@Article{MouraBeTeMeCuCa:2021:InDiRe,
               author = "Moura, Ma{\'{\i}}ra M. de and Beskow, Samuel and Terra, 
                         Fabr{\'{\i}}cio S. and Mello, Carlos Rog{\'e}rio de and Cunha, 
                         Zandra A. da and Cassalho, Fel{\'{\i}}cio",
          affiliation = "{Universidade Federal de Pelotas (UFPel)} and {Universidade 
                         Federal de Pelotas (UFPel)} and {Universidade Federal dos Vales do 
                         Jequitinhonha e Mucuri (UFVJM)} and {Universidade Federal de 
                         Lavras (UFLA)} and {Universidade Federal de Pelotas (UFPel)} and 
                         {Instituto Nacional de Pesquisas Espaciais (INPE)}",
                title = "Influence of different relief information sources on the 
                         geomorphological characterization of small watersheds",
              journal = "Anais da Academia Brasileira de Ci{\^e}ncias",
                 year = "2021",
               volume = "93",
               number = "3",
                pages = "e20191317",
             keywords = "Advanced Spaceborne Emission and Reflection Radiometer, Digital 
                         Elevation Model, geomorphological attributes, Shuttle Radar 
                         Topographic Mission, TOPO DEM.",
             abstract = "Mathematical models have been widely used to quantify hydrological 
                         processes for various practical purposes. These models depend on 
                         geomorphological attributes which are derived from relief 
                         information represented by Digital Elevation Models (DEM). The 
                         objective of this study was to evaluate the influence of relief 
                         information sources (ASTER, SRTM-30, SRTM-90, and TOPO) over 
                         geomorphological characterization of five Brazilian watersheds. 
                         Geoprocessing tools were applied for extraction of the following 
                         geomorphological attributes for each DEM: drainage area, 
                         perimeter, and watershed slope; length and slope of the main 
                         stream; total length of streams; bifurcation, stream length and 
                         stream area ratios; and length of the highest order stream. The 
                         differences in the values of attributes were calculated in 
                         relation to the reference DEM (TOPO). It was found that: i) slope 
                         of main stream and bifurcation ratio were the most sensitive 
                         parameters regarding the relief information source; ii) flat 
                         watersheds were more susceptible to altimetric errors; iii) ASTER 
                         did not adequately represent drainage networks for flat 
                         watersheds; and iv) the differences in the geomorphological 
                         attributes increased as drainage area decreased. The results 
                         indicate that DEM may exert influence on the use of hydrological 
                         models that depend on geomorphological attributes.",
                  doi = "10.1590/0001-3765202120191317",
                  url = "http://dx.doi.org/10.1590/0001-3765202120191317",
                 issn = "0001-3765",
             language = "en",
           targetfile = "moura_influence.pdf",
        urlaccessdate = "20 maio 2024"
}