4.7 Article

Organization Patterns of Complex River Networks in Chile: A Fractal Morphology

Journal

MATHEMATICS
Volume 10, Issue 11, Pages -

Publisher

MDPI
DOI: 10.3390/math10111806

Keywords

river networks; chilean watersheds; fractal dimension; basin morphometry; structural control

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Funding

  1. Vicerrectoria de Investigacion from the Pontificia Universidad Catolica de Valparaiso (PUCV) [039.352/2021]

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This study estimated the fractal dimension of Chilean river networks for the first time and analyzed their distribution at different scales. The results suggest that the fractal dimension can help describe the complex morphology of Chilean networks and its relationship with hydrological, climatic, and tectonic conditions.
River networks are spatially complex systems difficult to describe by using simple morphological indices. To this concern, fractal theory arises as an interesting tool for quantifying such complexity. In this case of study, we have estimated for the first time the fractal dimension of Chilean networks distributed across the country, analysed at two different scales. These networks insert into variable environments, not only from a climatic and hydrological point of view, but also from a morphological point of view. We investigate to which extent the fractal dimension is able to describe the apparent disorganized character of landscape, by applying two methods. Striking patterns of organization related to Horton ratios and the fractal dimension are reported and discussed. This last parameter depends on the scale of the network, showing interesting groupings by tectonic and climatological factors. Our results suggest that under restricted conditions, the fractal dimension could help to capture the intricate morphology of Chilean networks and its links with the hydrological, climatic, and tectonic conditions present across the country.

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