PL EN
Mapping ground collapse vulnerability in a climate-responsive karst area: A GIS and AHP approach in Abda Doukkala, Morocco
 
More details
Hide details
1
3GIE Laboratory, Mineral Engineering Department, Mohammadia Engineering School, Mohammed V University, Rabat, Morocco
 
2
Euromed Polytechnic School, Euromed University of Fes, Fez 30030, Morocco
 
 
Corresponding author
Mustapha Rharouss   

3GIE Laboratory, Mineral Engineering Department, Mohammadia Engineering School, Mohammed V University, Rabat, Morocco
 
 
 
KEYWORDS
TOPICS
ABSTRACT
The Doukkala-Abda region, situated in central-western Morocco, known for its karst cavities and collapses. These underground collapses pose a major risk, particularly to the population. Hence, the purpose of this article, which aims to build susceptibility maps of karst collapses in the community of Moul El Bergui belonging to this region. This susceptibility map was created based on Geographic Information System method and Analytical Hierarchy Process. Several factors are responsible for karst collapse. Nine parameters were chosen in the present study. These factors are slope, altitude, aspect, hydrographic density, fracture density, land cover, normalized difference vegetation index, precipitation and lithology. Their maps were prepared with ArcGIS software. Subsequently, AHP was employed to rank and weight factors according to their importance in causing karst collapses. Finally, the combination of index maps in ArcGIS allowed the creation of the final vulnerability map, which is divided into five classes, from very low to very high. The results illustrate high prevalence of moderate and high classes. Based on identified collapses and geophysical prospection in the area, the resulting map was validated using Area Under the Curve. AUC value obtained of 92.6% reflects an excellent degree of prediction. Thus, these findings can help decision makers in land use planning to prevent areas of potential collapses within such environments.
Journals System - logo
Scroll to top