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Abstract
Quarrying causes high damage to the ecosystems, consequently abandoned sites monitoring is a very important issue. This study describes a methodology to assess the sites’ state of restoration through the analysis of Landsat 5 TM images. The procedure does not require any radiometric corrections for atmospheric effects nor for irradiance effects related to the relief. Such corrections would require a model for the atmosphere at the time the images were taken and a detailed digital topographic model (DEM). In addition, the use of a GIS allowed a direct model calibration from satellite images without any previous field inventory and measurements. The results from the proposed procedure have been compared to in-situ surveyed data.