Our study used space-based interferometric synthetic aperture radar (InSAR) and feature tracking on sub-meter-resolution optical imagery pairs to characterize surface deformation resulting from the 4 September 2010 Mw 7.1 Darfield, 22 February 2011 Mw 6.3 Christchurch, and 13 June 2011 Christchurch earthquakes (dates in local time), each of which occurred in the Canterbury region of the South Island of New Zealand. A rapid, coordinated international emergency response is often required when strong-motion earthquakes hit urban areas. Unfortunately in these cases relief workers often have little information about the location or the extent of damage. Remote sensing can rapidly provide maps...

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