Articles | Volume 17, issue 9
https://doi.org/10.5194/nhess-17-1487-2017
https://doi.org/10.5194/nhess-17-1487-2017
Brief communication
 | 
08 Sep 2017
Brief communication |  | 08 Sep 2017

Brief communication: Accuracy of the fallen blocks volume-frequency law

Valerio De Biagi

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Cited articles

Arnold, B.: Pareto distributions, Monographs on Statistics and Applied Probability, 2nd edn., CRC Press, New York, USA, 2015.
De Biagi, V., Napoli, M. L., Barbero, M., and Peila, D.: Estimation of the return period of rockfall blocks according to their size, Nat. Hazards Earth Syst. Sci., 17, 103–113, https://doi.org/10.5194/nhess-17-103-2017, 2017.
Malik, H.: Estimation of the parameters of the Pareto distribution, Metrika, 15, 126–132, 1970.
Straub, D. and Schubert, M.: Modeling and managing uncertainties in rock-fall hazards, Georisk, 2, 1–15, 2008.
Short summary
Some interesting questions were raised during the review process of a recent paper on a method for obtaining a fallen-block volume-frequency law, e.g. related to the minimum number of observations needed for obtaining the law. This brief communication addresses this point. In detail, the errors due to a reduced number of recorded fallen-block events and to the consistency of the measured blocks at the foot of the cliff are computed. This is useful for design purposes.
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