@techreport{MTMT:36317067, title = {Felszínalatti víztől függő élőhelyek lehetséges helyreállítása a hidrológiai ciklus felszín alatti részét érintően a klímaalkalmazkodási lehetőségekre tekintettel}, url = {https://m2.mtmt.hu/api/publication/36317067}, author = {Simon, Szilvia and Boros, Emil and Czauner, Brigitta and Mádlné Szőnyi, Judit}, unique-id = {36317067}, year = {2025}, orcid-numbers = {Simon, Szilvia/0000-0002-3811-9141; Czauner, Brigitta/0000-0001-6591-8611; Mádlné Szőnyi, Judit/0000-0002-5628-4386} } @article{MTMT:36464337, title = {Groundwater Flow Systems as Key Determinants of Groundwater‐Dependent Vegetation Distribution}, url = {https://m2.mtmt.hu/api/publication/36464337}, author = {Simon, Szilvia and Czauner, Brigitta and Balogh, Viktor and Mádlné Szőnyi, Judit and Biró, Marianna}, doi = {10.1002/eco.70147}, journal-iso = {ECOHYDROLOGY}, journal = {ECOHYDROLOGY}, volume = {18}, unique-id = {36464337}, issn = {1936-0584}, abstract = {Direct investigations of the connection between groundwater flow systems across multiple scales and groundwater‐dependent ecosystems (GDEs) remain rare. Such studies offer valuable insights into the complex and scale‐dependent relationships between groundwater dynamics and vegetation patterns. Our research in the Danube‐Tisza Interfluve (DTI)—an area where the preservation of natural vegetation is of critical importance—demonstrates the effectiveness of this approach in revealing the hydraulic drivers behind the distribution of GDEs. In the area, the spatial distribution of groundwater‐dependent vegetation is primarily governed by the characteristics of subsurface groundwater flow systems. Our results reveal that the chemical differences between the two dominant basin‐scale flow domains—overpressure‐related saline ascending system and topography‐driven freshwater system—are responsible for the regional distribution of habitats with alkaline and fen characteristics. Local alkaline vegetation anomalies in the fen vegetation zone are predominantly associated with the discharge zones of intermediate and local flow systems of the topography‐driven freshwater domain. Their anomalous chemical character is developed by local rock–water interactions along the local flow paths and/or by the sporadic ascent of deep saline groundwater via faults. At a small scale, the alignment between the differing chemical compositions of groundwater (saline and freshwater) and the spatial distribution of alkaline and fen vegetation could also be identified. Small‐scale investigations demonstrated that deep ascending saline groundwater associated with alkaline habitats continues to maintain them; meanwhile, habitats formed by topography‐driven flow systems are transforming, possibly because of the decreasing water supply. With this study, we highlight the critical importance of multiscale groundwater flow systems in understanding and protecting transforming GDEs—an issue that is particularly relevant in the era of climate change.}, year = {2025}, eissn = {1936-0592}, orcid-numbers = {Simon, Szilvia/0000-0002-3811-9141; Czauner, Brigitta/0000-0001-6591-8611; Mádlné Szőnyi, Judit/0000-0002-5628-4386} } @article{MTMT:36189883, title = {Numerical investigation of groundwater aging and thermal processes in confined-unconfined basins with asymmetric flow patterns: The Buda Thermal Karst, Hungary}, url = {https://m2.mtmt.hu/api/publication/36189883}, author = {Szijártó, Márk and Galsa, Attila and Czauner, Brigitta and Erőss, Anita and Tóth, Ádám and Mádlné Szőnyi, Judit}, doi = {10.1007/s10040-025-02908-0}, journal-iso = {HYDROGEOL J}, journal = {HYDROGEOLOGY JOURNAL}, volume = {33}, unique-id = {36189883}, issn = {1431-2174}, abstract = {Groundwater temperature and age are crucial proxy data that play a fundamental role in understanding regional-scale groundwater flow systems and managing drinking and geothermal water resources. To investigate groundwater flow as well as heat and age mass transport processes in a complex hydrogeological system with deep carbonate sequences and adjoining sedimentary basins (DCSBs), numerical simulations were carried out in two-dimensional synthetic and two- and three-dimensional field-based conceptual environments. The simulations carried out for the Buda Thermal Karst (BTK), Hungary, revealed that the increasing asymmetry in the water table and the appearance of DCSB-type heterogeneity could affect the transition from advection-dominated to conduction- and diffusion-controlled transport processes in the models. However, simultaneously, both effects significantly influence the intensity of groundwater flow. Thermal buoyancy was superimposed on the water table-controlled forced convection (mixed convection), causing significant age mass accumulations in the closed convection cells. To quantify and track the changes in physical processes in the DCSB-type system, the simultaneous use of monitoring parameters calculated in the different parts of the model domain (e.g., unconfined vs confined), contours of groundwater age and temperature, and histograms of normalized groundwater age are presented. The numerical results from the preliminary three-dimensional model were compared to the 14 C observation data in the BTK. The groundwater age calculated in the model was of the same order of magnitude as the results of 14 C dating from samples taken at different depths in the unconfined and confined parts, and from the deeper mixing zone of the BTK.}, year = {2025}, eissn = {1435-0157}, pages = {1047-1065}, orcid-numbers = {Szijártó, Márk/0000-0001-5408-4092; Galsa, Attila/0000-0002-7198-4524; Czauner, Brigitta/0000-0001-6591-8611; Erőss, Anita/0000-0002-2395-3934; Tóth, Ádám/0000-0002-7300-6687; Mádlné Szőnyi, Judit/0000-0002-5628-4386} } @CONFERENCE{MTMT:36114388, title = {Nature-Based Managed Aquifer Recharge solutions for mitigating water shortage at Danube-Tisza Interfluve, Hungary}, url = {https://m2.mtmt.hu/api/publication/36114388}, author = {Simon, Szilvia and Czauner, Brigitta and Szijártó, Márk and Erhardt, Ildikó and Gyuris, Ferenc and Hoffman, István and Ádám, Györfi and Ignacio, Cazcarro and Jessica, Lillquist and Mádlné Szőnyi, Judit}, booktitle = {EGU General Assembly 2025}, doi = {10.5194/egusphere-egu25-19516}, unique-id = {36114388}, year = {2025}, orcid-numbers = {Simon, Szilvia/0000-0002-3811-9141; Czauner, Brigitta/0000-0001-6591-8611; Szijártó, Márk/0000-0001-5408-4092; Gyuris, Ferenc/0000-0002-3373-8453; Hoffman, István/0000-0002-6394-1516; Mádlné Szőnyi, Judit/0000-0002-5628-4386} } @article{MTMT:34874660, title = {How to consider groundwater flow systems in the Earth's Critical Zone? – Demonstration in the Central Pannonian Basin, Hungary}, url = {https://m2.mtmt.hu/api/publication/34874660}, author = {Czauner, Brigitta and Simon, Szilvia and Mádlné Szőnyi, Judit}, doi = {10.1016/j.ejrh.2024.101833}, journal-iso = {J HYDROL-REG STUD}, journal = {JOURNAL OF HYDROLOGY: REGIONAL STUDIES}, volume = {53}, unique-id = {34874660}, abstract = {Study region Central Pannonian Basin, Hungary. Study focus Critical Zone (CZ) Science generally focuses on the soil and weathered bedrock in a few or tens of meters depth, thus influence of deeper groundwater on the CZ is understudied. Here we aim to introduce a hydrogeological methodology that can separate normal and abnormal pressure regimes and determine the groundwater flow pattern to characterize the connection of different groundwater flow systems to the CZ. Basin-scale evaluation of about 5500 measured hydraulic data were carried out by p(z) and h(z) profiles, tomographic maps and hydraulic cross sections. New hydrological insights for the Region Three flow domains were separated and characterized. Namely, i) the uppermost topography-driven flow systems, which penetrate only a few hundred meters, ii) a deep overpressured regime below 1600–2100 m depth, which drives fluids upward; and iii) a newly identified transition zone between the former two, which gains its energy from overpressure dissipation and contains non-renewable water resources. Topography-driven flow systems and discharge areas of the transition zone, where its upwelling saline water contributes to surface salinization, are parts of the CZ. Discharge areas of the transition zone cover about 50% of the Great Hungarian Plain. The overpressured system can only influence the CZ through the transition zone. The approach and methodology can be used in any terrestrial sedimentary basin where a deep overpressured regime exists.}, keywords = {climate change; Critical Zone; Overpressure; groundwater flow systems; Topography-driven; Surface salinization}, year = {2024}, eissn = {2214-5818}, orcid-numbers = {Czauner, Brigitta/0000-0001-6591-8611; Simon, Szilvia/0000-0002-3811-9141; Mádlné Szőnyi, Judit/0000-0002-5628-4386} } @article{MTMT:35320518, title = {Groundwater Flow Controlled Migration of Dissolved Microbial Gas in the Eastern Hungarian Pannonian Basin}, url = {https://m2.mtmt.hu/api/publication/35320518}, author = {Czauner, Brigitta and Adonya, Romario Albert and Márton, Béla}, doi = {10.1144/SP555-2023-186}, journal-iso = {GEOL SOC SPEC PUBL}, journal = {GEOLOGICAL SOCIETY SPECIAL PUBLICATIONS}, volume = {555}, unique-id = {35320518}, issn = {0305-8719}, abstract = {Formation of commercial microbial gas accumulations requires specific migration and accumulation conditions which can be effectively provided by groundwater flow systems. Namely, if microbial methane can be gathered and transported in aqueous solution over large lateral distances, great amount of free gas can be exsolved where flows turn upward causing a decrease in solubility. Based on this concept and the flow pattern of regional scale topography-driven groundwater flow systems, the present study built a simplistic 2D model in MS Excel including a methane solubility database with 32000 data. The model can calculate the required flow pathway length to saturate groundwater with methane, the amount of free gas that can be released in a potential accumulation zone, and the necessary time interval for the whole process. Application of the model was demonstrated based on the geological and hydrogeological conditions of a study area in the Central Pannonian Basin (Hungary) focusing on the Hajdúszoboszló gas field. In light of the upscaled results of the 2D model, the known microbial gas accumulations of the study area could be charged according to the model. In addition, parameter sensitivity analysis also provided valuable insights into the complex mechanisms of microbial gas migration.}, year = {2024}, eissn = {2041-4927}, orcid-numbers = {Czauner, Brigitta/0000-0001-6591-8611} } @article{MTMT:35473091, title = {Re-interpreting renewable and non-renewable water resources in the over-pressured Pannonian Basin}, url = {https://m2.mtmt.hu/api/publication/35473091}, author = {Czauner, Brigitta and Szijártó, Márk and Sztanó, Orsolya and Ben Mahrez, Hana and Molson, John and Oláh, Soma and Mádlné Szőnyi, Judit}, doi = {10.1038/s41598-024-76076-8}, journal-iso = {SCI REP}, journal = {SCIENTIFIC REPORTS}, volume = {14}, unique-id = {35473091}, year = {2024}, eissn = {2045-2322}, orcid-numbers = {Czauner, Brigitta/0000-0001-6591-8611; Szijártó, Márk/0000-0001-5408-4092; Sztanó, Orsolya/0000-0003-0786-3653; Mádlné Szőnyi, Judit/0000-0002-5628-4386} } @CONFERENCE{MTMT:35076255, title = {Flow, transport and karstification model of the Buda Thermal Karst, Hungary - theoretical and practical consequences}, url = {https://m2.mtmt.hu/api/publication/35076255}, author = {Mádlné Szőnyi, Judit and Czauner, Brigitta and Erőss, Anita and Szijártó, Márk and Tóth, Ádám and Trásy-Havril, Tímea and Galsa, Attila and Kovácsné Bodor, Petra}, booktitle = {Eurokarst Abstract book}, unique-id = {35076255}, year = {2024}, pages = {1}, orcid-numbers = {Mádlné Szőnyi, Judit/0000-0002-5628-4386; Czauner, Brigitta/0000-0001-6591-8611; Erőss, Anita/0000-0002-2395-3934; Szijártó, Márk/0000-0001-5408-4092; Tóth, Ádám/0000-0002-7300-6687; Trásy-Havril, Tímea/0000-0003-3478-2787; Galsa, Attila/0000-0002-7198-4524} } @misc{MTMT:35533037, title = {Climate change adaptation through groundwater flow understanding - How do we find nature-based MAR solutions?}, url = {https://m2.mtmt.hu/api/publication/35533037}, author = {Mádlné Szőnyi, Judit and Czauner, Brigitta and Trásy-Havril, Tímea and Szabó, Zsóka and Tóth, Ádám and Szijártó, Márk and Oláh, Soma and Simon, Szilvia}, unique-id = {35533037}, year = {2024}, orcid-numbers = {Mádlné Szőnyi, Judit/0000-0002-5628-4386; Czauner, Brigitta/0000-0001-6591-8611; Trásy-Havril, Tímea/0000-0003-3478-2787; Tóth, Ádám/0000-0002-7300-6687; Szijártó, Márk/0000-0001-5408-4092; Simon, Szilvia/0000-0002-3811-9141} } @misc{MTMT:35605568, title = {Súlyosbodó aszály, csökkenő vízszintek, kényszerű alkalmazkodás - avagy lehet-e újat mondani a hidrogeológus szemszögéből?}, url = {https://m2.mtmt.hu/api/publication/35605568}, author = {Mádlné Szőnyi, Judit and Czauner, Brigitta and Szabó, Zsóka and Simon, Szilvia and Szijártó, Márk and Oláh, Soma and Trásy-Havril, Tímea and Vincze, Miklós}, unique-id = {35605568}, year = {2024}, orcid-numbers = {Mádlné Szőnyi, Judit/0000-0002-5628-4386; Czauner, Brigitta/0000-0001-6591-8611; Simon, Szilvia/0000-0002-3811-9141; Szijártó, Márk/0000-0001-5408-4092; Trásy-Havril, Tímea/0000-0003-3478-2787; Vincze, Miklós/0000-0003-3220-7535} }