InSAR- Interferometric Synthetic Aperture RADAR (Radio Detection And Ranging) is a powerful technique that will allow us to gather the necessary information to understand active Earth processes and environmental changes.

An InSAR satellite passing over a point before and after an earthquake can measure how the ground shifts. The phase of the radar wave changes between two passes if a point on the ground moves. An InSAR image of the point by point phase difference of the wave on the surface is used to create a map of the movement of the surface over time. InSAR can take observations through cloud cover, without sunlight, and can measure changes in the surface as small as the width of a pencil.