Metodologia para correlacionar a umidade, compactação e a condutividade elétrica aparente do solo

• Autor(a) principal: Silva Filho, Antônio Marcelino da
• Data de Publicação: 2014
• Tipo de documento: Dissertação
• Idioma: por
• Título da fonte: Repositório Institucional da UFG
• Texto Completo: http://repositorio.bc.ufg.br/tede/handle/tede/4960
• topic: Prospecção geoelétrica; Condutividade elétrica aparente do solo; Caminhamento elétrico; Geoelectrical prospecting; Soil apparent electrical conductivity; Lateral profling; ENGENHARIA ELETRICA::MEDIDAS ELETRICAS, MAGNETICAS E ELETRONICAS; INSTRUMENTACAO

This work presents the study of the relationship between soil apparent electrical resistivity ρa and the moisture content, clay content and soil compaction, for use of the ρa as a mapping tool of spatial soil variability. The values of apparent electrical resistivity are obtained by geoelectrical prospecting methods that detect the effects produced by the flow of electrical current in the soil. It is used the Wenner array and the technique of Lateral Profiling for data collection. It was held measures of ρa in different soil types, varying moisture content gradually while maintaining a constant compaction, and then varying the compaction and relating it to a constant humidity. To the study of spatial variability, it was chose two areas that would enable the change of moisture and compaction content, in order to verify the measurement capacity of ρa as methodology of identification of change in soil dynamics. The results obtained are presented and discussed.