1. Applied Nuclear Physics Laboratory, Department of Physics, Universidade Estadual de Londrina, UEL, Londrina, Paraná, Brazil
2. Department of Geography, Universidade Estadual do Centro-Oeste, Irati, Paraná, Brazil
3. Department of Geography, Soil Erosion Laboratory, Universidade Estadual do Centro-Oeste, Guarapuava, Paraná, Brazil