@Article{AssireuNoLoBrLiSt:2004:ApOpFr,
               author = "Assireu, Arcilan Trevenzoli and Novo, Evlyn M{\'a}rcia Le{\~a}o 
                         de Moraes and Lorenzzetti, Jo{\~a}o Antonio and Braga, 
                         Cl{\'a}udia Zuccari Fernandes and Lima, Ivan Bergier Tavares de 
                         and Stech, Jos{\'e} Luiz",
          affiliation = "Instituto Nacional de Pesquisas Espaciais, Divis{\~a}o de 
                         Sensoriamento Remoto (INPE, DSR)",
                title = "Aplica{\c{c}}{\~a}o do operador de fragmenta{\c{c}}{\~a}o 
                         assim{\'e}trica (FA)na caracteriza{\c{c}}{\~a}o de controles 
                         geomorfol{\'o}gicos em reservat{\'o}rios hidrol{\'e}tricos",
              journal = "Geoci{\^e}ncias",
                 year = "2004",
               volume = "34",
               number = "4",
                pages = "501--508",
             keywords = "asymmetrical fragmentation operator, geomorphologic controls, 
                         hydro electrical reservoirs, hydrographic basin, Shoreline, 
                         Operador de Fragmenta{\c{c}}{\~a}o Assim{\'e}trica, controles 
                         geomorfol{\'o}gicos, reservat{\'o}rios hidroel{\'e}tricos, 
                         bacias hidrogr{\'a}ficas.",
             abstract = "This paper proposes the use of the Asymmetrical Fragmentation 
                         Operator (FA) to characterize geomorphologic controls affecting 
                         hydroelectrical reservoirs. Landsat-TM images were used to map 
                         reservoirs flooded surface. The FA operator was applied to vector 
                         files describing reservoirs shape to compute the average FA for 
                         each reservoir. The reservoir database was then classified 
                         according to reservoirs hydrographic basin and reservoirs size. 
                         The FA values were compared to the Shoreline Development Index (D) 
                         and to the reservoirs primary productivity data available in the 
                         literature. Results show that the FA is able to detect 
                         high-resolution geomorphologic features, which are not detected by 
                         D. Preliminary results show also that there is a significant 
                         relationship between FA and the primary productivity. This fact, 
                         however, does not hold for D. Moreover, FA showed no sensitivity 
                         to reservoirs size, being more responsive to their position in the 
                         cascade system, and therefore to the hydrographic basin 
                         geomorphology. Resumo Este trabalho prop{\~o}e o uso do Operador 
                         de Fragmenta{\c{c}}{\~a}o Assim{\'e}trica (FA) para a 
                         caracteriza{\c{c}}{\~a}o de controles geomorfol{\'o}gicos que 
                         afetam reservat{\'o}rios hidroel{\'e}tricos. A 
                         superf{\'{\i}}cie alagada pelos reservat{\'o}rios foi 
                         determinada a partir de imagens digitais do sensor TM-Landsat. O 
                         Operador de Fragmenta{\c{c}}{\~a}o Assim{\'e}trica foi aplicado 
                         ao vetor descritor da superf{\'{\i}}cie alagada de cada 
                         reservat{\'o}rio permitindo o c{\'a}lculo de seu FA m{\'e}dio. 
                         Os reservat{\'o}rios foram ent{\~a}o classificados por bacia 
                         hidrogr{\'a}fica e dimens{\~a}o da superf{\'{\i}}cie alagada. 
                         Os valores de FA foram cotejados com o {\'{\i}}ndice de 
                         desenvolvimento das margens (D) dos reservat{\'o}rios e com dados 
                         de produtividade prim{\'a}ria dispon{\'{\i}}veis na literatura. 
                         Os resultados indicam que o FA tem a capacidade de detectar, em 
                         alta resolu{\c{c}}{\~a}o, estruturas geomorfol{\'o}gicas que 
                         passam desapercebidas ao {\'{\i}}ndice D. An{\'a}lises 
                         preliminares indicaram haver rela{\c{c}}{\~a}o entre o grau de 
                         fragmenta{\c{c}}{\~a}o e a produtividade prim{\'a}ria nos 
                         reservat{\'o}rios. Os resultados indicaram que ao contr{\'a}rio 
                         do D, o FA {\'e} pouco sens{\'{\i}}vel {\`a} {\'a}rea do 
                         reservat{\'o}rio, tendo respondido mais {\`a} sua 
                         posi{\c{c}}{\~a}o na cascata, e conseq{\"u}entemente ao 
                         arcabou{\c{c}}o geomorfol{\'o}gico.",
           copyholder = "SID/SCD",
                 issn = "0101-9082",
             language = "pt",
           targetfile = "arcilan.pdf",
        urlaccessdate = "2024, May 02"
}