engleski

Conceptual model for groundwater status and risk assessment - case study of the Zagreb aquifer system

A conceptual model of the Zagreb aquifer system was developed that can be applied to groundwater status risk assessment and pollution risk assessment at the local scale, thus satisfying both environmental and preventative/limitation objectives of the Water Framework Directive (WFD) and Groundwater Directive (GWD). Its main purpose is to apply a risk assessment procedure, according to the WFD requirements, and to serve as a foundation for setting up a numerical model of flow in both the saturated and unsaturated zones in order to identify pressure and impact effects on groundwater quality. Due to knowledge gaps in the understanding of the Zagreb aquifer system, and aquifer behaviour at different scales, the model is divided into two parts, taking into account the WFD requirement to assess a risk for a wide range of source-pathway-receptor relationships. The Global Conceptual Model (GCM) provides insight into the processes at the level of the groundwater system. A Local Conceptual Model (LCM) supports parameterization of the whole groundwater system through the description of heterogeneities and flow and solute parameters of the groundwater system components at site scale. This concept can be regarded as an effective tool for groundwater management of the groundwater system and its compartments and for communicating the conditions in complex groundwater systems with experts, policy makers and general public in an understandable way.

Global conceptual model (GCM) ; Local conceptual model (LCM) ; risk and status assessment ; groundwater quality ; Zagreb aquifer system.

Zoran Nakić i Stanko Ružičić glavni su autori rada