%0 Conference Proceedings
%4 sid.inpe.br/marte2/2017/10.27.13.56.29
%2 sid.inpe.br/marte2/2017/10.27.13.56.30
%@isbn 978-85-17-00088-1
%F 59922
%T Extração de parâmetros físicos de bacias hidrográficas através da segmentação por trechos de mesmo comprimento com o IPH-Hydro Tools
%D 2017
%A Brêda, João Paulo Lyra Fialho,
%A Siqueira, Vinícius Alencar,
%A Fleischmann, Ayan Santos,
%A Fan, Fernando Mainardi,
%A Ruhoff, Anderson Luis,
%@electronicmailaddress joaopaulolfb@gmail.com
%E Gherardi, Douglas Francisco Marcolino,
%E Aragão, Luiz Eduardo Oliveira e Cruz de,
%B Simpósio Brasileiro de Sensoriamento Remoto, 18 (SBSR)
%C Santos
%8 28-31 maio 2017
%I Instituto Nacional de Pesquisas Espaciais (INPE)
%J São José dos Campos
%P 4811-4818
%S Anais
%1 Instituto Nacional de Pesquisas Espaciais (INPE)
%X Distributed Hydrological Models (DHM) are important tools for studies related to water resources. In these models a basin is segmented in several calculation units in order to account for its spatial variability. A common method is to discretize the basin in catchments delimited by river confluences, usually producing a large variability of reach lengths. However, some particular flow routing methods coupled to DHMs are very sensitive to the length of reaches, which can result in shortcomings regarding model instabilities and computational efficiency. In this study, an alternative to the segmentation method based on river confluences is presented. The proposed method basically divides the drainage network in equal length reaches. A comparison of physical parameters such as catchment quantity and area, river lengths and mean slope was carried out using the Taquari-Antas (RS) basin as a study case. River reaches length size tested were 30 km, 15 km, 10 km, 5 km and 1 km and later compared with the traditional confluence segmentation method. In conclusion, the proposed method had successfully eliminated small reaches; however, it was shown that the area threshold to create the drainage lines should be evaluated regarding the river reach length used on the segmentation method to generate approximately same size catchments.
%9 Recursos hídricos
%@language pt
%3 59922.pdf