Surface deformation (Line of sight) observed by Radarsat-2 InSAR over Southern Ontario, Canada

The study is to exam if surface deformation occurs in southern Ontario and and if so, if it is related to changes in water storage change. The surface deformation data (unit: cm), derived from a set of 48 Radarsat-2 InSAR images over five years (from Jan. 2013 to Sept. 2017), presents a surface subsidence trend from 2013 to 2017 with a mean annual rate of 1-10 mm/year and a seasonal variation of up to 20 mm over the region. The comparisons of the InSAR observed surface deformation and horological data indicate that the surface deformation in southern Ontario could be caused by water loading.