Wszystkie pola: river sediment - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: A Performance Comparison of Various Artificial Intelligence Approaches for Estimation of Sediment of River Systems
Autorzy:: Hayder, Gasim
Solihin, Mahmud Iwan
Kushiar, Khairul Faizal Bin
Powiązania:: https://bibliotekanauki.pl/articles/1955428.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: sediment estimation
artificial intelligence
machine learning prediction
river system
visual programming
hydro-informatics system
Opis:: Sediment is a universal issue that is generated in the river catchment and affects the river flow, reservoir capacity, hydropower generation and dam structure. This paper aims to present the result of experimentation in sediment load estimation using various machine learning algorithms as a powerful AI approach. The data was collected from eight locations in upstream area of Ringlet reservoir catchment. The input variables are discharge and suspended solid. It was found that there is strong correlation between sediment and suspended solid with correlation coefficient of R = 0.9 . The developed ML model successfully estimated the sediment load with competitive results from ANN, Decision Tree, AdaBoost and SVM. The best result was produced by SVM (v-SVM version) where very low RMSE was generated for both training and testing dataset despite its more complicated hyperparameters setup. The results also show a promising application of machine learning for future prediction in hydro-informatic systems.
Źródło:: Journal of Ecological Engineering; 2021, 22, 7; 20-27
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Water Quality Examination in the Stream Sediment of River Sitnica – the Assessment of Toxic Trace Elements
Autorzy:: Troni, Naser
Hoti, Ramiz
Halili, Jeton
Omanovic, Dario
Laha, Fisnik
Gashi, Fatbardh
Powiązania:: https://bibliotekanauki.pl/articles/1839079.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: Sitnica river
river water
stream sediment
quality assessment
inductively coupled plasma
mass spectroscopy
Opis:: It is presently well-recognized that the contamination of aquatic sediments in Kosovo is a widespread phenomenon. The observation of the chemical analyses of water and sediments is essential to determine the extent of trace elements in these ecosystems. Hence, in order to be able to determine the mass concentration of the predominant elements present in river Sitnica, inductively coupled plasma mass spectroscopy (ICP-MS) was used for this research. Moreover, a comparison of the mass concentration of water elements with the mass concentration of the elements found in the Sitnica sediments was provided. Utilizing the results obtained from the ICP-MS analysis, it was shown that the mass concentration of nickel, arsenic, zinc, cadmium, lead, copper, aluminum in certain water sample stations exceeds the permissible sediment quality criteria. Considering the toxicity that heavy metals exert on the aquatic environment, this research aimed to assess and measure the metal toxicity, because only then, a proper solution can be suggested to sustain freshwater ecosystems and to prevent constant damage from the human activity.
Źródło:: Journal of Ecological Engineering; 2021, 22, 2; 234-243
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Water and Sediment Quality Status of the Toplluha River in Kosovo
Autorzy:: Shehu, Ilir
Powiązania:: https://bibliotekanauki.pl/articles/124899.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: water
sediment
quality
river
Toplluha river
Kosovo
Opis:: The surface water quality and level of metal contents in the contamination of the Toplluha river sediment were determined by means of statistical techniques and pollution indicators. The samples of water and sediments were taken in five different locations along the Toplluha river in the spring period 2013 and 2019 using standard methods for analysis. International standards (WHO 2004) were used to assess the quality of water. The samples of water in some of the locations were above these criteria levels. The heavy metal contents in the sediment were in the following order: Cu > Zn > Cr > Ni > Pb > Cd. For the evaluation of the heavy metal content, some factors were applied: enrichment factor (EF), pollution load index (PLI) and index of geoccumulation (Igeo). Cu and Pb have a significance enrichment according to the calculated EF values. The Igeo index values for Cu and Zn were at a higher level. The PLI index values were at a progressive high level from stations S3 to S5. Therefore, the preliminary treatment of the discharging waters is indispensable.
Źródło:: Journal of Ecological Engineering; 2019, 20, 11; 266-275
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Features of the Sediment Runoff Regime Downstream the Ile River
Autorzy:: Duskayev, Kassym
Myrzakhmetov, Akhan
Zhanabayeva, Zhanar
Klein, Igor
Powiązania:: https://bibliotekanauki.pl/articles/125037.pdf
Data publikacji:: 2020
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: sediment transport
sediment runoff characteristic
suspended load
bed load
granulometric composition
Opis:: This paper is devoted to study on the sediment runoff of the Ile River downstream. The article analyses the Kapshagai reservoir impact on the regime and characteristics of the sediment runoff in the Ile River downstream before and after construction of the reservoir in 1970. Along with the calculation of characteristics of sediment runoff, an assessment of the amount of the suspended sediment, which is in the bowl of the reservoir, was shown. Furthermore, the impact reservoir on the granulometric composition of the suspended and bed sediment of Ile River was calculated.
Źródło:: Journal of Ecological Engineering; 2020, 21, 2; 117-125
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: Hydroelectric Power Plants and River Morphodynamic Processes
Autorzy:: Kiraga, Marta
Powiązania:: https://bibliotekanauki.pl/articles/1955425.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: hydromorphology
river morphology
hydropower
energy
river
sediment
erosion
Opis:: Hydropower is one of the renewable energy sources. Hydropower plants generate electricity using the kinetic energy of flowing water. Although hydroelectric power plants are not as prominent as solar or wind farms, it should be noted that they generate the most significant amount of the power. They are also the most technically advanced projects. Power plants are built with different technical parameters of turbines, different sizes of dams or weirs and different ways of exploiting the energy of flowing water. A common feature, however, is the significant impact of hydroelectric power plants on the functioning of adjacent regions. The paper divides this impact into economic and local development, landscape, and ecological functions, emphasizing the interaction of these influences. The paper discusses the hydromorphological changes taking place in the immediate vicinity of the structure, as a consequence of channel development. The processes of aggradation and degradation of the channel are the answer to hydrodynamic equilibrium loss. These hydrodynamic processes are associated with the subsequent ecological response of the habitat. The most important of these include the dynamic equilibrium loss by the river and the subsequent morphological parameters striving to restore it according to Lane’s relation, known as the most important principle in the fluvial morphology science. The impact of the hydropower plant on the fluvial environment results, first of all, from a significant environmental impact of the damming of the river itself. If the structure is correctly designed, maintained, and operated, it allows controlling the water conditions upstream and downstream with simultaneous energy production. Due to several geometric, hydraulic, and granulometric changes, and further, the resultant economic, landscape, and natural changes that significantly affect the operation of a region, these should be considered as early as the design stage and should be an integral part of any hydroelectric project.
Źródło:: Journal of Ecological Engineering; 2021, 22, 7; 163-178
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Assessment of heavy metals contents in bottom sediments of Bug river
Autorzy:: Skorbiłowicz, E
Powiązania:: https://bibliotekanauki.pl/articles/123129.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: Bug river
bottom sediment
heavy metals
Opis:: The development of industry, agriculture, and transport contributes to an increased environmental pollution by heavy metals. The aim of the study was preliminary assessment of the contents of selected metals (lead, cobalt, copper, chromium, cadmium and nickel) in the sediments of Bug river. The study comprised part of the river flowing through Poland. It was found that the Bug river sediments are not contaminated in respect to the content of tested metals. Based on the analysis of the study results, these metals can be lined up in the following order: Cr > Pb > Cu > Ni > Co > Cd. Statistical analysis showed that copper and chromium occur in Bug river sediments in forms bindings with organic matter in majority of cases. The granulometric analysis of sediments from Bug river revealed the largest percentage of two fractions: 1.0–0.2 mm with average of 47.7 ± 19.77% and 0.2–0.1 mm with average of 20.6 ± 7.7%. These are the dominant fractions with the accumulation of metals in river sediments, which has been confirmed by statistical analysis.
Źródło:: Journal of Ecological Engineering; 2014, 15, 3; 82-89
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Zinc and lead in bottom sediments and aquatic plants in river Narew
Autorzy:: Skorbiłowicz, E.
Powiązania:: https://bibliotekanauki.pl/articles/124796.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: river
bottom sediment
aquatic plants
zinc
lead
Opis:: Aquatic ecosystems are a valuable part of natural environment. The increasing level of pollution in waters transforming biocoenoses and other adverse effects of the impact of toxic substances have contributed to the development of biological monitoring. The aim of the study was to determine the changes in contents of zinc and lead in bottom sediments and roots of aquatic plants: Phragmites australis and Acorus calamus in the river Narew. There were 14 points on the river, from where samples of bottom sediments and plant material were collected. The contents of lead and zinc were determined by means of flame atomic absorption spectrophotometry using Varian device. It was proven that bottom sediments were characterized by low contents of zinc and lead except from two sampling points: in Bondary and Narew. Achieved results of analyzes of plant material showed a slight exceeding in the case of lead. Spatial distribution of zinc and lead contents in examined roots of plants coincided with their contents in bottom sediments, which was also confirmed by statistical analysis. It was proven that aquatic plants had greater tendency for accumulation of metals than bottom sediments.
Źródło:: Journal of Ecological Engineering; 2015, 16, 1; 127-134
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:: Analiza potencjalnej intensywności transportu rumowiska na odcinku rzeki Ner
Analysis of potential intensity of sediment transport on selected reach of the Ner river
Autorzy:: Szałkiewicz, E.
Dysarz, T.
Wicher-Dysarz, J.
Powiązania:: https://bibliotekanauki.pl/articles/399735.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: transport rumowiska
rzeka Ner
modelowanie procesów rzecznych
zastosowanie GIS w hydrologii
sediment transport
Ner river
sediment transport modeling
GIS in hydrology
Opis:: Celem niniejszej pracy było wykonanie analiz symulacji transportu rumowiska dla wybranego odcinka rzeki Ner, z jednoczesnym wykorzystaniem narzędzi GIS. Praca została wykonana na przekrojach z 2012 roku wykonanych na potrzeby ISOK (Informatyczny System Ochrony Kraju). Przy pomocy programu ArcGIS został przygotowany numeryczny model koryta i doliny cieku, natomiast symulacje ruchu ustalonego i transportu rumowiska dla 5 okresów dziesięcioletnich przeprowadzono w programie HEC-RAS 5.0 Beta. Po przeprowadzeniu obliczeń zaktualizowana geometria koryta została utworzona za pomocą narzędzi RAS Mapper i ponownie zostało wygenerowane nowe koryto po symulacjach. ArcGIS został wykorzystany powtórnie podczas opracowywania wyników i posłużył do wygenerowania nowych rzędnych dna w stanie początkowym i końcowym. Różnica między nimi zobrazowała wielkość zachodzącej erozji i akumulacji. Proces erozji zaszedł w 13 przekrojach na analizowanym odcinku (średnia różnica rzędnych ujemna), natomiast akumulację zaobserwowano w 53 przekrojach. Maksymalna wartość spłycenia dna wyniosła 1,24 m w przekroju w km 18+868, natomiast największe pogłębienie wystąpiło w km 8+654 i wyniosło – 0,76 m. Wszystkie wartości ponownie zostały naniesione na mapę topograficzną dla lepszego zobrazowania uzyskanych wyników.
The aim of this study was to perform a simulation of sediment transport for the section of the river Ner, while also utilizing GIS tools. Using the ArcGIS numerical model of channel and stream valleys were developed, and motion simulations and sediment transport set for 5 ten-year periods were performed in HEC-RAS. Updated geometries after the simulations were created using the tools of RAS Mapper. ArcGIS was used again for analysing the results. It was used to generate ordinates of bottom in the initial state and final. The difference between them illustrated the magnitude of erosion and accumulation. The process of erosion occurred in 13 sections of the analysed model (the standard differential ordinates negative), while the accumulation in 53 sections. The maximum value of shallowing bottom was 1.24 m (cross-section at km 18 + 868), while the largest deepening occurred at km 8 + 654 (– 0.76 m). All values, using ArcGIS, were marked on othophotomap.
Źródło:: Inżynieria Ekologiczna; 2015, 45; 195-204
2081-139X
2392-0629
Pojawia się w:: Inżynieria Ekologiczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 9.

Tytuł:: Heavy Metals and Arsenic in Water, Sediment and the Muscle of Oncorhynchus Mykiss from the Tishgo River in the Central Andes of Peru
Autorzy:: Condor, Andrés
Custodio, María
Chanamé, Fernán
Cuadrado, Walter
Peñaloza, Richard
Powiązania:: https://bibliotekanauki.pl/articles/1839590.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: heavy metals
arsenic
water
sediment
Oncorhynchus mykiss
Tishgo river
Opis:: The concentration of Cu, Pb, Zn and As in water, sediment and muscle of Oncorhynchus mykiss from the Tishgo river in the central Andes of Peru were analyzed. The water, sediment and fish samples were collected from 36 sites in three sampling sectors. The analytical determination was performed by flame atomic absorption spectrophotometry. The mean Pb concentrations in the water from the three sampling sectors showed significant differences (p < 0.05) which exceeded the values of the Peruvian standard and the WHO. The mean concentrations of Cu, Pb and As in sediment did not present significant differences (p > 0.05) in the three sectors evaluated. The redundancy analysis (RDA) revealed that the concentrations of As and Pb in water, and Cu, As and Zn in sediment significantly influence the concentration of these elements in the O. mykiss muscle. The mean concentrations of Cu, Pb, Zn and As in the O. mykiss muscle were lower than those established by international regulations. Therefore, the concentrations of heavy metals and As recorded in this study do not represent a threat to the consumption of O. mykiss from the Tishgo river.
Źródło:: Journal of Ecological Engineering; 2021, 22, 4; 156-166
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:: Macrophytes as Ełk River Quality Status Evaluation Indicators Based on Example of Nickel
Autorzy:: Skorbiłowicz, E.
Skorbiłowicz, M.
Zamojska, E.
Ofman, P.
Wójtowicz, P.
Powiązania:: https://bibliotekanauki.pl/articles/123062.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: river
nickel
bottom sediment
macrophytes
Opis:: The aim of the study was to analyze the content of Ni in fractions of 1.0–0.2 mm, 0.2–0.1 mm, 0.1–0.063 mm, 0.063–0.02 mm, and <0.02 mm of river bottom sediments and plants (root, stem, leaf) of broadleaf cattail (Typha latifolia), yellow water lilies (Nuphar lutea), and cowbane (Cicuta virosa). Nickel content in bottom sediment was slightly higher than the geochemical background. The largest amounts of Ni were associated with the finest fraction, while the smallest with the thickest fraction. The highest content of this element was recorded at the point Ełk Barany, which was connected with developing industry in the city of Ełk. All of the tested plants showed greater Ni contents than the amount naturally occurring in plants. In most cases, most of Ni was associated with plant roots, and the least with leaves. It has been proven that aquatic plants can be good indicators of the aquatic environment status.
Źródło:: Journal of Ecological Engineering; 2016, 17, 3; 155-160
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:: Analysis and Modeling the Streambed Evolution after the Check Dam Restoration: the Case of Krzczonówka Stream
Autorzy:: Łapuszek, Marta
Powiązania:: https://bibliotekanauki.pl/articles/124542.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: check dam
sediment movement
river restoration
Opis:: In the Upper Vistula Basin, series of check dams are located on almost each of mountain stream. These streams are strongly affected by the presence of dams that disrupt the sediment movement in the channel. Moreover, the check dams are in poor technical condition. The current study focuses on the Krzczonówka Stream, a left-bank tributary of the Raba River, where restoration works were undertaken in 2014 involving lowering of a check dam. The aim of the project was the continuity of the stream corridor for fish migration restoration. This paper aims to provide an analysis of the streambed evolution and a numerical analysis of the impact of check dam lowering and removal of sediment, previously accumulated upstream under the geomorphologic conditions in the studied stream after three years of project execution. A 1D sediment transport model was employed to estimate the areas of erosion and deposition throughout the river course. The calculations show that the thickness of the deposited sediment ranged from 0.20 up to 0.91 m at 1.5 km of the reach. The layer thickness deposited form 2.1 to 1.75 km of the reach, is rather thin; subsequently, the layer thickness increases and the highest values are reached at the area of 1.35 – 1.7 km. The local erosion is observed in 1.1 km of the reach. It is very important to note that the identified erosional and accumulation tendencies are the same at corresponding cross sections measured as calculated based on the model. This also provides a practical form of model validation. Additionally, the stream channel evolution on the base on low annual water stages in Krzczonów gauging station, located downstream the dam, indicates that the bottom has increased in this section by about 50 cm. The comparison of cross-sectional geometry in years of 2015–2016 (after flood event) shows that the stream channel moved in the transverse direction (bank erosion and deposition) and the streambed level has changed slightly. Currently, the stream channel does not seem to be in a state of hydrodynamic equilibrium. Thus, further field measurements will try to indicate when this balance is achieved.
Źródło:: Journal of Ecological Engineering; 2019, 20, 1; 188-196
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:: Heavy Metals in the Water, Sediment, and Fish Harvested from the Krueng Sabee River Aceh Province, Indonesia
Autorzy:: Nasir, Muhammad
Muchlisin, Zainal A.
Saiful, Saiful
Suhendrayatna, Suhendrayatna
Munira, Munira
Iqhrammullah, Muhammad
Powiązania:: https://bibliotekanauki.pl/articles/1955570.pdf
Data publikacji:: 2021
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: water quality
sediment
gold mine
fish
heavy metals
Krueng Sabee
Opis:: The pollution of rivers from human activities such as housing, markets, workshops, transportation, land cultivation, and industry has become an issue. The increasing contribution of heavy metals to pollution in rivers has a direct effect on the metal bioaccumulation in fish. Therefore, this study aimed to examine the concentrations of Cd, Cu, and Pb in the waters, sediment, and fish harvested from the Krueng Sabee River, Aceh Province, Indonesia. Furthermore, the water, sediment, and fish samples were collected from six locations representing the upstream and downstream regions of the river. Cd, Cu, and Pb were analyzed using Atomic Absorption Spectrophotometry (AAS). The results showed that Cd, Cu, and Pb were not detected in the water, while the concentration of Cd in the sediments ranges between 0.0544 to 0.2683 mg kg-1, Cu ranges between 4.4149 to 14.8160 mg kg-1, and Pb ranges between 0.9186–15.4954 mg kg-1. Therefore, Cd, Cu, and Pb in the water and sediment were below the quality standard, but these heavy metals in the fish sample met the threshold limit. The highest Cd concentration was reported in Tor soro (5.5591 mg kg-1), and the highest concentration of Cu was reported in Mugil cephalus (6.7021 mg kg-1), while the higher Pb concentration was reported in Cyclocheilichthys Apogon (0.0279 mg kg-1).
Źródło:: Journal of Ecological Engineering; 2021, 22, 9; 224-231
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:: Problem zamulania zbiorników kaskady Soły
Sediment accumulation problem in Soła River dam cascade
Autorzy:: Jaguś, A.
Powiązania:: https://bibliotekanauki.pl/articles/399824.pdf
Data publikacji:: 2017
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: zbiornik zaporowy
kaskada Soły
osady denne
ochrona zasobów wodnych
dam water reservoir
Soła River dam cascade
bottom sediments
water resources protection
Opis:: W artykule przedstawiono problem zamulania zbiorników zaporowych. Studia dotyczyły kaskady rzeki Soły, składającej się z trzech zbiorników: Tresna, Porąbka, Czaniec. Pełni ona ważną rolę w gospodarce wodnej województwa śląskiego. Wykazano, że obszar zlewniowy jest niewłaściwie zagospodarowany, co w warunkach górskich sprzyja procesom spływu powierzchniowego i erozji. Soła, zwłaszcza podczas wezbrań, transportuje duże ilości rumowiska, które prawie w całości jest deponowane w zbiorniku Tresna. Tempo zamulania zbiornika Tresna wynosi 0,309 mln m³ rocznie, a zbiornika Porąbka 0,042 mln m³ rocznie. Zbiornik Czaniec jako silnie przepływowy nie gromadzi osadów. Działania zapobiegające zamulaniu są niewystarczające – powinny być realizowane systemowo zwłaszcza w zlewni Soły powyżej zbiornika Tresna, aby utrzymać jego możliwości retencyjne.
The paper focuses on the problem of sediment accumulation in dam reservoirs. The studies were conducted in Soła River dam cascade containing three reservoirs: Tresna, Porąbka, Czaniec. It plays an important role in the water management in Silesian province. It was revealed that the catchment area is improperly managed which, under the mountainous conditions, leads to surface runoff and erosion processes. Soła, especially during the floods, transports large quantities of debris that are almost entirely deposited in the Tresna reservoir. The rate of deposit accumulation in Tresna water body amounts to 0.309 million m,sup>3 per year, and in the Porąbka reservoir it is estimated to 0.042 million m³ per year. The Czaniec reservoir, as fast flow reservoir, does not accumulate deposits at all. The actions aiming at prevention of sediments accumulation are insufficient – they should be realized systemically particularly in the Soła catchment above Tresna reservoir in order to maintain its retention capability.
Źródło:: Inżynieria Ekologiczna; 2017, 18, 5; 92-102
2081-139X
2392-0629
Pojawia się w:: Inżynieria Ekologiczna
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:: The Impact of Bridges on the Process of Water Turbidity on the Example of Large Lowland Rivers
Autorzy:: Szatten, Dawid
Habel, Michał
Babiński, Zygmunt
Obodovskyi, Oleksandr
Powiązania:: https://bibliotekanauki.pl/articles/125164.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: water turbidity
bridge
lower Vistula river
Sukhona river
suspended sediment continuum
contraction scour
Opis:: The transformations of river channels as a result of human activity may reflect the level of anthropogenic pressure. Recorded in macroscale, they are indicators of transformations for the larger part of the river basin, while in the microscale they usually refer to its fragment. The human activity that has the strongest influence on the fluvial processes, including suspended sediment transport, is the interference in the riverbed, such as hydrotechnical construction (create of water stages) or transformation of the river banks (concreting of the river banks). The aim of the research was to determine the impact of bridges on the process of water turbidity in the longitudinal profile of large lowland rivers. The research area was the lower reach of Vistula – bridge profiles: Torun, Bydgoszcz, Kiezmark (Poland) and bridge profile on Sukhona – a tributary of the Northern Dvina River near the city of Veliky Ustyug (Russia – Arkhangelsk Oblast). The research conducted in the years 2013–2017 included the measurements of water turbidity in the cross-sections of the above-mentioned rivers. The determinations of water turbidity were carried out using traditional (granulometry analysis) and nephelometric methods (devices: LISST-25X and turbidimeter). The impact of bridges on the variability of water turbidity was determined. The obtained results were related to the variability of depth conditions (bathymetric measurements) and hydrodynamics in the cross-section profile of the channel.
Źródło:: Journal of Ecological Engineering; 2019, 20, 10; 155-164
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:: Exploration of Physico-Chemical Parameters in Environmental Matrices of the River Cerica and a Segment of the River Drini I Bardhë
Autorzy:: Bajraktari, Naser
Kastrati, Granit
Morina, Ilir
Bajraktari, Ylber
Powiązania:: https://bibliotekanauki.pl/articles/125418.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:: Drini i Bardhë
Cerica
water quality
sediment
soil
pollution
monitoring
Opis:: A study investigated physicochemical parameters in environmental matrices along the river Cerica waters. A corre- lation between the actual level of pollution of this river and its impact on the Drini i Bardhë River was determined. The extent of its pollution, was conducted following the identification of pollution sources, which consequently allowing to determine the necessary steps for their isolation. The monitoring of heavy metals, physicochemical parameters, nutrients was carried out in all country-sample (locations). In particular, there where are significant sources of pollution of surface waters, as a result of industrial activities and wastewater discharge. Determining of the locations and heavy metals concentrations was carried out in sediments and agricultural lands in this region, with the purpose to reflect the actual stat.
Źródło:: Journal of Ecological Engineering; 2019, 20, 4; 127-135
2299-8993
Pojawia się w:: Journal of Ecological Engineering
Dostawca treści:: Biblioteka Nauki

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