Wyniki wyszukiwania - Biblioteka Nauki

1

Cofka - definicje, wątpliwości, propozycje

100%

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2012

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tom Nr 4

154-157

PL

Podano różne definicje cofki występujące w źródłach. Przedstawiono sieć rzeczną dolnej Odry i omówiono wyniki pomiarów przepływów prowadzonych w obszarze tej sieci, związanych ze zjawiskiem cofki. Zaproponowano nową, podstawową klasyfikację różnych rodzajów cofek.

EN

The article quotes different definitions of backwater, appearing in source materials. It presents the lower Oder river network and discusses results of flow measurements carried out in the area of the network and related to the backwater phenomenon. It presents a new, basic classification of different types of backwater.

2

Wpływ zastosowania głębokości średniej zamiast promienia hydraulicznego na wyniki obliczeń strumienia rumowiska w dolnej Odrze

100%

Roszak A.

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2012

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tom Nr 2

64-67

PL

W artykule przedstawiono metodę Ackersa-White′a obliczania natężenia strumienia rumowiska w rozwidleniu rzecznym oraz zastosowanie zamiany promienia hydraulicznego głębokością średnią do obliczeń rumowiska wg tej metody. Wyniki obliczeń dla węzła Widuchowa na Odrze przedstawiono w formie wykresów. Ujściowy odcinek Odry jest złożony z licznych węzłów hydraulicznych: rozwidleniowych i połączeniowych, z największym w Widuchowej. W tym miejscu Odra rozdziela się na Odrę Zachodnią i Odrę Wschodnią. Następuje tu proces rozdziału wód i rumowiska; ma on złożony przebieg, gdyż oprócz bilansowania przepływu wody i strumienia rumowiska w przekrojach położonych w pobliżu samego rozwidlenia [5, 11], sortuje się rumowisko, może się zmieniać szorstkość koryta [6], oraz spadki zwierciadła wody [12]. W węzłach takich potrzebna jest ocena intensywności transportu rumowiska z podziałem na poszczególne koryta. Na ujściowym odcinku Odry prowadzę badania dotyczące ruchu wody i rumowiska w węzłach. Z uwagi na złożone warunki hydrauliczne w węzłach obliczenia realizowane są według złożonych schematów obliczeniowych, przez co ich realizacja staje się uciążliwa. W miarę rozbudowy programu obliczenia trwały bardzo długo, często program "zawieszał się". Jedną z prób uproszczenia obliczeń jest zastąpienie promienia hydraulicznego głębokością średnią. Część specjalistów uważa, że uproszczenie to można stosować dla koryt o szerokości większej od 10 głębokości [4], inni, że przy szerokości większej od 30 głębokości [3]. Przekroje Odry, Odry Wschodniej i Odry Zachodniej w rejonie Widuchowej są zaliczane do przekrojów o dużej szerokości w porównaniu do głębokości (B>>30 h), czyli spełniony jest ten warunek. ■ Obliczanie natężenia strumienia rumowiska Do analizy wpływu zamiany promienia hydraulicznego głębokością średnią na dokładność obliczania natężenia strumienia rumowiska wybrano metodę Ackersa-White′a [1]. Uwzględnia ona istotne pa[...]

EN

The article presents the Ackers-White method of the sediment stream calculation in the river bifurcation and the impact of the hydraulic radius replacement with average depth in calculating river load according to this method. The results of calculations for the Widuchowa node on the Oder river are presented in form of graphs.

3

Physico-Chemical Parameters Determining the Variability of Actually and Potentially Available Fractions of Heavy Metals in Fluvial Sediments of the Middle Odra River

100%

Ibragimow A. , Walna B. , Siepak M.

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tom Vol. 39, no. 2

3--16

EN

The occurrence of heavy metals (Cd, Cr, Cu, Ni, Pb, Zn) has been determined in the fluvial sediment samples collected along three transects in the Middle Odra River (western Poland) with a width of 360 m. The total concentrations of the metals were obtained after HNO3 microwave digestion and the available fractions of heavy metals were determined by single extraction procedures using two extractants: 0.01M CaCl2 and 0.05M EDTA. The measurement of physico-chemical parameters was also performed. The determination of total and available fractions of heavy metals, except potential available fractions of Cr, revealed high concentrations of studied elements detected in the sediment samples characterized by high content of coarse and very coarse-grained sand fraction and high content of organic matter. It was found that the concentrations of total and available fractions of metals could increase along with the content of organic matter, Eh values and concentrations of H+. Apart from the above, those concentrations become the lowest, the higher the content of medium grain size fractions is. Furthermore, the amounts of CaCl2 and EDTA extractable metals increase in the sediments samples characterized by the lowest total and available concentrations of heavy metals.

4

Frequency and strength of storm surges in the Oder River estuary area

100%

Kowalewska-Kalkowska H.

Acta Scientiarum Polonorum. Formatio Circumiectus

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2018

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tom 17

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nr 3

EN

The aim of the study was to estimate the frequency and strength of storm surges in the Oder River mouth area during the 1993/94–2016/17 seasons. The analyses involved water level readings recorded at gauges located in the Oder River mouth area, including the coasts of the Pomeranian Bay (Zatoka Pomorska) and the Szczecin Lagoon (Zalew Szczeciński), as well as the downstream reach of the Oder. Recognition of temporal and spatial water level variations in the region under investigation revealed signicant irregularities in storm surge occurrence; periods with an increased frequency of surges followed long periods with their scant occurrence. During the year, most of the storm events were observed between November and January. In the period discussed, the most severe and extensive storm surge in the Oder River mouth area was observed in October 2009. Very high surges were recorded in November 1995, January 2012, and January 2017. The long-lasting and extensive high water events in the downstream reach of Oder River resulted from the progressive and prolonged increase in sea level in the Pomeranian Bay. Long-term persistence of high water levels in the Oder River mouth area were also registered when storm surges limited the outflow of the Oder River during snow-melt events, ice jams developing on the lower Oder at the same time. Finally, severe storm events were observed under the condition of the increased water volume in the Baltic Sea.

PL

W pracy oszacowano częstość występowania i intensywność wezbrań sztormowych w ujściowym rejonie Odry w sezonach 1993/94–2016/17. Analizę przeprowadzono w oparciu o serie pomiarowe stanów wody, odczytanych na stacjach położonych wzdłuż dolnego biegu Odry oraz u wybrzeży Zatoki Pomorskiej i Zalewu Szczecińskiego. Rozpoznanie czasowej i przestrzennej zmienności stanów wody w rejonie badań wykazało znaczną nieregularność występowania wezbrań sztormowych. Po długich okresach o znikomej częstotliwości wezbrań rejestrowano okresy o nasilonym ich występowaniu. W przebiegu rocznym wezbrania najczęściej notowano od listopada do stycznia. Najrozleglejsze wezbranie sztormowe w ujściowym rejonie Odry zaobserwowano w październiku 2009 r. Bardzo wysokimi wezbraniami okazały się wezbrania z listopada 1995 r., stycznia 2012 r. oraz stycznia 2017 r. Wysokim i długotrwałym wezbraniom, o dalekim zasięgu oddziaływania w górę dolnej Odry, sprzyjał stopniowy i długotrwały wzrost poziomu morza u wybrzeży Zatoki Pomorskiej. Intensyfikacji wezbrań w ujściowym rejonie Odry sprzyjało ponadto wystąpienie wezbrań sztormowych podczas zwiększonego zasilania ze zlewni Odry, w okresie występowania zjawisk lodowych na dolnej Odrze oraz przy podwyższonym poziomie Morza Bałtyckiego.

5

Ograniczenie zanieczyszczenia wód rzeki Odry w wyniku realizacji inwestycji ochronnych objętych programem szybkiego działania

100%

Dubicki A. , Florczyk-Gołowin H.

Zeszyty Naukowe Politechniki Białostockiej. Inżynieria Środowiska

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2003

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tom Z. 16, t. 1

54--58

PL

Na tle założeń Programu szybkiego działania nad ochroną Odry przed zanieczyszczeniem przedstawiono ocenę stanu realizacji inwestycji ochronnych w zakresie punktowych komunalnych i przemysłowych źródeł zanieczyszczeń, których zakończenie przewidziane było do końca 2002 roku. Oparta na bezpośredniej inwentaryzacji ocena stanu zaawansowania prac związanych z budową oczyszczalni miejskich i przemysłowych w latach 1997- -2002 określa zakres zrealizowanych zamierzeń inwestycyjnych oraz uzyskane efekty mierzone: wielkością zredukowanych ładunków zanieczyszczeń (w odniesieniu do wskaźników BZT5, Ncał, Pcał i ChZTCr) i zaobserwowaną poprawą jakości wód rzeki Odry.

EN

On the background of "Quick Reaction Programme for Odra protection against pollution" the assessment of the protection investment realization status for urban and industrial point pollution sources due to finish by the end of 2002 is presented. Opinion of the work status associated with urban and industrial waste water treatment plant in years 1997-2002 was based on directional cataloguing and defined progress range together with obtained results: waste load reduction value (with reference to BZT5, Ntotal, Ptotal, ChZTCr) and observed Odra river water quality improvement.

6

Analysis of bottom position changes in a lowland river on the basis of sediment transport

100%

Coufal R. , Meyer Z.

Archives of Hydro-Engineering and Environmental Mechanics

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2001

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tom Vol. 48, nr 3

7-16

EN

The paper present an analysis of changes in the Odra River bed position, which is based upon the evaluations of intensity of the sediment transport rate, which is spe-cified by the modified Ackers-White's method. The case of flow between groins and the change of hydraulic conditions has been presented for the newly designed longit-udinal dam. The analyses were carried out for different flow intensities, comparing the results achieved with the measurement in the Hohensaaten-Bielinek section.

7

Near-bottom fluxes and composition of suspended matter in the Pomeranian Bay

88%

Laima M. J. , Lund-Hansen L. C. , Pazdro K. , Christiansen C. , Emeis K. C.

Oceanologia

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1999

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tom No. 41 (3)

335-353

EN

The quality and composition of suspended organic matter in near-bottom fluxes was determined at a mooring station (Odas Tonne) 20 km north-north-west of the Odra river mouth from June to December 1997. Salinity data and high concentrations of suspended matter near the bottom showed that the material entering the Pomeranian Bay from the Odra flood was recognisable for about three weeks. Vertical sediment fluxes, however, were low ~ 40 g m-2 d-1 compared to those measured later in the year ~ 60 g m-2 d-1. On the other hand, average molar CNP ratios in sediment trap material decreased from June to December 1997. These results may have been a combined effect of dilution and material transport in a layer close to the sediment surface. Fluff layers sampled at Odas Tonne in August 1997 contained a very high proportion of branched fatty acids of bacterial origin, indicating high rates of bacterial degradation. Long-chain fatty acids indicated an origin from higher terrestrial plants. The saturated fatty acid content was high in the surface sediment and the traps, increasing towards the top trap. The percentage composition of fatty acids indicated that the lowest trap was fed mainly by material from the underlying sediment. Low salinities, variability in molar ratios for major elements, higher than usual bacterial activities and detection of fatty acids characteristic of land plants during the June-August deployment show a relationship with the Odra flood of summer 1997.

8

Transport of the Odra river waters and circulation patterns in the Pomeranian Bay

88%

Beszczyńska-Möller A.

Oceanologia

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1999

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tom No. 41 (3)

279-308

EN

During several cruises of r/v 'Oceania' in different seasons of 1993-1997 detailed investigations of the Pomeranian Bay were carried out with particular attention to the vicinity of the Odra river mouth. On the basis of CTD soundings as well as quasi-continuous profiling by means of a towed CTD probe, the thermohaline fields were analysed in order to determine the pattern of riverine water transport. The characteristic flow paths under different meteorological conditions were identified, Ekman transport of freshened waters being found to prevail along the coasts of the Pomeranian Bay. Physical phenomena such as the pulsating outflow of the river Odra and the formation of isolated plumes of freshened water were observed. The vertical and horizontal extents as well as the lifetime and speed of movement of the plume-like structures were estimated. A typical plume was a few km in diameter and there were steep horizontal and vertical salinity gradients at the boundaries. As the plume moved away from the mouth, it was transformed and finally vanished. There was strong wind mixing and entrainment into underlying, more saline water at some distance from the channel mouth. Hydrological fronts between riverine and ambient waters frequently formed. Numerous intrusions were found in the temperature and salinity profiles in the frontal zones. The freshwater fraction in the entire volume of the bay waters was estimated for different hydrological situations, the highest values being obtained for the period following the flood event of summer 1997. Under favourable wind conditions, dense, saline waters flowing in from the Arkona and Bornholm Deeps were present in the near-bottom layer at the edges of the bay. Anomalously, waters of higher salinity were found in the Pomeranian Bay in November 1997 as a result of a minor inflow from the Danish Straits.

9

Uszkodzenia i naprawa kratowego mostu drogowego nad rzeką Odrą w Oławie

88%

Rabiega J. , Zając T. , Wodyński R.

Archiwum Instytutu Inżynierii Lądowej

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2009

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tom Nr 5

185-196

EN

The bridge along provincial road no. 396 is the only way in Oława to cross the Odra River. It is a there span truss structure with roadway connected to bottom flange. On the 8th of September 2008 a truck collided into the main girder and caused damages and the bridge needed to be close to traffic. The structure was examined, repaired and after proof load tests opened to traffic. Details of the repairing process are presented.

10

The inflow of 234U and 238U from the River Odra drainage basin to the Baltic Sea

88%

Skwarzec B. , Tuszkowska A. , Boryło A.

Oceanologia

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2010

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tom No. 52 (4)

705-725

EN

In this study the activity of uranium isotopes 234U and 238U in Odra river water samples, collected from October 2003 to July 2004, was measured using alpha spectrometry. The uranium concentrations were different in each of the seasons analysed; the lowest values were recorded in summer. In all seasons, uranium concentrations were the highest in Bystrzyca river waters (from 27.81 š 0.29Bq m-3 of 234U and 17.82 š 0.23 Bq m-3 of 238U in spring to 194.76 š 3.43 Bq m-3 of 234U and 134.88 š 2.85 Bq m-3 of 238U in summer). The lowest concentrations were noted in the Mała Panew (from 1.33 š 0.02 Bq m-3 of 234U and 1.06 š 0.02 Bq m-3 of 238U in spring to 3.52 š 0.05 Bq m-3 of 234U and 2.59š 0.04 Bq m-3 of 238U in autumn). The uranium radionuclides 234U and 238U in the water samples were not in radioactive equilibrium. The 234U / 238U activity ratios were the highest in Odra water samples collected at Głogów (1.84 in autumn), and the lowest in water from the Noteć (1.03 in winter and spring). The 234U / 238U activity ratio decreases along the main stream of the Odra, owing to changes in the salinity of the river's waters. Annually, 8.19 tons of uranium (126.29 G Bq of 234U and 100.80 G Bq of 238U) flow into the Szczecin Lagoon with Odra river waters.

11

Die Modernisierung der Flussdeiche auf der Lubusen Strecke der Oder

88%

Bobowska A. , Kolodziejczyk U.

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nr 12[131]

12

Precipitation extremes during flooding in the Odra River Basin in May-June 2010

88%

Szalinska W. , Otop I. , Tokarczyk T.

Meteorology Hydrology and Water Management. Research and Operational Applications

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2014

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tom 02

|

nr 1

EN

Flooding in East-Central Europe in May and June 2010 also affected the Odra River Basin. Unlike a typical summer flood scenario, in 2010 intensive precipitation was observed as early as May. Also, the location of the most intensive rainfall shifted to the catchments of the right bank tributaries of the Odra River. This paper presents the climatological assessment of the precipitation totals that caused two flood waves on the Odra River. The assessment was carried out with the use of selected indicators: monthly precipitation totals, daily precipitation totals, number of days exceeding given precipitation levels, number of days with precipitation of a given probability of exceedance and intensity, duration and accumulation of precipitation for a number of consecutive wet days. The reference values for climatological indicators were developed for the period 1966-2009. The values of the selected indicators were analyzed in terms of flood hazard in relation to the hazard gradation. The results show that the observed precipitation had the character of an extreme event with respect to its magnitude, duration and spatial extent. The catchments with recognized high levels of flood hazard were affected by the flood wave. The flood situation caused by the extreme precipitation was evaluated in the context of the largest floods in this region during recent decades.

13

Real-time forecasting of water levels using adaptive neuro- fuzzy systems

88%

Gautam D. K. , Holz K. P. , Meyer Z.

Archives of Hydro-Engineering and Environmental Mechanics

|

2001

|

tom Vol. 48, nr 4

3-21

EN

Real-time forecasting of high water levels at the mouth section of the Odra river is important for the safety conditions of shipping, shipyard works, river banks pro-tection, flood control and overall management of aquatic environment in the area. While numerical hydrodynamic models offer one possible solution, such models require forecasting of all boundary conditions and forcing data, calibration of model parameters and are often too complex and time consuming. These models are not very suitable for real-time forecasting where fast solutions are required to provide ad-equate lead time. Simpler approaches offered by artificial intelligence methods such as artificial neural networks and fuzzy rule-based systems are thus becoming more attractive and promising alternatives. These methods provide a fast, sufficiently good and low-cost solution. In this paper, an application of Adaptive-Network-Based Fuzzy Inference System (ANFIS) is presented for real-time forecasting of water levels at Police on the mouth section of the Odra river.

14

The growth rate and condition of asp Aspius aspius [L., 1758] from Miedzyodrze waters

88%

Kompowski A. , Neja Z.

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2003

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nr 3

15

Polychlorinated biphenyls in the sediments of the Odra River and its tributaries

88%

Rodziewicz M. , Kaczmarczyk A. , Niemirycz E.

Polish Journal of Environmental Studies

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2004

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tom 13

|

nr 2

EN

This paper presents the results of polychlorinated biphenyls (PCBs) determination in sediments from different sites of the Odra River and its tributaries, collected in 1998-2002. It was found that concentrations of PCBs varied significantly. The results of individual congeners show that contents of PCBs 180 and 138 were the highest in the sediments investigated. For better identification of places most polluted by PCBs, PCB contents on TOC (total organic carbon) basis in surface sediments are presented.

16

Dendroflora of the planned 'Bieliszowskie Legi' Reserve situated along the Odra River in the region of Lower Silesia

88%

Polowczyk A. , Polowczyk J. , Wronska-Pilarek D.

Acta Scientiarum Polonorum. Silvarum Colendarum Ratio et Industria Lignaria

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2007

|

tom 06

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nr 1

17

Ion exchange-ultrafiltration integrated process as a useful method in removing natural organic matter from water

75%

Kabsch-Korbutowicz M. , Kozak A. , Krupińska B.

Environment Protection Engineering

|

2008

|

tom Vol. 34, nr 2

79-93

EN

The experiments conducted are focused on natural organic substances, removal from water in ion-exchange process, ultrafiltration process and ion exchange-ultrafiltration integrated process. The water from the Odra River and model solution were investigated. In treatment processes, various doses of 5 anion-exchange resins as well as polyethersulphone membranes with different cut-offs were used. The efficiency of process was determined by measuring a decrease both in the colour intensity and the UV 254 nm absorbance. The results show that separation efficiency in integrated process depends on resin dose added to water before ultrafiltration and on the membrane cut-off as well. Among the resins tested the most efficient was MIEX ® resin. The ion-exchange process carried out prior to the ultrafiltration increased, especially for high cut-off membranes, NOM retention and resulted in the decrease of membrane fouling intensity.

PL

Usuwano naturalne substancje organiczne z wody w procesach: wymiany jonowej, ultrafiltracji i zintegrowanego procesu wymiany jonowej-ultrafiltracji. Do badań użyto wodę z Odry i roztwór modelowy będący mieszaniną wody wodociągowej i wody z torfowiska. Badania przeprowadzono dla 5 typów żywic jonowymiennych. Testy ultrafiltracji wykonano, używając membran z polietersulfonu 0 cut-off 5, 10 i 30 kDa. Skuteczność procesu określano, mierząc zmniejszanie się intensywności barwy i absorbancji UV 254 nm. Otrzymane wyniki pokazały, że dla membran o cut-off 30 kDa ultrafiltracja poprzedzona wymianą jonową zwiększa skuteczność usuwania naturalnych substancji organicznych oraz ogranicza intensywność blokowania membran. Spośród testowanych żywic najskuteczniejsza zarówno w procesie samodzielnym, jak i w układzie zintegrowanym była makroporowata żywica MIEX®.

18

The runoff of nitrogen and phosphorus compounds from selected agricultural regions in the Vistula and Odra drainage basins

75%

Taylor R.

|

tom 18

19

Food composition and selectivity of juvenile perch (Perca fluviatilis L.) against food resources in the mouth of the Odra River

75%

Wolska M. , Mazurkiewicz-Zapalowicz K. , Formicki K.

Electronic Journal of Polish Agricultural Universities. Series Fisheries

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2016

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tom 19

|

nr 1

20

Application of neural networks for the prediction of total phosphorus concentrations in surface waters

75%

Mozejko J. , Gniot R.

|

2008

|

tom 17

|

nr 3

363-368

EN

This paper describes the application of artificial neural networks (ANNs) for the time series modeling of total phosphorous concentrations in the Odra River. Data from the monitoring site Police in the lower part of the Odra were used for training, validating and testing the models. Two models are proposed to prove the satisfactory forecast of phosphorus concentrations: a simpler one with a single input variable and a more complex one with 14 input variables. Both ANN models show a high ability to predict from the new data set. On the basis of sensitivity analysis the relationships between phosphorus concentrations and other water quality variables were established.