Differentiated characterization of karst aquifers: some contributions

• Autores: Tobias Geyer, Steffen Birk, Thomas Reimann, Nathalie Dörfliger, Martin Sauter
• Localización: Carbonates and Evaporites, ISSN 0891-2556, Vol. 28, Nº. 1-2, 2013 (Ejemplar dedicado a: Integrating Science and Engineering to Solve Karst Problems, Part II), págs. 41-46
• Idioma: inglés
• Texto completo no disponible (Saber más ...)
• Resumen

  • Because of the small radius of investigation of hydrogeological standard testing methods, the characterization of karst aquifers is still a challenge. The development of a karst conduit system introduces an element of large contrast in hydraulic conductivity in the hydraulic parameter field of a karst aquifer. It leads to complex flow patterns and transport phenomena that differ significantly from those observed in porous and fissured media. While on a local, i.e., borehole scale, the fissured matrix of karst aquifers can be regarded as a continuum, on a regional, i.e., catchment scale, the drainage of the aquifer system is controlled by the conduit system, which may have a highly anisotropic geometry. Therefore, characterization of karst aquifers requires a differentiated approach by the combination of various hydrogeological field methods or the application of large-scale tests, which cover the scale of dominant aquifer heterogeneities. Existing numerical modeling approaches can be applied for integral data interpretation on catchment scale.