@ARTICLE{Kania_Jarosław_Hydrogeochemical_2000, author={Kania, Jarosław}, number={No 4}, journal={Gospodarka Surowcami Mineralnymi - Mineral Resources Management}, pages={107-123}, howpublished={online}, year={2000}, publisher={Komitet Zrównoważonej Gospodarki Surowcami Mineralnymi PAN}, publisher={Instytut Gospodarki Surowcami Mineralnymi i Energią PAN}, abstract={Geostatistical modelling procedures initially developed for the documenting of ore is finding wider application in hydro geological studies. As a result of the possibility of interpreting sampling data as for regional variations, some authors suggest the application of geostatistical estimation when defining the spatial characteristics of the hydrogeochemical background. This paper presents on the basis of gcostatistical analysis and probability curves the actual hydrogeochemical background for groundwater of the Quaternary formation in the surrounds of ex-open cast sulphur mines in the Tarnobrzeg region. The area under study has an area of about 900 km2. The indicator chloride and sulphate ions were selected as being a threat to the quality of groundwater and surface waters in the area under inspection. An estimation of the spatial variability of the indicator ions was achieved geostatisticaly (kriging procedure) using the Geo-EAS computer program. The kriging method estimation of the spatial distribution was preceded by choosing a semivariogram model. For both cases the best approximation of the calculated empirical semivariogram (averaged) was obtained by using a Gaussian model. The best choice of theoretical model enabled the course of relative semivariograms. The characteristic arrangement of the content ofindicatory ions wijh the help of the isoline map was preceded by the kriging block method estimation (as a result of the irregular arrangement of sampling points) of the content of chloride and sulphate ions in the counting blocks (2000 m by 2000 m) covering the area being examined. For each case a relative error estimation map of the content of indicator was prepared.}, type={article}, title={Hydrogeochemical background in the region of liquidated open cast sulphur mines on the basis of geostatistical modelling and probability curves}, URL={http://ochroma.man.poznan.pl/Content/132872/PDF-MASTER/12_GSM_16_4_2000_Kania_Hydrogeochemical.pdf}, keywords={hydrogeology, hydrogeochemical background, geostatistics}, }