Land surface deformation can be caused by underground mining activities. The maximum subsidence normally occurs directly above the location of the excavation of the coal seam. In the case where the longwall mining technique is applied, the magnitude and shape of the subsidence bowl are constrained by the longwall structure (pillar). This paper describes the use of satellite radar interferometry for monitoring surface subsidence due to underground mining, as a cost-effective geodetic technique and complementary to conventional ground surveying techniques._x000D_
This paper uses data acquired by the current generation of SAR satellites - the European ENVISAT and the Japanese ALOS - to monitor ground subsidence in the southern highland coalfield in New South Wales, Australia. An accumulated DInSAR subsidence mine map is produced using six successive ALOS acquisitions. The results are post-analysed with the aid of geographic information systems (GIS) and validated using ground survey data._x000D_
FORMAL CITATION:Ge, L, Chang, H-C, Ng, A and Rizos, C, 2008. Spaceborne radar interferometry for mine subsidence monitoring in Australia, in Proceedings First International Future Mining Conference and Exhibition 2008, pp 119-124 (The Australasian Institute of Mining and Metallurgy: Melbourne).