Ms. Carolina Pinto Profile

Carolina Pinto

SPIE Involvement:

Author

Publications (2)

SPIE Journal Paper | 22 December 2015 Open Access

Applying persistent scatterer interferometry for surface displacement mapping in the Azul open pit manganese mine (Amazon region) with TerraSAR-X StripMap data

Carolina de Athayde Pinto, Waldir Renato Paradella, José Claudio Mura, Fabio Furlan Gama, Athos Ribeiro dos Santos, Guilherme Gregório Silva, Marcos Eduardo Hartwig

JARS, Vol. 9, Issue 01, 095978, (December 2015) https://doi.org/10.1117/12.10.1117/1.JRS.9.095978

KEYWORDS: Mining, Picosecond phenomena, Interferometry, Satellites, Manganese, Radar, Synthetic aperture radar, Associative arrays, Interferometric synthetic aperture radar, Prisms

Read Abstract +

DOWNLOAD PAPER

Proceedings Article | 23 October 2014 Paper

Results of the application of persistent scatterers interferometry for surface displacements monitoring in the Azul open pit manganese mine (Carajás province, Amazon region) using TerraSAR-X data

Carolina Pinto, Waldir Paradella, José Mura, Fabio Gama, Athos dos Santos, Guilherme Silva

Proceedings Volume 9245, 92451K (2014) https://doi.org/10.1117/12.2067233

KEYWORDS: Mining, Interferometry, Picosecond phenomena, Manganese, Radar, Synthetic aperture radar, Satellites, Phase interferometry, Prisms, Motion measurement

Read Abstract +

Brazil has 10% of global Mn reserves with its most important mine located in the Amazon region. The Azul deposit is related to sandstones and siltstones of the Águas Claras Formation (Archean), situated in the central portion of the Carajás Strike-Slip System. Vale S.A. mining company operates the Azul mining complex with three simultaneous excavations (mines 1, 2 and 3) conducted on rock materials of low geomechanical qualities. Mining operations are openpit, with 4-8 m-high benches and depth of 80 m. A stack of 19 TerraSAR-X (TSX) images was used for the investigation covering the period of March 20-October 4, 2012. In order to minimize the topography phase error in the interferometric process, a high resolution DEM was generated based on a panchromatic GeoEye-1 stereo pair. Persistent Scatterers Interferometry (PSI) analysis was carried out using the IPTA (Interferometric Point Target Analysis) software and led to the detection of 40,193 point-wise persistent scatterers (PS), with an average density of 5,387 PS/km². It was concluded that most of the mining area can be considered stable during the TSX coverage. High deformation rates related to settlements were mapped over a waste pile, while small deformation rates were detected along the north and south flanks of mine 1and were interpreted as cut slope movements toward the center of the pit. Despite only ground-based radar measurements were available for a short time period during the TSX coverage, and covering a sector of bench walls along the south flank of mine 1, the PSs movement patterns showed concordance with the field measurements. The investigation emphasized the important role that PSI technique can play in planning and risk assessment in this mining area. Monitoring of this type of deformation by PSI can usefully complement other commonly used field geotechnical measurements due to the synoptic SAR coverage over a dense grid, providing ground deformation data independently of field access and with millimeter accuracy.

View contact details

UPDATE YOUR PROFILE

Is this your profile? Update it now.

Sign into your SPIE.org account

Don’t have a profile and want one?

Create an account on SPIE.org

Keywords/Phrases

Search In:

Publication Years