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Orientation and rounding of limestone coarse grains (5-20 cm) were analyzed in 4 cross sectionts of the middle part of the Wadi Gabes in SE Tunisia. The measured grains were found in the channel floor and banks. It was found that there is an increase in rounding of all measured fractions along the researched part of the wadi. Rounding of fraction 7-10 cm increased the most. Orientation of elongated...
The article describes morphology and dynamics of 2 small wadis (gullies) in the vicinity of Gabes, tributaries of the Wadi Gabes, which cut a loess cover of sea-side region. Mapping in 1995 and 1998 was aimed to recognize contemporary gullying resulting from precipitation 807 mm with maximal 51 and 92 mm per day. Slope gradients and length of the thalweg as well as depth and width in cross sections...
Fundacja Nasza Ziemia od 1994 r. inspiruje gminy i szkoły do uczestnictwa w "Sprzątaniu świata". W wielu miejscowościach akcja stała się okazją do podsumowania całorocznych działań na rzecz ochrony środowiska. Obecnie Fundacja oferuje samorządom model pomocny przy tworzeniu lokalnych programów aktywnej edukacji ekologicznej.
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...
The aim of the study was the analysis of scructural and texcural features of the slope cover deposits in relation to the character of the substratum deposits. The slope of a small hillock formed of fluvioglacial deposits was chosen as representative of the last glaciation area. Structure of the near-surface parts of the hillock and the slope cover deposits were analysed based on five pies dug along...
In the northeastem Poland, on the selected slopes was conducted the investigation of soil erosion in 1987-1989 and 1998-1999. The main undertaken tasks were: quantitative examination of interrill erosion and pointing out the erosion and accumulation zones on the slopes. On convex-concave slopes of the inclination below 9° the most intensive erosion resulting from the sheet wash, occurred on convex...
Investigations in to the intensity of soil erosion have been conducted by measurements of rill capacities on selected hillslopes in agricultural areas of North-Eastern Poland. The intensity of interrill erosion has been measured by using sediment traps. Owing to the interrill erosion, it is the convex parts of the slopes which have been eroded the most intensively. On gentle slopes (<9 degrees),...
In North-East Poland, in the Riss Glaciation zone there occur hills of a characteristic conical shape. They have asymmetric slopes: one is usually short and steep, the opposite is longer and softer. They are connected with depressions left by blocks of dead ice and usually situated on the border of such basins. They are built of fluvioglacial deposits, sometimes with added ablation clays. They are...
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