Estimation of local rainfall erosivity using artificial neural network

  • Teodorico Alves Sobrinho Universidade Federal de Mato Grosso do Sul
  • Caroline Alvarenga Pertussatti Universidade de Brasilia, UnB
  • Lais Cristina Soares Rebucci Universidade Federal de Mato Grosso do Sul
  • Paulo Tarso Sanches Oliveira Universidade de São Paulo, USP
Keywords: artificial intelligence, soil conservation, water erosion

Abstract

The information retrieval of local values of rainfall erosivity is essential for soil loss estimation with the Universal Soil Loss Equation (USLE), and thus is very useful in soil and water conservation planning. In this manner, the objective of this study was to develop an Artificial Neural Network (ANN) with the capacity of estimating, with satisfactory accuracy, the rainfall erosivity in any location of the Mato Grosso do Sul state. We used data from rain erosivity, latitude, longitude, altitude of pluviometric and pluviographic stations located in the state to train and test an ANN. After training with various network configurations, we selected the best performance and higher coefficient of determination calculated on the basis of data erosivity of the sample test and the values estimated by ANN. In evaluating the results, the confidence and the agreement indices were used in addition to the coefficient of determination. It was found that it is possible to estimate the rainfall erosivity for any location in the state of Mato Grosso do Sul, in a reliable way, using only data of geographical coordinates and altitude.

Author Biography

Teodorico Alves Sobrinho, Universidade Federal de Mato Grosso do Sul
Programa de Pós Graduação em Tecnologias Ambientais da UFMS - Área de Engenharia de Água e Solos.
Published
22/08/2011
Section
Papers