Scholarlink

<p>Heterogeneous aquifers, particularly those located in complex fractured geological formations, present particularly variable hydrogeological dynamics, making them highly vulnerable to pollution phenomena. Their assessment and management require robust, site-specific methodological approaches. In this context, the DISCO (DISContinuities and COuvercle de protection) method was used to identify naturally protected zones and delineate areas requiring priority intervention to preserve groundwater. The spatial integration of the data was carried out using Geographic Information System (GIS), enabling the production of detailed thematic maps illustrating the levels of vulnerability and protection of groundwater resources. The method used was based on looking at two key factors: structural discontinuities in terms of density and direction, and the properties of the soil cover, which acts as a natural barrier to keep pollutants from getting in. We used cartographic algebra to combine these two characteristics and find an intermediate protection index. Previous studies have applied the DISCO method and other approaches to groundwater protection in fractured media using a vulnerability-based framework for delineating protection zones, particularly in Switzerland. These methods aim to improve protection mapping by integrating hydrogeological conditions and the natural vulnerability of subsurface formations.The study was then improved by adding information about surface runoff characteristics. The vulnerability map that was made showed that the watershed could be divided into four major zones: one with very low safeguarding and very high vulnerability, one with low protection and high vulnerability, one with moderate protection and vulnerability, and finally one with high natural protection and very low vulnerability. The results demonstrate the efficacy of the DISCO technique, in conjunction with GIS technologies, as a pertinent analytical framework for pinpointing vulnerable areas and formulating strategic plans for groundwater resource management in diverse fractured settings. This method provides a reliable and effective decision-support tool for sustainable water resource management, ensuring environmentally sound planning and informed management strategies, while enabling faster decision-making, particularly for authorities with limited financial resources.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Groundwater vulnerability and protection mapping using the DISCO method and GIS in the heterogeneous fractured media of the Abdi Wadi Watershed, Aures Massif (Algeria)

  • 期刊论文

  • 发表日期：

    2026年6月26日

查看全文
  • Mohammed Bendjerad,
  • Dinar Haythem,
  • Nabil Bougherira,
  • Hicham Chaffai,
  • Rebouh Nouh,
  • Ahmed Alliouche,
  • Selwa Boubguira,
  • Imtiyaz Akbar Najar

摘要

Heterogeneous aquifers, particularly those located in complex fractured geological formations, present particularly variable hydrogeological dynamics, making them highly vulnerable to pollution phenomena. Their assessment and management require robust, site-specific methodological approaches. In this context, the DISCO (DISContinuities and COuvercle de protection) method was used to identify naturally protected zones and delineate areas requiring priority intervention to preserve groundwater. The spatial integration of the data was carried out using Geographic Information System (GIS), enabling the production of detailed thematic maps illustrating the levels of vulnerability and protection of groundwater resources. The method used was based on looking at two key factors: structural discontinuities in terms of density and direction, and the properties of the soil cover, which acts as a natural barrier to keep pollutants from getting in. We used cartographic algebra to combine these two characteristics and find an intermediate protection index. Previous studies have applied the DISCO method and other approaches to groundwater protection in fractured media using a vulnerability-based framework for delineating protection zones, particularly in Switzerland. These methods aim to improve protection mapping by integrating hydrogeological conditions and the natural vulnerability of subsurface formations.The study was then improved by adding information about surface runoff characteristics. The vulnerability map that was made showed that the watershed could be divided into four major zones: one with very low safeguarding and very high vulnerability, one with low protection and high vulnerability, one with moderate protection and vulnerability, and finally one with high natural protection and very low vulnerability. The results demonstrate the efficacy of the DISCO technique, in conjunction with GIS technologies, as a pertinent analytical framework for pinpointing vulnerable areas and formulating strategic plans for groundwater resource management in diverse fractured settings. This method provides a reliable and effective decision-support tool for sustainable water resource management, ensuring environmentally sound planning and informed management strategies, while enabling faster decision-making, particularly for authorities with limited financial resources.