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Earthquake-induced landslide hazard monitoring and assessment using SOM and PROMETHEE techniques: a case study at the Chiufenershan area in Central Taiwan / W.T. Lin in International journal of geographical information science IJGIS, vol 22 n° 8-9 (august 2008)  

Public [article]  inInternational journal of geographical information science IJGIS > vol 22 n° 8-9 (august 2008) . - pp 995 - 1012 Titre : Earthquake-induced landslide hazard monitoring and assessment using SOM and PROMETHEE techniques: a case study at the Chiufenershan area in Central Taiwan Type de document : Article/Communication Auteurs : W.T. Lin, Auteur Année de publication : 2008 Article en page(s) : pp 995 - 1012 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG [Termes IGN] carte de Kohonen [Termes IGN] cindynique [Termes IGN] effondrement de terrain [Termes IGN] image multitemporelle [Termes IGN] image SPOT [Termes IGN] outil d'aide à la décision [Termes IGN] planification urbaine [Termes IGN] risque naturel [Termes IGN] séisme [Termes IGN] surveillance géologique [Termes IGN] Taïwan Résumé : (Auteur) Monitoring and assessment of landslide hazard is an important task for decision making and policy planning in the landslide area. Massive landslides, caused by the catastrophic Chi-Chi earthquake in 1999, occurred in Central Taiwan, especially at Chiufenershan area in Nantou county. This study proposed two useful indicators coupled with the Self-organizing map (SOM) neural network and the Preference Ranking Organization METHod for Enrichment Evaluations (PROMETHEE) technique to quickly extract accurate post-quake landslides from multi-temporal Systeme Probatoire de l'Observation de la Terre (SPOT) images. A GIS-based system was developed to simplify and integrate the procedures such as image pre-processing, the SOM training, the PROMETHEE calculation, landslide extraction and accuracy assessment. The evaluated result shows that the landslide area soon after the earthquake is 209.50 ha (Kappa coefficient 96.88%). Over seven years of vegetation recovery, the denudation area has declined to 112.64 ha (Kappa coefficient 90.64%). Most earthquake-induced landslides could be restored by natural vegetation succession. The developed system is a useful decision-making tool for landslide area planning. Copyright Taylor & Francis Numéro de notice : A2008-312 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/13658810801914458 En ligne : https://doi.org/10.1080/13658810801914458 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=29305 [article]

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