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(Article of periodic en Anglais - 2012)

Document title

Statistical and environmental analyses for the definition of a regional rainfall threshold system for landslide triggering in Tuscany (Italy)

Authors(s) and Affiliation(s)

ROSI A. (1) ; SEGONI S. (1) ; CATANI F. (1) ; CASAGLI N. (1) ;
(1) Dep. of Earth Science, Univ., Florence, ITALIE

Abstract

The critical rainfall events related to the occurrence of 593 past landslides in the Tuscany Region (Central Italy), between 2000 and 2007, were characterized in terms of duration (D) and intensity (I). I and D values were plotted in a log-log diagram and a lower boundary was clearly noticeable : it was interpreted as a threshold representing the rainfall conditions associated to landsliding which is consistent with literature thresholds. The influence of predisposing factors (such as lithology and land use) and rainfall characteristics was investigated as well and statistical analysis revealed to be the most effective way to define a more advanced early warning system based on a set of multiple thresholds. Four thresholds corresponding to four severity levels were defined by means of the prediction interval technique and the AA. developed a prototype warning system based on rainfall recordings or weather forecasts

Source

Article of periodic

published at : Journal of geographical sciences. Acta geographica sinica / ISSN 1009-637X

Editor : CHINE

Millesime : 2012, vol. 22, no4 [pp. 617-629]

Bibliographic references : 31 ref.

Collation : 8 fig.

Language

Anglais

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1007/s11442-012-0951-0

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2012
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