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@TechReport{Valeriano:2002:MoDiEl,
               author = "Valeriano, M{\'a}rcio de Morisson",
                title = "Modelos digitais de eleva{\c{c}}{\~a}o de microbacias elaborados 
                         com krigagem",
          institution = "INPE",
                 year = "2002",
                 type = "RPQ",
               number = "INPE-9364-RPQ/736",
              address = "S{\~a}o Jos{\'e} dos Campos",
             keywords = "GEOPROCESSAMENTO, microbacia, krigagem, metodologia, topografia, 
                         Modelo Digital de eleva{\c{c}}{\~a}o, Sistemsa de 
                         Informa{\c{c}}{\~a}o Geogr{\'a}fica (SIG), 
                         geoestat{\'{\i}}stica,, Digital Elevation Models (DEM), 
                         watershed, Geographical Information Systems, GIS, kriging, 
                         geostatistical.",
             abstract = "O objetivo deste trabalho foi avaliar a krigagem como m{\'e}todo 
                         de forma{\c{c}}{\~a}o de Modelo Digital de eleva{\c{c}}{\~a}o 
                         (MDE)para estudos em microbacias. Os pontos fornecidos pelas 
                         isolinhas digitalizadas foram submetidos aos processos de 
                         amostragem, an{\'a}lise geoestat{\'{\i}}stica e 
                         interpola{\c{c}}{\~a}o, em encadeamento n{\~a}o- linear. os 
                         resultados foram avaliados quanto {\`a} eleva{\c{c}}{\~a}o, 
                         diretamente, e {\`a} declividade calculada em Sistema de 
                         Informa{\c{c}}{\~a}o Geogr{\'a}fica (SIG), em 
                         compara{\c{c}}{\~a}o com MDE gerados mediante 
                         interpola{\c{c}}{\~a}o linear e Inverso do Quadrado da 
                         Dist{\^a}ncia (IQD). Com dados de 6 microbacias de diferentes 
                         caracter{\'{\i}}sticas e relevo e diferentes 
                         especifica{\c{c}}{\~o}es cartogr{\'a}ficas, os MDE krigados 
                         apresentaram boa flexibilidade, representando e modo relativamente 
                         satisfat{\'o}rio as varia{\c{c}}{\~o}es locais das diferentes 
                         {\'a}reas, com fei{\c{c}}{\~o}es harmoniosas e arredondadas bem 
                         como fei{\c{c}}{\~o}es abruptas do terreno. A 
                         aprecia{\c{c}}{\~a}o visual de superf{\'{\i}}cies e perfis de 
                         relevo e a an{\'a}lise de histogramas da declividade levaram 
                         {\`a} conclus{\~a}o de que os interpoladores lineares e IQD, a 
                         despeito de sua popularidade, trazem s{\'e}rias 
                         limita{\c{c}}{\~o}es ao uso dos respectivos MDE na an{\'a}lise 
                         quantitativa de dados topogr{\'a}ficos para microbacias. 
                         ABSTRACT: This research was conducted to evaluate kriging as a 
                         method for the generation of Digital Elevation Models (DEM)for 
                         watershed studies. The points stored by the digitizing of the 
                         contour lines were submitted to sampling, geostatistical analyses 
                         and interpolation procedures, in a non-linear data flux. The 
                         evaluation of the results concerned to the elevation itself and to 
                         the slope angles, calculated by Geographical Information Systems 
                         (GIS), as compared to those obtained from DEM created through 
                         linear interpolation and Inverse Squared Distance (ISD)methods. 
                         Among 6 watersheds with different relief types and cartographycal 
                         data specifications, kriged DEM showed flexibility to yield 
                         relatively adequate representations of the local variations of the 
                         different areas, with round and harmonic features, as well as 
                         abrupt terrain changes. Visual observations of the surfaces and 
                         relief profiles, and analyses of slope results histograms led to 
                         the conclusion that linear and ISD interpolators, despite their 
                         popularity, bring serious limitations to the use of the 
                         correponding DEM for the quantitative analysis of watershed 
                         topographical data.",
          affiliation = "{Divis{\~a}o de Sensoriamento Remoto (INPE)}",
           copyholder = "SID/SCD",
                label = "10320",
             language = "pt",
                pages = "54",
                  ibi = "6qtX3pFwXQZ3r59YD6/GPAxC",
                  url = "http://urlib.net/rep/6qtX3pFwXQZ3r59YD6/GPAxC",
           targetfile = "mde_krig3.pdf",
        urlaccessdate = "2020, Oct. 24"
}


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