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The Use of GPR on Pseudo-Archaeological Site in UFMG

Autoria e Infos

Paulo Roberto Antunes Aranha Et Al



Ground-Penetrating Radar – GPR (Davis and Annan, 1989) is a technique to image the subsurface soil in high resolution, which allows one to identify some subsurface structures and facies. The wave propagation of radar is controlled by the survey frequency and the electric environment subsurface properties. GPR was used on Pseudo Archaeological Site in the Universidade Federal de Minas Gerais (UFMG) to study what could be the appropriate antennas and settings to survey an archaeological site. Ground-Penetrating Radar emits radios waves ranging from 10 to 3,500 MHz. For our research were used antennae of 200, 500 and 800 MHz, thus, been possible a range of results to compare and notice what could be the appropriate frequency to be used in archaeological researches. The data processing sequence was: dewow, set time zero and remove background. After, analyzing the hyperboles presents on the radargram we could find the velocity and make a depth conversion locating properly the response from the objects buried. Results of GPR agree with the topographic coordinates previously made, and have helped to identify the features observed in the radargram and its corresponding object.

Key-words: GPR, técnicas de imagem, arqueologia, estudos arqueológicos, pseudo-sítio arqueológico

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