Articles | Volume 13, issue 6
https://doi.org/10.5194/esurf-13-1205-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/esurf-13-1205-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
17 Nov 2025
Research article |
| 17 Nov 2025
| 17 Nov 2025
Spatial assessment of sediment production in a badland catchment using repeat LiDAR surveys, Draix, Alpes de Haute-Provence, France
Institut de physique du globe de Paris, Université Paris Cité, CNRS, 75005 Paris, France
Institut de physique du globe de Paris, Université Paris Cité, CNRS, 75005 Paris, France
Caroline Le Bouteiller
Univ. Grenoble Alpes, INRAE, CNRS, IRD, Grenoble INP, IGE, 38000 Grenoble, France
Sébastien Klotz
Univ. Grenoble Alpes, INRAE, CNRS, IRD, Grenoble INP, IGE, 38000 Grenoble, France
Gabrielle Chabaud
Institut de physique du globe de Paris, Université Paris Cité, CNRS, 75005 Paris, France
Stéphane Jacquemoud
Institut de physique du globe de Paris, Université Paris Cité, CNRS, 75005 Paris, France
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EGUsphere, https://doi.org/10.5194/egusphere-2026-834, https://doi.org/10.5194/egusphere-2026-834, 2026
This preprint is open for discussion and under review for Earth Surface Dynamics (ESurf).
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Badlands are heavily eroded landscapes where plants play a major role in controlling erosion. Using 40 years of aerial and satellite images of a badland site in the French Alps, we found that vegetation increased from 39 %–46 %, mainly due to young pines spreading onto bare ground. Vegetation colonization and retreat are linked to erosion and slope stability, seed dispersal, and climate. Understanding these relationships is needed to better predict how these landscapes may change in the future.
Clarissa Baldo, Servanne Chevaillier, Sophie Nowak, Gael Noyalet, Sandra Lafon, Claudia Di Biagio, Amelie Chaput, James King, Mathieu Cazaunau, Edouard Pangui, Jean-Francois Doussin, Remi Stanus, Nadine Mattielli, Heleen C. Vos, Gregory S. Okin, Brigitte Language, Stuart Piketh, Karine Desboeufs, Akinori Ito, Silvia Becagli, Laurie Barrier, Stephane Jacquemound, and Paola Formenti
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This preprint is open for discussion and under review for Atmospheric Chemistry and Physics (ACP).
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Our results show that crustal element ratios and clay contents distinguish dust aerosols from arid western coastal areas and humid eastern inland regions in Southern Africa. This dust contains key micronutrients that can become bioaccessible during atmospheric transport to nearby and remote marine ecosystems. It is also enriched in carbonates and K-feldspar, serving as a source of cloud condensation and ice nuclei, with potential implications ranging from regional to sub-hemispheric scales.
Cléa Lumina Denamiel, Alexis Marboeuf, Anne Mangeney, Anne Le Friant, Marc Peruzzetto, Antoine Lucas, Manuel J. Castro Díaz, and Enrique Fernández-Nieto
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Landslide-Tsurrogate v1.0 is an open-source Python/MATLAB tool that rapidly estimates tsunami hazards from submarine landslides using surrogate models instead of costly numerical simulations. Based on polynomial chaos expansions, it enables sensitivity analyses, fast probabilistic results, and user-friendly visualization. Tested in Mayotte, it runs in seconds and can be applied to any coastal region.
Tobias Roylands, Robert G. Hilton, Erin L. McClymont, Mark H. Garnett, Guillaume Soulet, Sébastien Klotz, Mathis Degler, Felipe Napoleoni, and Caroline Le Bouteiller
Earth Surf. Dynam., 12, 271–299, https://doi.org/10.5194/esurf-12-271-2024, https://doi.org/10.5194/esurf-12-271-2024, 2024
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Chemical weathering of sedimentary rocks can release carbon dioxide and consume oxygen. We present a new field-based method to measure the exchange of these gases in real time, which allows us to directly compare the amount of reactants and products. By studying two sites with different rock types, we show that the chemical composition is an important factor in driving the weathering reactions. Locally, the carbon dioxide release changes alongside temperature and precipitation.
Sebastien Klotz, Caroline Le Bouteiller, Nicolle Mathys, Firmin Fontaine, Xavier Ravanat, Jean-Emmanuel Olivier, Frédéric Liébault, Hugo Jantzi, Patrick Coulmeau, Didier Richard, Jean-Pierre Cambon, and Maurice Meunier
Earth Syst. Sci. Data, 15, 4371–4388, https://doi.org/10.5194/essd-15-4371-2023, https://doi.org/10.5194/essd-15-4371-2023, 2023
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Mountain badlands are places of intense erosion. They deliver large amounts of sediment to river systems, with consequences for hydropower sustainability, habitat quality and biodiversity, and flood hazard and river management. Draix-Bleone Observatory was created in 1983 to understand and quantify sediment delivery from such badland areas. Our paper describes how water and sediment fluxes have been monitored for almost 40 years in the small mountain catchments of this observatory.
Maxime Morel, Guillaume Piton, Damien Kuss, Guillaume Evin, and Caroline Le Bouteiller
Nat. Hazards Earth Syst. Sci., 23, 1769–1787, https://doi.org/10.5194/nhess-23-1769-2023, https://doi.org/10.5194/nhess-23-1769-2023, 2023
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In mountain catchments, damage during floods is generally primarily driven by the supply of a massive amount of sediment. Predicting how much sediment can be delivered by frequent and infrequent events is thus important in hazard studies. This paper uses data gathered during the maintenance operation of about 100 debris retention basins to build simple equations aiming at predicting sediment supply from simple parameters describing the upstream catchment.
Amande Roque-Bernard, Antoine Lucas, Eric Gayer, Pascal Allemand, Céline Dessert, and Eric Lajeunesse
Earth Surf. Dynam., 11, 363–381, https://doi.org/10.5194/esurf-11-363-2023, https://doi.org/10.5194/esurf-11-363-2023, 2023
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Sediment transport in rivers is an important matter in Earth surface dynamics. We offer a new framework of understanding of the suspended sediment transport through observatory chronicles and a simple model that is able to catch the behavior during a flood event as well as time series in a steep river catchment. We validate our approach in both tropical and alpine environments, which also offers additional estimates of the size of the suspended sediment.
Coline Ariagno, Caroline Le Bouteiller, Peter van der Beek, and Sébastien Klotz
Earth Surf. Dynam., 10, 81–96, https://doi.org/10.5194/esurf-10-81-2022, https://doi.org/10.5194/esurf-10-81-2022, 2022
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The
critical zonenear the surface of the Earth is where geologic substrate, erosion, climate, and life meet and interact. This study focuses on mechanisms of physical weathering that produce loose sediment and make it available for transport. We show that the sediment export from a monitored catchment in the French Alps is modulated by frost-weathering processes and is therefore sensitive to complex modifications in a warming climate.
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Short summary
We combine aerial and drone Light Detection and Ranging surveys with sediment export and density measurements to assess catchment-scale mass balance in a badland environment. Landslides and crest failures are found to contribute 15 % of total mass export while affecting only 1 % of bare surfaces. Flood-condition drainage reconstruction shows low-drainage areas export 3.5 times more sediment than other slopes.
We combine aerial and drone Light Detection and Ranging surveys with sediment export and density...
