Wyniki wyszukiwania - AGRO

1

Verification of empirical formulas for calculating annual peak flows with specific return period in the Upper Vistula basin

100%

Mlynski D., Walega A., Petroselli A.

Acta Scientiarum Polonorum. Formatio Circumiectus

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2018

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tom 17

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nr 2

The study evaluated the selected empirical formulas for calculating annual peak flows with specific return period (QT ) in southern Poland. Data used in the calculations in the form of observation series of peak annual flows were derived from the Institute of Meteorology and Water Management in Warsaw and covered a multi-year period of 1986-2015. The data were statistically verified for their homogeneity, significance of monotonic trends, outliers, and equality of variance. Peak flows with set return period were estimated with a statistical method of Pearson Type III distribution and empirical formulas (area regression equation and Punzet formula). The analysis showed significant differences between QT for the investigated catchments derived from the statistical method and empirical formulas. This was evidenced by the values of mean relative errors of quantile estimation that reached 64% for the Punzet formula, and 62% for area regression equation. The obtained results indicated the need to update the empirical formulas used for calculating QT in the Upper Vistula region.

2

Hydraulic model study of Vistula estuary

88%

Tarnowski A.

Zeszyty Naukowe Akademii Rolniczej we Wrocławiu. Melioracja

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1988

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nr 31

3

Low-flow discharge deficits assessment, applying constant and variable low-flow threshold levels, as illustrated with the example of selected catchments in the Vistula River basin

88%

Tomaszewski E.

Acta Scientiarum Polonorum. Formatio Circumiectus

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2018

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tom 17

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nr 3

In the present study, we have assessed low-flow discharge deficits, and the characteristics of the low flows at a constant and variable (monthly) low-flow threshold. The low-flow truncation level was identified based on the 70th percentile from the flow duration curve (Q70%). Q95% was assumed to be the threshold for the deep low-flow discharge. Thirteen catchments in the Vistula basin, varying in size, river regime, and physico-geographical conditions, were selected for the study. The input data was a series of daily discharge data sets from the period 1951–2016, made available by IMGW-PIB (Polish Institute of Meteorology and Water Management – National Research Institute). Analyses were conducted of drought flow discharge deficit volume in absolute and relative values, and low-flow duration and deficits contributing to severe low-flows were calculated for temporal scales of months and years. Comparison of the obtained results led us to the determination of the basic factors affecting the formation of low-flow deficits, and the indication of restrictions when applying fixed and variable criteria for identifying river low-flows.

4

Variability of the runoff coefficient for selected catchments in the upper Vistula river catchment

88%

Baran-Gurgul K., Bodziony M., Kolodziejczyk K.

Acta Scientiarum Polonorum. Formatio Circumiectus

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2018

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tom 17

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nr 3

The runoff coefficient is one of the basic hydrological characteristics of the catchment. It can be determined using multiannual, periodic, or annual data measurement sequences. The variability of the runoff coefficient can be influenced by the terrain, the land cover, and the land-use in the catchment, among other things. The present study is an attempt to analyse changes in the runoff coefficient over a period of 30 years (1984–2013) for 49 gauging sections located in the Carpathian part of the Upper Vistula catchment. An additional analysis was carried out to study the impact of changes in the land cover and land-use of the catchment on the value of the runoff coefficient. Rainfall and daily flows data was made available by IMGW-PIB, whereas land cover and land-use data of the catchment come from the CORINE Land Cover system (1990, 2000, 2000, and 2012).

5

Program of hydropower potential assessment as an effective possibilities in upper vistula water region in Poland

88%

Operacz A., Grahl-Madsen M.

Acta Scientiarum Polonorum. Formatio Circumiectus

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2018

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tom 17

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nr 4

6

The influence of possible climate change on the system of reservoirs of the Upper Vistula River

88%

Napiorkowski J. J., Terlikowski T.

Geographia Polonica

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1998

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tom 71

7

Cropfield-weed communities of Northern Poland on the Eastern and Western sides of the Vistula

88%

Szmeja K.

Acta Agrobotanica

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2000

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tom 53

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nr 2

The research was carried out in the following 9 mesoregions of northem Poland, located on either side of the Vistula: Cassubian Coast, Cassubian Lakeland, Elbląg Plateaux, Górowo Plateaux, Ermelandic Plain, Iława Lakeland, Vistula Delta, Starogard Lakeland and Lower Vistula Valley. Atotal of 11 cropfield-weed communities have been distinguished and described. Those found in cereal crops included: Teesdaleo-Arnoseridetum, Papavereturn argemones, a transition community between Vicietum tetraspermae and Aphano-Matric.:arietum, AphanoMatric.:arietum, Lathyro-Melandrietum and Spergulo-Chrysanthemetum segeti. In root crops the oceurrenee was found of: Digitarietum isc.:haemii, Ec.:hinoc.:hlooSetarietum, Lamio-Veronic.:etum politae, Galinsogo-Setarietum, Fumarietum officinalis and Spergulo-Chrysanthemetum segeti. Due to the presence in the patches of most communities, especially root crop communities, of many common species, they show a number of similarities, floristie and structural.

8

Characteristics of the selected hydrological parameters of the Gulf of Gdansk in the planned area of sewage discharge from the Gdansk-Wschod sewage-treatment plant

88%

Nowacki J., Matciak M.

Oceanological Studies

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2000

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tom 29

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nr 4

9

Physical water and retaining properties of hydrogenic soil of the Vistula delta

75%

Piascik H., Smolczynski S., Orzechowski M.

Polish Journal of Soil Science

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1998

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tom 31

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nr 2

10

Zones of the ice-jam formation on the Middle Vistula River reach in relation to variable of river valley morphology

75%

Falkowski T., Popek Z.

Annals of Warsaw Agricultural University. Land Reclamation

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2000

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tom 30

77-90

11

Fish stock assessment in dam reservoirs located in the upper Vistula and Warta river catchment areas based on angling catch records

75%

Wolos A., Wisniewolski W.

Archives of Polish Fisheries

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2009

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tom 17

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nr 2

12

Thresholds and their identification in the Vistula channel, Poland

75%

Babinski Z., Koutaniemi L.

Quaestiones Geographicae

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1989-1990

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tom 15-16

13

Input of mercury compounds with the Vistula waters

75%

Brzezinska A., Bogacka T., Taylor R., Trzosinska A.

Oceanologia

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1979

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tom 11

14

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

75%

Taylor R.

Oceanologia

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1984

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tom 18

15

Last record of Palingenia longicauda (OLIVIER) (Ephemeroptera: Palingeniidae) in Poland

75%

Cios S.

Polish Journal of Entomology

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2009

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tom 78

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nr 3

The author draws attention to an angling account, concerning the 1950’ies, in which there is a reference to a big mayfly in the River Vistula. In the author’s opinion this is the last known reference pertaining to Palingenia longicauda, today an extinct species.

16

Sustainable development of the Lower Vistula

75%

Majewski W.

Meteorology Hydrology and Water Management. Research and Operational Applications

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2013

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tom 01

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nr 1

The Vistula is the Poland’s largest River. It flows from the south to the north and has its mouth in the Baltic Sea. Hydrographically the Vistula is divided into three sections: the Upper Vistula from the source to San tributary; the Middle Vistula up to the Narew tributary; and the Lower Vistula till the outlet to the sea. The Lower Vistula is 391 km in length. Along it there are several very important urban centers: Gdańsk with its harbor and container terminal, Elbląg with its harbor situated on the Vistula Lagoon, Tczew, Grudziądz, Włocławek, Płock and Warsaw, the capital of Poland. The Lower Vistula establishes part of the International Waterway E70 and E40 as it has important economic value and development potential. The Lower Vistula has important hydroenergy potential, is the source of water supply for people, industry and agriculture as well as being a very important ecological corridor. The whole length of the Lower Vistula, except for Włocławek Reservoir is included in the NATURA 2000 Program. The Włocławek hydraulic project lies along this section. It was commissioned in 1970 and has been the source of significant debate discussion between ecologists and water resources specialists. The Lower Vistula also benefits from scenic countryside and is popular for tourism and recreation. Along the Lower Vistula, a very important problem still exists in the form of flood hazard, mainly caused by ice phenomena and is also endangered by droughts. The paper begins with a short discussion about sustainable development. It then presents the current state of the management of the Lower Vistula and its catchment, its economic potential and plans for development. Possibilities regarding the construction of future hydraulic projects are also discussed, including the benefits for energy production, navigation, water supply, tourism and recreation.

17

The Vistula headwaters

75%

Punzet J.

Studia Naturae

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1998

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tom 44

9-17

18

Titanium in alluvial soils of central Vistula and Zulawy

75%

Chojnicki J.

Polish Journal of Soil Science

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2010

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tom 43

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nr 1

The average concentration of titanium in the alluvial soils of central Vistula was: 0.29% (ranging from 0.05-0.49) and from the Żuławy area 0.42% (ranging from 0.29-0.50), while in the clay fraction of all soils was: 0.43% (ranging from 0.29-0.49), respectively. The investigated soils contain natural amounts of titanium which can be accepted as a geochemical background. The element content correlates with the amount of particles < 0.02 and < 0.002 mm, Corg and Fe. Titanium showed little mobility in the gley soil-forming process andthebioaccumulation of the element in the humus horizons was not observed.

19

The Vistula River low flows in Warsaw in the 21st century

75%

Kaznowska E., Hejduk A., Kempinski C.

Acta Scientiarum Polonorum. Formatio Circumiectus

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2018

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tom 17

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nr 1

The aim of the paper is an analysis of low flows – a phenomenon of persistent low water levels and flows in the riverbed – of the Vistula River at the Warszawa-Nadwilanówka gauging station. The study concerned the beginning of the 21st century, against the 1951–2000 period. In order to determine the low flows on the daily flows hydrographs, they were cut-off by the threshold level method. According to the adopted criterion, low flows are rather rare on the Vistula in Warsaw. The longest and most severe drought in terms of outflow deficit occurred in 1951. In the last years of the studied period (2003, 2012, 2015), droughts have reached a considerable sizes, but were no greater than the low flow observed in 1951. Since 1985 no winter low flows have been recorded.

20

Changes of microbial indices of water quality in the Vistula and Brda rivers as a result of sewage treatment plant operation

75%

Walczak M.

Oceanological and Hydrobiological Studies

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2008

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tom 37

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nr 2

65-75

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