Spatio-temporal cluster analysis of recent Italian landslides

Details

Serval ID
serval:BIB_0F876F3E207F
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Spatio-temporal cluster analysis of recent Italian landslides
Journal
Georisk: Assessment and Management of Risk for Engineered Systems and Geohazards
Author(s)
Tonini M., Pecoraro G., Romailler K., Calvello M.
ISSN
1749-9518
1749-9526
Publication state
Published
Issued date
22/12/2020
Peer-reviewed
Oui
Volume
16
Pages
1-19
Language
english
Abstract
The present study addresses the pattern distribution of recent landslides in Italy. The main objective is the detection and mapping of spatio-temporal clusters of landslides that occurred in the period 2010–2017 in the country. To this aim, a subdivision of the national area into 158 warning zones, as identified by the 21 civil protection regional centres to deal with weather-induced hydro-geological hazards, is adopted. Information on landslides comes from FraneItalia, a geo-referenced catalogue developed consulting online news sources. Analyses are performed both at national scale and at a regional scale, focusing on the Campania region. The space–time permutation scan statistics model is applied to detect statistically significant clustering, accounting for the geographical spatial dimension and for the temporal dimension. Two types of analyses are performed: annual, considering each single year; and multi-annual, encompassing the entire 8-year study period. In both cases, spatio-temporal cluster analyses are able to detect areas and frame-periods characterised by relevant and recurrent landslide activity. Finally, the obtained results are compared with a standard landslide density map, highlighting the complementarity of the two approaches.
Keywords
FraneItalia, landslides, scan statistics, clusters, landslide recurrence
Create date
05/01/2021 11:38
Last modification date
14/05/2024 7:14
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