About
115
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Introduction
Current institution
Additional affiliations
January 2016 - March 2019
January 2016 - present
Position
- Lecturer
Description
- Hyrogeology, Applied hydrogeophysics, Applied hydrogeology, Field work
September 2016 - January 2017
Education
September 2013 - June 2018
September 2011 - July 2013
September 2008 - July 2011
Publications
Publications (115)
Application of the gravity-driven regional groundwater flow (GDRGF) concept to the hydrogeologically complex thick carbonate system of the Transdanubian Range (TR), Hungary, is justified based on the principle of hydraulic continuity. The GDRGF concept informs about basin hydraulics and groundwater as a geologic agent. It became obvious that the ef...
Groundwater flow, driven, controlled and determined by topography, geology and climate, is responsible for several natural surface manifestations and affected by anthropogenic processes. Therefore, flowing groundwater can be regarded as an environmental agent. Numerical simulation of groundwater flow could reveal the flow pattern and explain the ob...
The theoretical examination of the combined effect of water table configuration and heat transfer is relevant to improve understanding of deep groundwater systems, not only in siliciclastic sedimentary basins, but also in fractured rocks or karstified carbonates. Numerical model calculations have been carried out to investigate the interaction of t...
Extensional domain type geothermal plays, as fertile targets for future resource development, consist of an orogen and an adjoining sedimentary basin of asymmetric physiographic and geologic setting. Preliminary geothermal potential, i.e. prospective geothermal regions, basin-scale flow patterns, heat transfer processes, temperature distribution an...
Climate change can directly influence groundwater systems through modification of recharge. Affecting not only groundwater levels and flow dynamics, climate change can also modify the fragmentation and hierarchy of groundwater flow systems. In this study, the influence of climate change - impacted recharge on groundwater levels and on inter-connect...
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 adjo...
Water table topography, temperature and solute content of groundwater all influence regional groundwater flow. Two-dimensional synthetic numerical calculations were performed to investigate the dynamic interaction between topography-driven forced convection and buoyancy-controlled free thermohaline convection. In the combined topothermohaline model...
Micro-credentials and sustainability are key strategic objectives for European educational innovation and development. To ensure that lifelong skills and competencies are taught by educators and reached by learners, pedagogical approaches to scaffold sustainability competency acquisition are necessary. Active learning pedagogies including challenge...
In response to the urgent need for innovative approaches to address complex global challenges, the Master's programme of Global Challenges for Sustainability offers a pioneering model for inter-and transdisciplinary education. This joint degree Master's programme is run by the European University Alliance CHARM-EU and taught simultaneously at 5 uni...
Study region: Lake Velence.
Study focus: Soda lakes are extreme habitats whose special hydrochemical characteristics can partly be explained by groundwater inflow. The relationship between groundwater and Lake Velence has never been properly investigated. A significant decrease in the lake's level in recent years urged an evaluation of the compone...
European University Alliances (EUAs) are a key initiative by the European Commission to increase the attractiveness and international competitiveness of European Higher Education Institutions (HEIs), via long-term structural, strategic and sustainable cooperation. Over 50 of these inter-institutional alliances have been established since 2019, and...
Within the context of global environmental change, co-productive approaches are increasingly recognised as necessary to prepare students for addressing real-world complex challenges (Frantzeskaki, 2018). Applying the co-productive approaches, the Global Challenges for Sustainability Master’s of CHARM-EU aims to train future skilful talent while ali...
In this proposal, we present an innovative initiative within the CHARM-EU alliance, specifically focusing on Phase 2 Water of the Global Challenges for Sustainability Master’s programme. Our initiative aims to foster transdisciplinary water education through the implementation of challenge-based learning. By integrating diverse disciplines, culture...
https://www.youtube.com/watch?v=wiGSSxTIUPQ&t=1s
Link of the EGU presentation
Managed aquifer recharge (MAR) is an increasingly popular technique; however, the significance of groundwater flow dynamics is rarely examined in detail regarding MAR systems. In general, a high hydraulic gradient is not favoured for MAR implementation, as it causes higher water loss and mixing of recharge water with native groundwater. However, du...
The hummocky Balaton Highland is located in western Hungary and is part of the Transdanubian Mountains, the most extensive carbonate aquifer system in Hungary. The study region also encompasses Lake Balaton, the biggest lake in central Europe, which is to the south of Balaton Highland. The surface water–groundwater interaction in the Balaton Highla...
In the present study, water samples from 8 sites known as: Taploca, Nagy-borvíz, Piricske (located in Romania) and Szent Jakab, Kiskút, Kossuth Lajos, Polányi kút and Berzsenyi (located in Balaton highland in Hungary) and characterized with low nutrient content, were studied using cultivation independent methods. Diversity indices and cell counts w...
Consideration of regional groundwater flow in aquifer systems allows for solving groundwater issues on a larger scale than single aquifers and contributes to all practical aspects of the UN’s Sustainable Development Goals for water. The approach has been extended to a wide range of hydrogeological environments. However, it suffers from poorly const...
Springs sensu stricto indicate the location at the land surface where groundwater leaves the lithosphere ending the underground course and discharges to the surface. Springs sensu lato are ecosystems fed by groundwater reaching the (near-)surface, therefore, these are considered groundwater-dependent ecosystems (GDEs). Springs provide naturally acc...
The motivation for this topic stemmed from practical questions posed to the Regional Groundwater Flow Commission (RGFC) of the IAH regarding assessing transboundary aquifer systems. These questions focused on sedimentary basins which were considered aquifer systems even though the information on hydrogeological units and groundwater flow in the bas...
The Hungarian 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 systems to carbonate regions and, thus, a novel approach in karst hydrogeology studies. Accordingly, a solid but comprehensive overview of th...
In the present study, water samples from 8 sites known as: Taploca, Nagy-borvíz, Piricske (located in Romania) and Szent Jakab, Kiskút, Kossuth Lajos, Polányi kút and Berzsenyi (located in Balaton highland in Hungary) and characterized with low nutrient content, were studied using cultivation independent methods. Diversity indices and cell counts w...
In the present study, water samples from 8 sites known as: Taploca, Nagy-borvíz, Piricske (located in Romania) and Szent Jakab, Kiskút, Kossuth Lajos, Polányi kút and Berzsenyi (located in Balaton highland in Hungary) and characterized with low nutrient content, were studied using cultivation independent methods. Diversity indices and cell counts w...
The undulation of topography and the groundwater table serves as a driving force of fluid flow not only in mountainous or volcanic regions but also in sedimentary basins. Since topographical variations existing everywhere in the continental lithosphere, the operation of regional-scale groundwater flow systems and their role in the formation of heat...
The green transition requires adapting the data and methods of the hydrocarbon industry for geothermal purposes and finding new resources in geofluids, like lithium. Moreover, the aligned research and exploration of groundwater, geothermal and hydrocarbon resources are also required for environmental reasons.
We could reveal in the last decades th...
Springs are sources of freshwater supply. Furthermore, they can also deliver valuable insight into the hydrogeologic processes of a mountainous region, a natural conservation area or a remote study site with no wells. In order to assess the appearance, peculiarities, quality, stability, longevity and resilience of springs and related ecosystems, th...
Managed Aquifer Recharge (MAR) interventions are usually designed for local water availability. However, regional hydrogeological conditions can be of major influence on the suitability and performance, depending on MAR type and size. Therefore, to facilitate site selection and suitable MAR scheme design and conditions, it is important to incorpora...
Salinization of groundwater has endangered e.g. drinking water supply, agricultural cultivation, groundwater-dependent ecosystems, geothermal energy supply, thermal and hydrocarbon well production to a rising degree. In order to investigate the problem of coupled topography- and salinity-driven groundwater flow on a basin-scale, a systematic simula...
Climate change, along with the rapid increase in population and mismanagement of water resources, resulted in a decline in the quality and quantity of groundwater worldwide. Balochistan, the largest and driest province of Pakistan, is located in the south western part of the country. This region is suffering from the declining water table, land sub...
The undulation of topography and the groundwater table serves as a driving force of fluid flow not only in mountainous or volcanic regions but also in sedimentary basins. Since topographical variations do exist at any part of the continental lithosphere, the existence of regional-scale groundwater flow systems and their role in the formation of hea...
Almost 100% of worldwide geothermal development is related to convection dominated geothermal plays, such as volcanic, plutonic, and extensional domain types. In these geothermal systems, heat transport mechanisms are strongly controlled by subsurface fluid flow, which transfers heat and modifies the temperature distribution. On the other hand, con...
Since groundwater flow is the dominant mechanism for transporting mass and energy in sedimentary basins, knowledge of the dynamics of flow is a fundamental prerequisite to understand geologic processes, formation and exploration of geological resources. Sedimentary basins are subjected to several forces known to cause large-scale fluid migration su...
In the last decades, geologists recognized that the solid framework of the crust evolves through interactions with geologic fluids. Geofluids play an essential role in all geologic processes, such as the mobilization, transportation, and accumulation of matter and heat. Driving forces of regional fluid flow, like topography, tectonic compression, c...
The Balaton Highland region (Central Hungary, Europe) is a popular tourist destination with an outstanding ecological value of the Lake Balaton and the surrounding wetlands. Naturally discharging springs have provided high-quality water as a drinking water resource, and CO2-enriched springwater is consumed by the locals for medical purposes, as wel...
Groundwater flow can be generated by several driving forces including gravity. While gravity is the most common force, overpressure due to tectonic compaction or compression, underpressure, or variable density can also have an important effect. In large sedimentary basins, numerous driving forces can often influence groundwater movement, resulting...
Regional groundwater flow (GWF) is driven mainly by the water table topography at least in the upper part of the continental basins. However, in deeper zones or in confined aquifers other driving forces can appear which influence or even dominate the flow system, such as the negative buoyancy force due to dissolved solid content and the positive bu...
Two-dimensional numerical simulations were carried out in order to elucidate the mechanism of the coupled fluid flow and heat transfer in synthetic and real groundwater flow (GWF) basins. Based on a theoretical concept, effects of geothermal gradient, regional relief, model depth and anisotropy of hydraulic conductivity were investigated on groundw...
Fluid, as an elemental component of a geothermal system, transports and distributes underground heat according to the topographic driving force within a groundwater basin. As the water table configuration has diverse and distinct forms in real-life basins, asymmetric hydraulic head variation may occur from basin to basin in accordance with real phy...
Study region
Buda Thermal Karst system, Hungary.
Study focus
The pilot area has high geothermal potential characterized by prominent thermal anomalies, such as thermal springs and spas which tap the Triassic carbonate aquifers. Therefore, numerical simulations were carried out to examine the temperature field and flow pattern considering three suc...
Groundwater is depleting across the globe. According to NASA, 33% of the world’s major basins are overexploited. This water shortage could be alleviated by using Managed aquifer recharge (MAR) techniques. MAR is defined by Gale, 2005 as “Intentional storage and treatment of water in aquifers”. The three most common methods of MAR are a) direct infi...
Sedimentary basins depending on their temperature conditions are targets for installation of geothermal power plants and for direct-use of thermal water. The necessary elements of a fluid–based geothermal systems are the reservoir with sufficient hydraulic parameters, the favourable quantity of heat and the production fluids which can transport hea...
Numerical model calculations were carried out in order to investigate the relevance of the interaction of water table configuration and heat transfer as driving forces of regional groundwater flow (Szijártó et al., 2019). Effect of the growing geothermal gradient, regional relief, model depth and anisotropy of hydraulic conductivity were examined o...
In the most sedimentary basins, like in the Pannonian Basin the groundwater flow is primarily driven by the altitude differences of the water table, especially in the upper approx. 1 km thick part of the crust. Beyond that, the flow is also influenced by other processes, e.g. buoyancy force due to heterogeneous temperature and/or solute concentrati...
Naturally discharging springs and water wells have been providing high-quality water as a local drinking water resource in the Bakony Mts.-Balaton Highland area (Central Hungary, Europe) for centuries. On the other hand, the Balaton Highland-Lake Balaton region is a popular tourist destination with an outstanding ecological value of the Lake Balato...
Based on field observations and previous numerical simulations, combined effect of external forces (e.g. water table elevation) and buoyancy forces can cause a complex groundwater flow pattern characterized by mixed thermal convection, not only in siliciclastic sedimentary basins, but also in adjoining karstified deep carbonates. The interaction of...
As conventional methods, spring hydroand physico-chemographs are widely applied. With the help of these graphs, the local dynamics and heterogeneity of the aquifer can be investigated on catchment and aquifer scale. In turn, springs are the natural discharge points of flow systems, they can reflect the subsurface flow and temperature conditions, an...
In South Transdanubia (Hungary) there are remarkable geothermal and hydrocarbon resources. Besides the sedimentary basin, the area also includes the Villány Thermal Karst. The karst area is characterized by natural thermal water discharge at the boundary of outcropping carbonate hills and the sedimentary basin, which established the thermal water e...
Travertines are continental carbonates that precipitate from spring waters, mainly due to CO2 degassing. They are widely quarried as building stone, which has led to numerous (often abandoned) travertine quarry outcrops. These and other outcrops, however, merely represent the surface expressions of the complex architecture of travertine bodies and...
Karst hydrogeology, hydraulic continuity, regional groundwater flow, basin hydraulics The hydrogeology of thick and deep carbonate regions is challenging not only theoretically but also from a practical point of view. Well-established basic concepts are needed to interpret basin-scale hydrogeology, including thick carbonate systems, in a coherent w...
The study firstly displays the results of a theoretical, basin-scale two-dimensional numerical investigation of buoyancy-driven free thermal convection and gravity-driven forced convection in order to understand deep groundwater flow patterns and the occasion of measured temperature anomalies. Several model scenarios were investigated within a wide...
Although hydrological observations over the past several decades have provided ample evidence that water resources can be strongly affected by climate change (Bates et al., 2008), our present understanding of how these predicted alterations impact subsurface water resources and flow systems, and our knowledge about the dynamic relationship between...
Two-dimensional numerical investigation has been accomplished in order to investigate how the solute concentration influences the topography-driven groundwater flow along a section from Buda Thermal Karst to Gödöll˝ o Hills in Hungary (Fodor 2011). First, an extensive numerical testing has been carried out to validate the applicability of the finit...
Naturally discharging springs have provided high-quality water as a local drinking water resource in the Bakony-Balaton Highland area (Central Hungary, Europe) for centuries. On the other hand, the Balaton Highland-Lake Balaton region is a popular tourist destination with an outstanding ecological value of the Lake Balaton and the surrounding wetla...
Interactions of basin-scale topography-driven groundwater flow and free thermal convection were examined by two-dimensional theoretical numerical model simulations for a homogeneous unit basin. The continuity equations for flow with temperature-dependent water density and thermal transport were solved to handle the problem. The simulations showed t...
Springs are the natural discharge points of flow systems, they can reflect the subsurface flow and temperature conditions, and therefore they can provide information about the groundwater flow pattern. Namely, the character of springs and their areal distribution can be indicative of gravity-driven groundwater flow systems via the physicochemical p...
The water balance study of the largest lacustrine ecosystem in Central Europe, the Lake Balaton, Hungary, is compiled and published yearly. This lake is very important regionally because it is a popular tourist destination with a huge cultural heritage and ecological value. The official reports count with the precipitation, runoff, evapotranspirati...
The different hydraulic behaviour and conceptual flow field of confined and unconfined carbonate regions applying the topography-driven regional groundwater flow theory were already outlined and presented for adjoining confined and unconfined cases (Mádl-Szönyi & Tóth 2015, Mádl-Szönyi et al. 2017). In this paper, the hydraulic position of the larg...
The hypogenic cave of Beremend is located in the Villány karst area (South Hungary). This cave is characterized by thermal water-related phenomena: tectonically controlled maze-like pattern, morphological features such as spherical niches, and typical minerals such as huntite, aragonite and typical forms of calcite such as cave popcorns (Takács-Bol...
Considerable part of Hungary's thermal water resources is hosted by carbonate rocks. Owing to the favourable geological and geothermal conditions many of these reservoirs are characterized by natural thermal water discharge, usually at the boundary of outcropping carbonates and adjacent sedimentary basins. The Villány thermal karst area is situated...
Hydrological observations over the past several decades have provided ample evidence that water resources can be strongly affected by climate change (Bates et al., 2008), however our present understanding of how these changes may impact subsurface water resources and flow systems, and our knowledge about the dynamic relationship between groundwater...
Considerable part of Hungary's thermal water resources is hosted by carbonate rocks. Owing to the favourable geological and geothermal conditions many of these reservoirs are characterized by natural thermal water discharge, usually at the boundary of outcropping carbonates and adjacent sedimentary basins. Since the current hydrogeological systems...
Based on earlier conceptions water table configuration was examined as the unique driving force of regional groundwater motion. Since that time it has been perceived, that density change by heat transfer can be a further driving force for groundwater flow, too. It was certified analytically the existence of thermal convection in a two-dimensional,...
The fluid evolution of the Buda Thermal Karst (BTK) has been ongoing since the Late Miocene. At that time the system was fully confined and only the thermal buoyancy influenced the flow of fluids in the system. Parallel with the uplift of the Buda Hills, the infiltration of fresh water into the system began; thus the subsequent evolution of the top...
Lakes as groundwater-dependent ecosystems (GDEs) are highly influenced by the available amount of groundwater, seasonal variation of precipitation and consequent water table fluctuation and also the anthropogenic activities. They can be regarded as natural surface manifestations of the flowing groundwater. The preservation of environment and biodiv...
The understanding of regional groundwater flow systems in the underground can give the base to
reveal connections between spatially far groundwater bodies and help in the understanding of
groundwater and lake water interaction. Therefore, system approach can give the base for water
management and mitigation of the effect of changing climate. The ca...
In large sedimentary basins groundwater is usually driven by numerous driving forces, resulting in complex groundwater flow systems. Beside the most frequent impelling force, the gravity, overpressure caused by compression and compaction, underpressure, as well as variable density can have an important effect. In large basins various effect can be...
Climate variability and change directly influence groundwater systems through changes in precipitation, evapotranspiration, and therefore recharge. Relative changes in either groundwater or surface water levels can modify the interaction between groundwater and surface water, which can directly affect wetlands and other groundwater-dependent ecosys...
Groundwater-dependent ecosystems (GDEs) are highly influenced by the available amount of groundwater, seasonal variation of precipitation and consequent water table fluctuation and also the anthropogenic activities. They can be regarded as natural surface manifestations of the flowing groundwater. The preservation of environment and biodiversity of...
Carbonate regions have great economic importance for water supply, oil and gas reservoirs, geothermal fluids and also Mississippi Valley-type ore deposits. Therefore, the understanding and consequences of flow pattern in carbonates require special interest. The hypogene and epigene karst areas of carbonate sequences were distinguished and associate...
This international symposium will examine the current state of the regional groundwater flow concept, discuss any recent theoretical advancement, and share experiences from applications spanning energy exploration to environmental management.
The goal of the study was the evaluation of regional pressure regimes for different regions of confined carbonates and understanding the influence of pressure conditions on geothermal exploration. The confined basement carbonate region with its adjacent unconfined part and siliciclastic confining strata were examined based on the application of the...
For economic geothermal production, natural reservoirs with suitable hydraulic parameters, and a favorable quantity of heat and production fluids are necessary. These parameters need to be investigated in the reconnaissance phase of fluid-based geothermal exploration. Generally, observation wells are used to identify the subsurface conditions and e...
Sedimentary basins usually have complex groundwater flow systems, which are driven by different forces. The most frequent driving force is gravity, but overpressure caused by compression and compaction, as well as variable density can also have important effects. In large basins, various effects are present concurrently. Numerical modelling is a pe...
Two-dimensional numerical model calculations have been carried out to investigate the distortion of basin-scale groundwater flow system driven by water table differences due to heterogeneous temperature distributions. A Tóthian homogeneous unit basin (1962) with constant slope of the water table was used for the simulations. Equations of the conser...
A slowly moving loess landslide along the River Danube in South Hungary was studied using electrical resistivity tomography (ERT). The aim of the research was to determine the fracture system of the study site. It seems to be the only possibility to get information about the landslide and its further evolution due to the homogeneous composition of...
This study examines the patterns of groundwater flow and salinity in a region of confined basement carbonate aquifer along with the region's unconfined adjacent part and siliciclastic confining strata. An understanding of regional-scale flow patterns in this setting may prompt a rethinking of the traditional view. According to that view confined ca...
The vulnerability of carbonate systems is basically determined by their confinement (Mádl-Sz˝ onyi and Füle 1998). Confined carbonate units are traditionally considered to be aquifer systems hydrodynamically independent of their siliciclastic cover and unconfined parts. This is due to the widely accepted view, that confining layers are generally im...
Groundwater-dependent ecosystems (GDEs) are highly influenced by the amount of groundwater, seasonal variation of precipitation and consequent water table fluctuation and also the anthropogenic activities. They can be regarded as natural surface manifestations of the flowing groundwater. The preservation of environment and biodiversity of these GDE...
The main focus of the study was to help in the application of the gravity-driven regional groundwater flow (GDRGF) concept for the evaluation of groundwater flow circulation in unconfined and confined sub-basins of carbonates. The concerns of the applicability of GDRGF could be released with focusing not on an individual aquifer but on a carbonate...
The main focus of the study was to help in the application of the gravity-driven regional groundwater flow (GDRGF) concept for the evaluation of groundwater flow circulation in unconfined and confined sub-basins of carbonates. The concerns of the applicability of GDRGF could be released with focusing not on an individual aquifer but on a carbonate...
Understanding of karst systems at basin scale has only been highlighted in a few theoretical studies. This paper intends to demonstrate the applicability of the gravity-driven regional groundwater flow (GDRGF) concept in karst systems. For this purpose, the hydrogeological conditions of a golf course, situated in the Balaton Highland, Hungary, were...
Characteristics of gravitational groundwater flow systems in carbonate regions were presented by Mádl-Szőnyi & Tóth (2015) based on theoretical considerations, identification and classification of groundwater flow-related field phenomena and numerical simulation. It was revealed that the changes of flow pattern in carbonate framework attributed to...
The operation of the subsurface part of the hydrologic cycle is hardly understood on basin scale due to the limitation in validated knowledge. Therefore the water balance approach is used with simplified numerical approaches during solving water related problems. The understanding of hierarchical nature of gravity-driven groundwater flow in near-su...
Groundwater flow systems are the subsurface elements of the hydrologic cycle, thus they have an important
effect on surface water bodies and surface water-groundwater interaction processes. Moreover, groundwater flow systems are not simple, different driving forces govern and form different regimes with different behaviour. Their effects on surface...
Reservoir, heat and fluid should be investigated for the study area during reconnaissance phase of a fluid-based geothermal exploration. Without proper borehole information the determination and evaluation of reservoir, especially heat and fluid are quite complicated. In turn, springs, which are natural discharge points of flow systems, can reflect...
Mechanically weak zones may arise e.g. due to rock realignment in the subsurface having an effect to the near surface-, or even to the surface sediments. If they are not directly seen from the surface a new method, the so-called pressure probe (Pre-P) method may be used to detect and characterise them. This method is presented on the example of the...
Sedimentary basins depending on their temperature conditions are targets for installation of geothermal power plants and for direct-use of thermal water. The hydrogeological aspects of geothermal energy utilization are in the focus of interest nowadays (Allen et al., 2014). However, our knowledge regarding geothermal resources in the context of bas...
