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Wyszukujesz frazę "loess gully erosion" wg kryterium: Temat

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    Tytuł:
    Geologiczno-inżynierskie i geomorfologiczne uwarunkowania erozji wąwozowej w lessach w rejonie Kazimierza Dolnego (wąwóz Opolska Droga)
    Engineering-geological and geomorphological conditions of gully erosion in loess deposits in the Kazimierz Dolny area (Opolska Droga Gully)
    Autorzy:
    Frankowski, Z.
    Grabowski, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074497.pdf
    Data publikacji:
    2006
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    erozja gleby
    erozja wąwozowa
    pokrywa lessowa
    geomorfologia
    Kazimierz Dolny
    loess gully erosion
    shear strength and natural moisture content in loess
    Opis:
    The article presents the problem of intense erosion in loess gullies in the locality Kazimierz Dolny. Primary reasons for such a quick development of gullies are: lithogenetic and physical-mechanical characteristics of loess, geomorphological and climatic conditions of the region and also human activity. Gully erosion impedes rural activity and communication in the area and causes considerable damages to local roads. In one of the loess gullies typical for the region, called ,,Opolska Droga” near Kwaskowa Góra, physical and mechanical parameters were examined by field and laboratory tests. The results revealed a clear correlation: shear strength of loess considerably decreases when its natural moisture content increases. What is also important, the structure of loess — loose soil skeleton mostly built of quartz and small amount of cementing clay particles — is prone to erosion. Thus, its adverse susceptibility to influence of water occurs to be primary reason of intensive gully erosion development in the area of Nałęczów Plateau . Additionally, geomorphological and climatic conditions, together with human rural activity (often using gullies as local ways of road transport) result in faster erosion development and, in effect, they lead to disastrous results like those that took place in the region during extreme rainfalls some years ago. Any stabilizing engineering works within loess gullies should be preceded by appropriately designed system for the regulation of run-off in the drainage area.
    Źródło:
    Przegląd Geologiczny; 2006, 54, 9; 777-783
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Genetic interpretation of micromorphological features of gully less - soil deposits (case study : Kolonia Celejów, E Poland)
    Autorzy:
    Mroczek, P.
    Rodzik, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/294683.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    gully erosion
    loess
    pedogenesis
    soil degradation
    micromorphology
    Opis:
    Five complex soil profiles in gully system on Nałeczów Plateau (E Poland) were examined. They represent the loess sediments modified by soil processes and postpedogenic transformations. Two examined profiles represent natural and mature Luvisols with diagnostic illuvial horizon (Bt argillic) developed on the edge of plateau geomorphologic level and in the relict valley bottom. The other soil profiles reflects postpedogenic soil degradation, redeposition and secondary accumulation (deluvia, colluvia and/or proluvia). Record of these processes are the micromorphological features created by lithological processes (=primary loess and secondary pedoliths) or by pedogenesis (mainly bioturbation, illuviation, de- and recalcification). The important group of microfeatures are pedorelicts which clearly confirm genetic dependences of pedoliths (deluvia and proluvia) and soils developed in situ and located in higher hypsometric levels in the catchment.
    Źródło:
    Landform Analysis; 2011, 17; 125-130
    1429-799X
    Pojawia się w:
    Landform Analysis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Phases of gully erosion recorded in alluvial fans (Lublin Upland, E Poland)
    Autorzy:
    Superson, J.
    Klimowicz, Z.
    Reder, J.
    Rodzik, J.
    Zgłobicki, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/295202.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Geomorfologów Polskich
    Tematy:
    alluvial fans
    historical gully erosion
    loess areas
    Eastern Poland
    Opis:
    The study was focused on the alluvial fans formed in the bottom of the Bystra river valley. A detailed analysis of four fans allowed to distinguish several phases of gully erosion related to human activity. The gullies started to develop in the Neolithis times, the subsequent phases of gully erosion could be dated to: Bronze Age, Middle Ages. In modern times, most of the sediments have been retained within the extensive gully systems.
    Źródło:
    Landform Analysis; 2011, 17; 205-208
    1429-799X
    Pojawia się w:
    Landform Analysis
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Erozja wąwozowa w zachodniej części Płaskowyżu Nałęczowskiego
    Gully erosion in the western part of the Nałęczów Plateau (Lublin Upland).
    Autorzy:
    Gardziel, Z.
    Harasimiuk, M.
    Jezierski, W.
    Pawłowski, A.
    Zgłobicki, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/2074492.pdf
    Data publikacji:
    2006
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    erozja wąwozowa
    Płaskowyż Nałęczowski
    gully erosion
    loess areas
    Nałęczów Plateau
    Opis:
    The areaswith thick loess covers face the risk of intense soil erosion processes as well as gully erosion. The western part of the Nałęczów Plateau is especially prone to particularly high degree of intensive erosion among the region (denudation hazard. The density of the gully network reaches here up to 10 km/km2. The administrative area of Kazimierz Dolny is under extreme threat of severe consequences of erosion processes which appeared with high frequency and caused significant devastation of infrastructure not only on a national but maybe on a European scale as well. Geological conditions together with surface features favour intensive, secondary and anthropogenically conditioned erosion processes. Already in the historical sources there are mentions about the disastrous consequences of torrential rainfalls in the Kazimierz Dolny region. In such conditions the torrential rainfall waters flow quickly down the gully bottoms of considerable inclinations, concentrating on the bottom of Grodarz river valley. As a result it may lead to flooding or silting of crops, the roads may be destroyed or silted and the properties completely flooded. Taking into account the natural and cultural values of Kazimierz Dolny and its surroundings, as well as the presence of the Kazimierz Landscape Park it is necessary to take urgent steps in order to limit the threats considerably.
    Źródło:
    Przegląd Geologiczny; 2006, 54, 9; 768-776
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Rozwój śródpolnego wąwozu drogowego w świetle badań pedologicznych i pomiarów GPS
    Development of the midfield road gully based on pedological investigations and GPS measurements
    Autorzy:
    Rodzik, Jan
    Krukowski, Mirosław
    Zagórski, Piotr
    Powiązania:
    https://bibliotekanauki.pl/articles/471437.pdf
    Data publikacji:
    2010
    Wydawca:
    Uniwersytet Pedagogiczny im. Komisji Edukacji Narodowej w Krakowie
    Tematy:
    Wyżyna Lubelska
    obszary lessowe
    holweg
    erozja gleby
    Lublin Upland
    loess area
    road gully
    soil erosion
    Opis:
    The article presents the development of a small, midfield form of road, which cuts the side of a loessic valley. The contemporary shape of the surface was determined by GPS measurements (Leica System 500), set together in ArcView and ArcGIS. Changing of its position was determined by a field analysis of the construction of 50 profiles of the Luvisols with varying degrees of erosion or aggradation. Calculation and visualization were performed in the ‘Surfer’ program. The results are interpreted in the context of changes in the agrarian structure since the end of the 19th century. It was found that the development of erosional forms is associated with an intensive use, since the late 1930s, of the road traced at the end of 19th century. Significant rate of its cutting is also the result of earlier soil erosion, due to its agricultural use since the late Middle Ages. Until achieving the depth of about 1 m, the form was the shape of a trough, because the road also served as a zone of turning round during the cultivation of the adjacent transversal-slope fields. In the 1970s, after a change in cultivation mode, erosion took the form of a box-like section. The average annual rate of cutting into the deepest section increased from 2.5 to4 cm and the depth - to 1.8 m. These conclusions confirm the profile of deposits on the extended cone at the gully mouth at the valley bottom. Their lower series, with thickness of 1.7 m and a massive structure, are products of soil erosion accumulated for several hundred years. The laminated top series with thickness of 0.8 m is distinguished by CaCO3 content growing towards the surface. Its accumulation at a rate of 1.2 cm per year is the result of a deeper cutting of the road on the slope.
    Źródło:
    Annales Universitatis Paedagogicae Cracoviensis Studia Geographica; 2010, 1 Dynamika zmian środowiska geograficznego pod wpływem antropopresji; 137-147
    2084-5456
    Pojawia się w:
    Annales Universitatis Paedagogicae Cracoviensis Studia Geographica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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