Temporal correlations and clustering of landslides

Auteur(s) et Affiliation(s)

WITT, A.

Dep. of Nonlinear Dynamics, Max-Planck-Inst. for Dynamics and Self-Organization, Göttingen, Allemagne

Dep. of geography, King's College, London, Royaume-Uni

MALAMUD, B.D.

Dep. of geography, King's College, London, Royaume-Uni

ROSSI, M.

Ist. di Ricerca per la Protezione Idrogeologica, Consiglio Nazionale delle Ricerche, Perugia, Italie

GUZZETTI, F.

Ist. di Ricerca per la Protezione Idrogeologica, Consiglio Nazionale delle Ricerche, Perugia, Italie

PERUCCACCI, S.

Ist. di Ricerca per la Protezione Idrogeologica, Consiglio Nazionale delle Ricerche, Perugia, Italie

Description :
This paper examines temporal correlations and temporal clustering of a proxy historical landslide time series, 2255 reported landslides 1951–2002, for an area in the Emilia-Romagna Region, Italy. Landslide intensity is measured by the number of reported landslides in a day and in an event of consecutive days with landsliding. The AA. provide a framework for examining these time series where the non-zero values are strongly unequally spaced and heavy-tailed, particularly important in the Earth Sciences due to their common occurrence, and find that landslide intensity time series exhibit temporal correlations and clustering. Many landslide models currently are designed under the assumption that landslides are uncorrelated in time, which they show is false.

Type de document :
Article de périodique

Source :
Earth surface processes and landforms, issn : 0197-9337, 2010, vol. 35, n°. 10, p. 1138-1156, nombre de pages : 19, Références bibliographiques : 2 p.

Date :
2010

Editeur :
Pays édition : Royaume-Uni, Chichester, Wiley

Langue :
Anglais