Wyniki wyszukiwania - Biblioteka Nauki

1

The influence of treated wastewater from the Lodz city agglomeration on the ice regime and water temperature of the Ner river

100%

Bartnik A. , Jokiel P.

Miscellanea Geographica. Regional Studies on Development

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2021

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tom 25

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nr 3

XX

The study attempts to answer the following question: Does human impact contribute to changes recorded in the Ner river ice regime? In replying to this question, data on water consumption in Lodz (Łódź) (a city in central Poland) in 1951-2017 were used, as well as observations of ice cover and all ice phenomena for the same period. The ice regime and water temperature of the river have changed over the past 70 years. The changes result not only from changes caused by global warming but also from additional fluctuations in this temperature as determined by changes in the quantity and quality of wastewater discharged into the river from the Lodz city agglomeration. The frequency of ice phenomena in the river decreased, and their duration dropped by almost half. This tendency was compounded by a decrease in number of days with ice phenomena, which in turn was caused by a rapid increase in the amount of waste and thermally polluted waters supplied from Lodz. The river water temperature has now stopped increasing. The course of the river ice regime now resembles that of a natural watercourse again.

2

Water Retention Problem in the Mountain Areas: a Case of Sola River Flows, Polish Carpathians

100%

Jaguś A.

Journal of Ecological Engineering

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2019

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tom Vol. 20, nr 11

167--177

EN

The paper considers mountain rivers, which usually feature high dynamics of hydrological phenomena. The variability of the Sola river flows in the Polish Carpathians is presented based on water-gauge measurements from the hydrological long-period of 1956-2015. The flows for the upper section of the river, where no storage reservoirs are found, were analysed. A broad range of flows was shown – from 0.59 to 1250 m3/s at a mean flow of 15.5 m3/s. It was also shown that within a year, the flows grow in the spring (thaw freshets) and summer periods (rainwater freshets). Mainly the summer freshets are dangerous, consisting in a sudden rise of the flow due to rains. This is shown by the high values of maximum flows in June and July. In the case of mountain rivers, such as the Sola river, it is necessary to undertake the actions stabilising the flows, which on the one hand have flood-prevention importance, and on the other hand protect the water resources in long dry periods. The actions should be concentrated on the proper arrangement of the catchment area, slowing down the rainwater outflow. Appropriate land use is especially important (distribution of forests, of arable and developed areas) depending on the land elevation above the sea level and inclination, as well as creation of small storage facilities.

3

A typology of hydrological periods for use in river regime studies

100%

Rotnicka J.

Quaestiones Geographicae

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1989-1990

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tom 15-16

4

Stability of high and low flow periods on European rivers

86%

Wrzesinski D.

Badania Fizjograficzne nad Polską Zachodnią. Seria A: Geografia Fizyczna

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2015

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tom 66

5

Zróżnicowanie przestrzenne i zmienność odpływu w zlewniach fliszowych na obszarze Masywu Babiej Góry

86%

Franczak P. , Hudyka M. , Buczek K. , Górnik M.

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nr 1

EN

The paper refers to spatial diversity and lability of outflow from Flysh type drainage basins. It also shows dynamics of mean and high discharge by defining the trend, the variability index and the periodicity of the hydrological parameters mentioned. The research has been taken in the partial drainage basins located in the upper drainage basin of Skawica (the streams of Czatożanka, Marków Potok, Rybny Potok, Jaworzyna) and in the upper drainage basin of Czarna Orawa (Kiczorka) at the Babia Góra slopes. The analyzed two-year period (2012–2013) has been characterized comparing to the multiannual period of 1973–2014. The hydrological and meteorological data have been obtained due to monitoring of the hydrological environment of Babiogórski National Park. The database includes the data gained from The Institute of Meteorology and Water Management research. Poland is the one of the less water-rich European countries. The unit outflow is only 5.5 dm3·s-1·km-2 (Fall 1997). The water outflow is very space and time varied through the whole country. The outflow from drainage basins of Babia Góra area is one of the biggest in Poland (about 30 dm3·s-1·km-2). The outflow index (rate of outflow?) from Babia Góra area is 88% per annum, which distinguishes this area from the Beskidy Mountains. During the winter semester the outflow index is 12.7% and during the summer semester it is 70% (Łajczak).The outflow index and the seasonal lability of the outflow from the particular Babia Góra drainage basins are very varied which is the most noticeable between the northern and southern slopes located drainage basins, however the variety is also very clear to observe from the east to the west direction. The analyzed cycle were a general low-flow period including one thaw flood within this period (2012s) and several minor floods caused by severe rainfalls (2013s). The maximum unit outflow during the flood has been noticed in Czatożanka drainage basin and the minimum unit outflow has been noticed in Kiczorka drainage basin. The highest annual average unit outflow occurred within Marków Potok, and the lowest annual average unit outflow occurred within Czatożanka. The drainage basins located at the northern slopes of Babia Góra were characterized by big seasonal outflow fluctuation between winter and summer semesters. Only at the southern slopes in the Kiczorka drainage basin the outflow was not much varied comparing the particular semesters.

6

Using hydrodynamic modelling to assess the impact of the evelopment on hydrogeological conditions in a polygenic river valley marginal zone

58%

Bujakowski F. , Falkowski T. , Wierzbicki G. , Zukowska K.

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

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2014

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tom 46

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nr 1

EN

The study area is located in the southern part of the Warsaw city agglomeration, adjacent to the Chojnowski Landscape Park. The study area is situated in the boundary zone between: (1) the bottom of the river valley reach with peat cover and (2) the Pleistocene glaciofl uvial plain on its lower level. The main aim of the study is the analysis of the investment impact on hydrogeological conditions. During the preconstruction site works on the bottom of the valley it was an earthwork constructed in order to extend the zone of the buildings in the valley area. The research method consists of fi eld works (geological drillings, piezometers constructions and observations, geodetic measurements), as well as laboratory works (sieve analysis) and hydrodynamic modelling (Visual MODFLOW, version 2009.1). The hydrogeological model performed in the study seems to became a base for the concept of the restoration of groundwater conditions.

PL

Teren badań znajduje się w południowej części aglomeracji warszawskiej (miejscowość Baniocha w powiecie piaseczyńskim) i od północy przylega do Chojnowskiego Parku Krajobrazowego. Celem artykułu jest określenie wpływu rozbudowy osiedla mieszkaniowego na dynamikę wód podziemnych w mokradłowym obszarze o niekorzystnych warunkach geologiczno-inżynierskich i jego sąsiedztwie. Pod względem geomorfologicznym teren ten jest położony na pograniczu małej doliny rzecznej wypełnionej torfami oraz niższego poziomu plejstoceńskiej równiny sandrowej. Torfy wypełniające dolinę rzeczną w związku z rozbudową osiedla mieszkaniowego zostały wykopane i zastąpione niekontrolowanymi nasypami co doprowadziło do okresowego podtapiania budynków położonych na równinie sandrowej. Badania składały się z prac terenowych (wiercenia geologiczne, instalacja piezometrów, obserwacje wahania zwierciadła wód podziemnych, pomiary geodezyjne), laboratoryjnych (sitowa analiza granulometryczna osadów pobranych z otworów wiertniczych) i modelowania hydrodynamicznego (Visual MODFLOW w wersji 2009.1). Model hydrogeologiczny stał się podstawą do opracowania koncepcji renaturyzacji i poprawy stosunków wodnych w analizowanym terenie.

7

Rozpoznawanie wpływu zmiennych parametrów przepływów w rozmywanych korytach rzek na projektowanie budowli hydrotechnicznych

58%

Naprawa S.

Acta Scientiarum Polonorum. Architectura

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2017

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tom 16

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nr 3

PL

Podano ogólne uwagi o reżimie rzecznym (przepływów) w ciekach, opisano procesy zachodzące w międzywalu rzeki w przeszłości oraz zwrócono uwagę na konieczność dokonywania ilościowej oceny skutków przemian morfologicznych rzeki, tj. ich wpływu na miarodajną wysokość zwierciadła wody w funkcji czasu w okresie eksploatacji. Opisano własną metodę badania niestabilności stanów wody oraz wielkości przepływów, wprowadzając nowe pojęcie wskaźników niestabilności stanów wody i przepływów. Nowe podejście do tych zagadnień wynika z hydrologii dynamicznej i przedstawia zmienność przepływów i stanów wody z upływem czasu w ujęciu historycznym i w przyszłości.

EN

General remarks on river regime flows are presented, the processes observed in the river channels (within the area of river flood embankments) are described. The engineer’s attention is diverted for necessity of elaboration the definite evaluation of geomorphological transformations of river channels in the past and their influence on the water levels elevations for Design Floods as the function of time during exploitation period. The author’s method for evaluation of water levels (and discharges) instability as the function of time is described. New definition for “instability factor” has been introduced for water levels and discharges. The dynamic hydrology concept approach has been applied e.g. the channel water levels (H) and discharges (Q) are presented and discussed in historical perspective.