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    Wyświetlanie 1-6 z 6
    Tytuł:
    Rola opadów ekstremalnych w denudacji stoków młodoglacjalnych na przykładzie Pojezierza Suwalskiego
    Autorzy:
    Smolska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/294869.pdf
    Data publikacji:
    2008
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    opady ekstremalne
    denudacja stoków młodoglacjalnych
    Pojezierze Suwalskie
    Źródło:
    Landform Analysis; 2008, 8; 69-72
    1429-799X
    Pojawia się w:
    Landform Analysis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Spływ wody i erozja gleby na piaszczystym stoku w obszarze młodoglacjalnym – pomiary poletkowe (Pojezierze Suwalskie, Polska NE)
    Runoff and soil erosion on sandy slope in the last-glacial area – plots measurements (Suwałki Lakeland, NE Poland)
    Autorzy:
    Smolska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/2084644.pdf
    Data publikacji:
    2010
    Wydawca:
    Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
    Tematy:
    wody powierzchniowe
    splyw wod
    erozja gleb
    pomiary poletkowe
    Pojezierze Suwalskie
    Polska Polnocno-Wschodnia
    Opis:
    The aim of the study performed in years 2007-2009 in the Suwałki Lakeland was assessed the intensity of soil erosion and runoff on a sandy slope under different cultivation. The study also focused on analysis of selected factors affecting the erosion (intensity of rainfalls, erosion susceptibility of soil, vegetation cover). Measurements were performed on the standard USLE plots inclined 8°. The mean annual erosion amounted to 0,2 t ha⁻¹ under cereals (rye and oat), 2,1 t ha⁻¹ under potatoes planted in rows parallel to the slope gradient, and 2,75 t ha⁻¹ on the black fallow. Experimentally determined index of erosion susceptibility K was 0,0041. The mean annual value of the canopy factor C was 0,064 for cereals and 0,8 for potatoes. Short rainfall events of 20-30mm and erosivity 100-200 MJ mm ha⁻¹h⁻¹ are characteristic for the study area. The results obtained for the sandy slope support previous findings that such short-term events play a significant role in soil erosion. Effectivity of such events strongly depends on the vegetation cover as they are responsible for 25-30% of soil loss under potatoes and 45-50% under cereals.
    Źródło:
    Prace i Studia Geograficzne; 2010, 45; 197-214
    0208-4589
    Pojawia się w:
    Prace i Studia Geograficzne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Zastosowanie izotopu Cs-137 do oceny erozji gleby na Pojezierzu Suwalskim
    Soil erosion assessment using Cs-137 radionuclide in the Suwalki Lakeland
    Autorzy:
    Smolska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/2084289.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
    Tematy:
    izotop 137 Cs
    ocena
    erozja gleb
    gleby
    Pojezierze Suwalskie
    zastosowanie
    obszary mlodoglacjalne
    depozycja zanieczyszczen
    Opis:
    The aim of studies was the recognition of the contemporary denudation considering tillage translocation and water soil erosion. This study was performed in the typical last glacial relief. The Cs-137 inventory was analysed along two hillslope profiles and at their footslopes. The value of soil erosion and sedimentation was calculated using the proportional model and the simplified mass balance model. Studies showed that eroded soil from upper and middle segments of the slopes was re-deposited on concave segments of the slopes. The erosion rate was 0.5-1.6 mm on the top of hills and 0.8-3.2 mm on their slopes. The deposition occurs on the concave slope at rate of 3.8-6.6 mm per year on average. Erosion-deposition balance indicate that the small part of eroded soil was exported to the valley bottom and bottom of depression. The share of the water rill and interrill erosion in the total of topsoil erosion is range from 1 to 10% depending on used model. Tillage translocation is the main process shaped a small hills in the last glacial ares.
    Źródło:
    Prace i Studia Geograficzne; 2013, 51; 91-104
    0208-4589
    Pojawia się w:
    Prace i Studia Geograficzne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cechy sedymentologiczne różnowiekowych osadów korytowych na przykładzie doliny górnej Czarnej Hańczy (Pojezierze Suwalskie)
    Sedimentological features of various age river channel deposits on the example of the upper Czarna Hancza valley (Suwalskie Lakeland)
    Autorzy:
    Ostrowska, A
    Oswiecimska-Piasko, Z.
    Smolska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/2084993.pdf
    Data publikacji:
    2003
    Wydawca:
    Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych
    Opis:
    The aim of the research carried out in the upper Czarna Hańcza valley was to explore the characteristics of channel deposits from various ages and to evaluate their significance in the process of drawing conclusions about the fluvial environment. The deposits of the contemporary Czarna Hańcza channel were analysed; the channel itself is tortuous, locally meandering, with small meanders (with the curve radius of 30 to 70 metres). The deposits of the river with large-magnitude meanders were identified using the example of the Potasznia palaeomeanders, with the curve radius of 500 metres. The deposits of the braided sandur river, providing material for both types of younger fluvial deposits, were revealed in the exposures in Potasznia and Sobolewo. An analysis of the deposits' grain size was conducted using the sieve method, and the texture indicator was determined using the Folk and Ward method (1957). To draw conclusions about the environmental dynamics and the manner of transporting deposits on the basis of sedimentological features, the relationship between the average grain diameter - Mz (on the ϕ scale) and standard variation d₁ (sorting) was used, as well as one between the grain diameter - Mz and the first centile of the grain size distribution – C, which, along with larger ones, account, respectively, for 50% and 1 % of the deposit mass (Passega 1956, Passega Byramjee 1964, Mycielska-Dowgiałło 1995). In the relationship between the average grain diameter - Mz and the standard deviation - σ₁ pattern I was better visible in all the examined deposits, in which the thicker deposits were more poorly sorted. According to Mycielska-Dowgiałło (1995), it is a characteristic feature of a dynamie channel environment. Younger series are characterised by lesser differences in the average grain diameter, accompanied by larger variations in the sediment sorting and, at the same time, a poorer degree of sorting (individual channel types represent the lines with a similar ten dency, Mz-σ₁ but having a smaller channel gradient). Pattern II could be discerned only in the current facies deposits (which until naw has not been identified in the bottom deposits of Polish rivers), in which thicker deposits are better sorted. This is channel lag deposits. Also, in the C-M diagram, most of the points representing the examined deposits can be found in field I, comprising deposits transported in traction in an environment characterised by a high dynamie activity. In the case of contemporary channel deposits, the dependence of the deposition conditions on the channel gradient could be easily visible.
    Źródło:
    Prace i Studia Geograficzne; 2003, 33; 59-70
    0208-4589
    Pojawia się w:
    Prace i Studia Geograficzne
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Charakterystyka warunków opadowych Pojezierza Suwalskiego w latach 1971-2000
    Characteristics of precipitation conditions in Suwałki Lake District in the years 1971-2000
    Autorzy:
    Banaszkiewicz, B.
    Grabowska, K.
    Suchecki, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/886793.pdf
    Data publikacji:
    2007
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    Pojezierze Suwalskie
    Suwalszczyzna
    lata 1971-2000
    niedobor opadow
    opady atmosferyczne
    roznorodnosc klimatyczna
    suma opadow
    Opis:
    The aim of this thesis was to present the characteristic of precipitation conditions in Suwałki Lake District. Analysis was made on the base of daily sum of precipitation of six meteorological stations during 1971–2000 period. Frequency of months and seasons with defi cit or excess of precipitation according to Kaczorowska’s criterion, frequency of non-precipitation day sequences >10, >15 and 20 days in the periods April–May, June– July, August–September and April–September were taken into consideration. Numbers of days with-precipitation ≥ 0.1 mm, ≥ 1.0 mm, ≥ 10.0 mm, ≥ 20.0 mm and ≥ 30.0 mm was analyzed also. All examined weather stations indicate that precipitation shortages are characteristic for the 90”s. Not only total precipitation amount indicate that, but also their classifi cation presented according to Kaczorowska as well as precipitation – free periods.
    Źródło:
    Scientific Review Engineering and Environmental Sciences; 2007, 16, 3[37]
    1732-9353
    Pojawia się w:
    Scientific Review Engineering and Environmental Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Badania sedymentologiczne współczesnych osadów deluwialnych i ich znaczenie w ocenie dynamiki procesów erozji gleby na przykładzie Pojezierza Suwalskiego
    Assessment of soil erosion processes based on sedimentological analyses of contemporary deluvial sediments on the example of the Suwalki Lakeland
    Autorzy:
    Smolska, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/887386.pdf
    Data publikacji:
    2008
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    Pojezierze Suwalskie
    erozja gleb
    osady deluwialne
    procesy erozyjne
    sklad granulometryczny
    uziarnienie
    warunki meteorologiczne
    wlasciwosci teksturotworcze
    wskaznik sedymentacyjny
    Opis:
    Research on soil erosion undertaken on selected slopes of the Suwałki Lakeland (NE Poland) in years 1986–1989, 1998–1999 and in 2007 allowed to determine features of deposits transported and deposited within the slopes. Sedimentological analyses were used and following granulometric indices calculated: mean grain size diameter, sorting and skewness. Organic matter content was also determined by loss on ignition. Size of mineral grains (Mz and d-5%) were analysed in relation to rainfall erosivity. Analyses of sediments originated from soil erosion supports previous fi ndings regarding their structural and textural features. Granulometric composition of deluvial deposits is determined by the source material – soil cover. Analysed slope deposits were medium and weakly sorted and their skewness was positive which shows similarity to the slope soil cover. Deposits originated from rill erosion had skewness varying from slightly positive to slightly negative. Rainfall erosivity weakly correlates with the size of mineral grains transported and deposited. This is explained by the fact that transported material included not only separate grains but also grain aggregates and because the material partially originated from rainsplash. Following juxtaposition of sedimentological indices: Mz-σ1, Mz-Sk1, Sk1-σ1 and also Mz with loss on ignition proved helpful in determining conditions of the erosion-transportdeposition process. Multimodal frequency curves with a low amplitude of the modes are characteristic and typical for deluvial sediment. It is found that the minimum transport distance needed for registration of the process in sedimentological properties of the deposits is 30 m. Moreover, only rainfall of a high intensity was able to modify sedimentological proporties of the deposits.
    Źródło:
    Scientific Review Engineering and Environmental Sciences; 2008, 17, 2[40]
    1732-9353
    Pojawia się w:
    Scientific Review Engineering and Environmental Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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