Prof. Dr. Ranko Biondić
Faculty of Geotechnical Engineering, University of Zagreb
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Academic Career Length
29Years (1998-Present)
(Calculated once Scilit publication data is synced: current year − year of first publication + 1)
Representative Publications
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Journal Article
Marko ŠrajbekLKLado Kranjčević
Lado KranjčevićIKIvan Kovač
Ivan KovačRanko BiondićNitrates are one of the most common groundwater contaminants and they come from different sources. The paper presents a study of groundwater quality at Varaždin wellfield in the north part of Croatia. The nitrate concentration at this location has been above the maximum allowed concentration for several decades, which has made the opening of new wellfields costly. Based on the previously developed groundwater flow model, a model that covers the narrow area of the wellfield is developed. The influential zone of the observed wellfield in working conditions is determined. Based on the developed model, the sources of nitrate pollution are located, which can be generally divided into non-point and point sources. Considering the time of groundwater retention in the horizontal flow, it is concluded that the water protection zones are marked following the applicable ordinance. Based on the developed groundwater flow model at the observed wellfield, a simulation of nitrate pollution propagation by advection and dispersion processes is performed. The simulation results point out the location of the poultry landfill as the largest source of nitrate pollution. However, poultry farms, which are located in the influence area of the wellfield, also contribute significantly to the nitrate concentration at the wellfield.
2 June 2010 in Geologia Croatica
Journal Article
The conceptual hydrogeological model of the Plitvice Lakes
22 November 2019 in Hydrological Sciences Journal
Journal Article
Kreso PandzicMKMira Kobold
Mira Kobold
Dijana OskorusBBBožidar Biondić
Božidar Biondić
Ranko BiondićOCOliver Curić
Oliver Curić
+2
The study addresses homogeneity testing of annual discharge time series for eight hydrological stations and five annual climate time series for one weather station in the Kupa River Basin, between Slovenia and Croatia, and global annual average surface temperature time series for the period 1961–2010. The standard normal homogeneity test (SNHT) was used to detect both abrupt and gradual linear trend homogeneity breaks. The results reveal natural change points at the beginning of the 1980s. Absolute homogeneity testing of average annual weather station-level air pressure, annual precipitation, differences between precipitation totals and potential evapotranspiration and surface runoff from the independent observation time series confirmed an abrupt shift, also at the beginning of the 1980s. The trend of local air temperature for 1985–2000, which partly coincides with global surface temperature trend for 1974–2005, strengthened the river discharge regime shift since the beginning of the 1980s. These results could improve climate variation monitoring and estimation of the impact of climate variation on the environment in the area. Generally, an indication of climate regime change points and an assessment of their duration could provide significant benefits for the society.
29 June 1998 in Environmental Geology
Journal Article
25 February 2006 in Environmental Geology
Journal Article
Journal Article
Ranko BiondićHMHrvoje Measki
Hrvoje MeaskiBBBožidar Biondić
Božidar BiondićJLJelena Loborec
Jelena LoborecKarst aquifers in the Dinaric karst are very rich with groundwater and are a very important resource for public water supply. The characteristics of the Dinaric karst are the lack, or very thin layer, of covering deposits, large amounts of precipitations, high groundwater velocities, very deep groundwater flow with a lot of faults and fault zones, pits to groundwater, concentrated sinking and large karst springs, making them extremely vulnerable to all anthropogenic influences, which are very quickly transmitted to the aquifer. Numerous multiparameter methods have been developed in the last 20 years to determine the level of vulnerability of aquifers. Each of them has its own specifics and is well adapted to the climate and region for which it was developed. The Karst Aquifer Vulnerability Assessment (KAVA) method was developed in accordance with all the characteristics of the deep karst aquifers of the Dinaric karst and tested on several basins in the area. It was developed as a part of the Global Environment Facility United Nations Environmental Programme – the Mediterranean Action Plan Strategic Partnership for the Mediterranean Sea Large Marine Ecosystem (GEF UNEP/MAP MedPartnership Project). This paper presents the KAVA method and its application to two characteristic karst basins of the Dinaric karst: the Novljanska Žrnovnica spring catchment area and the Bakar Bay catchment area.
About Me
Ranko Biondic has been vice-dean for finances at the Faculty of Geotechnical Engineering, University of Zagreb since 2020. From 1993 to 2006, he was employed at the Croatian Geological Survey, where he worked on a scientific project “Basic hydrogeological map of the Republic of Croatia”. In 2006, he started working as an assistant professor at the Faculty of Geotechnical Engineering, University of Zagreb. Since 2008, he has been the head of the International Relation Office at the Faculty of Geotechnical Engineering, and from 2009 to 2011, he was vice-dean for Research and International Cooperation. In July 2011, he was elected into the scientific teaching title of associate professor. From 2011 to 2016, he was the head of the Department of Hydrotechnics at the Faculty of Geotechnical Engineering. He has been a member of the Technical Area Council of the University of Zagreb since 2009. From October 1, 2016, to September 30, 2020, he was the Dean of the Faculty of Geotechnical Engineering and a member of the Senate of the University of Zagreb. In February 2017, he was elected into the scientific teaching title of a full professor. He is a member of the Scientific Council for Remote Sensing of the Croatian Academy of Sciences and Arts, the Croatian Geological Society, International Association of Hydrogeologists, International Association of Engineering Geology, and the Croatian Society for Water Protection.