Monitoring of non-linear ground movement in an open pit iron mine based on an integration of advanced DInSAR techniques using TerraSAR-X data
| Autor: | Arnaldo de Queiroz da Silva, Fábio Furlan Gama, Waldir Renato Paradella, Aristotelina Silva, Mauricio Galo, Guilherme G. Silva, Paulo de Oliveira Camargo, José Claudio Mura |
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| Přispěvatelé: | National Institute for Space Research (INPE), Universidade Estadual Paulista (Unesp), Universidade Federal do Pará (UFPA), Vale S. A. (DIFN/GEDEN/GAGHN) |
| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
010504 meteorology & atmospheric sciences
Science 0211 other engineering and technologies 02 engineering and technology Open pit iron mine Deformation (meteorology) 01 natural sciences Displacement (vector) law.invention Surface movement Acceleration law DInSAR time-series PSI surface movement open pit iron mine Singular value decomposition Radar 021101 geological & geomatics engineering 0105 earth and related environmental sciences Remote sensing Smoothness Total station Interferometry General Earth and Planetary Sciences Geology |
| Zdroj: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP Remote Sensing, Vol 8, Iss 5, p 409 (2016) Remote Sensing; Volume 8; Issue 5; Pages: 409 |
| Popis: | Made available in DSpace on 2018-12-11T17:03:09Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-01-01 This work presents an investigation to determine ground deformation based on an integration of DInSAR Time-Series (DTS) and Persistent Scatterer Interferometry (PSI) techniques aiming at detecting high rates of linear and non-linear ground movement. The combined techniques were applied in an open pit iron mine located in Carajás Mineral Province (Brazilian Amazon region), using a set of 33 TerraSAR-X-1 images acquired from March 2012 to April 2013 when, due to a different deformation behavior during the dry and wet seasons in the Amazon region, a non-linear deformation was detected. The DTS analysis was performed on a stack of multi-look unwrapped interferograms using an extension of the SVD (Singular Value Decomposition), where a set of additional weighted constraints on the acceleration of the displacement was incorporated to control the smoothness of the time-series solutions, whose objective was to correct the atmospheric phase artifacts. The height errors and the deformation history provided by the DTS technique were used as previous information to perform the PSI analysis. This procedure improved the capability of the PSI technique to detect non-linear movement as well as to increase the numbers of point density of the final results. The results of the combined techniques are presented and compared with total station/prisms and ground-based radar (GBR) measurements. National Institute for Space Research (INPE) São Paulo State University (FCT/UNESP) Federal University of Pará (IG/UFPA) Vale S. A. (DIFN/GEDEN/GAGHN) São Paulo State University (FCT/UNESP) |
| Databáze: | OpenAIRE |
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