Journal articles: 'Balason catchment'

1

Eck-Varanka, Bettina, Nóra Kováts, Árpád Benkő-Kiss, Eszter Horváth, Árpád Ferincz, and Gábor Paulovits. "A najádok (Bivalvia: Unionidae) elterjedésének vizsgálata a Balaton-vízgyűjtő déli oldalán." Kaposvári Rippl-Rónai Múzeum Közleményei, no. 3 (2014): 81–86. http://dx.doi.org/10.26080/krrmkozl.2014.3.81.

Full text

Abstract:

The unionid mussel fauna of the complex system of waterflows, situated on the southern part of the Balaton-catchment was studied. Altogether thirty-seven sampling points on nine watercourses were sampled in order to de-scribe the mussel assemblages of these waters and to as-sess the actual distribution and abundance of chinese pond mussel (Sinanodonta woodiana) populations. Mussels were found in 46% of the localities, in six out of the nine sampled watercourses. Five native and one non-indigenous unionid mussel species were identified during the sampling campaign. The non-indigenous chinese pond mussel was the most fre-quent species, occurred in 13 sampling sites and its relative abundance was 15.5% in the whole sample. our study also revealed that fishponds are potential sources of the invasive S. woodiana in the Balaton-catchment.

APA, Harvard, Vancouver, ISO, and other styles

2

Németh, T., J. Szabó, L. Pásztor, and Zs Bakacsi. "Elaboration of a complex GIS application in a catchment area." Water Science and Technology 45, no. 9 (May 1, 2002): 133–40. http://dx.doi.org/10.2166/wst.2002.0223.

Full text

Abstract:

Rearrangement of land resources after political changes has not yet been finished in Hungary. It is almost impossible to collect information necessary for planning activities on outer areas of settlements. The data are distributed among various organizations and can be found in diverse forms or there are no available data at all. However water quality protection has become legally ordered concerning municipal activities around Lake Balaton which is considered as the most important recreation area and tourist target in Hungary and is also affected by a number of factors providing sources of environmental conflicts. Settlements in a catchment area (Tetves Creek) on the southern shoreline of Lake Balaton in Central Hungary tendered a complex project for collecting sources of authentic data of the Hungarian rural areas along with systematizing and saving these data in a uniform GIS. An application using Autodesk MapGuide Program for Internet realization was developed. The implemented web-based system can be used in Internet and Intranet environments.

APA, Harvard, Vancouver, ISO, and other styles

3

Sümegi, Pál, Tünde Törőcsik, Gusztáv Jakab, Sándor Gulyás, Péter Pomázi, Péter Majkut, Dávid Gergely Páll, Gergő Persaits, and Emese Bodor. "The environmental history of Fenékpuszta with a special attention to the climate and precipitation of the last 2000 years." Journal of Environmental Geography 2, no. 3-4 (June 1, 2009): 5–14. http://dx.doi.org/10.14232/jengeo-2009-43869.

Full text

Abstract:

This work presents the details of a multidisciplinary palaeoecological and geoarcheological study on the sedimentary sequences, including 2 undisturbed cores of the Little Balaton situated in the western part of Lake Balaton in Central Europe. The application of Quaternary palaeoecological analysis to peat and lacustrine deposits enables to identify long-term environmental changes in aquatic and terrestrial ecosystems. The principal aims were to shed light onto how former human societies and culture shaped and altered their natural environment on the one hand. Furthermore, to reconstruct the once existing environmental conditions within the framework of the natural evolution of the vegetation, soil, fauna and the catchment basin for the times preceding written historical records via the application of sedimentological, geochemical, isotope geochemical, palynological, macrobotanical, malacological and microfaunal analytical methods and approaches.

APA, Harvard, Vancouver, ISO, and other styles

4

Kertész, Ádám, Loránd Attila Nagy, and Boglárka Balázs. "Effect of land use change on ecosystem services in Lake Balaton Catchment." Land Use Policy 80 (January 2019): 430–38. http://dx.doi.org/10.1016/j.landusepol.2018.04.005.

Full text

APA, Harvard, Vancouver, ISO, and other styles

5

Szabó, Brigitta, Gábor Szatmári, Katalin Takács, Annamária Laborczi, András Makó, Kálmán Rajkai, and László Pásztor. "Mapping soil hydraulic properties using random-forest-based pedotransfer functions and geostatistics." Hydrology and Earth System Sciences 23, no. 6 (June 18, 2019): 2615–35. http://dx.doi.org/10.5194/hess-23-2615-2019.

Full text

Abstract:

Abstract. Spatial 3-D information on soil hydraulic properties for areas larger than plot scale is usually derived using indirect methods such as pedotransfer functions (PTFs) due to the lack of measured information on them. PTFs describe the relationship between the desired soil hydraulic parameter and easily available soil properties based on a soil hydraulic reference dataset. Soil hydraulic properties of a catchment or region can be calculated by applying PTFs on available soil maps. Our aim was to analyse the performance of (i) indirect (using PTFs) and (ii) direct (geostatistical) mapping methods to derive 3-D soil hydraulic properties. The study was performed on the Balaton catchment area in Hungary, where density of measured soil hydraulic data fulfils the requirements of geostatistical methods. Maps of saturated water content (0 cm matric potential), field capacity (−330 cm matric potential) and wilting point (−15 000 cm matric potential) for 0–30, 30–60 and 60–90 cm soil depth were prepared. PTFs were derived using the random forest method on the whole Hungarian soil hydraulic dataset, which includes soil chemical, physical, taxonomical and hydraulic properties of some 12 000 samples complemented with information on topography, climate, parent material, vegetation and land use. As a direct and thus geostatistical method, random forest combined with kriging (RFK) was applied to 359 soil profiles located in the Balaton catchment area. There were no significant differences between the direct and indirect methods in six out of nine maps having root-mean-square-error values between 0.052 and 0.074 cm3 cm−3, which is in accordance with the internationally accepted performance of hydraulic PTFs. The PTF-based mapping method performed significantly better than the RFK for the saturated water content at 30–60 and 60–90 cm soil depth; in the case of wilting point the RFK outperformed the PTFs at 60–90 cm depth. Differences between the PTF-based and RFK mapped values are less than 0.025 cm3 cm−3 for 65 %–86 % of the catchment. In RFK, the uncertainty of input environmental covariate layers is less influential on the mapped values, which is preferable. In the PTF-based method the uncertainty of mapping soil hydraulic properties is less computationally intensive. Detailed comparisons of maps derived from the PTF-based method and the RFK are presented in this paper.

APA, Harvard, Vancouver, ISO, and other styles

6

Honti, Mark, Chunni Gao, Vera Istvánovics, and Adrienne Clement. "Lessons Learnt from the Long-Term Management of a Large (Re)constructed Wetland, the Kis-Balaton Protection System (Hungary)." Water 12, no. 3 (February 29, 2020): 659. http://dx.doi.org/10.3390/w12030659.

Full text

Abstract:

Environmental management decisions should be made based on solid scientific evidence that relies on monitoring and modeling. In practice, changing economic, societal, and political boundary conditions often interfere with management during large, long, and complex projects. The result may be a sub-optimal development path that may finally diverge from the original intentions and be economically or technically ineffective. Nevertheless, unforeseen benefits may be created in the end. The Kis-Balaton wetland system is a typical illustration of such a case. Despite tremendous investments and huge efforts put in monitoring and modeling, the sequence of decisions during implementation can hardly be considered optimal. We use a catchment model and a basic water quality model to coherently review the impacts of management decisions during the 30-year history. Due to the complexity of the system, science mostly excelled in finding explanations for observed changes after the event instead of predicting the impacts of management measures a priori. In parallel, the political setting and sectoral authorities experienced rearrangements during system implementation. Despite being expensive as a water quality management investment originally targeting nutrient removal, the Kis-Balaton wetland system created a huge ecological asset, and thereby became worth the price.

APA, Harvard, Vancouver, ISO, and other styles

7

Prikler, Bence, Réka Svigruha, Judit Háhn, Péter Harkai, István Fodor, Edit Kaszab, Balázs Kriszt, et al. "Spatial Variations in Microplastics in the Largest Shallow Lake of Central Europe and Its Protecting Wetland Area." Water 16, no. 7 (March 31, 2024): 1014. http://dx.doi.org/10.3390/w16071014.

Full text

Abstract:

The concentration of microplastics (MPs) in two important Hungarian freshwater habitats was determined in the size range of 50 μm–1 mm. Lake Balaton (LB) is the largest shallow lake in Central Europe, with a significant role in recreation and tourism. Its main inflow, the Zala River, enters the lake through an artificially constructed wetland, the Kis-Balaton Water Protection System and its catchment area (KB), which helps preserve the water quality of the lake. From these two areas, 15 samples were taken with an in situ filtration sampling method. After preparation, the samples were analyzed automatically by FT-IR microscopy. All samples, from both areas, contained MPs; the dominant microplastic (MP) shape was the fragment, while the most frequently polymer types were polyethylene, polypropylene and alkyd. Small MPs were dominant in both areas; around 90% of the MPs were smaller than 500 μm. On average, LB contained more MPs (21.0 ± 12.5 MPs/m3) compared to the KB, which presented an average concentration of MPs of 7.8 ± 5.9 MPs/m3. In the examined areas, two potential MP sources were determined, i.e., treated wastewater and road traffic. The importance of tourism should also be further investigated.

APA, Harvard, Vancouver, ISO, and other styles

8

MÓRA, ARNOLD, ILDIKÓ SZIVÁK, CSABA DEÁK, RÉKA BODA, ZOLTÁN CSABAI, PÉTER SÁLY, PÉTER TAKÁCS, TIBOR ERŐS, and PÉTER BÍRÓ. "Environmental factors influencing the distribution of EPT assemblages in streams of Lake Balaton’s catchment area, Hungary." Zoosymposia 5, no. 1 (June 10, 2011): 360–71. http://dx.doi.org/10.11646/zoosymposia.5.1.28.

Full text

Abstract:

Lake Balaton is the largest shallow lake in Central Europe. A large part of its catchment area is a reputable and popular tourism area, where the quality of surface waters is in the center of public and scientific interest. The inflows of Lake Balaton are vulnerable, due to the strong human activity upstream. Despite their significance, the aquatic macroinvertebrate communities of these inflow streams are poorly known. In the summer of 2008, we investigated the distributional pattern of EPT (Ephemeroptera, Plecoptera, Trichoptera) assemblages, and their relationships with selected physico-chemical factors and landscape characteristics at different spatial scales. Samples were taken according to the AQEM sampling protocol at 20 stream sections with different environmental conditions. Multivariate analyses were used for evaluation. Altogether 8131 specimens (6225 Ephemeroptera, 133 Plecoptera, 1773 Trichoptera) belonging to 55 species (25 Ephemeroptera, 2 Plecoptera, 28 Trichoptera) were identified. Cloeon dipterum (L.) and Baetis spp. were the most common mayfly taxa, while caddisfly communities were dominated by limnephilids [Anabolia furcata Brauer, Potamophylax rotundipennis (Brauer)] and hydropsychids [Hydropsyche saxonica McLachlan, H. angustipennis (Curtis)]. The distribution of EPT assemblages was highly affected by pH, conductivity, dissolved oxygen, temperature and total dissolved solids. At reach scale, relationships were detected between spatial patterns of EPT assemblages and structure of riparian vegetation, type of sediment, and some hydromorphological characteristics (e.g., depth and width of stream bed, cover of aquatic vegetation, etc.). At medium and large scale, the ratio of natural and human-impacted areas proved to be the most influential factor.

APA, Harvard, Vancouver, ISO, and other styles

9

Kovács, Á., and A. Clement. "Impacts of the climate change on runoff and diffuse phosphorus load to Lake Balaton (Hungary)." Water Science and Technology 59, no. 3 (February 1, 2009): 417–23. http://dx.doi.org/10.2166/wst.2009.883.

Full text

Abstract:

The paper outlines a multi-component assessment of the impacts of the climate change on runoff and total phosphorus loads to the large shallow Lake Balaton in Hungary. Present hydrological cycle of the lake catchment has been examined using the rainfall-runoff model WetSpa. Particular phosphorus concentration in runoff was estimated on the basis of the simulated streamflow using an empirical power equation. Dissolved phosphorus concentrations were determined as a function of landuse and soil type of the corresponding sub-catchment. The model was calibrated and validated against daily observations manually at monitoring sites of sixteen inflowing streams around the lake. Runoff stemming from shoreline urban developments was calculated by the urban runoff simulation model SWMM. Phosphorus concentrations in urban runoff were calculated by an empirical relationship derived from field measurements. The model was henceforward run for climate change scenario analysis. Present weather data were modified by the climate change scenarios imported from the results of the CLIME project. The results indicate that the impact of the climate change on runoff and phosphorus load appears in the change of the distribution within a time period rather than in the total volume. However, due to the high uncertainties in climate models, the presented calculations are possible assumptions rather than established statements.

APA, Harvard, Vancouver, ISO, and other styles

10

Budai, P., and A. Clement. "Estimation of nutrient load from urban diffuse sources: experiments with runoff sampling at pilot catchments of Lake Balaton, Hungary." Water Science and Technology 56, no. 1 (July 1, 2007): 295–302. http://dx.doi.org/10.2166/wst.2007.464.

Full text

Abstract:

About a quarter of the total nutrient loading of Lake Balaton (Hungary) originates from urban diffuse sources, mostly from direct shoreline watersheds. This load cannot be measured directly. Sampling of urban runoff can help improving load estimations. The dynamic processes characterizing the accumulation and washoff of contaminants suggest that randomly observed concentrations are likely under- or overestimated. The results of two recent pilot programs aimed towards achieving continuous measurement of nutrient load carried by urban runoff are introduced. Stations were implemented in two pilot catchments located on the shore of Lake Balaton. Storm event runoff was sampled automatically and manually. Discharge, precipitation and rainfall intensities were also recorded. Results proved that the more a specific pollutant is associated with solid particles, the more of its load comes from a few but large storm events, nevertheless the cumulative effect of small rainfall events is not negligible, either. Event mean concentrations of solid-related pollutants were found to be dependent on rainfall intensity. The derived empirical relationships for SS, TP and TN event mean concentrations were indeed found to be applicable for reducing the uncertainty of load estimations of these pollutants significantly, as compared to using long-time average (i.e. annual mean) concentration values.

APA, Harvard, Vancouver, ISO, and other styles

11

Csáki, Péter, Kitti Gyimóthy, Péter Kalicz, Ján Szolgay, Katalin Anita Zagyvai-Kiss, and Zoltán Gribovszki. "Multi-model climatic water balance prediction in the Zala River Basin (Hungary) based on a modified Budyko framework." Journal of Hydrology and Hydromechanics 68, no. 2 (June 1, 2020): 200–210. http://dx.doi.org/10.2478/johh-2020-0016.

Full text

Abstract:

AbstractProviding information on the impacts of climate change on hydrological processes is becoming ever more critical. Modelling and evaluating the expected changes of the water resources over different spatial and time scales can be useful in several fields, e.g. agriculture, forestry and water management. Previously a Budyko-type spatially distributed long-term climate-runoff model was developed for Hungary. This research includes the validation of the model using historical precipitation and streamflow measurements for three nested sub-catchments of the Zala River Basin (Hungary), an essential runoff contributing region to Lake Balaton (the largest shallow lake in Central Europe). The differences between the calculated (from water balance) and the estimated (by the model) mean annual evapotranspiration varied between 0.4% and 3.6% in the validation periods in the sub-catchments examined. Predictions of the main components of the water balance (evapotranspiration and runoff) for the Zala Basin are also presented in this study using precipitation and temperature results of 12 regional climate model simulations (A1B scenario) as input data. According to the projections, the mean annual temperature will be higher from period to period (2011–2040, 2041–2070, 2071–2100), while the change of the annual precipitation sum is not significant. The mean annual evapotranspiration rate is expected to increase slightly during the 21st century, while for runoff a substantial decrease can be anticipated which may exceed 40% by 2071–2100 relative to the reference period (1981–2010). As a result of this predicted reduction, the runoff from the Zala Basin may not be enough to balance the increased evaporation rate of Lake Balaton, transforming it into a closed lake without outflow.

APA, Harvard, Vancouver, ISO, and other styles

12

Horel, Ágota, Tibor Zsigmond, Sándor Molnár, Imre Zagyva, and Zsófia Bakacsi. "Long-term soil water content dynamics under different land uses in a small agricultural catchment." Journal of Hydrology and Hydromechanics 70, no. 3 (August 23, 2022): 284–94. http://dx.doi.org/10.2478/johh-2022-0015.

Full text

Abstract:

Abstract Longer term monitoring of soil water content at a catchment scale is a key to understanding its dynamics, which can assist stakeholders in decision making processes, such as land use change or irrigation programs. Soil water monitoring in agriculturally dominated catchments can help in developing soil water retention measurements, for assessment of land use change, or adaptation of specific land management systems to climate change. The present study was carried out in the Pannonian region (Upper-Balaton, Hungary) on Cambisols and Calcisols between 2015 and 2021. Soil water content (SWC) dynamics were investigated under different land use types (vineyard, grassland, and forest) at three depths (15, 40, and 70 cm). The meteorological data show a continuous decrease in cumulative precipitation over time during the study with an average of 26% decrease observed between 2016 and 2020, while average air temperatures were similar for all the studied years. Corresponding to the lower precipitation amounts, a clear decrease in the average SWC was observed at all the land use sites, with 13.4%, 37.7%, and 29.3% lower average SWC for the grassland, forest, and vineyard sites, respectively, from 2016 to 2020 (measured at the 15 cm depth of the soil). Significant differences in SWC were observed between the annual and seasonal numbers within a given land use (p < 0.05). The lowest average SWC was observed at the grassland (11.7%) and the highest at the vineyard (28.3%). The data showed an increasing average soil temperature, with an average 6.3% higher value in 2020 compared to 2016. The grassland showed the highest (11.3 °C) and the forest soil the lowest (9.7 °C) average soil temperatures during the monitoring period. The grassland had the highest number of days with the SWC below the wilting point, while the forest had the highest number of days with the SWC optimal for the plants.

APA, Harvard, Vancouver, ISO, and other styles

13

Clement, A., L. Somlyódy, and L. Koncsos. "Modeling the phosphorus retention of the Kis-Balaton upper reservoir." Water Science and Technology 37, no. 3 (February 1, 1998): 113–20. http://dx.doi.org/10.2166/wst.1998.0188.

Full text

Abstract:

The Kis-Balaton reservoir system, consisting of the upper and lower reservoirs, is located near to the mouth of the Zala River. It was established for the protection of Lake Balaton against high nutrient loads. In accordance with the original plan prepared at the end of 70s the aim was that before entering the lake, nutrients - primarily phosphorus - will be removed by macrophytes. The Upper Reservoir started to operate in 1985. In contrast to the predictions, it became an open lake dominated by algae. Until 1991 about 50% of the external phosphorus load has been removed yearly. However, the retention efficiency has decreased considerably after reduction of the external load upon phosphorus removal at the wastewater treatment plant of the largest town of the Zala catchment. This observation can be explained by the increased contribution of the internal loading. To analyze the phosphorus removal mechanisms and to understand the behavior of the sediment, different water quality models were applied. The results show that the P retention is characterized by different processes acting spatially differently. Essentially, abiotic processes like settling of inorganic particulate P and the adsorption of dissolved inorganic P are responsible for the P retention in the reservoir, mostly in the neck of the Upper Reservoir. Simple models indicated that the internal loading increased after the external load reduction. In fact, it was not that the internal loading increased, but the adsorption decreased.

APA, Harvard, Vancouver, ISO, and other styles

14

Péter, László, K. Rajkai, L. Pásztor, J. Szabó, and I. Sisák. "Sensitivity of the swat model to soil organic carbon content: A Lake Balaton catchment case study." Cereal Research Communications 33, no. 1 (March 2005): 297–300. http://dx.doi.org/10.1556/crc.33.2005.1.73.

Full text

APA, Harvard, Vancouver, ISO, and other styles

15

Lanszki, József, Nikolett Nagyapáti, and L. Gabriella Széles. "Influencing factors of the occurrence of otters on southern and south-western catchment of Lake Balaton." Natura Somogyiensis, no. 26 (2015): 135–44. http://dx.doi.org/10.24394/natsom.2015.26.135.

Full text

APA, Harvard, Vancouver, ISO, and other styles

16

Van Dessel, Wim, Anton Van Rompaey, Lien Poelmans, and Peter Szilassi. "Predicting land cover changes and their impact on the sediment influx in the Lake Balaton catchment." Landscape Ecology 23, no. 6 (May 14, 2008): 645–56. http://dx.doi.org/10.1007/s10980-008-9227-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

17

Van Dessel, Wim, Anton Van Rompaey, Lien Poelmans, Peter Szilassi, Gyozo Jordan, and Gabor Csillag. "Predicting land cover changes and their impact on the sediment influx in the Lake Balaton catchment." Landscape Ecology 24, no. 7 (July 8, 2009): 987. http://dx.doi.org/10.1007/s10980-009-9382-4.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Jeney, Zsigmond, Marcell Molnár, István Magyary, István Lehoczky, Attila Zsolnai, Tamás Molnár, and Ildikó Benedek. "Genetic diversity of the European pond turtle (Emys orbicularis) in the South-West region of Hungary – first results." Amphibia-Reptilia 32, no. 4 (2011): 519–26. http://dx.doi.org/10.1163/156853811x610744.

Full text

Abstract:

AbstractA set of five polymorphic microsatellite markers developed in Emydoidea blandingii was characterized for crossspecies amplification in the European pond turtle, Emys orbicularis. The markers were tested for polymorphism in a total of 155 turtles sampled in four natural habitats in the Danube-Drava National Park, South-West Hungary in order to determine the genetic diversity of European pond turtle populations and to check the functionality of existing ecological corridors in the region. The number of alleles varied from 5 to 24. Observed heterozygosity was moderate (0.43-0.55), while the level for expected heterozygosity ranged from 0.76 to 0.80. Significant heterozygote deficit was found in the populations accompanied by a low degree of genetic differentiation (FST ranges from 0.0166 to 0.0652). Wahlund effect was demonstrated in two populations. The ecological corridor between two water catchment areas (Lake Balaton and Drava River) fulfils its role only partially.

APA, Harvard, Vancouver, ISO, and other styles

19

Sümegi, Pál, Sándor Gulyás, and Gusztáv Jakab. "Holocene paleoclimatic and paleohydrological changes in Lake Balaton as inferred from a complex quantitative environmental historical study of a lacustrine sequence of the Szigliget embayment." Documenta Praehistorica 35 (December 31, 2008): 33–43. http://dx.doi.org/10.4312/dp.35.3.

Full text

Abstract:

The present paper discusses the findings of a complex quantitative paleoecological investigation implemented for capturing the Upper Weichselian, Late Glacial and Postglacial development of Lake Balaton in western Hungary, in the heart of Transdanubia. The studied Late Pleistocene and Holocene lacustrine marl and peat sequence preserved the complete evolutionary history of the catchment basin of the Szigliget Embayment from the time of its birth. The inferred palaeohydrological changes, along with that of the hydroseries, were compared to those observable coevally in the terrestrial vegetation. According to the available data, the birth of the studied embayment can be put to the Late Glacial/Upper Weichselian transition. A wide array of hydrophyte vegetation and habitat types emerged in the embayment depending on the actual water supply and geomorphologic position. Based on a collective quantitative evaluation of the observed sedimentary features and fossil assemblages retrieved from the sequence, a record of paleohydrological transformations in the littoral part of the lake was drawn.

APA, Harvard, Vancouver, ISO, and other styles

20

Ferincz, Árpád, Nora Kováts, Árpád Benkő-Kiss, and Gábor Paulovits. "New record of the spiny-cheek crayfish, Orconectes limosus (Rafinesque, 1817) in the catchment of Lake Balaton (Hungary)." BioInvasions Records 3, no. 1 (March 2014): 35–38. http://dx.doi.org/10.3391/bir.2014.3.1.06.

Full text

APA, Harvard, Vancouver, ISO, and other styles

21

Weisz, Márta, Klára Polyák, and József Hlavay. "Fractionation of elements in sediment samples collected in rivers and harbors at Lake Balaton and its catchment area." Microchemical Journal 67, no. 1-3 (December 2000): 207–17. http://dx.doi.org/10.1016/s0026-265x(00)00064-3.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Ferincz, Árpád, Ádám Staszny, András Weiperth, Péter Takács, Béla Urbányi, Lorenzo Vilizzi, Gábor Paulovits, and Gordon H. Copp. "Risk assessment of non-native fishes in the catchment of the largest Central-European shallow lake (Lake Balaton, Hungary)." Hydrobiologia 780, no. 1 (February 4, 2016): 85–97. http://dx.doi.org/10.1007/s10750-016-2657-2.

Full text

APA, Harvard, Vancouver, ISO, and other styles

23

Umar, H., U. R. Irfan, Sahabuddin, and M. S. Cakrawala. "The effect of liquefaction on mineral breakage physical in the Palu City, Central Sulawesi Province, Indonesia." IOP Conference Series: Earth and Environmental Science 1134, no. 1 (January 1, 2023): 012054. http://dx.doi.org/10.1088/1755-1315/1134/1/012054.

Full text

Abstract:

Abstract The Central Sulawesi province had a 7.4 magnitude earthquake in 2018, which was followed by liquefaction in Palu City, Donggala Regency, Sigi Regency, and Parigi Moutong Regency. The boulder sediments, sand, silt, and clay make up the liquefaction material. The extent of mineral damage, mineral surface area, porosity, and sand permeability were all evaluated in this study. By digging a 1 x 1 x 2 m trench at 27 sites, a vertical sampling of liquefaction material was done in both liquefaction-affected and unaffected areas. Smear slides for petrographic investigation were created after the separation of grain sizes. Quartz, biotite, orthoclase, hornblende, plagioclase, and opaque minerals were among the minerals found. Mineral area values in the liquefaction area are lower than in the unaffected area. The Petobo liquefaction area has the highest value of mineral damage, followed by Balaroa, while Sibalaya has the lowest value. In the liquefaction area, where quartz and opaque minerals are less damaged than other minerals, the percentage of mineral damage exceeds 40%. A factor in the deterioration in the carrying capacity of residential land is liquefaction, which causes significant mineral damage but little change in the value of the mineral area. It is suggested that the Petobo and Balaroa areas be designated as green spaces and water catchment areas, while the Sibalaya area can be repurposed as a set of regulated and constrained residential communities.

APA, Harvard, Vancouver, ISO, and other styles

24

Decsi, Bence, Ágnes Vári, and Zsolt Kozma. "The effect of future land use changes on hydrologic ecosystem services: a case study from the Zala catchment, Hungary." Biologia Futura 71, no. 4 (July 29, 2020): 405–18. http://dx.doi.org/10.1007/s42977-020-00032-6.

Full text

Abstract:

AbstractMaintaining and, where possible, improving the ecological status of our water resources are of particular importance for the future. So, one of the main drivers of landscape design must be to protect our waters. In this study, we carried out an evaluation of four hydrologic ecosystem services (HES) in the Zala River catchment area, the largest tributary of Lake Balaton (more than half of the lake’s surface inflow comes from the Zala River), Hungary. The lake has great ecological, economic and social importance to the country. We used the cell-based InVEST model to quantify the spatial distribution of flood control, erosion control and nutrient retention ecosystem services for phosphorus and nitrogen; then, we carried out an aggregated evaluation. Thereby, we localized the hot spots of service delivery and tested the effect of focused land use changes in critical areas of low performance on the examined four HES. Forests proved to have the best aggregated result, while croplands near the stream network performed poorly. The modelled change in land use resulted in significant improvement on nutrient filtration and moderate to minimal but improving change for the other HES in most cases. The applied method is suitable as a supporting tool at the watershed level for decision-makers and landscape designers with the aim of protecting water bodies.

APA, Harvard, Vancouver, ISO, and other styles

25

Ferincz, Árpád, Zsófia Horváth, Ádám Staszny, András Ács, Nora Kováts, Csaba F. Vad, Judit Csaba, Szandra Sütő, and Gábor Paulovits. "Desiccation frequency drives local invasions of non-native gibel carp (Carassius gibelio) in the catchment of a large, shallow lake (Lake Balaton, Hungary)." Fisheries Research 173 (January 2016): 37–44. http://dx.doi.org/10.1016/j.fishres.2015.05.013.

Full text

APA, Harvard, Vancouver, ISO, and other styles

26

Petrovszki, Judit, Péter Szilassi, and Tibor Erős. "Mass tourism generated urban land expansion in the catchment of Lake Balaton, Hungary – analysis of long-term changes in characteristic socio-political periods." Land Use Policy 142 (July 2024): 107185. http://dx.doi.org/10.1016/j.landusepol.2024.107185.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Zlinszky, A., and G. Timár. "Historic maps as a data source for socio-hydrology: a case study of the Lake Balaton wetland system, Hungary." Hydrology and Earth System Sciences 17, no. 11 (November 20, 2013): 4589–606. http://dx.doi.org/10.5194/hess-17-4589-2013.

Full text

Abstract:

Abstract. Socio-hydrology is the science of human influence on hydrology and the influence of the water cycle on human social systems. This newly emerging discipline inherently involves a historic perspective, often focusing on timescales of several centuries. While data on human history is typically available for this time frame, gathering information on the hydrological situation during such a period can prove difficult: measured hydrological data for such long periods are rare, while models and secondary data sets from geomorphology, pedology or archaeology are typically not accurate enough over such a short time. In the first part of this study, the use of historic maps in hydrology is reviewed. Major breakthroughs were the acceptance of historic map content as valid data, the use of preserved features for investigating situations earlier than the map, and the onset of digital georeferencing and data integration. Historic maps can be primary quantitative sources of hydro-geomorphological information, they can provide a context for point-based measurements over larger areas, and they can deliver time series for a better understanding of change scenarios. In the second part, a case study is presented: water level fluctuations of Lake Balaton were reconstructed from maps, levelling logs and other documents. An 18th century map system of the whole 5700 km2 catchment was georeferenced, integrated with two 19th century map systems, and wetlands, forests and open water digitized. Changes in wetland area were compared with lake water level changes in a 220 yr time series. Historic maps show that the water level of the lake was closer to present-day levels than expected, and that wetland loss pre-dates drainage of the lake. The present and future role of historic maps is discussed. Historic hydrological data has to be treated with caution: while it is possible to learn form the past, the assumption that future changes will be like past changes does not always hold. Nevertheless, old maps are relatively accessible data sets and the knowledge base for using them is rapidly growing, and it can be expected that long-term time series will be established by integrating georeferenced map systems over large areas. In the Appendix, a step-by-step guide to using historic maps in hydrology is given, starting from finding a map, through georeferencing and processing the map to publication of the results.

APA, Harvard, Vancouver, ISO, and other styles

28

Zlinszky, A., and G. Timár. "Historic maps as a data source for socio-hydrology: a case study of the Lake Balaton wetland system, Hungary." Hydrology and Earth System Sciences Discussions 10, no. 6 (June 19, 2013): 7733–81. http://dx.doi.org/10.5194/hessd-10-7733-2013.

Full text

Abstract:

Abstract. Socio-hydrology is the science of human influence on the water cycle and the influence of the water cycle on human social systems. This newly emerging discipline inherently involves a historic perspective, often focusing on time scales of several centuries. While data on human history is typically available for this time frame, gathering information on the hydrological situation during such a period can prove difficult: measured hydrological data for such long periods are rare, while models and secondary datasets from geomorphology, pedology or archaeology are typically not accurate enough over such a short period. In the first part of this study, the use of historic maps in hydrology is reviewed. Major breakthroughs were the acceptance of historic map content as valid data, the use of preserved features for investigating situations earlier than the map, and the onset of digital georeferencing and data integration. Historic maps can be primary quantitative sources of hydro-geomorphological information, they can provide a context for point-based measurements over larger areas, and they can deliver time series for a better understanding of change scenarios. In the second part, a case study is presented: Water level fluctuations of Lake Balaton were reconstructed from maps, levelling logs and other documents. An 18th century map system of the whole 5700 km2 catchment was georeferenced, integrated with two 19th century map systems and wetlands, forests and open water digitized. Changes in wetland area were compared with lake water level changes in a 220 yr time series. Historic maps show that the water level of the lake was closer to present-day levels than expected, and that wetland loss pre-dates drainage of the lake. The present and future role of historic maps is discussed. Historic hydrological data has to be treated with caution: while it is possible to learn from the past, the assumption that future changes will be like past changes does not always hold. Nevertheless, old maps are relatively accessible datasets and the knowledge base for using them is rapidly growing, and it can be expected that long-term time series will be established by integrating georeferenced map systems over large areas. In the Appendix, a step-by-step guide to using historic maps in hydrology is given, starting from finding a map, through georeferencing and processing the map to publication of the results.

APA, Harvard, Vancouver, ISO, and other styles

29

Kása, Ilona, Györgyi Gelybó, Ágota Horel, Zsófia Bakacsi, Eszter Tóth, Sándor Koós, Márton Dencső, Johannes Deelstra, Sándor Molnár, and Csilla Farkas. "Evaluation of three semi-distributed hydrological models in simulating discharge from a small forest and arable dominated catchment." Biologia 72, no. 9 (January 1, 2017). http://dx.doi.org/10.1515/biolog-2017-0108.

Full text

Abstract:

AbstractCatchment scale hydrological models are promising tools for simulating the effect of catchment-specific processes and management on soil and water resources. Here, we present a model intercomparison study of runoff simulations using three different semi-distributed rainfall-runoff catchment models. The objective of this study was to demonstrate the applicability of the Hydrologiska Byrans Vattenavdelning (HBV-Light); Precipitation, Evapotranspiration and Runoff Simulator for Solute Transport (PERSiST); and INtegrated CAtchment (INCA) models on Somogybabod Catchment, near Lake Balaton, Hungary.The models were calibrated and validated against observed discharge data at the outlet of the catchment for the period of January 1, 2006 –July 12, 2015. Model performance was evaluated using graphical representations, e.g. daily and monthly hydrographs and Flow Duration Curves (FDC) and model evaluation statistic; Nash–Sutcliffe efficiency (NSE) and coefficient of determination (

APA, Harvard, Vancouver, ISO, and other styles

30

KAYA, Coşkun, and Atilla KARATAŞ. "Geomorphology of the Lower Catchment of Ayvalıtohma Stream." Fırat Üniversitesi Sosyal Bilimler Dergisi, September 8, 2022. http://dx.doi.org/10.18069/firatsbed.1105110.

Full text

Abstract:

Ayvalıtohma Stream Basin is the sub-basin of Tohma Stream, which is one of the western branches of the Euphrates River. The geomorphological features of the study area between Darende- Hekimhan (Malatya) Gürün and Kangal (Sivas) were determined within the framework of field studies and geomorphological analyzes on synthetic surfaces. The study area generally consists of plateaus between Uzunyayla Plateau and Malatya Basin and deeply disssected by streams. The narrow and is deeply gorge and canyon valleys opened by Ayvalıtohma Stream connect Uzunyayla, Ayvalı-Kuluncak, Darende-Balaban depressions. These gorges and canyons, which are typically seen around Gürun, Darende, Kuluncak and buried in the karstic foundation, played an important role in the formation of the flood plains along the Ayvalıtohma Stream. The Ayvalı-Kuluncak Depression, which forms the center of the study area, has the characteristics of an intermountain basin developed in the Oligocene. Detrital deposits such as conglomerate, sandstone and mudstone, which were deposited in the Oligocene and had low erosion resistance, revealed the areas that suffered the most erosion in the basin. While these non-resistance rocks cause erosion, the thick limestones in the mountainous and plateau areas have led to the development of relatively macro karst forms, especially between the elevation of 1700-2100 m.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Balason catchment'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles