Published in Scientific Papers. Series E. Land Reclamation, Earth Observation & Surveying, Environmental Engineering, Vol. XIII
Written by Sorin HERBAN, Clara-Beatrice VÎLCEANU, Andrei CRIȘAN, Livia NISTOR-LOPATENCO
Taking into consideration the valuable spectral information and its wide coverage, satellite remote sensing is an efficient and accurate instrument to analyse and monitor the Earth's surface over time, even the negative consequences of anthropic activities. The present paper aims at monitoring in time the Roşia Poieni quarry and the negative effects resulting from the copper and gold exploitation, which led to the existence of the Valea Şesii tailing pond. To this purpose, Landsat satellite images were analysed over a 30-year period from platforms that offer free downloads. Image processing consisted of cropping the images according to the area of interest, applying the RGB combination and classifying them in order to obtain the surfaces. Moreover, indices for vegetation and water were applied for the images taken in 2018, 2020 and 2022. In order to obtain a more realistic image and to observe the differences, for the specified years, namely 2018, 2020 and 2022, Sentinel satellite images were processed in parallel. Despite the small size of the study area, satellite remote sensing has succeeded in delivering plausible, noteworthy results with great emphasis on hard-to-reach areas.
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