Estudio de resistividad eléctrica para evaluar las zonas de infiltración de agua en el desecado Lago de Ándara (P. N. Picos de Europa, España)

  1. J. Olona 1
  2. J. Gallastegui 1
  3. P. Farias 1
  4. J.M. González-Cortina 1
  5. G. Fernández-Viejo 1
  6. C. López 1
  1. 1 Universidad de Oviedo
    info

    Universidad de Oviedo

    Oviedo, España

    ROR https://ror.org/006gksa02

Journal:
Geotemas (Madrid)

ISSN: 1576-5172

Year of publication: 2012

Issue Title: VIII Congreso Geológico de España, Oviedo, 17-19 de julio, 2012.

Issue: 13

Pages: 325-328

Type: Article

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Abstract

The Ándara Lake constituted the third mass of water by extension within the Picos de Europa Massif (NW Spain). Its sudden draining occurred in the second decade of the 20th century, during the development of underground Pb-Zn mining, between 1889 and 1929. The present study was requested by the Picos de Europa National Park (MAAM) with the purpose of: i) to localize the areas of water infiltration and ii) to establish the cause of the draining, specially its possible relation with the mining activity in the surroundings. With this aim a previous a geological study of the substrate of the lake was made, followed by a series of electrical resistivity profiles. The profiles were repeated at three different moments during the summer to evaluate the evolution of the infiltrations. The study located the main area of infiltration, which is associated with the intersection of two exploited seams. This corroborates the relationship between the water disappearance and the mining activities, which is an indispensable condition to consider taking any future actions aimed to a possible recovery of the original water mass.

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