Application of digital elevation models to geological and geomorphological studies - some examples

• Autorzy: Badura J. , Przybylski B.
• Języki publikacji: EN

Abstrakty

EN

Analysis of the Earth’s surface using three-dimensional models provides a wealth of new interpretation opportunities to geologists and geomorphologists. Linear elements, not visible on classical maps, become distinct features; it is also possible to interpret both small-scale glacial landforms and entire complexes of postglacial landscapes at the regional scale. Geomorphic features are frequently difficult to recognise in the field, either due to their scale or field obstacles. Three-dimensional visualization of the Earth’s surface and its examination at different angles and differently orientated source of light is extremely helpful in geological and geomorphological studies. This tool is, however, relatively seldom used due to either limited access to digital data bases or time-consuming procedures of individual construction of such bases from the existing cartographic data. For instance, analysis of small-scale glacial, fluvial or aeolian landforms in lowland areas requires cartographic data of resolution compatible with 1 : 10,000 scale. Nevertheless, less detailed digital elevation models, constructed at the scale of 1 : 50,000, are also extremely helpful, since they allow for regional interpretations of those morphostructures which are associated not only with neotectonics, but also with ice-flow directions, block disintegration of an ice-sheet, subglacial drainage, stages of fluvial erosion, or location of dune belts. A possibility of superposition of geological or geomorphological maps onto 3-D models is equally important, enhancing readability of the maps and providing clues to verification of the origin of landforms and proper cross-cutting relationships drawn on the map.

Słowa kluczowe

EN

digital elevation model (DEM); geological cartography; SW Poland

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Przegląd Geologiczny
• Rocznik: 2005
• Tom: Vol. 53, nr 10/2
• Strony: 977--983
• Opis fizyczny: Bibliogr. 25 poz., rys.

Twórcy

autor

Badura J.

• Polish Geological Institute, Lower Silesian Branch, Jaworowa 19, 53-122 Wrocław

autor

Przybylski B.

• Polish Geological Institute, Lower Silesian Branch, Jaworowa 19, 53-122 Wrocław

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