| Title | Multi-temporal SAR observations of the Surat Basin in Australia for deformation scenario evaluation associated with man-made interactions |
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| Author | Moghaddam, N F; Samsonov, S V ; Rudiger, C; Walker, J P; Hall, W D M |
| Source | Environmental Earth Sciences vol. 75, no. 282, 2016, 16 pages, https://doi.org/10.1007/s12665-015-4864-y |
| Image |  |
| Year | 2016 |
| Alt Series | Natural Resources Canada, Contribution Series 20170206 |
| Publisher | Springer Nature |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| File format | pdf |
| Area | Surat Basin; Australia |
| Lat/Long WENS | -150.0000 151.2500 -26.2500 -27.5000 |
| Subjects | remote sensing; deformation; radar imagery; radar methods; modelling; coal mining; coal seams; coal fields; groundwater movement; groundwater circulation; mining activities; PSInSARTM; SBAS
approach |
| Illustrations | satellite images; location maps; tables; graphs; plots; histograms |
| Released | 2016 02 09 |
| Abstract | Human activities for extracting natural resources, may lead to subsequent gradual or abrupt surface deformation, with adverse effects in the local ecosystem and damage to man-made structures. Over the
past two decades, interferometric SAR (InSAR) has been demonstrated as the optimal remote sensing technique to estimate surface deformation with high spatial coverage and vertical
accuracy over traditional surveying methods. In this paper, the
outcome of advanced differential InSAR processing to detect and analyze ground surface behavior due to manmade interactions are presented. An improvement was achieved in the temporal resolution and accuracy using a unique combination of both C-band
and L-band SAR satellite acquisitions with different temporal and spatial baselines. The two alternate DInSAR methodologies were applied on the northeastern part of the Surat Basin, Australia for an area without long-term ground-based geodetic
observations. The regions undergoing downward motion are located above coal seam gas (CSG) mining sites with rates up to 28 mm/year. Three scenarios were identified: (1) extensive groundwater extraction from shallow aquifers due to CSG mining, (2)
CSG mining without direct impact on groundwater resources and (3) patchy uplift over an industrial forest adjacent to a CSG mining district. Contrary to a previous study conducted in this region using the PSInSARTM technique which reported stability
of the
area with insignificant surface deformation, this study shows that there are considerable deformation signals consistent with resource extraction. Consequently, it is shown that the SBAS approach is superior to PSInSARTM for deformation
monitoring with focusing on naturally distributed scatterers. |
| GEOSCAN ID | 305976 |
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