Terrain analysis of the Keller Peninsula (King George Island, Antarctica) by gis techniques

• Autor(a) principal: Mendes Júnior, Cláudio Wilson
• Data de Publicação: 2012
• Outros Autores: Dani, Norberto, Arigony Neto, Jorge, Simões, Jefferson Cardia, Bremer, Ulisses Franz, Fonseca Júnior, Edvaldo Simões da, Erwes, Herbert Johannes Bernhard
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da FURG (RI FURG)
• Texto Completo: http://repositorio.furg.br/handle/1/5542
• topic: Keller Peninsula; King George island; Terrain analysis; Geographical Information System; Península Keller; Ilha Rei George; Análise morfométrica; Sistema de Informação Geográfica

This study uses a Geographical Information System (GIS) for terrain analysis of the Keller Peninsula (KP), King George Island (KGI), Antarctica, to describe its morphological characteristics. We processed a vertical metric aerial photography and a DigitalTerrain Model(DTM)in a Digital Photogrammetric Station to generate an orthophoto and then to create a KP orthophotomap. A more detailed DTM for the area surrounding the Brazilian Comandante Ferraz Station (EACF) was generated adding local points with known elevation. From these DTMs, we derived hypsometric, slope and aspect maps, hillshade models, perspective view scenes and topographic profiles, as well as measurements of distances, perimeters, areas and volumes for the KP and the EACF areas. At KP predominate steep terrain slopes (35.6%), followed by very steep (22.3%), moderate (20%) and abrupt areas (12.8%). Its hillsides are mainly westward (21.3%) and eastward (15.3%) oriented.