coal mining
; ground motion
; radar interferometry
; spatial analysis
; synthetic aperture radar
; uplift
; South Wales Coalfield
; United Kingdom
; Wales
英文摘要:
Satellite radar interferometry is a well-documented technique for the characterisation of ground motions over large spatial areas. However, the measurement density is often constrained by the land use, with best results obtained over urban and semi urban areas. We use an implementation of the Small Baseline Subset (SBAS) methodology, where by areas exhibiting intermittent coherence are considered alongside those displaying full coherence, in the final result, to characterise the ground motion over the South Wales Coalfield, United Kingdom. 55 ERS-1/2 Synthetic Aperture Radar (SAR) C-band images for the period between 1992 and 1999 are processed using the ISBAS (Intermittent Small BAseline Subset) technique, which provides 3.4 times more targets, with associated measurements than a standard SBAS implementation. The dominant feature of the observed motions is a relatively large spatial area of uplift. Uplift rates are as much as 1 cm/yr. and are centred on the part of the coalfield which was most recently exploited. Geological interpretation reveals that this uplift is most likely a result of mine water rebound. Collieries in this part of the coalfield required a ground water to be pumped to enable safe coal extraction; following their closure pumping activity ceased allowing the water levels to return to equilibrium. The ISBAS technique offers significant improvements in measurement density ensuring an increase in detection of surface motions and enabling easier interpretation. � 2014 Elsevier B.V.
British Geological Survey (BGS), Keyworth, Nottinghamshire, United Kingdom; British geological Survey (BGS), Tongwynlais, Cardiff, United Kingdom; Nottingham Geospatial Institute, University of Nottingham, Nottingham, United Kingdom
Recommended Citation:
Bateson L,, Cigna F,, Boon D,et al. The application of the intermittent SBAS (ISBAS) InSAR method to the South Wales Coalfield, UK[J]. International Journal of Applied Earth Observation and Geoinformation,2015-01-01,34(1)