Wyniki wyszukiwania

1

Distribution of maximum velocities and Froude numbers on a rapid hydraulic structure apron

100%

Slizowski R., Radecki-Pawlik A.

Electronic Journal of Polish Agricultural Universities. Series Environmental Development

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2000

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tom 03

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nr 1

2

Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik

Report on the development of the Vistula River plume in the coastal waters of the Gulf of Gdańsk during the May 2010 flood

84%

Zajaczkowski M., Darecki M., Szczucinski W.

Oceanologia

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2010

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tom 52

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nr 2

311-317

The hydrological conditions, suspended matter concentrations and vertical par- ticulate matter flux were measured as the River Vistula flood wave (maximum discharge) was flowing into the southern part of the Gulf of Gdańsk on 26 May 2010. Extending offshore for several tens of kilometres, the river plume was well stratified, with the upper layer flowing away from the shore and the near-bottom water coastwards.

3

Hydromechanics of the waste- and heated-water discharge to the marine environment, and related problems

84%

Zeidler R.

Oceanologia

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1975

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tom 05

4

Development of toxin-producing cyanobacteria during the water level manipulation in a shallow heavily modified lake

84%

Solis M., Pawlik-Skowronska B., Kalinowska R.

Oceanological and Hydrobiological Studies

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2015

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tom 44

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nr 2

5

Modelling of discharge, nitrate and phosphate loads from the Reda catchment to the Puck Lagoon using SWAT

84%

Marcinkowski P., Piniewski M., Kardel I., Gielczewski M., Okruszko T.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2013

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tom 45

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nr 2

This study presents an application of the SWAT model (Soil and Water Assessment Tool) in an agricultural, coastal catchment situated in northern Poland, draining an area of 482 km2 (the Reda catchment). The main objective of this study was calibration and validation of the model against daily discharge and water quality parameters (bi-monthly total suspended solids [TSS], nitrate nitrogen [N-NO3] and phosphate phosphorus [P-PO4] loads). Calibration and validation were conducted using the SWAT-CUP program and SUFI-2 (Sequential Uncertainty Fitting Version 2) algorithm. The Nash-Sutcliffe effi ciency, which was set as an objective function in calibration of all variables, was equal for discharge to 0.75 and 0.61 for calibration and validation periods, respectively. For TSS, N-NO3 and P-PO4 loads NSE was equal to 0.56, 0.62 and 0.53 in calibration period, and 0.22, 0.64 and –1.78 in validation period, respectively. For the calibration period all the results are satisfactory or good, while for the validation period the results for TSS and P-PO4 loads are rather poor, which is related mainly to the lack of homogeneity between calibration and validation periods. These results demonstrate that SWAT is an appropriate tool for quantifi cation of nutrient loads in Polish agricultural catchments, in particular for N-NO3. The model can therefore be applied for water resources management, for quantifi cation of scenarios of climate and land use change, and for estimation of the Best Management Practices efficiency.

6

Changes in the phytoseston of a river-lake system in Drawienski National Park

84%

Goldyn R., Szelag-Wasielewska E.

Oceanological and Hydrobiological Studies

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2004

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tom 33

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nr 2

7

The importance of fish ponds in the “Mala Wisla” River catchment (Southern Poland)

67%

Lewkowicz S., Kuczynski M., Pilarczyk M.

Oceanological and Hydrobiological Studies

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2008

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tom 37

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nr Suppl.1

8

Percid occupation of submersed riverine macrophytes: food resource partitioning between perch (Perca fluviatilis L.) and ruffe (Gymnocephalus cernuus L.)

67%

Dukowska M., Grzybkowska M., Lik J., Jurasz W.

Oceanological and Hydrobiological Studies

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2012

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tom 41

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nr 1

9

The combined approach to solving issues of the flood hazard assessment using water gauge records and spatial data

67%

Korbutiak V., Stefanyshyn D., Lahodniuk O., Lahodniuk A.

Acta Scientiarum Polonorum. Architectura

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2020

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tom 19

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nr 1

10

Urban flash flood in Gdansk, 2001

67%

Majewski W.

Annals of Warsaw University of Life Sciences - SGGW. Land Reclamation

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2008

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tom 39

Floods in urban areas cause considerable economic losses and affect many people. Measures for flood mitigation in urban areas are primarily of an engineering character, however, existing city infrastructure very often restricts the introduction of appropriate new constructions. The city of Gdańsk is situated at the mouth of the Vistula river, on the area, which forms Vistula delta. It is the most flood-prone agglomeration in Poland. Now there are three possible flood sources. The first is from the moraine hills, in case of intensive precipitation. This area was recently rapidly urbanized. The second source of fl ood is from the Gulf of Gdańsk caused by storm surges and the third is from main channel of Vistula river in case of very high discharge or ice jam. The city of Gdańsk is situated within a complicated system of rivers and channels called Gdańsk Water Node (GWN). It is influenced by the discharge of rivers flowing from the moraine hills in the west, and from possible storm surges in the Gulf of Gdańsk. In July 2001 a severe flash flood, arising for the fi rst time from the moraine hills, caused by very intensive rainfall, hit Gdańsk. In the paper description of the operation of GWN, the flood cause, run and damages are presented. Description of measures, which were proposed to mitigate infl uence of a similar flood in the future are given. These measures were proposed on the basis of detailed field measurements, hydrologic analysis, hydraulic calculations and possible hydro-engineering developments.

11

The influence of ecological factors on the abundance of different ciliated Protozoa populations in the Danube River. I. Investigation of the ecological amplitude

67%

Bereczky M. C., Nosek J. N.

Acta Protozoologica

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1993

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tom 32

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nr 1

12

The fluctuations of water level in the Odra Estuary

59%

Wisniewski B., Wolski T., Kowalewska-Kalkowska H.

Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline

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2000

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tom 04

The work presents the results of studies on hydrological and meteorological determination of water level fluctuations in the Odra Estuary. Firstly there has been found the evident continuous increase of average water level at the gauge Swinoujscie from the beginning of observational series (1811) due to eustatic changes and gradual land decreasing. Next the study revealed that seasonal fluctuations of sea level are determined by the quantity of sea basin filling which is dependent on circulation conditions. Then examined storm surges (1993-1995) emphasised the important role of sea surface distortion caused by the dynamical movement of low-pressure system. Finally there was found that circulation conditions modify relations between water discharge of the Lower Odra River and water level differences data as measured at the coastal stations of the Szczecin Lagoon and the Swina Strait. Especially during the Odra flooding events there were found statistically significant relations between them.

13

Analiza parametrów ruchu wody na odcinku ujściowym rzeki Skawinki

59%

Florek J.

Acta Scientiarum Polonorum. Formatio Circumiectus

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2012

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tom 11

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nr 2

Dopływy dużych rzek charakteryzuje znaczna zmienność warunków na ich długości. Podczas gdy odcinki górne mają nierzadko charakter potoku górskiego, ze znacznymi spadkami, podłożem kamienistym i żwirowym, wchodzące często w dolinę dużej rzeki fragmenty ujściowe charakteryzuje mały spadek, dno zbudowane z materiału drobnoziarnistego pochodzącego z wylewów odbiornika oraz kręty bieg. Zmienne, na krótkim dystansie, warunki ruchu wody i spadek stanowią wyzwanie dla bytujących tam roślin i zwierząt. Oceny stanu ekologicznego cieku, podobnie jak każdego innego ekosystemu, można w pewnym stopniu dokonać na podstawie obserwacji gatunków wskaźnikowych, tj. takich, których występowanie uwarunkowane jest złożonością procesów zachodzących na badanym obszarze i świadczy o nim pozytywnie. Wymiernym narzędziem takiego działania jest określenie parametrów ruchu wody w połączeniu z informacją o dobrej ocenie stanu cieku na podstawie obecności gatunków wskaźnikowych. Jakie parametry charakteryzują badany ciek i jaki wpływ wywiera na nie człowiek? Udzielenie jednoznacznych odpowiedzi na takie pytania wymaga analizy hydraulicznych i hydrologicznych warunków ruchu wody. Praca przestawia analizę parametrów ruchu wody na odcinku ujściowym rzeki Skawinka – tj. na obszarze zrzutu wód z elektrociepłowni – w ujęciu ilościowym i jakościowym (temperatura). Wieloletnie oddziaływanie znacznych przepływów sztucznie wywołanych wodami pochodzącymi z Wisły wpłynęło na budowę morfologiczną tego odcinka; jednocześnie w jego górnych partiach, na dopływach obserwowane są stanowiska gatunków wskaźnikowych świadczące o możliwości dobrej oceny stanu wód tego cieku. Jak pogodzić ze sobą te dwie pozornie przeciwstawne informacje, czy istnieje bezpośrednie niebezpieczeństwo dla gatunków zagrożonych i jakie parametry ruchu wody powinny być brane pod uwagę przy ocenie stanu cieku? –oto zagadnienia, które porusza opracowanie.

14

Straty filtracyjne zrzutów ze zbiornika Jeziorsko zasilających przepływy niżówkowe Warty

51%

Walczak Z., Sroka Z., Tschuschke W., Stefanek P., Wrzosek K.

Acta Scientiarum Polonorum. Formatio Circumiectus

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2017

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tom 16

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nr 4

Ograniczanie wyników

Distribution of maximum velocities and Froude numbers on a rapid hydraulic structure apron

Report on the development of the Vistula River plume in the coastal waters of the Gulf of Gdańsk during the May 2010 flood

Hydromechanics of the waste- and heated-water discharge to the marine environment, and related problems

Development of toxin-producing cyanobacteria during the water level manipulation in a shallow heavily modified lake

Modelling of discharge, nitrate and phosphate loads from the Reda catchment to the Puck Lagoon using SWAT

Changes in the phytoseston of a river-lake system in Drawienski National Park

The importance of fish ponds in the “Mala Wisla” River catchment (Southern Poland)

Percid occupation of submersed riverine macrophytes: food resource partitioning between perch (Perca fluviatilis L.) and ruffe (Gymnocephalus cernuus L.)

The combined approach to solving issues of the flood hazard assessment using water gauge records and spatial data

Urban flash flood in Gdansk, 2001

The influence of ecological factors on the abundance of different ciliated Protozoa populations in the Danube River. I. Investigation of the ecological amplitude

The fluctuations of water level in the Odra Estuary

Analiza parametrów ruchu wody na odcinku ujściowym rzeki Skawinki

Straty filtracyjne zrzutów ze zbiornika Jeziorsko zasilających przepływy niżówkowe Warty