| Journal: | Revista geografica academica |
| Database: | PERIÓDICA |
| System number: | 000329039 |
| ISSN: | 1678-7226 |
| Authors: | Rowberry, Matt D1 |
| Institutions: | 1University of the Witwatersrand, School of Geosciences, Witwatersrand. Sudáfrica |
| Year: | 2008 |
| Volumen: | 2 |
| Number: | 2 |
| Pages: | 26-40 |
| Country: | Brasil |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Analítico, descriptivo |
| English abstract | This paper uses the elevation-relief ratio to constrain the horizontal and vertical extent of sub-horizontal denudation surfaces in Wales, United Kingdom. The elevation-relief ratio has been chosen as the appropriate geomorphological parameter as it allows such surfaces to be mapped analytically, even in areas that have been subjected to considerable linear denudation; thus, the technique is applicable in a wide range of topographic settings. For the first time, the elevation-relief ratio has been calculated through the interrogation of the SRTM DEM, using ESRI ArcMap 9.2 GIS software; the methodology has been described in detail. Five sub-horizontal denudation surfaces are recognized at between 40-90 m asl, 118-132 m asl, 173-187 m asl, 219-229 m asl, and 385-520 m asl. The number and altitudinal range of these surfaces has not been recognized in any previous study; the enduring tripartite division of the Welsh landscape envisaged by Brown (1960) must now be rejected, both in terms of the number of surfaces that may be recognized and their altitudinal range |
| Disciplines: | Geografía, Geociencias |
| Keyword: | Cartografía, Geografía física, Geología, Elevación del terreno, Mapas, Superfície, Gales, Reino Unido |
| Keyword: | Geography, Earth sciences, Cartography, Physical geography, Geology, Terrain elevation, Maps, Surface, Wales, United Kingdom |
| Full text: | Texto completo (Ver PDF) |
