Articles | Volume 14, issue 1
https://doi.org/10.5194/esurf-14-33-2026
https://doi.org/10.5194/esurf-14-33-2026
Research article
 | 
13 Jan 2026
Research article |  | 13 Jan 2026

Quantifying erosion in a pre-Alpine catchment at high resolution with concentrations of cosmogenic 10Be, 26Al, and 14C

Chantal Schmidt, David Mair, Naki Akçar, Marcus Christl, Negar Haghipour, Christof Vockenhuber, Philip Gautschi, Brian McArdell, and Fritz Schlunegger

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Cited articles

Abbühl, L. M., Norton, K. P., Jansen, J. D., Schlunegger, F., Aldahan, A., and Possnert, G.: Erosion rates and mechanisms of knickzone retreat inferred from 10 Be measured across strong climate gradients on the northern and central Andes Western Escarpment, Earth Surf. Process. Landforms, 36, 1464–1473, https://doi.org/10.1002/esp.2164, 2011. 
Akçar, N., Ivy-Ochs, S., Alfimov, V., Schlunegger, F., Claude, A., Reber, R., Christl, M., Vockenhuber, C., Dehnert, A., Rahn, M., and Schlüchter, C.: Isochron-burial dating of glaciofluvial deposits: First results from the Swiss Alps, Earth Surf. Process. Landforms, 42, 2414–2425, https://doi.org/10.1002/esp.4201, 2017. 
Amt für Wald und Naturgefahren des Kantons Bern: Naturgefahrenkataster (NGKAT), https://www.agi.dij.be.ch/de/start/geoportal/geodaten/detail.html?type=geoproduct&code=NGKAT (last access: 26 May 2025), 2024. 
Balco, G., Stone, J. O., Lifton, N. A., and Dunai, T. J.: A complete and easily accessible means of calculating surface exposure ages or erosion rates from 10Be and 26Al measurements, Quaternary Geochronology, 3, 174–195, https://doi.org/10.1016/j.quageo.2007.12.001, 2008. 
Battista, G., Schlunegger, F., Burlando, P., and Molnar, P.: Modelling localized sources of sediment in mountain catchments for provenance studies, Earth Surf. Process. Landforms, 45, 3475–3487, https://doi.org/10.1002/esp.4979, 2020. 
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Short summary
Our study examines erosion in a small, pre-Alpine basin by using cosmogenic nuclides in river sediments. Based on a dense measuring network we were able to distinguish two main zones: an upper zone with slow erosion of surface material, and a steeper, lower zone where faster erosion is driven by landslides. The data suggests that sediment has been constantly produced over thousands of years, indicating a stable, long-term balance between contrasting erosion processes.
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