@InProceedings{CostaSilvPrudSant:2017:DeAmBa,
               author = "Costa, Silas Alexandria and Silva, Leonardo Almeida da and 
                         Prudente, Thiago Awad and Santos, Pablo Santana",
                title = "Avalia{\c{c}}{\~a}o de sensibilidade espectral da {\'a}gua do 
                         rio Doce a partir de imagem orbital: o desastre ambiental da 
                         barragem de rejeito da Samarco Minera{\c{c}}{\~a}o S.A",
            booktitle = "Anais...",
                 year = "2017",
               editor = "Gherardi, Douglas Francisco Marcolino and Arag{\~a}o, Luiz 
                         Eduardo Oliveira e Cruz de",
                pages = "2248--2254",
         organization = "Simp{\'o}sio Brasileiro de Sensoriamento Remoto, 18. (SBSR)",
            publisher = "Instituto Nacional de Pesquisas Espaciais (INPE)",
              address = "S{\~a}o Jos{\'e} dos Campos",
             abstract = "The accident occurred in Mariana-MG causing a total leak of 
                         62,000,000 m³ of sediment, generating an immeasurable 
                         socio-environmental impact. The turbidity rate causes the 
                         scattering of the incident radiation in the subsurface, allowing 
                         to measure a dynamics between the evolution and subsequent 
                         involution of the reflectance levels to long time. This paper has 
                         the objective to accomplish a temporal evaluation (before the 
                         disaster: 10/13/2015, after: 11/30/2015, 01/01/2016 and 
                         05/03/2016) of the spectral response in nearby water targets from 
                         the mouth of the river Doce, downstream of the disaster, with 
                         orbital images. The surface reflectance images were redesigned for 
                         the Southern Hemisphere, and by map of algebra the values for each 
                         spectral band of the OLI / LANDSAT-8 (reflective spectrum) were 
                         obtained over the 04 periods, in the 09 monitoring points 
                         established. The differences in the behavior of the spectral bands 
                         in all the analyzed samples show an expressive contrast of the 
                         surface reflectance rates before and after the environmental 
                         disaster (2 scenarios), that is, after the accident the values 
                         found were much higher. The spectral bands B1, B2, B3, B4 and B5 
                         presented statistical significance in the distinction between the 
                         two scenarios, while bands B6 and B7 were not sensitive to 
                         increase of sediment adsorbed in the water after the environmental 
                         disaster. The comparison between the surface reflectance values 
                         and the monthly precipitation, allowed to identify the influence 
                         of rain (transport of river bank and bottom sediment) on orbital 
                         estimates.",
  conference-location = "Santos",
      conference-year = "28-31 maio 2017",
                 isbn = "978-85-17-00088-1",
                label = "59886",
             language = "pt",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "8JMKD3MGP6W34M/3PSLQ8K",
                  url = "http://urlib.net/ibi/8JMKD3MGP6W34M/3PSLQ8K",
           targetfile = "59886.pdf",
                 type = "{\'A}reas {\'u}midas e {\'a}guas interiores",
        urlaccessdate = "27 abr. 2024"
}