Articles | Volume 13, issue 2
https://doi.org/10.5194/esurf-13-295-2025
https://doi.org/10.5194/esurf-13-295-2025
Research article
 | 
03 Apr 2025
Research article |  | 03 Apr 2025

Decadal in situ hydrological observations and empirical modeling of pressure head in a high-alpine, fractured calcareous rock slope

Riccardo Scandroglio, Samuel Weber, Till Rehm, and Michael Krautblatter

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Cited articles

Arenson, L. U., Harrington, J. S., Koenig, C. E. M., and Wainstein, P. A.: Mountain Permafrost Hydrology – A Practical Review Following Studies from the Andes, Geosciences, 12, 48, https://doi.org/10.3390/geosciences12020048, 2022. a, b
Banks, E. W., Simmons, C. T., Love, A. J., Cranswick, R., Werner, A. D., Bestland, E. A., Wood, M., and Wilson, T.: Fractured bedrock and saprolite hydrogeologic controls on groundwater/surface-water interaction: A conceptual model (Australia), Hydrogeol. J., 17, 1969–1989, https://doi.org/10.1007/s10040-009-0490-7, 2009. a
Bast, A., Kenner, R., and Phillips, M.: Short-term cooling, drying, and deceleration of an ice-rich rock glacier, The Cryosphere, 18, 3141–3158, https://doi.org/10.5194/tc-18-3141-2024, 2024.​​​​​​​ a
Ben-Asher, M., Magnin, F., Westermann, S., Bock, J., Malet, E., Berthet, J., Ravanel, L., and Deline, P.: Estimating surface water availability in high mountain rock slopes using a numerical energy balance model, Earth Surf. Dynam., 11, 899–915, https://doi.org/10.5194/esurf-11-899-2023, 2023. a, b
Boussinesq, M. J.: Essai sur la theories des eaux courantes., Memoires presentes par divers savants a l'Academie des Sciences de l'Institut National de France, tome xxiii edn., Bibliothèque nationale de France, département Sciences et techniques, 4-V-277, http://catalogue.bnf.fr/ark:/12148/cb301489808 (last access: 17 March 2025), 1877. a
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Short summary
Despite the critical role of water in alpine regions, its presence in bedrock is frequently neglected. This research examines the dynamics of water in fractures using 1 decade of measurements from a tunnel 50 m underground. We provide new insights into alpine groundwater dynamics, revealing that up to 800 L d-1 can flow in one fracture during extreme events. These quantities can saturate the fractures, enhance hydraulic conductivity, and generate pressures that destabilize slopes.
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