Estimativas de teores de umidade de solos empregando o método GPR em área de escorregamentos em Ubatuba/SP

Ground penetrating radar (GPR) reflection and direct travel time data were used to estimate soil water content in two unstable hillside areas in the city of Ubatuba, state of São Paulo, Brazil. Data were collected during five different campaigns over a period of one year using multioffset geometry with 100 MHz and 200 MHz antennas. The moisture content data obtained by the reflection travel time data allowed to construct 1D profile up to 10 meters depth, but did not show a significant seasonal variations. However, it was observed for the surface horizon by the exam of the direct travel time.