VALIDAÇÃO DE PRODUTOS POR SATÉLITE ATRAVÉS DE MEDIÇÕES DO SITU PARA MONITORAR COBERTURAS TERRESTRE NO SUL DE PAMPAS (ARGENTINA)

Autores

  • Federico Ferrelli Instituto Argentino de Oceanografia
  • Andrea Soledad Brendel Universidad Nacional del Sur (UNS)-CONICET Bahía Blanca - Argentina
  • Gerardo Miguel Eduardo Perillo Universidad Nacional del Sur (UNS)-CONICET Bahía Blanca - Argentina
  • María Cintia Piccolo Universidad Nacional del Sur (UNS)-CONICET Bahía Blanca - Argentina

DOI:

https://doi.org/10.14393/RCG217654051

Palavras-chave:

Firmas espectrales, Imágenes Landsat, MODIS-Landcover, ESA-Landcover, Matriz de confusión

Resumo

The study of regional-scale land covers is an expensive activity that requires specific equipment. This work aimed to analyze the precision and the accuracy between satellite products and a land cover map obtained using in situ measurements in the Sauce Grande river basin (Argentina). In order to do so, we carried out five field trips during 2018 to identify land covers. It was studied the reflectance of each class from georeferenced samples acquired with a spectrometer and a GPS. Besides, spectral indices of vegetation, water, and soil were calculated to analyze the spectral behavior of each class. With this information, we delimited regions of interest to perform the supervised method. Subsequently, we downloaded the MODIS and ESA Landcover products. Then, we established a pixel of 300 meters for the three maps with matrix metrics. The Kappa coefficient, the overall accuracy, as well as the user and producer ones, were calculated to evaluate the estimated land cover against the measured ones. Results showed that MODIS-Landcover presents excellent agreements for determining crops and grasslands, while ESA-Landcover for urban expansion and water bodies.

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Biografia do Autor

Federico Ferrelli, Instituto Argentino de Oceanografia

Instituto Argentino de Oceanografía (IADO), Universidad Nacional del Sur (UNS)-CONICET Bahía Blanca - Argentina. Departamento de Geografía y Turismo, Universidad Nacional del Sur (UNS).

Andrea Soledad Brendel, Universidad Nacional del Sur (UNS)-CONICET Bahía Blanca - Argentina

Instituto Argentino de Oceanografía (IADO), Universidad Nacional del Sur (UNS)-CONICET Bahía Blanca - Argentina. Departamento de Agronomía, Universidad Nacional del Sur (UNS).

Gerardo Miguel Eduardo Perillo, Universidad Nacional del Sur (UNS)-CONICET Bahía Blanca - Argentina

Instituto Argentino de Oceanografía (IADO), Universidad Nacional del Sur (UNS)-CONICET Bahía Blanca - Argentina. Departamento de Geología, Universidad Nacional del Sur (UNS).

María Cintia Piccolo, Universidad Nacional del Sur (UNS)-CONICET Bahía Blanca - Argentina

Instituto Argentino de Oceanografía (IADO), Universidad Nacional del Sur (UNS)-CONICET Bahía Blanca - Argentina. Departamento de Geografía y Turismo, Universidad Nacional del Sur (UNS).

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Publicado

03-08-2020

Como Citar

Ferrelli, F., Soledad Brendel, A., Miguel Eduardo Perillo, G. ., & Cintia Piccolo, M. (2020). VALIDAÇÃO DE PRODUTOS POR SATÉLITE ATRAVÉS DE MEDIÇÕES DO SITU PARA MONITORAR COBERTURAS TERRESTRE NO SUL DE PAMPAS (ARGENTINA). Caminhos De Geografia, 21(76), 190–207. https://doi.org/10.14393/RCG217654051

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