TY - JOUR AU - Bódai, Barbara AU - Baráth, Balázs Áron AU - Gergely, Virág AU - Sóvágó, Dávid AU - Braun, Mihály AU - Futó, István AU - Kele, Sándor AU - Molnár, Mihály TI - Carbon Isotope Investigation of Freshwater Tufa Precipitation in Karst Streams of Bükk Mountains (Hungary) JF - JOURNAL OF ENVIRONMENTAL GEOGRAPHY J2 - J ENVIRON GEOGR VL - 16 PY - 2023 IS - 1-4 SP - 55 EP - 71 PG - 17 SN - 2060-3274 DO - 10.14232/jengeo-2023-44749 UR - https://m2.mtmt.hu/api/publication/34075905 ID - 34075905 AB - Recent freshwater tufa precipitation and its parent water were investigated at Szalajka valley, Sebesvíz and Dobrica Spring (Bükk Mts., Hungary). The aim of the study is to analyse the carbon isotope dynamics of freshwater tufa precipitated in karstic streams between the spring water and the first significant tufa barrage using field measurements, water chemistry, and carbon isotope analysis. A further aim was to examine the fossil tufa precipitations in recently active areas and their neighbourhood to determine their age using the 14C method. Based on the 3H content the water samples are relatively young (<10 y). To calibrate the calendar age of older tufas, dead carbon proportion (dcp) were determined in the recently formed freshwater tufas. The lowest dcp of the recent freshwater tufas was estimated at Sebesvíz (9.6±1.3%), the highest at Szalajka (16.4±2.4%) and a moderate value at Dobrica Spring (13.8±2.2%). Due to the rapid decrease in atmospheric 14C level we have to compensate the atmospheric 14C drop between the water infiltration time and the deposition time of fresh carbonates to compensate the bomb-effect. The oldest fossil tufa age (BC 6421-6096) was found at Sebesvíz located around 20 metres away from the riverbed, while the youngest fossil tufa ages (a few years/decades old) were found in the recently active area at all sites. LA - English DB - MTMT ER - TY - JOUR AU - Major, István AU - Molnár, Mihály AU - Futó, István AU - Gergely, Virág AU - Bán, Sándor AU - Machon, Attila AU - Salma, Imre AU - Varga, Tamás TI - Detailed Carbon Isotope Study of PM2.5 Aerosols at Urban Background, Suburban Background and Regional Background Sites in Hungary JF - ATMOSPHERE J2 - ATMOSPHERE-BASEL VL - 13 PY - 2022 IS - 5 SN - 2073-4433 DO - 10.3390/atmos13050716 UR - https://m2.mtmt.hu/api/publication/32801653 ID - 32801653 N1 - INTERACT Centre, Institute for Nuclear Research, P.O. Box 51, Debrecen, H-4001, Hungary Air Quality Reference Center, Hungarian Meteorological Service, Budapest, H-1181, Hungary Institute of Chemistry, Eötvös Lóránd University, P.O. Box 32, Budapest, H-1518, Hungary Doctoral School of Physics, University of Debrecen, Debrecen, H-4032, Hungary Export Date: 1 June 2022 Correspondence Address: Major, I.; INTERACT Centre, P.O. Box 51, Hungary; email: major.istvan@atomki.hu Correspondence Address: Varga, T.; INTERACT Centre, P.O. Box 51, Hungary; email: varga.tamas@atomki.hu LA - English DB - MTMT ER - TY - GEN AU - Molnár, Mihály AU - Janovics, Róbert AU - Gergely, Virág AU - Sóvágó, Dávid AU - Baráth, Balázs Áron AU - Gergely, Orsovszki AU - Veres, Mihály AU - Molnár, Anita TI - Application of an automated AGE-CHS unit for water DIC-14 analyses at HEKAL Laboratory CY - 15-19 November 2021 Sydney Ausztrália PY - 2021 UR - https://m2.mtmt.hu/api/publication/34062103 ID - 34062103 LA - English DB - MTMT ER - TY - JOUR AU - Varga, Tamás AU - Major, István AU - Gergely, Virág AU - Lencsés, A AU - Bujtás, T AU - Jull, Timothy AJ AU - Veres, Mihály AU - Molnár, Mihály TI - Radiocarbon in the atmospheric gases and PM10 aerosol around the Paks Nuclear Power Plant, Hungary JF - JOURNAL OF ENVIRONMENTAL RADIOACTIVITY J2 - J ENVIRON RADIOACTIV VL - 237 PY - 2021 SN - 0265-931X DO - 10.1016/j.jenvrad.2021.106670 UR - https://m2.mtmt.hu/api/publication/32073541 ID - 32073541 N1 - International Radiocarbon AMS Competence and Training (INTERACT) Center, Institute for Nuclear Research, Debrecen, H-4026, Hungary Doctoral School of Physics, University of Debrecen, Debrecen, H-4026, Hungary Isotoptech Ltd, Debrecen, H-4026, Hungary Department of Environmental Engineering, Faculty of Engineering, University of DebrecenH-4028, Hungary Paks Nuclear Power Plant, Paks, H-7031, Hungary Department of Geosciences, University of Arizona, Tucson, AZ 85721, United States University of Arizona AMS Laboratory, Tucson, AZ 85721, United States Export Date: 30 June 2021 CODEN: JERAE Correspondence Address: Varga, T.; International Radiocarbon AMS Competence and Training (INTERACT) Center, Hungary; email: varga.tamas@atomki.hu LA - English DB - MTMT ER - TY - JOUR AU - Molnár, Mihály AU - Mészáros, Marianna AU - Janovics, Róbert AU - Major, István AU - Hubay, Katalin AU - Buró, Botond AU - Varga, Tamás AU - Kertész, Gréta Titanilla AU - Gergely, Virág AU - Vas, Ádám AU - Orsovszki, Gergely AU - Molnár, Anita AU - Veres, Mihály AU - Seiler, Martin AU - Wacker, Lukas AU - Jull, Timothy AJ TI - GAS ION SOURCE PERFORMANCE OF THE ENVIRONMICADAS AT HEKAL 4 LABORATORY, DEBRECEN, HUNGARY JF - RADIOCARBON J2 - RADIOCARBON VL - 63 PY - 2021 IS - 2 SP - 499 EP - 511 PG - 13 SN - 0033-8222 DO - 10.1017/RDC.2020.109 UR - https://m2.mtmt.hu/api/publication/31891333 ID - 31891333 N1 - Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Bem tér 18/C, Debrecen, H-4026, Hungary Isotoptech Zrt., Debrecen, H-4026, Hungary National Laboratory for Age Determination, Ntnu, Trondheim, NO-7491, Norway Laboratory for Ion Beam Physics, Eth Zürich, Zürich, CH-8093, Switzerland University of Arizona Ams Laboratory, University of Arizona, Tucson, AZ 85721, United States University of Debrecen, Debrecen, H-4001, Hungary University of Arizona, Department of Geosciences, Tucson, AZ 85721, United States Export Date: 4 January 2023 CODEN: RACAA Correspondence Address: Molnár, M.; Isotope Climatology and Environmental Research Centre, Bem tér 18/C, Hungary; email: molnar.mihaly@atomki.mta.hu LA - English DB - MTMT ER - TY - CONF AU - Molnár, Mihály AU - Janovics, Róbert AU - Major, István AU - Hubay, Katalin AU - Buró, Botond AU - Varga, Tamás AU - Kertész, Gréta Titanilla AU - Gergely, Virág AU - Veres, Mihály AU - Jull, Timothy AJ ED - Montanari, A ED - Buiter, S TI - EnvironMICADAS C-14 AMS Gas ion source performance and its applications at HEKAL Laboratory, Debrecen, Hungary T2 - EGU General Assembly 2020: Abstracts PY - 2020 UR - https://m2.mtmt.hu/api/publication/31996326 ID - 31996326 LA - English DB - MTMT ER - TY - JOUR AU - Salma, Imre AU - Vasanits, Anikó AU - Machon, Attila AU - Varga, Tamás AU - Major, István AU - Gergely, Virág AU - Molnár, Mihály TI - Fossil fuel combustion, biomass burning and biogenic sources of fine carbonaceous aerosol in the Carpathian Basin JF - ATMOSPHERIC CHEMISTRY AND PHYSICS J2 - ATMOS CHEM PHYS VL - 20 PY - 2020 IS - 7 SP - 4295 EP - 4312 PG - 18 SN - 1680-7316 DO - 10.5194/acp-20-4295-2020 UR - https://m2.mtmt.hu/api/publication/31180130 ID - 31180130 N1 - Institute of Chemistry, Eötvös University, Budapest, Hungary Air Quality Reference Center, Hungarian Meteorological Service, Budapest, Hungary Isotope Climatology and Environmental Research Centre, Institute for Nuclear Research, Debrecen, Hungary Export Date: 28 May 2021 Correspondence Address: Salma, I.; Institute of Chemistry, Hungary; email: salma@chem.elte.hu LA - English DB - MTMT ER -