Abstract
From survey and drill data a GIS model was design based on 1:10000 and 1:25000 maps in digital format (dwg), using the Arc View software. Furthermore, two Landsat7 satellite images were considered to model vegetation cover, lands use and site catchment areas. A digital model of the landscape in TIN format was created from archaeological data to analyse visibility and visibilisation. The hypothesis to be tested here postulates that the nuraghi acted as a landmark in an originally dense forested landscape, as pollen analyses indicate. The estimation of accessibility to the territory and the possibility of communication among sites considered the strong unevenness of the landscape. The aim was to detect a land use pattern that could explain the high concentration of grosso modo coetaneous settlements in short distances. The hypothesis of a possible visual hierarchisation of the space was also tested depending on the nuraghi architectural importance.
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