TY - CONF AU - Pryer, H AU - Hansson, M AU - Fischer, H AU - Rhodes, R AU - Burke, A AU - Rae, J AU - Újvári, Gábor AU - Turchyn, A AU - Mulvaney, R AU - Wolff, E TI - Sulfur isotope compositions of the NEEM ice core reveal glacial-interglacial and millennial-scale variability in the sources of sulfate aerosols T2 - EGU General Assembly 2024 : abstracts PB - European Geosciences Union (EGU) C1 - Wien PY - 2024 DO - 10.5194/egusphere-egu24-21625 UR - https://m2.mtmt.hu/api/publication/34752892 ID - 34752892 LA - English DB - MTMT ER - TY - CONF AU - Újvári, Gábor AU - Kele, Sándor AU - Rinyu, László AU - Payros, A AU - Pujalte, V AU - Schmitz, B AU - Bernasconi, S. M TI - Soil carbonate Δ47 paleotemperatures across the Paleocene-Eocene boundary: the Esplugafreda terrestrial record, Spain T2 - EGU General Assembly 2024 : abstracts PB - European Geosciences Union (EGU) C1 - Wien PY - 2024 DO - 10.5194/egusphere-egu24-10082 UR - https://m2.mtmt.hu/api/publication/34752869 ID - 34752869 LA - English DB - MTMT ER - TY - CONF AU - Lünsdorf, NK AU - Lünsdorf, JO AU - Újvári, Gábor AU - Dunkl, I AU - Wolfram, L AU - Hobrecht, A AU - Laake, L AU - von Eynatten, H TI - From outcrop to spectrum T2 - EGU General Assembly 2024 : abstracts PB - European Geosciences Union (EGU) C1 - Wien PY - 2024 DO - 10.5194/egusphere-egu24-17622 UR - https://m2.mtmt.hu/api/publication/34752860 ID - 34752860 LA - English DB - MTMT ER - TY - CONF AU - Czébely, Andrea AU - Túri, Marianna AU - Kiss, D AU - Újvári, Gábor AU - Kertész, Gréta Titanilla AU - Rinyu, László TI - Clumped isotope temperatures from secondary carbonates in loess: comparability of different preparation methods of snail shells and earthworm biospheroids T2 - EGU General Assembly 2024 : abstracts PB - European Geosciences Union (EGU) C1 - Wien PY - 2024 DO - 10.5194/egusphere-egu24-16279 UR - https://m2.mtmt.hu/api/publication/34752558 ID - 34752558 LA - English DB - MTMT ER - TY - JOUR AU - Stadelmaier, KH. AU - Ludwig, P AU - Pinto, JG. AU - Újvári, Gábor TI - Changes in Atmospheric Dynamics Over Dansgaard‐Oeschger Climate Oscillations Around 40 ka and Their Impact on Europe JF - JOURNAL OF GEOPHYSICAL RESEARCH: ATMOSPHERES J2 - J GEOPHYS RES ATMOS VL - 129 PY - 2024 IS - 3 SN - 2169-897X DO - 10.1029/2023JD040247 UR - https://m2.mtmt.hu/api/publication/34553378 ID - 34553378 AB - Dansgaard‐Oeschger (D‐O) climate variability during the last glaciation was first evidenced in ice cores and marine sediments, and is also recorded in various terrestrial paleoclimate archives in Europe. The relative synchronicity across Greenland, the North Atlantic and Europe implies a tight and fast coupling between those regions, most probably effectuated by an atmospheric transmission mechanism. In this study, we investigated the atmospheric changes during Greenland interstadial (GI) and stadial (GS) phases based on regional climate model simulations using two specific periods, GI‐10 and GS‐9 both around 40 ka, as boundary conditions. Our simulations accurately capture the changes in temperature and precipitation as reconstructed by the available proxy data. Moreover, the simulations depict an intensified and southward shifted eddy‐driven jet during the stadial period. Ultimately, this affects the near‐surface circulation toward more southwesterly and cyclonic flow in western Europe during the stadial period, explaining much of the seasonal climate variability recorded by the proxy data, including oxygen isotopes, at the considered proxy sites. LA - English DB - MTMT ER - TY - CONF AU - Czébely, A AU - Túri, M AU - Kiss, D AU - Újvári, Gábor AU - Rinyu, L ED - Bojar, AV ED - Tichy, G ED - Bojar, HP ED - Moser, B ED - Wojtowicz, A ED - Pelc, A ED - Neubauer, F TI - Clumped isotope temperatures obtained from snail shells and earthworm biospheriods from the Dunaszekcső loess record: comparability and the effect of sample preparation methods T2 - European Society for Isotope Research Meeting XVI (ESIR) PY - 2023 SP - 26 EP - 27 PG - 2 UR - https://m2.mtmt.hu/api/publication/34546131 ID - 34546131 LA - English DB - MTMT ER - TY - CONF AU - Lünsdorf, NK AU - Lünsdorf, JO AU - Újvári, Gábor AU - Wolfram, L AU - Hobrecht, A AU - Laake, L AU - von Eynatten, H TI - Collecting ‘Big’-data in sedimentary provenance analysis: An optimized workflow from sample preparation to analysis T2 - GeoBerlin 2023 Geosciences Beyond Boundaries - Research, Society, Future PY - 2023 UR - https://m2.mtmt.hu/api/publication/34546045 ID - 34546045 LA - English DB - MTMT ER - TY - JOUR AU - Lünsdorf, NK AU - Lünsdorf, JO AU - Újvári, Gábor AU - Dunkl, István AU - Wolfram, L AU - Hobrecht, A AU - Laake, L AU - von Eynatten, H TI - From Outcrop to Spectrum—An Automated Approach to Modal Mineralogy of Silt‐Sized Sediment Applied to Central European Loess JF - JOURNAL OF GEOPHYSICAL RESEARCH: EARTH SURFACE J2 - J GEOPHYS RES EARTH SUFR VL - 128 PY - 2023 IS - 12 SN - 2169-9003 DO - 10.1029/2023JF007364 UR - https://m2.mtmt.hu/api/publication/34431627 ID - 34431627 AB - Provenance information from recent and ancient sedimentary archives is obscured by several factors and for disentangling these intermingled signals, analysis by multiple methods is paramount. In sedimentary provenance analysis (SPA), single‐grain methods determining mineralogy, chemical composition, or radiometric ages are of key importance but are mostly applied to sand‐sized sediments or sedimentary rocks. Finer grained sediments or sedimentary rocks are usually analyzed by whole‐rock geochemical means and seldom by single‐grain methods. Considering the abundance of fine‐grained sedimentary archives, a strong need for single‐grain, multi‐method analyses of silt‐sized sediments is obvious. Thus, we propose a workflow that is optimized for sample throughput and correlative analysis of fine‐grained sediments based on machine learning methods. The feasibility of the workflow is demonstrated by differentiating three Central European loess‐paleosol‐sequences. The increased sample throughput enables access to sedimentary archives at high spatial and/or temporal resolution, which will open up new research pathways in SPA of silt‐sized sediments. LA - English DB - MTMT ER - TY - THES AU - Újvári, Gábor TI - Az utolsó glaciális időszak gyors klímaváltozásainak ásványi por ciklust érintő hatásai és visszacsatolásai az észak-atlanti térség és Közép-Európa vonatkozásában PY - 2023 SP - 51 UR - https://m2.mtmt.hu/api/publication/34398371 ID - 34398371 LA - Hungarian DB - MTMT ER - TY - CONF AU - Czébely, Andrea AU - Túri, Marianna AU - Kiss, D AU - Újvári, Gábor AU - Rinyu, László ED - Raucsikné Varga, Andrea Beáta TI - KAPCSOLT IZOTÓP TERMOMETRIA: MINTAELŐKÉSZÍTÉSI MÓDSZEREK ÉS MÉRÉSI EREDMÉNYEK ÖSSZEHASONLÍTHATÓSÁGA A DUNASZEKCSŐI LÖSZ-PALEOTALAJ SZELVÉNY CSIGAHÉJ- ÉS BIOSZFEROID-KARBONÁT VIZSGÁLATAI ALAPJÁN T2 - 13. Kőzettani és Geokémiai Vándorgyűlés PB - Szegedi Tudományegyetem TTIK, Ásványtani, Geokémiai és Kőzettani Tanszék CY - Szekszárd SN - 9789633069615 PY - 2023 SP - 3 EP - 4 PG - 2 UR - https://m2.mtmt.hu/api/publication/34161316 ID - 34161316 N1 - Poszter LA - Hungarian DB - MTMT ER -