TY - JOUR AU - Czauner, Brigitta AU - Molnár, Ferenc AU - Masetti, Marco AU - Arola, Teppo AU - Mádlné Szőnyi, Judit TI - Groundwater Flow System-Based Dynamic System Approach for Geofluids and Their Resources JF - WATER J2 - WATER-SUI VL - 14 PY - 2022 IS - 7 SN - 2073-4441 DO - 10.3390/w14071015 UR - https://m2.mtmt.hu/api/publication/32783211 ID - 32783211 N1 - Funding Agency and Grant Number: European Union [810980] Funding text: The study was funded by the ENeRAG project which received funding from the European Union's Horizon 2020 research and innovation program under Grant Agreement No. 810980. LA - English DB - MTMT ER - TY - THES AU - Hegedűs-Csondor, Katalin TI - A Villányi-termálkarszt hidrogeológiai vizsgálata. Regionális felszínalatti áramlási rendszerek és barlangi szubmikronos folyamatok összefüggései TS - Regionális felszínalatti áramlási rendszerek és barlangi szubmikronos folyamatok összefüggései PB - Eötvös Loránd Tudományegyetem (ELTE) PY - 2022 SP - 168 DO - 10.15476/ELTE.2021.104 UR - https://m2.mtmt.hu/api/publication/32712938 ID - 32712938 LA - Hungarian DB - MTMT ER - TY - JOUR AU - Koroncz, Péter János AU - Vizhányó, Zsanett AU - Farkas, Márton Pál AU - Kuncz, Máté AU - Ács, Péter AU - Kocsis, Gábor AU - Mucsi, Péter AU - Fedorné Szász, Anita AU - Fedor, Ferenc AU - Kovács, János TI - Experimental Rock Characterisation of Upper Pannonian Sandstones from Szentes Geothermal Field, Hungary JF - ENERGIES J2 - ENERGIES VL - 15 PY - 2022 IS - 23 PG - 22 SN - 1996-1073 DO - 10.3390/en15239136 UR - https://m2.mtmt.hu/api/publication/33296781 ID - 33296781 AB - The Upper Pannonian (UP) sandstone formation has been utilised for thermal water production in Hungary for several decades. Although sustainable utilisation requires the reinjection of cooled geothermal brine into the host rock, only a fraction of the used water is reinjected in the country. UP sandstone formation is reported to exhibit low injectivity, making reinjection challenging, and its petrophysical properties are poorly known, which increases uncertainty in designing operational parameters. The goal of the study is to provide experimental data and to gain a better understanding of formation characteristics that control injectivity and productivity issues in Upper Pannonian sandstone layers. Petrographical characterisation and petrophysical laboratory experiments are conducted on cores retrieved from two wells drilled in the framework of an R&D project at the depth of between 1750 m and 2000 m. The experiments, such as grain density, porosity, permeability, and ultrasonic velocity, as well as thin section, grain size distribution, XRD, and SEM analyses, are used to determine Petrophysical Rock Types (PRT) that share distinct hydraulic (flow zone indicator, FZI) and petrophysical characteristics. These are used to identify well intervals with lower potential for injectivity issues. The results imply that fines migration due to formation erosion is one of the key processes that must be better understood and controlled in order to mitigate injectivity issues at the study area. Future investigation should include numerical and experimental characterisation of formation damage, including water–rock interaction tests, critical flow velocity measurements, and fines migration analysis under reservoir conditions. LA - English DB - MTMT ER - TY - CHAP AU - Mádlné Szőnyi, Judit AU - Erőss, Anita AU - Hegedűs-Csondor, Katalin AU - Iván, Veronika AU - Tóth, Ádám ED - Veress, Márton ED - Leél-Őssy, Szabolcs TI - Hydrogeology of the Karst Regions in Hungary T2 - Cave and karst systems of Hungary PB - Springer Netherlands CY - Cham SN - 9783030929602 PY - 2022 SP - 137 EP - 160 PG - 24 DO - 10.1007/978-3-030-92960-2_6 UR - https://m2.mtmt.hu/api/publication/33037352 ID - 33037352 AB - The Hungarian karstHungarian karst regions with diverse geologic settings and hydrogeologic characteristics are presented and discussed in a basin-scale groundwater flow framework which is the adaptation of groundwater flow systemsGroundwater flow systems to carbonate regions and, thus, a novel approach in karst hydrogeologyHydrogeology studies. Accordingly, a solid but comprehensive overview of the hydrogeologic environmentHydrogeologic environment (topography, climate, and geology), groundwater flow patterns and processes (flow systems and directions, hydrochemistry and temperatureTemperature conditions), groundwater-related phenomena (springs and caves), and groundwater resources (direct and indirect use) is provided for the Aggtelek KarstAggtelek Karst, Bükk MtsBükk Mountains., SW and NE Transdanubian Mts.,NE Transdanubian Mountains Mecsek MtsMecsek Mountains., and VillányVillány Mts. By the application of this concept, the asymmetric flow patternsAsymmetric flow pattern, distribution of cold, lukewarm and thermal springsThermal spring, heat accumulation and heat transportHeat transport processes, mixing of meteoric and basinal and waters of local, intermediate and regional groundwater flow systemsGroundwater flow systems and potential locations of epigene and hypogene speleogenesisSpeleogenesis can be revealed and explained. The Hungarian karstHungarian karst areas reflect different properties but there are similarities regarding their hydrogeologic environmentHydrogeologic environment and flow systems, as well. Therefore, the local-scale karst features and peculiarities fit into a bigger, i.e., basin-scale, picture which can provide a sound base for regional hydrogeologic characterization of karstic carbonate areas. LA - English DB - MTMT ER - TY - JOUR AU - Trásy-Havril, Tímea AU - Simon, Szilvia AU - Mádlné Szőnyi, Judit TI - How Complex Groundwater Flow Systems Respond to Climate Change Induced Recharge Reduction? JF - WATER J2 - WATER-SUI VL - 14 PY - 2022 IS - 19 SN - 2073-4441 DO - 10.3390/w14193026 UR - https://m2.mtmt.hu/api/publication/33120558 ID - 33120558 N1 - Export Date: 18 November 2022 Correspondence Address: Trásy-Havril, T.; József and Erzsébet Tóth Endowed Hydrogeology Chair, Hungary; email: timea.havril@ttk.elte.hu AB - Our recent knowledge about the role of different fluid driving forces in the response of groundwater flow systems to climate change is still limited. This current study aimed to evaluate possible spatial and temporal changes in complex, gravity- and overpressure-driven groundwater flow systems induced by climate change and look for general trends and characteristics of the flow field using 2D transient groundwater flow simulations. Results showed significant large-scale changes in the transient subsurface flow field and flow dynamics due to recharge reduction. Local gravity-driven flow systems are the most vulnerable to atmospheric processes, while overpressured regimes are expected to be independent of direct climatic variability. By the involvement of different degrees of overpressure, it was revealed that, as the degree of overpressure increases, the penetration depth of the topography-driven local flow systems decreases. The higher the overpressure, the lower the climate change-induced groundwater level decrease over time, suggesting the buffering effect of overpressure as a fluid driving force in the flow systems’ response to the changes in hydrologic parameters. The main novelty of the study is the involvement of different fluid driving forces in the evaluation with the combination of a regional scale investigation, which is unique in the context of climate change effects on groundwater systems. LA - English DB - MTMT ER - TY - JOUR AU - Erőss, Anita AU - Horváth, Ákos AU - Hegedűs-Csondor, Katalin AU - Baják, Petra AU - Kovácsné Bodor, Petra AU - Mádlné Szőnyi, Judit TI - Radon a felszínalatti vizekben JF - SUGÁRVÉDELEM J2 - SUGÁRVÉDELEM VL - 14 PY - 2021 IS - 2 SP - 37 EP - 42 PG - 6 SN - 2060-2391 UR - https://m2.mtmt.hu/api/publication/32517440 ID - 32517440 N1 - https://elftsv.hu/svonline/ LA - Hungarian DB - MTMT ER - TY - JOUR AU - Markó, Ábel AU - Mádlné Szőnyi, Judit AU - Brehme, Maren TI - Injection related issues of a doublet system in a sandstone aquifer - A generalized concept to understand and avoid problem sources in geothermal systems JF - GEOTHERMICS J2 - GEOTHERMICS VL - 97 PY - 2021 SN - 0375-6505 DO - 10.1016/j.geothermics.2021.102234 UR - https://m2.mtmt.hu/api/publication/32179701 ID - 32179701 N1 - Cited By :1 Export Date: 14 February 2022 CODEN: GTMCA Correspondence Address: Markó, Á.; Eötvös Loránd University, Pázmány P. stny. 1/c, Hungary; email: markoabel.ma@gmail.com LA - English DB - MTMT ER - TY - JOUR AU - Czauner, Brigitta AU - Mádlné Szőnyi, Judit TI - Szemelvények az elmúlt két évtized ELTE-n végzett, medenceléptékű hidrogeológiai kutatásaiból JF - FÖLDTANI KÖZLÖNY J2 - FÖLDTANI KÖZLÖNY VL - 150 PY - 2020 IS - 4 SP - 545 EP - 570 PG - 26 SN - 0015-542X DO - 10.23928/foldt.kozl.2020.150.4.545 UR - https://m2.mtmt.hu/api/publication/31801414 ID - 31801414 N1 - Export Date: 25 January 2022 LA - Hungarian DB - MTMT ER -