Natural Hazards and Earth System Sciences
Natural Hazards and Earth System Sciences
NHESS
Articles | Volume 26, issue 8
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.
https://doi.org/10.5194/nhess-26-3987-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 26, issue 8
Research article
 | 
21 Aug 2026
Research article |  | 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, Guillaume Chambon, Olivier Cerdan, Yannick Thiery, Nathalie Marçot, Louis Ferradou, Nicolas Saby, and Séverine Bernardie

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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.
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