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Nepal quake: RMT maps also reveal devastating ground deformation

After the co-seismic interferogram, TRE produces Rapid Motion Tracking (RMT) maps to continue the analysis on ground deformation during Nepal quake.

As in the name itself, RMT provides rates of ground motion when fast movements occur (in order of centimeters/meters). In contrast with SAR Interferometry, which uses the phase value, RMT extracts motion rates from the amplitude value of radar images.

Based on images acquired by the Sentinel-1A satellite over Nepal, before and after the quake of the 25th April 2015, RMT maps in both the line-of-sight (range) and azimuth (north-south) directions are shown below.

You can browse the results in our web platform TREmaps, simply clicking on image links

Click for large view