Incremento de CO2 en cuevas profundas asociado a sismicidad cercana

  1. R. Pérez-López 1
  2. M. Patyniak 2
  3. S. Sánchez-Moral 3
  4. E. Bañón 4
  5. J.J. Martínez-Díaz 5
  6. S. Cuezva 3
  7. Javier Lario 6
  8. Silvia Martín-Velázquez 7
  9. P.G. Silva 8
  10. Jorge L. Giner-Robles 9
  11. M.A. Rodríguez-Pascua 1
  1. 1 Instituto Geológico y Minero de España
    info

    Instituto Geológico y Minero de España

    Madrid, España

    ROR https://ror.org/04cadha73

  2. 2 Institute of Earth and Environmental Science. University of Potsdam
  3. 3 Museo Nacional de Ciencias Naturales, CSIC
  4. 4 Espeleoclub RESALTES Murcia
  5. 5 UCM
  6. 6 Universidad Nacional de Educación a Distancia
    info

    Universidad Nacional de Educación a Distancia

    Madrid, España

    ROR https://ror.org/02msb5n36

  7. 7 Universidad Rey Juan Carlos
    info

    Universidad Rey Juan Carlos

    Madrid, España

    ROR https://ror.org/01v5cv687

  8. 8 Universidad de Salamanca
    info

    Universidad de Salamanca

    Salamanca, España

    ROR https://ror.org/02f40zc51

  9. 9 Universidad Autónoma de Madrid
    info

    Universidad Autónoma de Madrid

    Madrid, España

    ROR https://ror.org/01cby8j38

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Revista:
Geotemas (Madrid)

ISSN: 1576-5172

Año de publicación: 2016

Título del ejemplar: IX CONGRESO GEOLÓGICO DE ESPAÑA

Número: 16

Páginas: 621-624

Tipo: Artículo

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Otras publicaciones en: Geotemas (Madrid)

Resumen

The Benis Cave is the deepest explored cave (-320m) affecting the Prebetic units of the Betic Cordillera, and it was related to an active fault. Evidence of Upper Pleistocene paleoseismic activity and the peculiar topography of the cave, hypogenic and fault-related halls, encouraged us to monitor the daily CO2 content in the air composition at depth (280m), and for a time period of six months during the early 2015. Our results show a preliminary positive correlation between micro-seismic activity in the surroundings (up to 60 km away), and the CO2 concentration (daily increasing till 300ppm for the closest microearthquakes). The maximum value of carbon dioxide recorded inside the cave was c.a. 2000 ppm, and the origin was established as pedogenic from the 13CO2 analysis. Therefore, we propose an increase in the CO2 concentration into the air karst related to the micro-seismic activity. Despite this preliminary worthy results, more data are needed to establish an accurate model for earthquake forecasting.

Fuente de los datos: Dialnet