Terrafirma product : interpretation report. V1.1 : Northumberland

This report presents the findings of the BGS value adding of the Persistent Scatterer Interferometry (PSI) ground motion data for the Northumberland region of the UK. PSI results have been produced, by FugroNPA, using descending ERS and Envisat data. The availability of ascending data was insufficient to produce PSI results therefore DifSAR analysis has been carried out for these datasets. The Northumberland and Durham area in the North East of the UK is a region with a long history of coal mining. As such the UK Coal Authority is interested in investigating techniques for the verification of mining-related subsidence claims in this area. The PSI technique offers a means of measuring terrain motion over wide areas and therefore has possible applications to the verification of mining-related subsidence claims. The Terrafirma study area extends for 50 km from Durham in the south to Ashington in the north; it is 20 km wide and includes Newcastle upon Tyne, Sunderland, Gateshead and South Shields.