Vedecké časopisy a ročenky vydávané na pôde SAV

Zoznam článkov

Geografický časopis

Volume 65, 2013, No. 3


  Problém správnej a exaktnej definície geometrických foriem georeliéfu vzhľadom na tiažové pole Zeme
Jozef Krcho 1), Alexandra Benová 2)

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1)Prírodovedecká fakulta Univerzity Komenského v Bratislave,Katedra kartografie, geoinformatiky a diaľkového prieskumu Zeme, Mlynská dolina 1, 842 15 Bratislava.
2)Prírodovedecká fakulta Univerzity Komenského v Bratislave, Katedra kartografie, geoinformatiky a diaľkového prieskumu Zeme, Mlynská dolina 1, 842 15 Bratislava.

altitude gradient grad z a -grad z, gravitational field of Earth, gradient of potential energy (grad Wp), gradient of kinetic energy (grad Wk) in altitude field, profile curvatures (KN)n, (KN)t, plan curvature Kr, normal forms Fn, Ft, total geometric form

Expression of the convexity and concavity of georelief geometric forms is critically analysed. The meaning of signs (±) in mathematical formulas for the ordered couple of normal curvatures [(KN)n; KN)t], which represents the basis of classification of geometric forms is considered. The problem of signs (±) is analysed: a) from the purely mathematical point of view, b) from the physical point of view, in which georelief and the course of processes in the gravitational field of Earth are considered for the formation of geometric forms. It shows the correctness of both viewpoints, but the consequences for classification of these forms from the geomorphological point of view are also exposed.

Geografický časopis. Volume 65, 2013, No. 3: 198-216.

  Vybrané charakteristiky transformácie religiozity na Slovensku v rokoch 1950-2001 vo vzťahu k sekularizácii
Juraj Majo 1)

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1)Univerzita Komenského v Bratislave, Prírodovedecká fakulta, Katedra humánnej geografie a demogeografie, Ilkovičova 6, 842 15 Bratislava.

religion, secularization, socialism, urban space, rural space,Slovakia

The study of spatial and social aspects of religion in Central- and Eastern-European countries struggles with the lack of representative data from the socialist era. Crude yet very unique data coming from the 1950 census, the first under socialism, which still contained questions about religious adherence are analysed here. Within the framework of serious opinions analysing the situation in Slovakia in its broader geopolitical situation comparing the religiosity level between 1950 and 2001, regions of Slovakia with variable depth of changes of overall religious identity are identified. The intensity of secularization in districts of Slovakia is scaled on 4 levels. It seems that the uneven distribution of urbanization, industrialization, specific religious structure of the population (Protestant especially) in certain regions and other processes here connected with socialism enabled the creation of a variable religious landscape in Slovakia with different levels of retreat of religion. Surprisingly, not just the biggest cities, but also many rural areas became intensively secularized.

Geografický časopis. Volume 65, 2013, No. 3: 217-234.

  Analýza zmien priestorovej štruktúry krajinnej pokrývky územia severne od vodnej nádrže Zemplínska Šírava
Monika Ivanová 1), Eva Michaeli 2), Martin Boltižiar 3)

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1)Prešovská univerzita v Prešove, Fakulta humanitnych a prirodnych vied, Katedra geografie a regionálneho rozvoja, Ul. 17 novembra 1,081 16 Prešov.
2)Prešovská univerzita v Prešove, Fakulta humanitnych a prirodnych vied, Katedra geografie a regionálneho rozvoja, Ul. 17 novembra 1,081 16 Prešov.
3)Constantine the Philosopher University in Nitra, Faculty of Natural Sciences, Department of geography and regional development, Trieda A. Hlinku 1, 949 74 Nitra.

land cover changes, landscape metrics, patch, East Slovakia

The paper deals with analysis of changes in the spatial structure of land cover based on the selected landscape-ecological indices in the 1956, 1991, 2005 and 2009. Studied region is represented by five cadastral territories of the municipalities of Vinné, Kaluža, Klokočov, Kusín and Jovsa. They are located in the region of eastern Slovakia on the border of two genetically distinct morpho-structural units: Eastern Pannonian Basin and Eastern Carpathians. It is a contrasting region which has undergone significant changes from the perspective of spatial structure and land use. A significant portion of changes in the spatial structure of the territory was caused by organizational-political, ecological-environmental and economic factors. The basis for the assessment of spatial characteristics of landscape was land cover classes on the level of the so-called patches which provide information on the number of landscape elements of different categories, their average size, continuity, mosaics, etc. Moreover, they also have a significant impact on the functioning of various processes taking place in the landscape (Lipský, 2000). The spatial characteristics of landscape structure on the level of patches were evaluated in ArcView GIS 3.2 by means of the Patch Analyst 3.1 extension.

Geografický časopis. Volume 65, 2013, No. 3: 235-250.

  Morfoštruktúrna analýza reliéfu ako nástroj na pochopenie vývoja zmien riečnej siete - príklad severovýchodného Slovenska
Ján Lacika 1), Milan Lehotský 2)

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1)Geografický ústav SAV, Štefánikova 49, 814 73 Bratislava.
2)Geografický ústav SAV, Štefánikova 49, 814 73 Bratislava.

morphostructures, basin of the River Laborec, river piracy, neotectonics, valleys, north-eastern Slovakia

A geomorphological network – a network of valleys and inter-valley ridges develops in changing morphostructural and morphoclimatic conditions. It is transforming. A new network replaces the old one. Thanks to the gradual character of this process it is possible to identify several generations of networks in relief. Their analysis may bring some valuable pieces of knowledge about the geomorphological development of a certain territory. In basins of north-eastern Slovakia (the mountainous part of the River Laborec and small partial basins in the Poloniny Mts. located in the basin of the River Uh) texture properties of valley networks, barrier effect of basins, isobasite map and relevant properties of the geological structures were analysed. The results confirmed that the territory in question has been subject to a complicated morphostructural development in the Neogene and the Quaternary, which manifested itself in a pronounced transformation of the geomorphological networks, as well as in other ways. The old network formed in the Palaeogene corresponded to the arrangement of fold structural elements of the outer flysch belt. A new network with a considerably different composition of valleys and ridges was formed in the changed morphostructural conditions. Transformation where the river piracy has played a multiple role has reached the stage in which the new network prevails but segments of the old network are still recognizable. This transformation was caused by three morphostructural agents: subsidence of the territory of what is today the East Slovakian Lowland, developments in the neighbouring basin of the River Ondava and the rise of a barrier in the form of the Neogene stratovolcanos, the Vihorlatské Mts.

Geografický časopis. Volume 65, 2013, No. 3: 251-268.

  Nízkonákladové mikro_UAV technológie v geografii (nová metóda zberu priestorových dát)
Ján Sládek 1), Miloš Rusnák 2)

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1)Geografický ústav SAV, Štefánikova 49, 814 73 Bratislava.
2)Geografický ústav SAV, Štefánikova 49, 814 73 Bratislava.

UAV, geography, photogrammetry,3D modelling

The aim of this paper is to present the possibility of using the micro UAV (Unmanned Aerial Vehicle) technology in geographical research. An UAV can carry a wide range of sensors – such as camera, camcorder – spectral camera, LIDAR, sensor of temperature, humidity or chemical gas analysers – depending on the load capacity of devices. Micro UAV technology enables data collection with high resolution and accuracy. Their use is recommended in locations where for technical – or safety reasons, there is no access to conventional equipment such as flying aircraft, helicopters, airships or balloons, or their use would be too expensive. From the data obtained by the UAV it is possible to create orthophoto maps, digital elevation models, 3D visualization and reconstructions of different objects on the surface. Authors of this paper outline three examples for application of this technology: ortophoto mosaic of avulsion channel, colorized point cloud part of river dyke, photorealistic 3D model of archaeological site.

Geografický časopis. Volume 65, 2013, No. 3: 269-285.