@InProceedings{RodriguesAlcWatRotIma:2017:OLSeBa,
               author = "Rodrigues, Thanan Walesza Pequeno and Alc{\^a}ntara, Enner 
                         Herenio and Watanabe, Fernanda Sayuri Yoshino and Rotta, Luiz 
                         Henrique da Silva and Imai, Nilton Nobuhiro",
                title = "OLI/Landsat-8 semi-analytical based model for retrieving Secchi 
                         disk depth in Nova Avanhandava Reservoir",
            booktitle = "Anais...",
                 year = "2017",
               editor = "Gherardi, Douglas Francisco Marcolino and Arag{\~a}o, Luiz 
                         Eduardo Oliveira e Cruz de",
                pages = "871--878",
         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 = "Water clarity can be considered as the key information to assess 
                         water quality. This information can be related to the vertical 
                         visibility, analogous to the Secchi disk depth 
                         (\𝑍\𝑆\𝐷), which is measured manually 
                         with a Secchi disk or by remote sensing. The second one uses 
                         bio-optical models, however, most of them were calibrated for 
                         oceanic and coastal waters. The semi-analytical approach uses as 
                         input, the inherent optical properties (IOPs) retrieved from the 
                         quasi-analytical algorithm (QAA) designed for seawaters. 
                         Therefore, we hypothesized that error caused by the use of a 
                         semi-analytical designed for oceanic waters will prevent an 
                         accurately \𝑍\𝑆\𝐷 estimation in an 
                         oligo-to-mesotrophic reservoir. Aiming to test this hypothesis, we 
                         used in situ data collected in three different dates considering 
                         OLI/Landsat-8 bands. As result, we noticed that according to the 
                         reservoir optical water quality, the estimation of 
                         \𝑍\𝑆\𝐷 returned Mean Absolute 
                         Percentage Errors ranging between 12.23% and 28.10% when compared 
                         to in situ data. We also used a dataset (n = 6) collected two and 
                         three days before OLIs overpass in order to validate the model 
                         using satellite data and the errors were 9.18% and 6.32% for the 2 
                         and 3-day delay, respectively. These results showed that QAA 
                         designed for seawaters was able to retrieve 
                         \𝑍\𝑆\𝐷 in an oligo-to-mesotrophic 
                         reservoir, probably because the closed bio-optical properties from 
                         both environments, assuming to be applicable to water clarity 
                         monitoring.",
  conference-location = "Santos",
      conference-year = "28-31 maio 2017",
                 isbn = "978-85-17-00088-1",
                label = "59635",
             language = "en",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "8JMKD3MGP6W34M/3PS4FNT",
                  url = "http://urlib.net/ibi/8JMKD3MGP6W34M/3PS4FNT",
           targetfile = "59635.pdf",
                 type = "{\'A}reas {\'u}midas e {\'a}guas interiores",
        urlaccessdate = "27 abr. 2024"
}