GIS-based MCDM – AHP modeling for flood susceptibility mapping of arid areas, southeastern Tunisia - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Geocarto International Année : 2020

GIS-based MCDM – AHP modeling for flood susceptibility mapping of arid areas, southeastern Tunisia

Dhekra Souissi
  • Fonction : Auteur
Salma Hammami
  • Fonction : Auteur
Mohamed Haythem Msaddek
Adel Zghibi
Mahmoud Dlala
  • Fonction : Auteur

Résumé

Floods are considered as a major natural disaster due to their devastating effects that lead to socio-economic losses. The present study is an attempt to prepare a flood hazard susceptibility map of the Gabes region using ‘multi-criteria decision making – analytical hierarchy process’ model in geographic information system environment. Eight factors have been used in the flood modeling: elevation, land use/land cover, lithology, rainfall intensity, drainage density, distance from the drainage network, slope, and groundwater depth. The impact of each factor contributing in the flood risk was examined by weights using analytical hierarchy process method. The results obtained shows that the most prominent flood occurrence factor is the elevation (22.5%), around 15% of the total area is flooded and the flood hazard index is equal 6.30. The validation of results by a susceptibility zones histogram showed that 74.51% of the observed flood areas are mainly concentrated in a moderate to very high susceptibility zone.
Fichier non déposé

Dates et versions

hal-02949239 , version 1 (25-09-2020)

Identifiants

Citer

Dhekra Souissi, Lahcen Zouhri, Salma Hammami, Mohamed Haythem Msaddek, Adel Zghibi, et al.. GIS-based MCDM – AHP modeling for flood susceptibility mapping of arid areas, southeastern Tunisia. Geocarto International, 2020, 35 (9), pp.991-1017. ⟨10.1080/10106049.2019.1566405⟩. ⟨hal-02949239⟩
51 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More