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    Wyświetlanie 1-4 z 4
    Tytuł:
    Morphodynamics of small high-mountain wadis in arid zones (on the examples of the tributaries of the upper Dades River, High Atlas Mountains, Morocco)
    Autorzy:
    Dłużewski, M.
    Krzemień, K.
    Rojan, E.
    Biejat, K.
    Kokosiński, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/294915.pdf
    Data publikacji:
    2013
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    river channel morphology
    small catchments
    upper Dades River
    High Atlas, Morocco
    Opis:
    The paper reports on a study of the impact of morphology and lithology of small catchments on episodic river channel development in the southern High Atlas Mountains in Morocco. A detailed analysis focused on three catchments of small wadis featuring different relief and lithology along the upper, middle and lower course of the Dades River. The fieldwork combined with an analysis of topographic and geological maps and of satellite images concluded that the development of the river valley and channel structures was related to the main stages in the development of the landform in this part of the High Atlas. The channel dynamics were found to be typical of arid mountains, which was particularly apparent within a denudational-and-fluvial zone that reached up to 3,000 m a.s.l. The dominant morphodynamic system of this zone was pluvio-gravitational where episodic heavy rainfall events triggered fast displacement of stone mantle covers down the slopes and into the river channels. An analysis of the deposition zones in the lower channel reaches and on alluvial fans at the confluence of the side valleys and the main valley leads to the conclusion that the main factor, which determines the channel morphology is the impact of debris flows and heavily loaded streams and rivers. The deposited material is then transported outside the mountain zone and deposited within broad river channels. The development of the river channels in the three catchments depends on their order, morphometric property, slope lithology and the amount of material received from the slopes.
    Źródło:
    Landform Analysis; 2013, 22; 9-19
    1429-799X
    Pojawia się w:
    Landform Analysis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zróżnicowanie przestrzenne i zmienność odpływu w zlewniach fliszowych na obszarze Masywu Babiej Góry
    Space-time variability of river runoff in flysh catchments located in the Babia Góra Massif (Polish Outer Carpathians)
    Autorzy:
    Franczak, Paweł
    Hudyka, Michał
    Buczek, Krzysztof
    Górnik, Marek
    Powiązania:
    https://bibliotekanauki.pl/articles/1376003.pdf
    Data publikacji:
    2015
    Wydawca:
    Uniwersytet Marii Curie-Skłodowskiej. Wydawnictwo Uniwersytetu Marii Curie-Skłodowskiej
    Tematy:
    small catchments
    hydrology
    river regime
    Skawa catchment Carpathians
    Karpaty
    hydrologia
    reżim rzeczny
    Opis:
    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.
    Źródło:
    Annales Universitatis Mariae Curie-Sklodowska, sectio B – Geographia, Geologia, Mineralogia et Petrographia; 2015, 70, 1; 95-116
    0137-1983
    Pojawia się w:
    Annales Universitatis Mariae Curie-Sklodowska, sectio B – Geographia, Geologia, Mineralogia et Petrographia
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Modelling of long term low water level in the mountain river catchments area
    Autorzy:
    Kopacz, Marek T.
    Kowalewski, Zbigniew
    Santos, Luis
    Mazur, Robert
    Lopes, Vasco
    Kowalczyk, Agnieszka
    Bar-Michalczyk, Dominika
    Powiązania:
    https://bibliotekanauki.pl/articles/2048521.pdf
    Data publikacji:
    2021
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    land use changes
    low water level
    nitrogen load
    phosphorus load
    small mountain catchments
    Opis:
    Changing atmospheric conditions, including above all the deepening extreme weather phenomena, are increasing from year to year. This, in consequence, causes an increase in the incidence of low outflows. The study compares low water levels for two catchments: Biała Woda and Czarna Woda, and phosphorus and nitrogen load using the Nutrient Delivery Ratio (NDR) model in InVEST software. The objective of the NDR is to map nutrient sources from catchment area and transfer to the river bed. The nutrient loads (nitrogen and phosphorus) spread across the landscape are determined based on a land use (LULC) map and associated loading rates described in literature. The studies have shown that low water levels have been more common recently and pose the greatest threat to the biological life in the aquatic ecosystems. The structure of land use is also of great importance, with a significant impact on the runoff and nitrogen and phosphorus load. Phosphorus and runoff from surface sources to the water of Biała Woda and Czarna Woda catchments area has been reduced in forested areas. Only higher run-offs are observed in the residential buildings zone. The nitrogen load was also greater in the lower (estuary) parts of both catchments, where residential buildings dominate.
    Źródło:
    Journal of Water and Land Development; 2021, 51; 225-232
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Udział dopływu gruntowego w bilansie wodnym nawadnianych podsiąkowo użytków zielonych w małej dolinie rzecznej
    Contribution of groundwaters to the water balance of sub irrigated grasslands in a small river catchment
    Autorzy:
    Jurczuk, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/338384.pdf
    Data publikacji:
    2008
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    bilans wodny
    dopływ gruntowy
    małe doliny rzeczne
    nawodnienia podsiąkowe
    ground water input
    small river catchments
    sub-irrigation
    water balance
    Opis:
    W pracy przedstawiono 4-letnie wyniki badań z lat 2002-2006 nad bilansem wodnym nawadnianego obiektu melioracyjnego. Badania prowadzono na obiekcie Wir, stanowiącym fragment doliny Wiązownicy, w gminie Potworów, w województwie mazowieckim. Pomiary składników bilansu wodnego: dopływu i odpływu powierzchniowego, opadów, retencji glebowej i powierzchniowej oraz wyniki obliczeń ewapotranspiracji, uzyskane na podstawie danych meteorologicznych i pomiarów plonowania użytków zielonych na obiekcie, umożliwiają oszacowanie dopływu gruntowego do doliny. Wyniki badań świadczą, że w małej dolinie rzecznej jest on bardzo zróżnicowany w poszczególnych latach i występuje głównie w pierwszym odroście traw.
    Results of a 4 years long (2002-2006) study on water balance in an irrigated reclamation object are presented in this paper. Studies were carried out in the Wir object - part of the Wiązownica River valley, Potworów commune, Masovian Province. Measurements of water balance elements like surface in- and outflow, precipitation, soil and surface water retention and the results of calculation of evapotranspiration based on meteorological data and measured grassland yielding allowed for estimating groundwater input to the valley. Results of this study show that the groundwater input varies between years and occurs mainly during the first grass regrowth.
    Źródło:
    Woda-Środowisko-Obszary Wiejskie; 2008, 8, 1; 127-142
    1642-8145
    Pojawia się w:
    Woda-Środowisko-Obszary Wiejskie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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