f land Motion Observed by DlnSAR in the South Derbyshire and leicestershire Coalfield

In this paper we examine the results of an advanced differential interferometric SAR (DlnSAR) survey of a former coal mining area in the UK. The specific technique used, called the Intermittently Coherent Point (ICP) method, is based on the small baseline subset (SBAS) method which takes a stack of SAR observations and estimates linear and non-linear motion through the analysis of a subset ofthe available differential interferograms. The method is able to significantly resolve such measurements in rural areas, currently a limitation ofthe standard SBAS technique. The area of interest is the National Forest area around the towns of Swadlincote and Coalville in the East Midlands of the UK. 32 ENVISAT ASAR observations over the period from 2003-2009 were used in the analysis and the results show clear areas of uplift corresponding to the coal measures of mines that were abandoned in the early 1990s. It has been suggested that the uplift is due to groundwater recovery after mine closure. Furthermore, there is a very strong relationship between the areas of uplift and the faults in the area.