Characterisation Of The Spatial Variability Of
Waterlogging In The Blue River Basin
(Argentina)
Author(s)
Y. Villacampa, P. Sastre, M. Gandini, A. Cañibano
& M. Cortés
Abstract
Considering the soil as a complex, dynamic and heterogeneous system, chaos
theory is a useful tool for gaining new knowledge into its variability. Fractal
geometry has a close relationship with chaos theory, which describes dynamic
and chaotic events with a development in time and space that can be predicted
probabilistically. Furthermore, the concept of fractal dimension can also be
applied to the study of spatial and temporal phenomena that possess and retain
some kind of irregular geometric pattern within a range of scales. It is
increasingly used to characterise the various properties of soil and to describe
and model the characteristic functions of water retention and mobility in soil.
This study is based on the need to estimate waterlogging of agro-livestock farms
in the Blue River Basin (6,237 km2), with a view to recommending the type of
land use for each plot. By analysing Landsat satellite images, those with no cloud
cover were adjusted spatially in order to build mosaics for eight points in time
covering the entire study area. The images were then rated and processed,
resulting in eight binary masks of non-flooded / waterlogged areas.
This paper presents a method for calculating the fractal dimension based on
the box counting process, in order to test its use in differentiating between
varying degrees and distributions of soil moisture. The results indicate eight
situations of soil moisture by means of the fractal dimensions calculated using
this method. Using the parallelism test, the slopes of the simple adjusted linear
Keywords
fractal, soil moisture, dynamic system
Related Book
Other papers in this volume
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