| Texto completo | |
| Autor(es): |
Hartwig, Marcos Eduardo
Número total de Autores: 1
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| Tipo de documento: | Artigo Científico |
| Fonte: | Bulletin of Engineering Geology and the Environment; v. 75, n. 2, p. 605-621, MAY 2016. |
| Citações Web of Science: | 2 |
| Resumo | |
Differential synthetic aperture radar interferometry (DInSAR) is a space-geodetic technique which allows minute surface displacements over vast areas to be detected with centimetric accuracy. Because of these unique characteristics, the DInSAR approach has great advantages over classical geodetic monitoring systems that allow the anticipation of high-risk situations. In the past few decades, it has been successfully applied in many areas of the earth and environmental sciences. However, there have been very few applications of this approach to active open pit mines in tropical environments. In this work, the DInSAR technique was applied to detect and monitor unknown surface displacements that may be occurring in the N4W iron mine, northern Brazil. X-band data acquired from March 2012 to April 2013 during the TerraSAR-X satellite mission were utilized for this purpose. The results were checked in the field and compared to optical leveling data. Due to the consistent deformation pattern observed over a mine waste pile, Pile W, we also performed numerical modeling in order to carry out a preliminary assessment of its theoretical deformation behavior. The results show that most of the study area can be considered to be stable. The numerical modeling indicated that horizontal displacements may be occurring, and that the DInSAR technique can be used to provide an initial rapid assessment of a large-scale deformation field, which could prove to be very useful, particularly in large active mining areas. (AU) | |
| Processo FAPESP: | 11/23068-4 - Avaliação da técnica DInSAR em Carajás com dados TerraSAR-X |
| Beneficiário: | Marcos Eduardo Hartwig |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 10/51267-9 - Detecção e monitoramento de estabilidade de taludes e deformações superficiais em mina a céu aberto através de técnicas avançadas de interferometria diferencial de radar: uma avaliação na mina de ferro N4 (Carajás) utilizando dados do satélite TerraSAR-X |
| Beneficiário: | Waldir Renato Paradella |
| Modalidade de apoio: | Auxílio à Pesquisa - Parceria para Inovação Tecnológica - PITE |