@InProceedings{LealPoCiYaSaBi:2017:ReGu,
               author = "Leal, Philipe Riskalla and Pomp{\^e}o, Marcelo Luiz Martins and 
                         Cintra, Jorge Pimentel and Yamamoto, Jorge Kazuo and Santos, 
                         Rozely Ferreira dos and Bitencourt, Marisa Dantas",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Modelagem de relevo submerso atrav{\'e}s de geoprocessamento: 
                         Reservat{\'o}rio Guarapiranga ? SP",
            booktitle = "Anais...",
                 year = "2017",
               editor = "Gherardi, Douglas Francisco Marcolino and Arag{\~a}o, Luiz 
                         Eduardo Oliveira e Cruz de",
                pages = "577--584",
         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 = "This work aimed at a Fishfinder bathymetric data processing in GIS 
                         (Geographic Information System) environment, in order to assess 
                         lentic ecosystem morphometry. The Reservoir Guarapiranga has been 
                         utilized as the model environment for data acquisition and results 
                         interpretation. This reservoir is of major importance to the 
                         S{\~a}o Paulo Metropolitan Region Brazil, responsible for 20% of 
                         its water supply. It is considered a shallow reservoir, with 
                         highly urbanized margins, and it is one of the eldest reservoirs 
                         of the region (110 years). The bathymetric data has been assessed 
                         during July 29 and 30 of 2015, relative to the water levels 735.11 
                         and 735.10 meters respectively, through the GARMIN GPSmap (model 
                         421S). The reservoirs margins have been assessed through visual 
                         vectorization based on the water limits derived from the 
                         ALOS-AVNIR images of 03/09/2010. 18.677 bathymetric points have 
                         been assessed through the Fishfinder, and others 3488 points from 
                         the margins visual vectorization. Our results are: a) the 
                         bathymetric data interpolation processing which best represented 
                         the underwater surface has been the Triangular Irregular Network 
                         (TIN) with Delaunay triangulation; b) the reservoir depth varied 
                         between zero e 17m; c) a useful volume of 160.09 hm3; d) a 
                         projected area of 24.85 Km2 of free water surface (with no 
                         macrophytes, exposed soils or islands); e) real surface area of 
                         45.32 Km2 of free water surface, which is the reservoirs bed real 
                         surface. Conclusions: a) the Fishfinder has properly served its 
                         purposes, presenting easy handling and low cost; b) the reservoirs 
                         morphometric structures perception became evident with the TIN 
                         interpolation, denoting its dependency to the interpolator 
                         applied; c) by comparing the reservoirs original volume with the 
                         one found by this research, one may notice little difference; d) 
                         the GIS tools have shown to be applicable to tridimensional 
                         studies, which are of major importance for limnological studies.",
  conference-location = "Santos",
      conference-year = "28-31 maio 2017",
                 isbn = "978-85-17-00088-1",
                label = "60194",
             language = "pt",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "8JMKD3MGP6W34M/3PS44H6",
                  url = "http://urlib.net/ibi/8JMKD3MGP6W34M/3PS44H6",
           targetfile = "60194.pdf",
                 type = "Recursos h{\'{\i}}dricos",
        urlaccessdate = "27 abr. 2024"
}