Natural Hazards and Earth System Sciences
Natural Hazards and Earth System Sciences
NHESS
Articles | Volume 25, issue 12
Articles | Volume 25, issue 12
https://doi.org/10.5194/nhess-25-5055-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/nhess-25-5055-2025
© Author(s) 2025. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 25, issue 12
Brief communication
 | 
22 Dec 2025
Brief communication |  | 22 Dec 2025

Brief communication: Threshold and probability. The conceptual difference between ID thresholds for landslide initiation and IDF curves

Francesco Marra, Eleonora Dallan, Marco Borga, Roberto Greco, and Thom Bogaard

Data sets

Thresholds, not probability Francesco Marra https://doi.org/10.5281/zenodo.15845771

Model code and software

Thresholds, not probability Francesco Marra https://doi.org/10.5281/zenodo.15845771

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Short summary
We highlight an important conceptual difference between the duration used in intensity-duration thresholds and the duration used in the intensity-duration-frequency curves that has been overlooked by the landslide literature so far.
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