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Wyszukujesz frazę "erosion gullies" wg kryterium: Temat

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    Wyświetlanie 1-5 z 5
    Tytuł:
    The development of ephemeral gullies in cultivated areas of Wiśnicz Foothills, Poland
    Autorzy:
    Święchowicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/295200.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    ephemeral gullies
    rill erosion
    soil erosion
    Wiśnicz Foothills
    Polska
    Opis:
    Ephemeral gullies most frequently form and develop on cultivated slopes in natural drainage lines or they are associated with man-made agricultural activities like field borders, furrows, tractor traces and cart roads. The paper presents the results of ephemeral gullies studies carried out in hydrological years 1998-2009 on cultivated slopes in the Wiśnicz Foothills. Ephemeral gullies usually form and develop during single rain or several subsequent rains of high erosivity (of several hundred MJ mm ha-1 h -1) on long cultivated slopes, particularly at the beginning of vegetation period, when most slopes are devoid of vegetation cover or plants are in the inicial stage of growth.
    Źródło:
    Landform Analysis; 2011, 17; 209-214
    1429-799X
    Pojawia się w:
    Landform Analysis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sediment transport along the gullies in flysch badlands : an example from SW Slovenia
    Autorzy:
    Zorn, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/295196.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    badlands
    gullies
    erosion processes
    flysch
    Istria
    Slovenia
    Opis:
    Sediment transport along erosion gullies in flysch badlands under Sub-Mediterranean climate is presented. Presented are weekly measurements, compiled measurements by months, as well as correlations of sediment transport with selected weather data. Sediment transport was measured up to 19 kg m-2 and was largely dependent on special weather conditions.
    Źródło:
    Landform Analysis; 2011, 17; 229-235
    1429-799X
    Pojawia się w:
    Landform Analysis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Gullies development in afforested slopes in Southeastern Spain
    Autorzy:
    Ruiz-Sinoga, J. D.
    Romero-Díaz, A.
    Belmonte-Serrato, F.
    Alonso-Sarría, F.
    Powiązania:
    https://bibliotekanauki.pl/articles/295162.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    afforestation
    gullies
    erosion rates
    marls
    semi-arid region
    Spain
    Opis:
    In semiarid regions, the main purpose of afforestation has been to provide a protective vegetative cover in order to prevent or reduce soil erosion. This paper shows the results of a study carried out in some areas afforested in the 1970s, in steep slopes and mostly in marls. Afforestation where performed using terraced with subsoiling, so the existing scrub vegetation was removed and Pinus halepensis was planted. The main conclusion is that human action developed in this semi-arid territory, perhaps because the technique applied was not the most suitable for afforestation, has led to the geomorphological activation of the slopes and the emergence and large development of gullies.
    Źródło:
    Landform Analysis; 2011, 17; 173-176
    1429-799X
    Pojawia się w:
    Landform Analysis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geomorphic dynamics of gullies developed in sandy slopes of Central Spain
    Autorzy:
    Lucía, A.
    Martín-Duque, J. F.
    Laronne, J. B.
    Sanz-Santos, M. A.
    Powiązania:
    https://bibliotekanauki.pl/articles/294675.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    sand
    gullies
    Terrestrial Laser Scanner (TLS)
    Reid bedload sampler
    erosion-runoff plots
    Spain
    Opis:
    Gullies developed on sandy lithologies are scarce. Such landforms have developed in the sandy deposits of the Cretaceous 'Utrillas' facies within the Segovia province of Central Spain. They appear at the slopes of a group of mesas and cuestas located at the edge of the northern piedmont of the Guadarrama Mountains of the Spanish Central System. The activity of the different geomorphic processes acting in these gullies, as well as their connectivity, are being characterized and quantified. This study was preceded by reconnaissance methods, whereas presently technologically advanced and more accurate techniques are being utilized. The new methods are applied in an experimental catchment (1.26 ha). They include: i) an automatic Reid-type (formerly termed Birkbeck) slot bedload sampler for continuous monitoring of bedload flux and for continuous sampling of bedload; siphons for sampling the suspended load; and a Parshall flume to monitor water discharge. Jointly, these instruments allow to study the fluvial dynamics at the catchment mouth; ii) topographic surveys undertaken by a Terrestrial Laser Scanner (TLS) to quantify the activity of gravitational, overland flow and fluvial processes in different sediment source areas within the gully basin; iii) micro runoff and erosion plots to monitor the infiltration and erosive response of different Hydrologic Response Units (HRU) comprising the interior of the catchment. This ensemble of novel methods has started providing patterns of sediment movement within the gully system.
    Źródło:
    Landform Analysis; 2011, 17; 91-97
    1429-799X
    Pojawia się w:
    Landform Analysis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Distribution and development of gullies in Southern East Siberia (Russia)
    Autorzy:
    Ryzhov, Y. V.
    Kobylkin, D. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/295172.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    gully erosion
    degree of frequency and density of gullies
    south of East Siberia
    gully development
    Opis:
    Large catchment basins (the Yenisei, Angara, Lena, Selenga, and Amur) within southern East Siberia are characterized by weak gully dissection, and by a very uneven distribution of gullies.The varied natural conditions, combined with anthropogenic impacts, produce a highly mosaic pattern in the spatial distribution of gullies.For the last 230-300 years, four intensification stages of gully erosion were identified, which were associated with periods of abrupt changes in nature management.The growth rates of the gully heads in different areas of southern East Siberia vary from 0.1 to 26 m yr-1, the mean long-term linear growth rates of gullies are 0.5–2.5 m yr-1.Extreme meteorological phenomena: torrential rains (over 30 mm hr-1), abundant rains (over 50 mm day-1), and rapid snow thawing in the spring are responsible for gullying.
    Źródło:
    Landform Analysis; 2011, 17; 155-159
    1429-799X
    Pojawia się w:
    Landform Analysis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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