2014, Volume LX, Issue No.1, ISSN 1802-5420
  • Influence of schematization detailness on the results of rainfall-runoff modelling in the Lubina river basin

    Martin Adamec, Lukáš Noska, David Vojvodík

    This paper, in a form of a case study, deals with the influence of detailed basin schematization on the results of rainfall-runoff modelling. Three schematizations with dissimilar details were created for the study area and subsequently a rainfall-runoff simulation was carried out by means of the HEC-HMS programme for a precipitation event. Resulting hydrographs were further compared with a real discharge measured in the closing profile of the model basin. The model basin is the Lubina River basin occupying c. 160 km2, characterized by significant altitudinal articulation and variable land use, so the comparison was not limited to one landscape type. The study also includes statistical evaluation of model accuracy by means of the Nash-Sutcliffe method. Finally, the results are discussed as well as probable reasons for the behaviour of the models.

  • Heavy metal contamination of landscape componets in surroundings of closed mercury deposit in Malachov (Slovakia)

    Jana Dadová, Jiří Kupka, Peter Barto, Erika Remešicová, Tomáš Štrba

    The present study investigates mercury contamination of soil, groundwater, surface water, vegetation and food commodities (fruit, vegetable, mushroom, and fish) close to the abandoned Hg deposit in Malachov, Central Slovakia. The soil was classified as cambi-soil (rendzina). Maximum concentrations of Hg (44.24 ppm) were found in the soil from the area nearby old mining activities in the Veľká Studňa locality. In the groundwater, 0.84 μg.L-1, and in the surface water, even 394 μg.L-1 of Hg content was found. Also plant tissues and mushrooms are Hg-contaminated (in the root of Salix fragilis, the Hg content was 22 mg.kg-1). The Hg concentration decreases in general in the following order: root, branch/stem, and leaf/needle. In the food commodities, the Hg content does not exceed the Slovak law limits. The Hg content in trout muscle (from the local Malachovský brook) is 252 μg.kg-1 and in liver 402 μg.kg-1.
    The calculation of an AMD formation potential (neutralisation potential, total acidity production, net neutralisation potential) is discussed as well. The value of the total acidity production potential (sensu Sobek et al., 1978) is low (1.562 – 3.125; with exception of a single sample, in which it increased to 9.375). On the other hand, the abundant presence of dolomite rocks causes a high neutralization potential value (up to 812.84). This result suggests that the assumption of the AMD production is excluded and the environmental risk from this viewpoint might be neglected.

  • The evaluation of selected air pollutants in Košice for the period 2008-2010

    Marcela Gergeľová, Žofia Kuzevičová, Štefan Kuzevič

    In general, air quality is determined from the concentrations of pollutants in ambient air. Air quality criteria (limit and target values, margin of tolerances, upper and lower assessment thresholds) are based on the current legislative framework. In Slovakia, the air quality criteria are imposed by Decree No 360/2010 Coll, on air quality, of the Ministry of Environment. In relation to the implemented measurements, it is necessary to choose effective tools needed for the pre-processing and post-processing of overall air quality assessment. The article aims at applying suitable GIS tools in the assessment process of air quality in the Košice agglomeration for the selected period 2008-2010. In the overall assessment of the area in question, the processing of information on emissions declared as particulate matter (PM) was considered in terms of a conservative approach to the assessment of air quality for PM10. For the assessment, the yearbooks and reports on air quality in Slovakia in 2008-2010 of the Slovak Hydrometeorological Institute (SHMI) and professional publications were used.

  • Possibilities of application of static investment appraisal methods for optimizing purchase under conditions of mine rescue service

    Jana Magnusková, Zdeněk Pavelek, Lucie Krčmarská

    The present article focuses on the importance of making investment decisions and its long-term effect on the economy of companies. It presents a specific investment in the recovery of rescue equipment used for interventions in the irrespirable or deleterious environment on an example of the company HBZS, a.s. The objective is to evaluate the effectiveness of the investment project using static methods in relation to setting an optimal price level for leasing the equipment. The optimization of such setting is examined in terms of the economic lifetime of relevant tangible fixed assets.

  • Analysis of geodetic network established inside the Dobšinská ice cave space

    Juraj Gašinec, Silvia Gašincová, Vladislava Zelizňaková, Jana Palková

    The present article summarizes the progress and results of geodetic works during the construction of a geodetic network inside the Dobšinská Ice Cave underground space to monitor temporal and spatial changes in its ice filling. In order to objectively evaluate the changes, parameter estimations of the first- and second-order of the geodetic network from the set of field geodetic measurements were provided, and a robust analysis of the network was applied in terms of the assessment of impacts of potential outlier measurements on the network geometry.

  • Overview of research and use of indicator gases of coal spontaneous combustion in China

    Xiyang Feng, Alois Adamus

    The beginnings of research and use of results in the area of indicator gas application for early detection of spontaneous combustion of coal in China comes from the sixties of the last century. The significant development occurred in the nineties, when the program “Characteristics of the adsorption of coal oxygen and its application in the prevention of mine fires” had been completed. The paper briefly describes an overview of the historical development, achievements, experimental methods, laboratory equipment, legislation, and the outlook for the use of indicator gases of coal spontaneous combustion in China.