Topographical features and streams profiles analysis for Bukowe Hills catchment

Bukowe Hills region, located in Nizina SzczeciƄska Plan is characterised by complicated hypsometric and geological composition. Heights reach 80-140 m, with denivelations often more than 60m. Complex of small nearly mountain catchments, with maximum area of 5 km2 drains researched region. Characteristic horizontal sections of longitudinal profiles are interesting feature of selected hydrological systems, originated from short period stages of deglaciation. Topographical characteristics of selected catchments were derived from DEM, prepared on basis of topographical maps. Longitudinal profiles of streams and slope maps were analyzed also. ...

CHANGES OF SOIL MICRORELIEF UNDER THE INFLUENCE OF SIMULATED RAINFALL

Soil microrelief is one of the factors affecting wind and water erosion process. Spatial variability of soil surface (microrelief) influences initiation of the surface runoff and water flow mainly through depressions, where the runoff is delayed and infiltration increases owing to the interception of the flowing water. The research was conducted to assess the changes of relief of two soils (sandy loam and fine sand) under the influence of rainfall in a model experiment. The soil microrelief was determined by means of a contactless 3D scanner using the effect of line distortion as light beam illuminating the object surface (so called Moire pattern). On the basis of obtained results, maps of the differences in the scanned surface elevations were plotted in ArcGIS programme and the soil losses volume was computed. RR indicator calculated for sandy loam was decreasing with increasing depth of simulated rainfall. No such dependence was observed for loose sand. ...