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Appraise of consequences of erosive processes occurring in the Skawa river sector

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Języki publikacji
EN
Abstrakty
EN
Erosive processes have been evaluated in a sector of the Skawa river characterized by high pliability to erosion (proportion between the bend radius and the river channel width equals on the average 6.5). Within two years, channel erosion caused by 6 freshets was investigated with flows Q within the range of probability of waters from 20% to 50%. Bank and bottom erosion as well as transportation of the bed material and material from falls of bank slopes were found to occur. Intensity of this transportation was calculated based on Bagnold's equation. The calculated value of transported bed load was comparable with that obtained from direct measurements. The effects of transportation were also reflected by changes of the grain size distributions after passage of a freshet wave. Bank erosion was the dominating process that changed the river channel shape. It was found that in the examined sector the retreat of the bank slope proceeded at the rate of 1.20 m/year.
Rocznik
Strony
83--92
Opis fizyczny
Bibliogr. 17 poz.
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autor
autor
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Bibliografia
  • [1] KRZEMIEŃ K., Geogr. Polonica, 1992, 60, 51.
  • [2] LEOPOLD L.B., WOLMAN M.G., River Channel patterns: braided, meandering, and straight. US. Geol. Surv. Prof., Paper 282-B, 1957, p. 39–85.
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  • [7] LAWLER D.M., Process dominance in bank erosion systems, [In:] Lowland floodplain rivers: Geomorphological Perspectives, P.A. Carling, G.E. Petts (Eds.), Wiley, 1992, p. 117–143.
  • [8] MICHALIK A., The research on intensity of sediment transport dragged in Carpathian rivers, Zesz. Nauk. AR Cracow, 1990, p. 138 (in Polish).
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  • [10] HICKIN, E.J., NANSON G.C., The character of channel migration on the Button river, Northeast British Columbia, Canada, Geol. Soc. Am. Bull., 1975, p. 487.
  • [11] HOOKE, J.M., Earth Surf. Processes Landforms, 1980, 5, 143.
  • [12] THORNE C.R., OSMAN A.M., The influence of bank stability on regime geometry of natural channels, Proc. Int. Conf. River Regime, May 18–20, Wallingford, UK, 1988, 135.
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  • [15] ODGAARD A.J., BERGS M.A., Water Resour. Res., 1988, 24, 45.
  • [16] TEKIELAK T., MICHALIK A., BĄK Ł., Infrastrukt. Ekol. Terenów Wiejskich, 2006, 4 (2), 193.
  • [17] BAGNOLD R.A., Proc. Royal Soc. London, 1980, A372, 453.
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-article-BPW8-0016-0009
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