[ Contribution à la cartographie du milieu et des risques liés aux crues d'Oued El Maleh (Tunisie Orientale) ]
Volume 12, Issue 1, July 2015, Pages 218–227
Rajouene Majdoub1, Riadh Bouaziz2, Youssef M'Sadak3, Marwa Fourati4, and Thouraya Lahmar5
1 Department of Horticultural Engineering Systems and Natural Environment, University of Sousse, High Institute of Agronomy of Chott Meriem, Chott Meriem, Sousse, Tunisia
2 Laboratoire CGMED, Université de Sfax, Faculté des Lettres et des Sciences Humaines de Sfax, Sfax, Tunisia
3 Department of the Genius of the Horticultural Systems and the Natural Environment, Higher Agronomic Institute of Chott-Mariem, University of Sousse, Tunisia
4 Département du Génie des Systèmes Horticoles et du Milieu Naturel, Université de Sousse, Institut Supérieur Agronomique de Chott Mariem, Sousse, Tunisia
5 Département du Génie des Systèmes Horticoles et du Milieu Naturel, Université de Sousse, Institut Supérieur Agronomique de Chott Mariem, Sousse, Tunisia
Original language: French
Copyright © 2015 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
The elaboration of vulnerability maps remains a fundamental tool in the management and study of flood-related risks (floods and hydric erosion). This study aims to develop these maps through Geographic Information Systems (GIS), which can be used as basic documents for any action of developments in the watershed of Oued El Maleh in M'Saken region (eastern Tunisia). This region is characterized by the weakness of its topography and its slopes. Its rainfall, generally irregular and sometimes aggressive and torrential, can transform rivers which are often very little marked in nature, to real torrents with great erosive power, able to lead to flooding. This natural vulnerability is accentuated by the spreading of several urban areas in submersibles zones, in particular that of M'Saken, and by the development of the agricultural lands. In this context, the present study focused on the collection of digitized topographic maps, of Landsat images and others of Google Earth in order to create an integrated database in a Geographic Information System. The results are thematic maps which make it possible to define and analyze, by superposition of several layers of information, the natural environment; and to carry out a spatial analyzes required to characterize, map, and study the vulnerability.
Author Keywords: Vulnerability, Floodings, GIS, Oued El Maleh, Eastern Tunisia.
Volume 12, Issue 1, July 2015, Pages 218–227
Rajouene Majdoub1, Riadh Bouaziz2, Youssef M'Sadak3, Marwa Fourati4, and Thouraya Lahmar5
1 Department of Horticultural Engineering Systems and Natural Environment, University of Sousse, High Institute of Agronomy of Chott Meriem, Chott Meriem, Sousse, Tunisia
2 Laboratoire CGMED, Université de Sfax, Faculté des Lettres et des Sciences Humaines de Sfax, Sfax, Tunisia
3 Department of the Genius of the Horticultural Systems and the Natural Environment, Higher Agronomic Institute of Chott-Mariem, University of Sousse, Tunisia
4 Département du Génie des Systèmes Horticoles et du Milieu Naturel, Université de Sousse, Institut Supérieur Agronomique de Chott Mariem, Sousse, Tunisia
5 Département du Génie des Systèmes Horticoles et du Milieu Naturel, Université de Sousse, Institut Supérieur Agronomique de Chott Mariem, Sousse, Tunisia
Original language: French
Copyright © 2015 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
The elaboration of vulnerability maps remains a fundamental tool in the management and study of flood-related risks (floods and hydric erosion). This study aims to develop these maps through Geographic Information Systems (GIS), which can be used as basic documents for any action of developments in the watershed of Oued El Maleh in M'Saken region (eastern Tunisia). This region is characterized by the weakness of its topography and its slopes. Its rainfall, generally irregular and sometimes aggressive and torrential, can transform rivers which are often very little marked in nature, to real torrents with great erosive power, able to lead to flooding. This natural vulnerability is accentuated by the spreading of several urban areas in submersibles zones, in particular that of M'Saken, and by the development of the agricultural lands. In this context, the present study focused on the collection of digitized topographic maps, of Landsat images and others of Google Earth in order to create an integrated database in a Geographic Information System. The results are thematic maps which make it possible to define and analyze, by superposition of several layers of information, the natural environment; and to carry out a spatial analyzes required to characterize, map, and study the vulnerability.
Author Keywords: Vulnerability, Floodings, GIS, Oued El Maleh, Eastern Tunisia.
Abstract: (french)
L'élaboration des cartes de vulnérabilité demeure un outil fondamental dans la gestion et l'étude des risques liés aux crues (inondations et érosion hydrique). Ce travail a pour objectif d'établir ces cartes, moyennant les Systèmes d'Information Géographique, pouvant servir comme documents de base pour toute action d'aménagement du sous bassin versant d'Oued El Maleh de la région de M'Saken (Tunisie orientale). Cette région semi-aride se caractérise par la faiblesse de sa topographie et de ses pentes. Sa pluviométrie est généralement irrégulière, mais parfois agressive et torrentielle, ce qui peut transformer les oueds à de véritables torrents à grand pouvoir érosif capable de provoquer des inondations. Cette vulnérabilité naturelle est accentuée, par l'étalement de plusieurs agglomérations dans des zones submersibles et par la mise en valeur des terres agricoles. Dans ce cadre, le présent travail a porté sur la collecte des cartes topographiques numérisées, des images satellitaires Landsat TM et d'autres de Google Earth, afin de créer une base de données intégrée dans un SIG. Les résultats obtenus sont sous forme des cartes thématiques qui permettent de définir et d'analyser, par superposition de plusieurs couches d'informations, le milieu naturel ; et de réaliser des analyses spatiales nécessaires, entre autres, pour caractériser, cartographier et classer la vulnérabilité aux inondations et à l'érosion hydrique.
Author Keywords: Vulnérabilité, Inondations, SIG, Oued El Maleh, Tunisie orientale.
How to Cite this Article
Rajouene Majdoub, Riadh Bouaziz, Youssef M'Sadak, Marwa Fourati, and Thouraya Lahmar, “Contribution to mapping the environment and the flood risk of Oued El Maleh (Eastern Tunisia),” International Journal of Innovation and Applied Studies, vol. 12, no. 1, pp. 218–227, July 2015.
