Paralta, EduardoRibeiro, Luís F.2009-12-102009-12-102001Paralta, Eduardo; Ribeiro, Luís F. Stochastic modelling and probability risk maps of nitrate pollution in the vicinities of Beja, Alentejo, south Portugal. In: Proceedings of the 3rd International Conference on Future Groundwater Resources at Risk (FRG`01), CVRM/IST, Lisbon, Portugal, 2001http://hdl.handle.net/10400.9/517The groundwater resources study of the Alentejo region (CCR Alentejo, 1996-1999) was carried out in several places namely Beja's Gabbros Aquifer to assess water quality for public supply and agriculture. A geostatistical study of nitrate diffuse pollution in the vicinities of Beja based on probabilistical technics was developed in the context of a MSc Thesis in co-operation with CVRM - Geosystems Center. Several basic statistics between July 1997 and July 2000 were computed. Indicator variograms for nitrate ion with 50 mg/l cut-off are presented and Indicator Kriging is performed based on parameters fitted to spherical models. Risk and probability maps used in environmental management are also included.engRecursos hídricosÁguas subterrâneasPoluição da águaPoluição difusaNitratosKrigingModelos estocásticosRegião de Beja (Portugal)conference object