|
| << vorige | volgende >> |
Tijdschrift beschrijving
Alle jaargangen van het bijbehorende tijdschrift
Alle afleveringen van het bijbehorende jaargang
Alle artikelen van de bijbehorende aflevering
Details van artikel 5 van 8 gevonden artikelen
| Titel: |
Earthquake-induced landslide hazard monitoring and assessment using SOM and PROMETHEE techniques: A case study at the Chiufenershan area in Central Taiwan |
| Auteur: |
Lin, Wen-Tzu |
| Verschenen in: |
International journal of geographical information science |
| Paginering: | Jaargang 22 (2008) nr. 9 pagina's 995-1012 |
| Jaar: |
2008 |
| Inhoud: |
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. |
| Uitgever: |
Taylor & Francis |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 5 van 8 gevonden artikelen
| << vorige | volgende >> |