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EN
The aim of the study was to identify and assess the lithological features typical for alluvial sediments of Vistula River from the natural part of its course on 603 km of the river course. For this purpose, the micromorphological analysis was carried out for a sample taken from the surface of a tree covered island. The analysis is laborious, but its great advantage is that it allows to determine the detailed characteristics of undisturbed sediments, supplying other lithological studies. Examined thin section showed fractionation lamination within medium and fine sands, interbedded with coarser grains with some organic admixtures. Detailed analysis allows to detect gradual and sudden changes of discharge energy.
PL
Indeks jakości powietrza to doskonałe narzędzie do przekazywania informacji na temat poziomu zanieczyszczeń opinii publicznej za pośrednictwem mediów lub coraz bardziej dostępnego internetu.
3
Content available remote Bezprzewodowy system monitoringu gazowych zanieczyszczeń powietrza
PL
Artykuł zawiera opis budowy oraz możliwości systemu do pomiaru zanieczyszczeń gazowych powietrza atmosferycznego. Przedstawione zostały wymagania funkcjonalne, jakie postawiono mobilnej stacji diagnostycznej, oraz konstrukcja samej stacji. Zaprezentowano takie przykładowe wyniki pomiarów wraz z opisem zastosowania systemu oraz możliwego sposobu obróbki i wykorzystania otrzymywanych w ten sposób danych.
EN
The article describes the construction and possibilities of the system for atmospheric air gaseous pollution measurements. The article presents functional specifications for mobile diagnostic station as well as its design. Sample measurement results are also given along with the system application description and possible method of processing and utilization of obtained data
EN
The aim of this research was to estimate the scale and rate of tourist degradation in the surroundings of the trail in the Samaria Gorge. The extent of erosion was estimated based on field measurements. The biggest tourist degradation marks the section between the 2nd and the 7th km of the trail The traces of treading are marked by: uncovered tree roots, showing the indentation of the trail at over 20cm, stones protruding from the path, trampled roadsides and additional paths trodden along the trail. In the extreme case, the width of the trodden area exceeds 5 m. Below the Samaria village the trail leads mainly on the stony stream bed and there are no permanent traces of trampling. The research has proven that hiking can be a serious threat to relief of Crete due to the high human congestion on a small area. However, it is not the amount of the tourist movement that decides about the rate and scale of degradation, but the relation of the path to the forms of relief, the character of the ground, and the dynamics of the meteorological phenomena in the tourist season.
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