标题：Métodos geoestadísticos para la elaboración de mapas de probabilidad de riesgo hidrogeotóxico (HGT) por altas concentraciones de As en las aguas subterráneas. Aplicación a la distribución de HGT en la provincia de Ávila (España)
摘要：The presence of As in groundwater is a priority public health issue because it imposes serious restrictions on drinking water. Mapping probabilities of exceedance of the threshold permitted by the World Health Organization, WHO (10 μg/L) allow delimiting the most vulnerable areas. The existing geostatistical techniques are a common tool for the evaluation of these maps, though, there is no agreement on which of the methods is the best. In this study different comparison criteria are illustrated. Seven non-parametric kriging methods are used to estimate the map of probability of exceeding the As concentration the limit of 10 mg/L in groundwater at the province of Ávila. Performed validation reveals that one the best results correspond to the simplicial indicator kriging, never before compared in studies of presence of geogenic As in groundwater.
关键词：arsenic;groundwater;hydrogeotoxicity risk;indicator kriging;cross validation.;arsénico;aguas subterráneas;riesgo hidrogeotóxico HGT;kriging de indicadores;validación cruzada.
