Geographia Polonica (2012) vol. 85, iss. 4

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A geomorphometric analysis of Poland on the basis of SRTM-3 data

Przemysław Śleszyński

Geographia Polonica (2012) vol. 85, iss. 4, pp. 47-61
doi: https://doi.org/10.7163/GPol.2012.4.24

Abstract

The paper presents a range of geomorphometric analyses of Polish territory using both classical and new approaches.The classical outcomes include maps of hypsometry, relative altitude, angle of slope and exposure, as well as altitudesbroken down into ranges and angle of slopes in percentages broken down by administrative province. The new approachincluded the presentation of land relief through standard deviations of relative elevation in regular geometric fields.Maps of hypsometry, elevation difference, angle of slope, exposure and standard deviation were also presented. Thesurvey involved elevation data from the SRTM-3 satellite with a resolution of 3×3' (60-65×90 m), which were converted forresearch purposes into a grid of 125×125 m and then into hexagons with a surface area of 0.14 and 3 km2. This level ofdetail makes the data particularly useful in morphometric analyses, including in applied research. Certain terrain coverageelements, such as forests, especially in lowland and flatland areas, affected the data and would have to be filteredout in applications requiring even higher accuracy.

Keywords: morphometry, geomorphometry, topographic quantification, land relief, land-surface parameters, SRTM, cartographical analyses, Poland

Przemysław Śleszyński [psleszyn@twarda.pan.pl], Institute of Geography and Spatial Organization PAS