction between the two types of water. The effects of other hydrological processes, such as recycling of pumped water for irrigation, the relative concentration of GW in dry periods, as well as the local influence in the aquifer of water coming from a nearby reservoir, can also be suggested from our samplings.

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Informationen zur Finanzierung

The present study has been carried out in the framework of (a) the Coordinated Research Project F33020 “Environmental isotope methods to assess water quality issues in rivers impacted by groundwater discharge” promoted by the International Atomic Energy Agency (IAEA), and (b) the Research Groups RNM-126 and RNM-308 of the Andalusia Government. We thank Prof. M.C. Hidalgo Estévez (University of Jaén) and other anonymous reviewer for their valuable comments of the manuscript.

Geldgeber

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