Paper illustrates continuation of former research work in the field of stable isotope composition investigations of bottled waters. Empirical distributions of stable isotope components were examined. Mathematical models of unimodal and polymodal probability density functions were applied for their description. A normal (Gaussian) finite mixture model as representation of the poly modal empirical distribution of dissolved carbon isotopic composition was used as a classification tool. Finally, based on the classification groups were interpreted from the hydrogeological point of view.
COBISS.SI-ID: 837982
In the study the main geogenic geochemical trends as well as an anomaly of high concentrations of heavy metals were established. It was found that the concentrations of heavy metals in the vicinity of lead smelter and the urban area of Veles for a couple of times officially exceeded certain critical values. At the same time the critical area of soil contamination with heavy metals, especially cadmium, lead and zinc is limited. Critical area of contaminated land in relation to our results is 6.6 km2. The research is one of the guiding principles for future remedial actions in the area of Veles.
COBISS.SI-ID: 1696341
With the use of Self Organizing Maps, we demonstrated how to clearly answer to this problem. The disadvantage of most commonly used method for the determination of groups of elements (multivariate statistics - factor and cluster analysis) is that it does not allow the use of non-normal distributed and parametrical variables, which are very commonly presented in the field of geological investigation (like lithology, soil type, distance from the source of pollution). But we clearly demonstrated the posibility to use such variables in self organizing maps clustering with great success
COBISS.SI-ID: 1778005
The article presents the comparison between Hydrus2D and Alliances computer codes for hydraulic and transport calculations in the Special Safety Analysis for the future Slovenian low and intermediate level waste repository at the Krško site. The layout and characteristics of the repository are presented and a hydraulic and transport model of the repository is developed. Some analysis of sensitivity to mesh fineness and to simulation timestep has been preformed and is also presented. Finally the results from Hydrus2D and Alliances are compared and the differences and similarities are explained.
COBISS.SI-ID: 1720679
Modelling of hydrological processes in karst aquifers is one of the biggest challenges in the field of hydrogeology. The paper presents conceptual approach of modelling that describes hydrological processes with combination of physically-based and empirical equations. This approach enables use of existing knowledge and data and simplification for those processes that cannot be accurately described. For the use in water management, modelling approach, which has been successfully tested in complex karst aquifer system, could be adapted to many other karst water resources.
COBISS.SI-ID: 1724245