Análise multitemporal da linha de costa da praia de Torrões (Itarema, Ceará, Brasil) em médio período (1958-2004) utilizando imagens Quickbird e fotografias aéreas

Abstract

The changes in coastal line to Torrões Beach (Itarema, Ceará, Brazil) were analised along by 46 years period (1958-2004). Were observed major intensity of the erosion process in coastal line of area. The methodology consisted: collection multi-temporal airborne photography’s (1:32.500 and 1:25.000 scales) and spectral and spatial resolution to Quickbird satellite images ortho-retificatied (2004); the airborne photography was georeferenced for control points extracted Quickbird images; integration to visual interpretation to Quickbird satellite images (2004) and airborne photography’s (1958-1988); progration and retrogradation mapping, in scale 1:50000. The analyses indicated a major intensity to shoreline erosion process: retrogradation of -414948,3 m²/46years (1958/2004) (83,4%); and progradation by 82745,94 m² (1958/2004) (16,6%).