Generation of a landslide risk index map for Cuba using spatial multi-criteria evaluation |
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Authors: | E A Castellanos Abella C J Van Westen |
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Institution: | (1) Instituto de Geología y Palentología (IGP), Vía blanca y Carretera Central, San Miguel del Padrón, CP 11000 Havana, Cuba;(2) International Institute for Geoinformation Science and Earth Observation (ITC), P.O. Box 6, 7500 AA Enschede, The Netherlands |
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Abstract: | This paper explains the procedure for the generation of a landslide risk index map at national level in Cuba, using a semi-quantitative
model with ten indicator maps and a cell size of 90 × 90 m. The model was designed and implemented using spatial multi-criteria
evaluation techniques in a GIS system. Each indicator was processed, analysed and standardised according to its contribution
to hazard and vulnerability. The indicators were weighted using direct, pairwise comparison and rank-ordering weighting methods,
and weights were combined to obtain the final landslide risk index map. The results were analysed per physiographic region
and administrative units at provincial and municipal levels. The Sierra Maestra mountain system was found to have the largest
concentration of high landslide risk index values while the Nipe–Cristal–Baracoa system has the highest absolute values, although
they are more dispersed. The results obtained allow designing an appropriated landslide risk mitigation plan at national level
and to link the information to the national hurricane early warning system, allowing also warning and evacuation for landslide-prone
areas. |
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Keywords: | Landslide risk index Spatial multi-criteria evaluation Indicators Vulnerability Hazard Cuba |
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