Monitoring of surface deformation in open pit mine using DInSAR time-series: A case study in the N5W iron mine (Carajás, Brazil) using TerraSAR-X data

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dc.contributor.authorMura, José C.
dc.contributor.authorParadella, Waldir R.
dc.contributor.authorGama, Fabio F.
dc.contributor.authorSantos, Athos R.
dc.contributor.authorGalo, Mauricio [UNESP]
dc.contributor.authorCamargo, Paulo O. [UNESP]
dc.contributor.authorSilva, Arnaldo Q.
dc.contributor.authorSilva, Guilherme G.
dc.contributor.institutionNational Institute for Space Research (INPE)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade Federal do Pará (UFPA)
dc.date.accessioned2018-12-11T16:57:08Z
dc.date.available2018-12-11T16:57:08Z
dc.date.issued2014-01-01
dc.description.abstractWe present an investigation of surface deformation using Differential SAR Interferometry (DInSAR) time-series carried out in an active open pit iron mine, the N5W, located in the Carajás Mineral Province (Brazilian Amazon region), using 33 TerraSAR-X (TSX-1) scenes. This mine has presented a historical of instability and surface monitoring measurements over sectors of the mine (pit walls) have been done based on ground based radar. Two complementary approaches were used: the standard DInSAR configuration, as an early warning of the slope instability conditions, and the DInSAR timeseries analysis. In order to decrease the topographic phase error a high resolution DEM was generated based on a stereo GeoEye-1 pair. Despite the fact that a DinSAR contains atmospheric and topographic phase artifacts and noise, it was possible to detect deformation in some interferometric pairs, covering pit benches, road ramps and waste piles. The timeseries analysis was performed using the 31 interferometric pairs, which were selected based on the highest mean coherence of a stack of 107 interferograms, presenting less phase unwrapping errors. The time-series deformation was retrieved by the Least-Squares (LS) solution using an extension of the Singular Value Decomposition (SVD), with a set of additional weighted constrain on the acceleration deformation. The atmospheric phase artifacts were filtered in the space-time domain and the DEM height errors were estimated based on the normal baseline diversity. The DInSAR time-series investigation showed good results for monitoring surface displacement in the N5W mine located in a tropical rainforest environment, providing very useful information about the ground movement for alarm, planning and risk assessment.en
dc.description.affiliationNational Institute for Space Research (INPE)
dc.description.affiliationSão Paulo State University (FCT/UNESP)
dc.description.affiliationFederal University of Pará (IG/UFPA)
dc.description.affiliationUnespSão Paulo State University (FCT/UNESP)
dc.identifierhttp://dx.doi.org/10.1117/12.2066886
dc.identifier.citationProceedings of SPIE - The International Society for Optical Engineering, v. 9243.
dc.identifier.doi10.1117/12.2066886
dc.identifier.file2-s2.0-84922648065.pdf
dc.identifier.issn1996-756X
dc.identifier.issn0277-786X
dc.identifier.scopus2-s2.0-84922648065
dc.identifier.urihttp://hdl.handle.net/11449/171779
dc.language.isoeng
dc.relation.ispartofProceedings of SPIE - The International Society for Optical Engineering
dc.rights.accessRightsAcesso aberto
dc.sourceScopus
dc.subjectAmazon Region
dc.subjectDInSAR time-series
dc.subjectOpen pit iron mine
dc.subjectSurface deformation
dc.subjectTerraSAR-X
dc.titleMonitoring of surface deformation in open pit mine using DInSAR time-series: A case study in the N5W iron mine (Carajás, Brazil) using TerraSAR-X dataen
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