Sondeos surgentes en la zona de descarga de acuíferos costeros libresefectos sobre la interfase agua dulce-agua salada

  1. J.P. Sánchez Úbeda 1
  2. M.L. Calvache Quesada 1
  3. C. Duque Calvache 1
  4. J.M. Gómez Fontalva 1
  5. M. López Chicano 1
  1. 1 Universidad de Granada
    info

    Universidad de Granada

    Granada, España

    ROR https://ror.org/04njjy449

Journal:
Geogaceta

ISSN: 0213-683X

Year of publication: 2015

Issue Title: Comunicaciones presentadas en la LVII Sesión Científica / Madrid, 27-28 de Noviembre de 2014

Issue: 57

Pages: 139-142

Type: Article

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Abstract

The presence of vertical flow in the discharge zones of coastal aquifers is regarding to specific configuration and quiet common of the flow patterns in these areas. In Motril-Salobreña coastal aquifer it has been verified through the drilling of an artesian well near the shoreline. There have been several 3D mathematical flow models with variable density by SEAWAT to reproduce the effects of the opening of the artesian well on the flow configuration and salinity distribution around the saltwater-freshwater interface. Results show a better fit with observed values (in the artesian well and other nearby points) when the artesian well is modelled as a drain with respect to a pumping well.The main detected affection is determinant in the salinity distribution, causing further expansion of the mixing zone into the aquifer and intrusion of brackish water into the well. The distribution of the slotted intervals and the piezometric head in the drain well determine the depths of greatest contribution of the upwelling water, together with the defined anisotropy and heterogeneity in the model.

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