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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Infiltration distribution rates on areas affected by rapid erosive process and covered by anthropogenic materials

Full text
Author(s):
Dener Toledo Mathias [1] ; Cenira Maria Lupinacci [2] ; Rodrigo Braga Moruzzi [3]
Total Authors: 3
Affiliation:
[1] Universidade Federal de Mato Grosso - Brasil
[2] Universidade Estadual Paulista “Júlio de Mesquita Filho” - Brasil
[3] Universidade Estadual Paulista “Júlio de Mesquita Filho” - Brasil
Total Affiliations: 3
Document type: Journal article
Source: Engenharia Sanitária e Ambiental; v. 23, n. 5, p. 923-931, 2018-10-22.
Abstract

ABSTRACT In this paper, infiltration distribution rates were evaluated on areas affected by accelerated erosive processes and covered by anthropogenic material. Infiltration tests were performed at several samples distributed in the area. The data were adjusted to the Horton decay function, and its parameters were correlated with attributes of the physical environment and the terrain digital model, using the Pearson correlation coefficient (r). Results pointed out great variability of infiltration rates, due to the complexities generated by several structural interventions in the different sectors sampled, with different morphological, granulometric and land use variables. The analysis made sector by sector here proposed allowed verifying the main variables that interfere in the parameters that represent the infiltration rates, in spite of the spatial variability for infiltration rates. In low-slope sectors, there was a strong correlation between infiltration rates and sand, as well as between these rates and river distance. In high slope and grassland areas, such correlations are high between the final infiltration rates and the fine materials (clay and clay + silt). In high-slope areas with no vegetation coverage, the strongest correlations occur between the final infiltration and the cumulative runoff flow. Therefore, results here presented emphasize that both the characteristics of the cover materials and the morphology of the land are determinant for data analysis. (AU)

FAPESP's process: 09/03669-3 - Proposals for recovery of eroded peri-urban areas based on hydrologic and geomorphologic parameters
Grantee:Dener Toledo Mathias
Support Opportunities: Scholarships in Brazil - Master