Di Maio, Rosa and Milano, Leopoldo (2009) Characteristic scales in landslide modelling. [Pubblicazione in rivista scientifica]

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Item Type: Pubblicazione in rivista scientifica
Language: English
Title: Characteristic scales in landslide modelling
Creators:
CreatorsEmail
Di Maio, RosaUNSPECIFIED
Milano, LeopoldoUNSPECIFIED
Autor/s: PIEGARI E., DI MAIO R., MILANO L.
Date: 2009
Number of Pages: 9
Department: Scienze fisiche
Journal or Publication Title: NONLINEAR PROCESSES IN GEOPHYSICS
Date: 2009
Volume: 16
Page Range: pp. 515-523
Number of Pages: 9
Uncontrolled Keywords: Cellular automaton, landslide monitoring, landslide magnitude scale
Date Deposited: 21 Oct 2010 06:57
Last Modified: 30 Apr 2014 19:43
URI: http://www.fedoa.unina.it/id/eprint/7583

Abstract

We studied a cellular automaton, able to reproduce the landslide frequency-size distributions from catalogues. From the comparison between our synthetic probability distribution and the landslide area probability distribution of three landslide inventories, we estimated the typical size of a single cell of our cellular automaton model to be from 35–100m2, which is important information if we are interested in monitoring a test area. To determine the probability of occurrence of a landslide of size s, we show that it is crucial to get information about the rate at which the system is approaching instability rather than the nature of the trigger. By varying such a driving rate, we find how the probability distribution changes and, in correspondence, how the size and the lifetime of the most probable events evolve. We also introduce a landslide-event magnitude scale based on the driving rate. Large values of the proposed intensity scale are related to landslide events with a fast approach to instability in a long distance of time, while small values are related to landslide events close together in time and approaching instability slowly.

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