Articles | Volume 26, issue 8
https://doi.org/10.5194/nhess-26-3987-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-26-3987-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
21 Aug 2026
Research article |
| 21 Aug 2026
| 21 Aug 2026
Impact of extreme rainfall on triggering conditions and susceptibility for shallow landslides: a case study in the Alpes-Maritimes region (France)
Lucie Armand
CORRESPONDING AUTHOR
Univ. Grenoble Alpes, INRAE, CNRS, IRD, Grenoble INP, IGE, 38000 Grenoble, France
BRGM, 45060 Orléans, France
Guillaume Chambon
Univ. Grenoble Alpes, INRAE, CNRS, IRD, Grenoble INP, IGE, 38000 Grenoble, France
Olivier Cerdan
BRGM, 45060 Orléans, France
Yannick Thiery
BRGM, 33600 Pessac, France
Nathalie Marçot
BRGM, 13276 Marseille, France
Louis Ferradou
BRGM, 13276 Marseille, France
Nicolas Saby
INRAE, Unité Info&Sol, 45075 Orléans, France
Séverine Bernardie
BRGM, 45060 Orléans, France
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Short summary
This research examines how extreme-rainfall-induced landslides affect predictive tools for shallow landslides. Focusing on Storm Alex (France), we compared predictions with and without Alex-induced landslides. Results show that Alex-induced landslides do not follow the same triggering conditions as those observed during more frequent rainfalls, leading to different rainfall thresholds and susceptibility maps. This highlights the importance of accounting for rare events when predicting landslide.
This research examines how extreme-rainfall-induced landslides affect predictive tools for...
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