| Full text | |
| Author(s): |
Hartwig, Marcos Eduardo
Total Authors: 1
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| Document type: | Journal article |
| Source: | Bulletin of Engineering Geology and the Environment; v. 75, n. 2, p. 605-621, MAY 2016. |
| Web of Science Citations: | 2 |
| Abstract | |
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) | |
| FAPESP's process: | 11/23068-4 - Evaluation of DInSAR technique in Carajás with TerraSAR-X data |
| Grantee: | Marcos Eduardo Hartwig |
| Support Opportunities: | Scholarships in Brazil - Doctorate |