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@InProceedings{MedeirosGiarOliv:2017:EsFaL,
               author = "Medeiros, Grasiela de Oliveira Rodrigues and Giarolla, 
                         Ang{\'e}lica and Oliveira, Gilvan Sampaio de",
          affiliation = "{Instituto Nacional de Pesquisas Espaciais (INPE)} and {Instituto 
                         Nacional de Pesquisas Espaciais (INPE)} and {Instituto Nacional de 
                         Pesquisas Espaciais (INPE)}",
                title = "Estimativa do fator L da Equa{\c{c}}{\~a}o Universal da Perda de 
                         Solo em escala regional ? aplica{\c{c}}{\~a}o para o Estado de 
                         S{\~a}o Paulo",
            booktitle = "Anais...",
                 year = "2017",
               editor = "Gherardi, Douglas Francisco Marcolino and Arag{\~a}o, Luiz 
                         Eduardo Oliveira e Cruz de",
                pages = "1724--1731",
         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 = "To integrate studies in the Earth System Science context, erosion 
                         models were applied only in local scale have been adapted to 
                         regional scales such as the Universal Equation for Soil Loss 
                         (USLE). Among the parameters required by USLE to estimate soil 
                         loss rates the slope length (L) is the main factor favored by 
                         advances in the acquisition of Remote Sensing data, especially 
                         topographical, and the development of Geographic Information 
                         Systems (GIS) and it responsible for satisfactory local-regional 
                         adaptation of the model. In this context, the aim of this study 
                         was to obtain the L factor map for the Sao Paulo State using the 
                         equation of Desmet and Govers (1996), a methodology that employs 
                         the concepts of flow direction and accumulate area. Therefore, it 
                         was used ArcGIS software and elevation data from TOPODATA project 
                         that have a spatial resolution of 30 m. The results showed that 
                         the lowest values occurred in interfluves (hilltops) and larger 
                         towards the bottom of the valley where there is significant 
                         distances from the turning point and flow convergence, and steep 
                         slopes (same behavior as the accumulative area). Thus, the higher 
                         the L value, the greater the speed and the concentration of 
                         runoff, which allows us to infer that these are the areas more 
                         conducive to the occurrence of erosion.",
  conference-location = "Santos",
      conference-year = "28-31 maio 2017",
                 isbn = "978-85-17-00088-1",
                label = "59665",
             language = "pt",
         organisation = "Instituto Nacional de Pesquisas Espaciais (INPE)",
                  ibi = "8JMKD3MGP6W34M/3PSLP7S",
                  url = "http://urlib.net/rep/8JMKD3MGP6W34M/3PSLP7S",
           targetfile = "59665.pdf",
                 type = "Risco ambiental",
        urlaccessdate = "27 nov. 2020"
}


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