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    Wyświetlanie 1-6 z 6
    Tytuł:
    Content of copper and nickel in soils of Vistula river catchment
    Autorzy:
    Skorbiłowicz, E.
    Samborska, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/124869.pdf
    Data publikacji:
    2014
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    soil
    copper
    nickel
    Vistula river catchment
    Opis:
    Metal pollution attracts growing interest mainly due to their toxic effects on the entire natural environment. It is therefore necessary to monitor, not to exceed acceptable standards of elements in ecosystems. Heavy metals in soils are derived from natural and anthropogenic sources. The purpose of this article is to present the contents of copper and nickel in agricultural soils within the Vistula river catchment based on research carried out by the Institute of Soil Science and Plant Cultivation in the period since 1995 to 2010. The assessment of a degree of soil contamination by these elements according to standards has been also performed. It has been proven that about 91% of agricultural soils in Vistula river catchment shows natural (0°), while approximately 9% higher (Io) copper concentrations. It was found that in the total agricultural area of the Vistula river catchment, soils not contaminated with nickel (0°), with elevated (Io), and weakly contaminated soils (IIo) are respectively 85%, 11%, 4% of the analyzed soils area. There was a significant relationship between the content of copper and nickel in soils and such features as organic matter and pH. Analysis of results confirmed that the highly developed industrial activity affects the increased amount of pollutants in soils; the greatest accumulation occurred in soils of the upper Vistula river catchment, which is caused primarily by interaction of the Upper Silesian Industrial District.
    Źródło:
    Journal of Ecological Engineering; 2014, 15, 2; 53-59
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Basic parameters of the thermal regime of rivers in the Vistula river catchment
    Autorzy:
    Oksiuta, Monika
    Mikulska, Małgorzata
    Powiązania:
    https://bibliotekanauki.pl/articles/2034232.pdf
    Data publikacji:
    2010-06-01
    Wydawca:
    Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
    Tematy:
    thermal regime
    river water temperature
    Vistula river catchment
    Opis:
    Seasonal and multi-annual variability of river water temperature has been analysed based on data from 24 gauge stations of the IMGW network. It has been characterised by means of several values of the thermal regime parameters: mean annual, semi-annual (November-April, May-October) and amplitude. The variability of water temperature in the catchment and in the stream network has been estimated. Measurement data included seven stations at the Vistula river. On the background of natural variability, rivers or their segments have been distinguished where water temperature is impacted by anthropopressure.
    Źródło:
    Miscellanea Geographica. Regional Studies on Development; 2010, 14; 185-192
    0867-6046
    2084-6118
    Pojawia się w:
    Miscellanea Geographica. Regional Studies on Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Lower Vistula and Its Ice Problems
    Autorzy:
    Majewski, Wojciech
    Powiązania:
    https://bibliotekanauki.pl/articles/2097771.pdf
    Data publikacji:
    2021
    Wydawca:
    Polska Akademia Nauk. Instytut Budownictwa Wodnego PAN
    Tematy:
    Vistula river
    Vistula catchment
    ice formation
    ice problems in rivers
    ice floods on the Vistula
    Opis:
    In many countries of the northern hemisphere during winter period ice forms appear on various water bodies, which results in significant changes of physical, chemical and ecological conditions. These changes are different in rivers, channels, lakes or once-through reservoirs. On the terrain of Poland ice always caused considerable problems affecting intensive inland navigation and other river use. These problems appeared especially on the Vistula River, which in 17th and 18th century was one of the most navigable rivers in Europe. The Vistula is the largest Polish river, which flows from the south in the Carpathian Mountains to the Baltic Sea in the north. It is the second largest river, after Neva, of the Baltic Sea catchment. The length of the Vistula is 1047 km and its catchment amounts to 194 thousand km2. The predominant part of the Vistula river basin (87%) is now on Polish territory and the remaining (13%) catchment is in Belarus, Ukraine and Slovakia. The course of the Vistula can be divided into three distinctly different sections: upper, middle and lower. These river sections have appropriate catchments with their tributaries. There are hydraulic structures on the main river course and on its tributaries which serve navigation, hydroenergy, flood protection, water supply and recreation. All over the Vistula catchment there are frequent floods during spring and summer time resulting from excessive precipitation but in winter caused by ice phenomena. Numerous flow problems appear especially along the lower Vistula course because of ice phenomena and they result very often in severe flood problems. The Vistula has a very variable time and spatial discharge, because of existing climate conditions over its catchment. The aim of the paper is to present hydraulic and hydrologic characteristics of the Lower Vistula river with special emphasis on the management of this river section for navigation, hydroenergy, flood protection and water supply in view of ice phenomena appearing there. Information concerning changes of water characteristics due to various water temperatures are presented as well as on the formation of various forms of ice in flowing water. Numerous ice studies were carried out in Poland and especially on the Lower Vistula section as it was very ice prone and where many ice jams and ice-jam floods occurred. A special hydraulic situation existed at the mouth of the Vistula, which caused important floods in the 18th century and resulted in the construction of a special direct channel to the sea (Przekop Wisły) solving flood problems in this area. Information is presented on changes in open channel flow due to the appearance of ice cover and other ice forms. The paper includes ample information on the run, consequences and studies connected with a very important ice-jam-flood on the upper part of Włocławek reservoir in 1982.
    Źródło:
    Archives of Hydro-Engineering and Environmental Mechanics; 2021, 68, 1; 41--83
    1231-3726
    Pojawia się w:
    Archives of Hydro-Engineering and Environmental Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Polonium, uranium and plutonium radionuclides in aquatic environment of Poland and Southern Baltic
    Radionuklidy polonu, uranu i plutonu w środowisku wodnym Polski i południowego Bałtyku
    Autorzy:
    Skwarzec, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/84962.pdf
    Data publikacji:
    2009
    Wydawca:
    Akademia Pomorska w Słupsku
    Tematy:
    polonium
    uranium
    plutonium
    radionuclide
    determination
    marine trophic chain
    aquatic environment
    Polska
    Baltic Sea
    river
    Odra River
    Vistula River
    Pomeranian region
    trophic chain
    river catchment
    Opis:
    In the paper were presented the results of study for determination of natural (polonium 210Po, uranium 234U and 238U) and artificial (plutonium 238Pu, 239+240Pu and 241Pu) alpha radionuclides in aquatic environment of Poland and southern Baltic Sea as well as the recognition of their accumulation in marine trophic chain. The obtained results indicated that Vistula and Odra as well as Rega, Parsęta and Słupia are important sources of analyzed radionuclides in southern Baltic Sea. Total annual runoff of polonium, uranium and plutonium from Vistula, Odra and Pomeranian rivers to the Baltic Sea was calculated as about 95 GBq of 210Po, 750 GBq of 234+238U and 160 MBq of 238+239+240Pu. Investigation on the polonium 210Po, uranium 234U and 238U, as well as and plutonium 238Pu, 239+240Pu and 241Pu. concentration in Baltic biota revealed that these radionuclides, especially polonium and plutonium, are strongly accumulated by some species. The results indicate that the Baltic organisms accumulate polonium and plutonium from environment and the bioconcentration factors (BCF) range from 25 to 27 000. The Baltic Sea algae, benthic animals and fish concentrate uranium only to a small degree. In Baltic sediments, the concentration of uranium increases with core depth and it is connected with the diffusion of 234U, 235U and 238U from sediments via intersticial water to bottom water. The values of 234U/238U activity ratio in the sediments indicated that the possible reduction process of U(VI) to U(IV) and the removing of autogenic uranium from seawater to sediments in the Gdańsk Deep and Bornholm Deep constitutes a small part only.
    W pracy przestawiono wyniki badań nad występowaniem naturalnych (polon 210Po, uran 234U i 238U) i sztucznych (pluton 238Pu, 239+240Pu i 241Pu) radionuklidów alfa promieniotwórczych w środowisku wodnym Polski i południowego Bałtyku, jak również rozpoznanie procesu ich nagromadzania w morskim łańcuchu troficznym. Wyniki badań wykazały, że Wisła i Odra oraz Rega, Słupia i Parsęta są ważnymi źródłami analizowanych radionuklidów w południowym Bałtyku. Całkowity roczny spływ polonu, uranu i plutonu wodami Wisły, Odry i rzek Przymorza został obliczony na 95 GBq dla 210Po, 750GBq dla 234+238U oraz 166 MBq dla 238+239+240Pu. Badania zawartości polonu 210Po, uranu 234U i 238U, jak również plutonu 238Pu, 239+240Pu oraz 241Pu w organizmach bałtyckich wykazały silne nagromadzanie w nich radionuklidów, szczególnie polonu i plutonu. Wartości współczynnika nagromadzania (BCF) polonu i plutonu w organizmach południowego Bałtyku mieszczą się w szerokim przedziale wartości od 25 do 27000. Bałtyckie wodorosty i organizmy zwierzęce nagromadzają uran w niewielkim stopniu. Z kolei w osadach bałtyckich stężenie uranu wzrasta z głębokością rdzeni, co związane jest z dyfuzją izotopów 234U, 235U i 238U za pomocą wody porowej do wody naddennej. Analiza wartości stosunku aktywności 234U/238U w osadach wykazała, że możliwa redukcja U(VI) do U(IV) i usuwanie autogenicznego uranu z wody morskiej do osadów w redukcyjnych rejonach Bałtyku: Głębi Gdańskiej i Głębi Bornholmskiej zachodzi w niewielkim stopniu.
    Źródło:
    Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2009, 13 part II
    1643-0115
    Pojawia się w:
    Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Adsorptive properties of natural water surfactant films. Dead Vistula catchment water studies
    Autorzy:
    Pogorzelski, S.J.
    Kogut, A.D.
    Powiązania:
    https://bibliotekanauki.pl/articles/48236.pdf
    Data publikacji:
    2003
    Wydawca:
    Polska Akademia Nauk. Instytut Oceanologii PAN
    Tematy:
    temporal variability
    natural water
    inland water
    natural film
    surface isotherm
    scaling procedure
    spatial variability
    surfactant
    adsorption kinetics
    Vistula River
    catchment area
    Opis:
    The paper contains the results of natural film experiments carried out on inland waters in the Dead Vistula (Martwa Wisła) catchment area during 1999–2002 using the integrated Langmuir trough-Wilhelmy plate system,w hich ‘cuts out’ an undisturbed film-covered area without any physicochemical sample processing. The static film parameters result from the generalized scaling procedures applied to the surface pressure-area isotherms. They appear to correspond well to observations of the film composition (Alim, MW, Eisoth),film solubility and the miscibility of its components (via R, ΔSc and y factors),and surface concentration (πeq, Γeq). A novel approach is presented for the adsorption dynamics on the basis of the mixed kinetic-diffusion model and analyses of the dynamic surface pressure plots,whic h leads to the determination of the effective relative diffusion coefficient Deff/D and activation energy barrier Ea/RT . There is reason to believe that certain classes of film-forming components or ‘end-members’ may dominate the static and dynamic surface properties. Some of these substances can be used as source-specific surface-active biomarkers to trace temporal and spatial changes due to environmental factors or the production of biological matter. The concept was tested for the Dead Vistula river and its tributaries. The results demonstrate that natural films are a complex mixture of biopolymeric molecules covering a wide range of solubilities,sur face activities and molecular masses with an apparent structural film architecture. Such studies could lead to the development of film structure parameters – indicators of ecosystem quality and the state of the environment.
    Źródło:
    Oceanologia; 2003, 45, 3
    0078-3234
    Pojawia się w:
    Oceanologia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Exceedance probability of selected low characteristic flows in mountain catchments
    Autorzy:
    Weglarczyk, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/60762.pdf
    Data publikacji:
    2014
    Wydawca:
    Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN
    Tematy:
    exceedance probability
    low flow
    characteristic flow
    mountain catchment
    flow duration curve
    threshold value
    annual minimum flow
    maximum annual flow
    Vistula River
    Opis:
    In Polish hydrology and water management the term characteristic flow exists denoting a specific value of flow at the given cross-section of a river calculated as the long-term minimum, mean, median or maximum calculated using the annual minimum, mean, median or maximum flow taken for each year from a series of (usually) daily flows. Some of these characteristic flows are used to define the low-flow (o drought) periods while the another criterion: a percentage flow Qp taken from the long-term flow duration curve is also widely used. In the paper the study on the frequency structure the empirical exceedance probability of a given characteristic flow made for some low and average characteristic flows (SNQ, WNQ, NSQ and SSQ) is presented. The results show that the exceedance probability of a given characteristic flow is variable, and the amount of this variability may be large, as is the case of WNQ and NSQ. So assigning a characteristic flow to a single FDC quantile value Qp (as can be find in the literature) cannot be justified. Correlation analysis made for the pairs (P. , characteristic flow), ( P., catchment area) and (P. , gauging station elevation) revealed some significant correlations. Only for SNQ is not correlated at all; correlation for other characteristic flows is statistically significant for at least one of the cases. The highest correlations (greater than 0.4 in absolute values) were found for the pairs ( P, gauging station elevation) for NSQ and, for SSQ, ( P, SSQ) and ( P, catchment area).
    Źródło:
    Infrastruktura i Ekologia Terenów Wiejskich; 2014, IV/3
    1732-5587
    Pojawia się w:
    Infrastruktura i Ekologia Terenów Wiejskich
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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