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Correction published on 15 September 2021, see Minerals 2021, 11(9), 1005.
Article

Estimation of Mining-Induced Horizontal Strain Tensor of Land Surface Applying InSAR

Department of Mining Areas Protection, Geoinformatics and Mining Surveying, Faculty of Mining Surveying and Environmental Engineering, AGH University of Science and Technology, 30-059 Cracow, Poland
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Author to whom correspondence should be addressed.
Academic Editor: Javier Fernández Lozano
Minerals 2021, 11(7), 788; https://doi.org/10.3390/min11070788
Received: 1 June 2021 / Revised: 16 July 2021 / Accepted: 18 July 2021 / Published: 20 July 2021
Horizontal strains related to mining-induced subsidence may endanger infrastructure and surface users’ safety. While directional horizontal strains should be well determined, appropriate solutions for a complete assessment of the terrain surface deformation field are still required. As a result, the presented study examined a new method for calculating horizontal strain tensor based on the decomposition of satellite radar interferometry (InSAR) observations into vertical and azimuth look direction (ALD) displacements. Based on a geometric integral model, we tested our method on experimental data before applying it to an underground copper ore mine in Poland. In the case study, the displacement field was determined using the Multi-Temporal InSAR method on Sentinel-1 data. The model data relative error did not exceed 0.02 at σ = ±0.003. For the case study, land subsidence of up to −167 mm and ALD displacements ranging from −110 mm to +62 mm was obtained, whereas the extreme values of horizontal strains ranged from −0.52 mm/m to +0.36 mm/m at σ = ±0.050 mm/m. Our results demonstrate the high accuracy of the method in determining the horizontal strain tensor. As a result, the approach can broaden the assessment of the environmental impact of land subsidence worldwide. View Full-Text
Keywords: deformation tensor; satellite radar interferometry; InSAR decomposition; geostatistics; land subsidence deformation tensor; satellite radar interferometry; InSAR decomposition; geostatistics; land subsidence
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MDPI and ACS Style

Witkowski, W.T.; Łukosz, M.; Guzy, A.; Hejmanowski, R. Estimation of Mining-Induced Horizontal Strain Tensor of Land Surface Applying InSAR. Minerals 2021, 11, 788. https://doi.org/10.3390/min11070788

AMA Style

Witkowski WT, Łukosz M, Guzy A, Hejmanowski R. Estimation of Mining-Induced Horizontal Strain Tensor of Land Surface Applying InSAR. Minerals. 2021; 11(7):788. https://doi.org/10.3390/min11070788

Chicago/Turabian Style

Witkowski, Wojciech T., Magdalena Łukosz, Artur Guzy, and Ryszard Hejmanowski. 2021. "Estimation of Mining-Induced Horizontal Strain Tensor of Land Surface Applying InSAR" Minerals 11, no. 7: 788. https://doi.org/10.3390/min11070788

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