Articles | Volume 18, issue 4
https://doi.org/10.5194/nhess-18-1037-2018
https://doi.org/10.5194/nhess-18-1037-2018
Research article
 | 
04 Apr 2018
Research article |  | 04 Apr 2018

Regional rainfall thresholds for landslide occurrence using a centenary database

Teresa Vaz, José Luís Zêzere, Susana Pereira, Sérgio Cruz Oliveira, Ricardo A. C. Garcia, and Ivânia Quaresma

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Latest update: 02 Apr 2025
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Short summary
This work proposes a comprehensive method to assess rainfall thresholds for landslide initiation using centenary landslide and rainfall data. The method includes the identification of critical rainfall related to each landslide event, the calculation and calibration of rainfall thresholds and the evaluation of rain gauge spatial representativeness. Results show that thresholds based on a probabilistic approach are highly recommended and can be easily included in early warning systems.
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