Hydrology and Earth System Sciences
Hydrology and Earth System Sciences
HESS
Articles | Volume 30, issue 6
Articles | Volume 30, issue 6
https://doi.org/10.5194/hess-30-1735-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/hess-30-1735-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 30, issue 6
Research article
 | 
31 Mar 2026
Research article |  | 31 Mar 2026

Water flow timing, quantity, and sources in a fractured high mountain permafrost rock wall

Matan Ben-Asher, Antoine Chabas, Jean-Yves Josnin, Josué Bock, Emmanuel Malet, Amaël Poulain, Yves Perrette, and Florence Magnin

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Short summary
We studied how water moves through fractured rock walls in a high mountain area in the Alps. Using sensors and tracers over two years, in a high-altitude site, we tracked where the water came from and when it flowed. Most of it came from melting snow, but some came from rain and older ice. The results show that heat and water flow can speed up the melting of frozen ground, which may affect mountain stability. This helps us understand how climate change influences these fragile environments.
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