CCL

Összesen 28 találat.
#/oldal:
Részletezés:
Rendezés:

1.

001-es BibID:BIBFORM121496
035-os BibID:(Scopus)85187429993 (WoS)001182953800001
Első szerző:Ali, Mosaad Ali Hussein
Cím:Numerical Simulation of Geophysical Models to Detect Mining Tailings' Leachates within Tailing Storage Facilities / Mosaad Ali Hussein Ali, Farag M. Mewafy, Wei Qian, Ajibola Richard Faruwa, Ali Shebl, Saleh Dabaa, Hussein A. Saleem
Dátum:2024
ISSN:2073-4441
Megjegyzések:The effective detection and monitoring of mining tailings' leachates (MTLs) plays a pivotal role in environmental protection and remediation efforts. Electrical resistivity tomography (ERT) is a non-invasive technique widely employed for mapping subsurface contaminant plumes. However, the efficacy of ERT depends on selecting the optimal electrode array for each specific case. This study addresses this challenge by conducting a comprehensive review of published case studies utilizing ERT to characterize mining tailings. Through numerical simulations, we compare the imaging capabilities of commonly used electrode configurations, six ERT arrays, aiming to identify the optimal array for MTLs' detection and monitoring. In addition, field surveys employing ERT were conducted at the El Mochito mine tailings site to detect zones saturated with leachates within the tailing storage facilities (TSFs). The findings indicate that the "Wenner-Schlumberger" array exhibits superior data resolution for MTL detection. However, the choice of the optimal electrode array is contingent on factors such as survey location, geological considerations, research objectives, data processing time and cost, and logistical constraints. This study serves as a practical guide for selecting the most effective electrode array in the context of pollutant penetration from mining tailings, employing the ERT technique. Furthermore, it contributes valuable insights into characterizing zones saturated with mining tailing leachates within the TSFs, providing a solid foundation for informed environmental management and remediation strategies.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
groundwater contamination
mining tailings
numerical simulation
resistivity
Megjelenés:Water. - 16 : 5 (2024), p. 1-18. -
További szerzők:Mewafy, Farag M. Qian, Wei Faruwa, Ajibola Richard Shebl, Ali (1992-) (geológus) Dabaa, Saleh Saleem, Hussein A.
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

2.

001-es BibID:BIBFORM103812
035-os BibID:(WoS)000863634200001 (Scopus)85141708017
Első szerző:Bahmanpouri, Farhad
Cím:Estimating the average river cross section velocity by observing only one surface velocity value and calibrating the entropic parameter / Farhad Bahmanpouri, Anette Eltner, Silvia Barbetta, László Bertalan, Tommaso Moramarco
Dátum:2022
ISSN:0043-1397
Megjegyzések:The current research aims to predict the velocity distribution and discharge rates in rivers based on the entropy concept using only one surface velocity measurement. In this direction, first, UAV-based image acquisition technique was applied to collect the surface velocity distribution along two European rivers, the Sajó and the Freiberger Mulde Rivers. Seven cross-sections were chosen for the analysis. At each cross-section, first, the entropic parameter phí(M) was calibrated based on the maximum and mean velocity magnitudes, derived from Acoustic Doppler Current Profilers (ADCP), respectively, showing a trend for all cross-sections with a range of 0.6 < phí(M) < 0.75. Next, the maximum surface velocity provided by the UAV was implemented as a single velocity input. Finally, the bathymetry data, herein collected by UAV, were considered as the input for the entropy approach. In this way, the entropy iterative method allowed estimating the mean flow velocity by identifying the location (dip) of maximum velocities across the river site and inferring the 2D velocity distribution. The results highlighted that the entropy approach can accurately predict the velocity distribution and discharge rates with a percentage error lower than 13%.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
UAV
entropy method
velocity estimation
discharge estimation
river monitoring
Megjelenés:Water Resources Research. - 58 : 10 (2022), p. 1-15. -
További szerzők:Eltner, Anette Barbetta, Silvia Bertalan László (1989-) (geográfus) Moramarco, Tommaso
Pályázati támogatás:DAAD-TKA : 307670
Egyéb
TKP2020-NKA-04
Egyéb
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

3.

001-es BibID:BIBFORM131858
035-os BibID:(Scopus)105014319808 (WoS)001558667300001
Első szerző:Balla Dániel Zoltán (geográfus)
Cím:Integrated Assessment of Groundwater Quality Using Water Quality Indices, Geospatial Analysis, and Neural Networks in a Rural Hungarian Settlement / Dániel Balla, Levente Tari, András Hajdu, Emőke Kiss, Marianna Zichar, Tamás Mester
Dátum:2025
ISSN:2073-4441
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Water. - 17 : 16 (2025), p. 1-24. -
További szerzők:Tari Levente Hajdu András (1973-) (matematikus, informatikus) Kiss Emőke (1993-) (geográfus) Bodroginé Zichar Marianna (1971-) (informatikus, matematikus) Mester Tamás (1991-) (geográfus, földrajz-német tanár)
Pályázati támogatás:DETKA
Egyéb
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

4.

001-es BibID:BIBFORM101688
035-os BibID:(Scopus)85129803463 (WoS)000794464100001
Első szerző:Barkat, Ayoub (1995-)
Cím:Assessment of Spatial Distribution and Temporal Variations of the Phreatic Groundwater Level Using Geostatistical Modelling: The Case of Oued Souf Valley-Southern East of Algeria / Ayoub Barkat, Foued Bouaicha, Tamás Mester, Mahmoud Debabeche, György Szabó
Dátum:2022
ISSN:2073-4441
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Water. - 14 (2022), p. 1-25. -
További szerzők:Bouaicha, Foued Mester Tamás (1991-) (geográfus, földrajz-német tanár) Debabeche, Mahmoud Szabó György (1964-) (geográfus, egyetemi tanár)
Pályázati támogatás:TKP2021-NKTA-32
Egyéb
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

5.

001-es BibID:BIBFORM094832
035-os BibID:(Scopus)85108460141 (WoS)000660825400001
Első szerző:Barkat, Ayoub (1995-)
Cím:Assessment of Complex Terminal Groundwater Aquifer for Different Use of Oued Souf Valley (Algeria) Using Multivariate Statistical Methods, Geostatistical Modelling and Water Quality Index / Ayoub Barkat, Foued Bouaicha, Oualid Bouteraa, Tamás Mester, Behnam Ata, Daniel Balla, Zakaria Rahal, György Szabó
Dátum:2021
ISSN:2073-4441
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Water. - 13 : 11 (2021), p. 1-26. -
További szerzők:Bouaicha, Foued Bouteraa, Oualid Mester Tamás (1991-) (geográfus, földrajz-német tanár) Ata, Behnam (1991-) (Geográfus PhD hallgató) Balla Dániel Zoltán (1988-) (geográfus) Rahal, Zakaria Szabó György (1964-) (geográfus, egyetemi tanár)
Pályázati támogatás:TKP2020-IKA-04
Egyéb
Internet cím:Intézményi repozitóriumban (DEA) tárolt változat
DOI
Szerző által megadott URL
Borító:

6.

001-es BibID:BIBFORM075898
035-os BibID:(Wos)000451736300120 (Scopus)85056238502
Első szerző:Bertalan László (geográfus)
Cím:Issues of Meander Development: Land Degradation or Ecological Value? The Example of the Sajó River, Hungary / Bertalan László, Novák Tibor József, Németh Zoltán, Rodrigo-Comino Jesús, Kertész Ádám, Szabó Szilárd
Dátum:2018
ISSN:2073-4441
Megjegyzések:The extensive destruction of arable lands by the process of lateral bank erosion is a major issue for the alluvial meandering type of rivers all around the world. Nowadays, land managers, stakeholders, and scientists are discussing how this process affects the surrounding landscapes. Usually, due to a land mismanagement of agroforestry activities or urbanization plans, river regulations are designed to reduce anthropogenic impacts such as bank erosion, but many of these regulations resulted in a degradation of habitat diversity. Regardless, there is a lack of information about the possible positive effects of meandering from the ecological point of view. Therefore, the main aim of this study was to investigate a 2.12 km long meandering sub-reach of Sajó River, Hungary, in order to evaluate whether the process of meander development can be evaluated as a land degradation processes or whether it can enhance ecological conservation and sustainability. To achieve this goal, an archive of aerial imagery and UAV (Unmanned Aerial Vehicle)-surveys was used to provide a consistent database for a landscape metrics-based analysis to reveal changes in landscape ecological dynamics. Moreover, an ornithological survey was also carried out to assess the composition and diversity of the avifauna. The forest cover was developed in a remarkable pattern, finding a linear relationship between its rate and channel sinuosity. An increase in forest areas did not enhance the rate of landscape diversity since only its distribution became more compact. Eroding riverbanks provided important nesting sites for colonies of protected and regionally declining migratory bird species such as the sand martin. We revealed that almost 70 years were enough to gain a new habitat system along the river as the linear channel formed to a meandering and more natural state.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
bank erosion
landscape metrics
diversity
uav
Sajó
Megjelenés:Water. - 10 : 11 (2018), p. 1-21. -
További szerzők:Novák Tibor (1973-) (geográfus) Németh Zoltán (1976-) (biológus) Rodrigo-Comino, Jesús Kertész Ádám (1948-) Szabó Szilárd (1974-) (geográfus)
Pályázati támogatás:EFOP-3.6.1-16-2016-00022
EFOP
NKFIH 108755
Egyéb
ÚNKP-17-3
Egyéb
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

7.

001-es BibID:BIBFORM106749
035-os BibID:(Scopus)85146798477 (WoS)000918916500001
Első szerző:Chakilu, Gashaw Gismu
Cím:The Dynamics of Hydrological Extremes under the Highest Emission Climate Change Scenario in the Headwater Catchments of the Upper Blue Nile Basin, Ethiopia / Gashaw Gismu Chakilu, Szegedi Sándor, Túri Zoltán
Dátum:2023
ISSN:2073-4441
Megjegyzések:Climate change and its impact on surface runoff in the upper Blue Nile basin and sub-basins have been widely studied in future climate projections. However, the impact on extreme flow events of rivers is barely investigated discretely. In this paper, the change in temperature and rainfall under the Representative Concentration Pathway (RCP) highest emission scenario (RCP 8.5) and its impact on the high flow and low flow simulated by the Soil and Water Assessment Tool (SWAT 2012) in major watersheds of the Lake Tana Basin has been evaluated by comparing the baseline period (1971-2000) with the 2020s (2011-2040), 2050s (2041-2070), and 2080s (2071-2100). The high flows of watersheds were selected by the Annual Maximum Series (AMS) model, whereas the low-flow watersheds were selected by the 7-day sustained mean annual minimum flow method. The result showed that the highest change in maximum temperature ranged from 2.93 ?C to 5.17 ?C in monthly time scales in the 2080s. The increment in minimum temperature is also more prominent in the 2080s and it is expected to rise by 4.75 ?C. Inter-annual variability of the change in rainfall has shown increasing and decreasing patterns. The highest increments are expected by 22.37%, 25.58%, and 29.75% in the 2020s, 2050s, and 2080s, respectively, whereas the projected highest decrease in rainfall dictates the decrease of 6.42%, 7.11%, and 9.26% in 2020s, 2050s, and 2080s, respectively. Due to changes in temperature and rainfall, the low flow is likely to decrease by 8.39%, 8.33%, 6.21%, and 5.02% in Ribb, Gumara, Megech, and Gilgel Abay watersheds, respectively, whereas the high flow of Gilgel Abay, Megech, Gumara, and Ribb watersheds are expected to increase by 13.94%, 12.16%, 10.90%, and 10.24%, respectively, every 30 years.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
climate change
high flow
low flow
SWAT
upper Blue Nile basin
Megjelenés:Water. - 15 : 2 (2023), p. 1-20. -
További szerzők:Szegedi Sándor (1970-) (klimatológus) Túri Zoltán (1980-) (geográfus)
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

8.

001-es BibID:BIBFORM088959
035-os BibID:(WoS)000594907900001 (Scopus)85095970567
Első szerző:Chakilu, Gashaw Gismu
Cím:Change in Stream Flow of Gumara Watershed, upper Blue Nile Basin, Ethiopia under Representative Concentration Pathway Climate Change Scenarios / Gashaw Gismu Chakilu, Szegedi Sándor, Túri Zoltán
Dátum:2020
ISSN:2073-4441
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
Megjelenés:Water. - 12 : 11 (2020), p. 1-14. -
További szerzők:Szegedi Sándor (1970-) (klimatológus) Túri Zoltán (1980-) (geográfus)
Pályázati támogatás:EFOP-3.6.1-16-2016-00022
EFOP
Stipendium Hungaricum Ösztöndíj Program
Egyéb
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

9.

001-es BibID:BIBFORM116174
035-os BibID:(Scopus)85168805701 (WoS)001057309000001
Első szerző:Flores, Yetzabbel Gerarda
Cím:Integration of Geological, Geochemical Modelling and Hydrodynamic Condition for Understanding the Geometry and Flow Pattern of the Aquifer System, Southern Nyírség-Hajdúság, Hungary / Yetzabbel G. Flores, Mohamed Hamdy Eid, Péter Szűcs, Teodora Szőcs, Támas Fancsik, János Szanyi, Balázs Kovács, Gábor Markos, Péter Újlaki, Péter Tóth, Richard W. McIntosh, Zoltán Püspöki
Dátum:2023
ISSN:2073-4441
Megjegyzések:Geological heterogeneity impacts groundwater flow patterns, necessitating a detailed hydrogeological framework for conceptualization process of aquifer systems. This research developed a new conceptual model of detailed geologic geometry by integrating 133 well-logs, 366 hydrodynamic data and 118 water samples. As new results, systematic 3D log correlation detected four distinct hydrostratigraphic units in the Southern Nyirseg-Hajdusag Groundwater Body (East Hungary). The primary aquifer was identified as an incised valley 10-13 km wide and a NE-SW strike. Logan's approach estimated the average hydraulic conductivity of the Incised Valley Unit (IVU) at 11 m/d, higher than the other three aquifers (3.2 m/d to 4.6 m/d). The average specific capacity of wells screening the IVU is 315.6 m(3)/d/m, in contrast with the remaining aquifers ranging from 31.6 m(3)/d/m to 92 m(3)/d/m. Pressure-depth profiles, dynamic pressure increment and hydraulic head maps revealed recharge-discharge zones and hydraulic windows between hydrostratigraphic units. The elongated pattern on the hydraulic head map at the depth of the IVU showed the existence of a preferential path along its axis within the mapped borders of the IVU. Hydrochemical analysis revealed Ca-Mg-HCO3 water type within the primary aquifer and Na-HCO3 water type in the laterally connected aquifer. The saturation index values indicated a transition from undersaturated to supersaturated state inside the main aquifer for calcite and dolomite minerals. The correlation matrix and PCA results demonstrated that the carbonate weathering process is the main factor controlling the groundwater chemistry. This integrated approach holds significance for future applications of the regional conceptual model in water management planning, sustainable aquifer development and contaminant transport modelling. It provides essential contributions to informed decision-making and the formulation of effective strategies, ensuring the long-term availability and utilization of groundwater resources.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
conceptual model
geologic geometry
groundwater modeling
incised valley aquifer
Megjelenés:Water. - 15 : 16 (2023), p. 1-26. -
További szerzők:Eid, Mohamed Hamdy Szűcs Péter Szőcs Teodóra Fancsik Tamás Szanyi János Kovács Balázs Markos Gábor Újlaki Péter Tóth Péter McIntosh, Richard William (1978-) (geológus) Püspöki Zoltán (1972-) (geológus)
Pályázati támogatás:FFTNP FTA
Egyéb
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

10.

001-es BibID:BIBFORM118244
035-os BibID:(Scopus)85183327095
Első szerző:Hamma, Bellal
Cím:Hydrochemical assessment of groundwater using multivariate statistical methods and water quality indices (WQIs) / Bellal Hamma, Abdullah Alodah, Foued Bouaicha, Mohamed Faouzi Bekkouche, Ayoub Barkat, Enas E. Hussein
Dátum:2024
ISSN:2190-5487 2190-5495
Megjegyzések:Groundwater quality assessment is crucial for the sustainable management of water resources in arid regions, where groundwater is the primary source of water supply and increasing demand raises concerns. The study area in Southwest Algeria relies heavily on groundwater as a source of water supply, and the increasing demand for freshwater raises concerns about the quality of groundwater. To assess the hydrochemical characteristics and water quality of groundwater in the Ain Sefra region, multivariate statistical methods, geochemical modeling and water quality indices were employed. The study revealed that the groundwater samples could be classified into four water groups using hierarchical cluster analysis Q mode (HCA), namely Ca-Mg-HCO3, Ca-Mg-Cl-SO4, Ca-SO4 and Na-Cl. Factor analysis was used to identify the main factors controlling the study area's hydrochemical processes. The results indicated that water-rock interaction, reverse ion exchange and anthropogenic pollution were the main hydrochemical processes affecting groundwater chemistry. The water quality index indicated that the groundwater was suitable for human consumption, with only 2.32% of the samples being unsuitable. Additionally, the groundwater was suitable for agricultural use, but salinity control was necessary. The saturation index values showed that the groundwater was supersaturated with aragonite, calcite, dolomite, anhydrite and gypsum, and undersaturated with halite. Ca-smectite, Mg-smectite and kaolinite were identified as the primary processes controlling the chemical composition of groundwater. The application of multivariate statistical methods, geochemical modeling and water quality indices provided a comprehensive understanding of the hydrochemical characteristics and water quality of groundwater in the Ain Sefra region. The findings of the study can serve as a useful basis for future studies on groundwater quality assessment in the region.
Tárgyszavak:Természettudományok Földtudományok esettanulmány
folyóiratcikk
Groundwater quality
Hydrochemical characteristics
Multivariate statistical methods
Water quality indices
Geochemical modeling
Contamination
Megjelenés:Applied Water Science. - 14 : 2 (2024), p. 1-18. -
További szerzők:Alodah, Abdullah Bouaicha, Foued Bekkouche, Mohamed Faouzi Barkat, Ayoub (1995-) Hussein, Enas E.
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

11.

001-es BibID:BIBFORM136734
Első szerző:Kazem, Mahmoud Mustafa (geológus, Phd hallgató)
Cím:Uncertainty-Aware Groundwater Potential Mapping in Arid Basement Terrain Using AHP and Dirichlet-Based Monte Carlo Simulation: Evidence from the Sudanese Nubian Shield / Mahmoud M. Kazem, Fadlelsaid A. Mohammed, Abazar M. A. Daoud, Tamás Buday
Dátum:2026
ISSN:2073-4441
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
groundwater potential mapping
Analytical Hierarchy Process (AHP)
Monte Carlo simulation
uncertainty analysis
GIS
remote sensing
crystalline basement aquifers
arid regions
Megjelenés:Water. - 18 : 8 (2026), p. 1-31. -
További szerzők:Mohammed, Fadlelsaid A. Daoud, Abazar Mohamed Ahmed (1991-) (földtudományi kutató, geológus, geográfus) Buday Tamás (1982-) (geográfus)
Internet cím:Szerző által megadott URL
DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:

12.

001-es BibID:BIBFORM110571
035-os BibID:(WoS)000983100300001 (Scopus)85156269713
Első szerző:Mester Tamás (geográfus, földrajz-német tanár)
Cím:Hydrochemical Assessment of the Kisköre Reservoir (Lake Tisza) and the Impacts of Water Quality on Tourism Development / Tamás Mester, Borbála Benkhard, Mária Vasvári, Péter Csorba, Emőke Kiss, Dániel Balla, István Fazekas, Eduárd Csépes, Ayoub Barkat, György Szabó
Dátum:2023
ISSN:2073-4441
Megjegyzések:Outdoor recreation has grown rapidly in recent years, with an increasing preference for areas in good ecological condition. Since lakes represent some of the most important wetlands, providing a wide variety of ecosystem services, they have become a very popular destination. The present study aimed to assess the water quality of the largest artificial lake in Hungary (Kiskore Reservoir-Lake Tisza), and the role of ecological status in tourism development. Monthly water sampling from the basins of the lake (Tiszavalk, Poroszlo, Sarud and Abadszalok basins) took place from April-November 2021 and in 2022. The majority of samples from the river section and from the lake are classified as Ca2+-HCO3- type or mixed Ca2+-Na+-HCO3- type. According to the results, the water quality of each basin is considered excellent or good. Rapid warming of the shallow water of the basins was detected during the summer months, resulting in different hydrochemical characteristics (pH, NH4-N, NO2-N, NO3-N, PO4-P, CODcr BOI5) compared to the river section. Differences in the plant nutrient and oxygen balance component groups have been revealed with hierarchical and two-step cluster analysis as well. The results demonstrated that the hydrochemical properties of the lake's water are substantially influenced by the filling of the lake in spring from the River Tisza and the significant lowering (1.2 m) of the water level in the autumn each year, allowing the drainage of stagnant water, the removal of accumulated sediments and the oxidation of organic matter. The number of tourists on Lake Tisza has increased rapidly over the last decade, confirming that a wide range of ecosystem services have a significant attractive impact on waterfront activities and ecotourism.
Tárgyszavak:Természettudományok Földtudományok idegen nyelvű folyóiratközlemény külföldi lapban
folyóiratcikk
water quality
artificial lake
surface water reservoir
monitoring
tourism
ecosystem services
Megjelenés:Water. - 15 : 8 (2023), p. 1-17. -
További szerzők:Benkhard Borbála (1977-) Vasvári Mária (1984-) (geográfus, turizmus) Csorba Péter (1953-) (geográfus) Kiss Emőke (1993-) (geográfus) Balla Dániel Zoltán (1988-) (geográfus) Fazekas István (1973-) (geográfus) Csépes Eduárd (1973-) Barkat, Ayoub (1995-) Szabó György (1964-) (geográfus, egyetemi tanár)
Pályázati támogatás:TKP2021-NKTA-32
Egyéb
Internet cím:DOI
Intézményi repozitóriumban (DEA) tárolt változat
Borító:
Rekordok letöltése1 2 3 
Corvina könyvtári katalógus v10.11.18-SNAPSHOT © 2024 Monguz kft. Minden jog fenntartva.