Hard-rock catchments are considered to be source of valuable water resources for water supply to inhabitants and ecosystems. The present work aims to develop a groundwater vulnerability approach in the Caldas da Cavaca hydromineral system (Aguiar da Beira, Central Portugal) in order to improve the hydrogeological conceptual site model. Different types of information were overlaid, generating several thematic maps to achieve an integrated framework of key sectors in the study site. Thus, a multi-technical approach was used, encompassing field and laboratory techniques, whereby different types of data were collected from fields such as geology, hydrogeology, applied geomorphology and geophysics and hydrogeomechanics, with the fundamental aim of applying the so-called DISCO index method. All of these techniques were successfully performed and an intrinsic groundwater vulnerability to contamination assessment, based on the multicriteria methodology of GOD-S, DRASTIC-Fm, SINTACS, SI and DISCO indexes, was delineated. Geographic Information Systems (GIS) provided the basis on which to organize and integrate the databases and to produce all the thematic maps. This multi-technical approach highlights the importance of groundwater vulnerability to contamination mapping as a tool to support hydrogeological conceptualization, contributing to improving the decision-making process regarding water resources management and sustainability.
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机译:硬石流域被认为是宝贵的水资源,可为居民和生态系统供水。本工作旨在在Caldas da Cavaca矿山系统(葡萄牙中部的Aguiar da Beira)中开发一种地下水脆弱性方法,以改善水文地质概念站点模型。叠加了不同类型的信息,生成了几个专题图,以实现研究站点中关键部门的集成框架。因此,采用了涵盖现场和实验室技术的多技术方法,从而从地质,水文地质,应用地貌学,地球物理学和水文地质力学等领域收集了不同类型的数据,其基本目的是应用所谓的DISCO指数方法。所有这些技术均已成功实施,并根据GOD-S,DRASTIC-Fm,SINTACS,SI和DISCO指数的多标准方法,对地下水固有的易受污染性评估进行了描述。地理信息系统(GIS)提供了组织和集成数据库以及制作所有专题图的基础。这种多技术方法突显了地下水脆弱性对污染分布图的重要性,作为支持水文地质概念化的工具,有助于改善有关水资源管理和可持续性的决策过程。
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