Journal
WATER
Volume 12, Issue 9, Pages -Publisher
MDPI
DOI: 10.3390/w12092480
Keywords
fractal tree; small river basin; fractal dimension; Hack's law
Categories
Funding
- National Research Foundation of Korea [NRF-2019R1I1A1A01063063]
- Korea Environment Industry & Technology Institute (KEITI) - Korea Ministry of Environment (MOE) [79610]
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This paper presents the modified framework of geomorphologic analysis based on the concept of fractal tree. Especially, it is intended to provide hydrologic practitioners with the information on the fractal property of small river basins. To this end, the complete drainage path network is applied to a growth process of a fractal tree for the basin of interest by connecting a channel network to overland drainage pathways. The growth process of a fractal tree would occur only within the limited region possessing channel flow properties in a natural river basin. The exponent of the intra basin type of Hack's law could show a variable trend in small river basins mainly due to anisotropic property of the catchment planform. The bifurcation process of a drainage path network might be more sensitive to the growth step of the fractal tree than the meandering process of drainage path segment. The fractal dimension from the sinuosity of a channel segment is relatively stable compared to the one from the bifurcation process of the network, so that the geomorphologic features of a small river basin can be characterized by the anisotropic property of catchment planform as well as the bifurcation property of drainage path network with the growth of the fractal tree.
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