Selected publications Árvai M., Popa I., Mindrescu M, Nagy B., Kern Z. (2016) Dendrochronology and radiocarbon dating of subfossil conifer logs excavated from a peat bog, Maramures Mts, Romania. Quaternary International 415: 6-14., doi: 10.1016/j.quaint.2015.11.066 Kern Z., Németh A., Horoszné Gulyás M., Popa, I., Levanic, T., Hatvani I.G. (2016) Natural proxy records of annual temperature- and hydroclimate variability from the Carpathian-Balkan Region for the past millennium: review & recalibration. Quaternary International 415: 109-125, doi: 10.1016/j.quaint.2016.01.012 Takács K., Kern Z. (2015) Multidecadal changes in the river ice regime of Drava River lower course since AD 1875. Journal of Hydrology 529: 1890-1900. doi:10.1016/j.jhydrol.2015.01.040 Kern Z., Patkó, M., Kázmér, M., Fekete, J., Kele, S., Pályi, Z. (2013) Multiple tree-ring proxies (earlywood width, latewood width and δ13C) from pedunculate oak (Quercus robur L.), Hungary. Quaternary International 239: 257-267. doi: 10.1016/j.quaint.2012.05.037 Kern, Z.; László, P. (2010) Size specific steady-state accumulation-area ratio: an improvement for equilibrium-line estimation of small palaeoglaciers. Quaternary Science Reviews 29: 2782-2788. doi:10.1016/j.quascirev.2010.06.033
Terrestrial in situ produced cosmogenic nuclides – a geochronological tool for Quaternary geology and geomorphology. Terrestrial in situ produced Cosmogenic Nuclides (TCN) are suitable for the determination of the exposure age and denudation rate of rock surfaces and landforms. The method is applicable in the time range of 102 to 106years and at variable lithologies. This time range covers the entire Quaternary and Pliocene hence it has occupied a significant role among the tools of Quaternary geochronology. We apply two in-situ produced cosmogenic radionuclides, the 10Be (t1/2 : 1,387 Ma) and 26Al (t1/2: 705 ka) for the age determination of fluvial, eolian and glacial landforms at selected study areas in the Pannonian Basin and in the surrounding Carpathians. Dating landforms connected to structural deformation (and/or climatic processes) enables one to quantify rates of surface denudation and of vertical deformation. Besides, landforms of known age connected to certain paleoclimate conditions are suitable for the paleoclimate reconstruction of the study area. In-situ produced cosmogenic 10Be and 26Al sample preparation laboratory Selected publications Ruszkiczay-Rüdiger, Zs., Braucher, R., Novothny, Á., Csillag, G., Fodor, L., Molnár, G., Madarász, B., ASTER Team. 2016. Tectonic and climatic forcing on terrace formation: coupling in situ produced 10Be depth profiles and luminescence approach, Danube River, Hungary, Central Europe. Quaternary Science Reviews 131, 127-147. Ruszkiczay-Rüdiger, Zs., Kern, Z., Urdea, P., Braucher, R., Madarász, B., Schimmelpfennig, I., ASTER Team 2016. Revised deglaciation history of the Pietrele- Stânişoara glacial complex, Retezat Mts, Southern Carpathians, Romania. Quaternary International, 415, 216-229. doi:10.1016/j.quaint.2015.10.085 Ruszkiczay-Rüdiger, Zs., Braucher, R., Csillag, G., Fodor, L., Dunai, T.J., Bada, G., Bourlés, D., Müller, P. 2011 Dating pleistocene aeolian landforms in Hungary, Central Europe, using in situ produced cosmogenic 10Be. Quaternary Geochronology, 6, pp. 515-529. Ruszkiczay-Rüdiger, Zs., 2004 Kitettségi kor és eróziós ráta meghatározásának módszere helyben keletkező kozmogén izotópokkal. FÖLDTANI KÖZLÖNY 134:(2) pp. 257-279.
Water geochemistry deals with the certain elements of the water cycle, in it with the interaction of water and its environment (including the human environment) and water flow dynamics. It handles environmental isotopes, and physical/chemical variables describing water quality with the aid of modern data analysis methods. One of these elements is the stable isotopic composition of precipitation, its spatiotemporal characteristics and their determination. Another element is shallow groundwater, which is highly important for drinking water supply. Besides the previous the spatiotemporal recalibration of water quality monitoring systems and solving other water quality related environmental issues based on water quality variables is also an important task for this field. Selected publications Kern, Z., Harmon, R.S., Fórizs, I. (2016) Stable isotope signatures of seasonal precipitation on the Pacific coast of central Panama. Isotopes in Environmental and Health Studies 52: 128-140. doi: 10.1080/10256016.2015.1016021 Kern, Z., Kohán, B., Leuenberger, M. (2014) Precipitation isoscape of high reliefs: interpolation scheme designed and tested for monthly resolved precipitation oxygen isotope records of an Alpine domain. Atmospheric Chemistry and Physics 14: 1897-1907. doi:10.5194/acp-14-1897-2014 Chapman DV, Bradley C, Gettel GM, Hatvani IG, Hein T, Kovács J, Liska I, Oliver DM, Tanos P, Trásy B, Várbíró G. (2016) Developments in water quality monitoring and management in large river catchments using the Danube River as an example. ENVIRONMENTAL SCIENCE & POLICY 64: pp. 141-154 Kovács J , Kovács S , Hatvani IG , Magyar N , Tanos P , Korponai J , Blaschke AP. (2015). Spatial Optimization of Monitoring Networks on the Examples of a River, a Lake-Wetland System and a Sub-Surface Water System. WATER RESOURCES MANAGEMENT 29:(14) pp. 5275-5294. Hatvani IG , Kovács J , Márkus L , Clement A , Hoffmann R , Korponai J (2015) Assessing the relationship of background factors governing the water quality of an agricultural watershed with changes in catchment property (W-Hungary). JOURNAL OF HYDROLOGY 521: pp. 460-469.