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Master's Dissertation
DOI
https://doi.org/10.11606/D.18.2016.tde-08012016-133424
Document
Author
Full name
Maria Helena Rodrigues Gomes
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Carlos, 1997
Supervisor
Committee
Chaudhry, Fazal Hussain (President)
Reis, Luisa Fernanda Ribeiro
Zuquette, Lázaro Valentin
Title in Portuguese
Análise fractal de redes de canais de bacias hidrográficas na escala 1:50.000
Keywords in Portuguese
Bacias hidrográficas
Dimensão fractal
Geomorfologia
Abstract in Portuguese
Pesquisas têm sido realizadas visando a investigação das características fractais das redes de drenagem de bacias hidrográficas, com base na geomorfologia clássica proposta por HORTON (1945). A dimensão fractal foi introduzida na hidrologia por MANDELBROT (1977) e usada por vários autores, com intuito de analisar as características das redes de drenagem. O presente trabalho explora este conceito, utilizando três bacias hidrográficas do estado de São Paulo. Analisaram-se os mapas topográficos das bacias a fim de obter-se os parâmetros geomorfológicos necessários. Realizou-se a análise da dimensão fractal por métodos gráficos, como também a relação entre a dimensão fractal e as razões de Horton. Os resultados obtidos foram comparadas com aqueles encontrados na literatura e verificou-se que as bacias hidrográficas, usadas nesta pesquisa, podem ser vistas como objetos fractais com uma dimensão fractal característica.
Title in English
Fractal analysis of hydrographic basin drainage network
Keywords in English
Fractal dimension
Geomorphology
Hydrographic basin
Abstract in English
There have been a number of investigations on the fractal characteristics of hydrographic basin drainage networks on the basis in the classical geomorfological proposed by HORTON (1945). The fractal dimension was introduced in hydrology by MANDELBROT (1977) and used by various authors in order to analyse drainage network characteristics. This study explores this concept in three hydrographic basins in the State of São Paulo. The topographic maps were employed to obtain the geomorphological parameters and fractal dimensions. Fractal analysis was performed by graphical methods and the relationship between fractal dimensions and Horton geomorphological laws was studied. The results obtained in this study are compared to those found in literature. It is verified that the basin employed in this research may be considered as fractal objects with a characteristic fractal dimension.
 
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Publishing Date
2016-01-08
 
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