Category Archives: Earth Observation

COMET commentary on satellite InSAR – Nature Communications

How satellite InSAR has grown from opportunistic science to routine monitoring over the last decade

COMET Deputy Director (Volcanoes), Prof. Juliet Biggs, and COMET Director, Prof. Tim Wright, have written a commentary on satellite InSAR for the 10 year anniversary of
Nature Communications out in print! Read the article here.

Fig. 1: Measuring surface movement with InSAR.
An orbiting satellite sends a coherent radar signal to the surface and measures the backscattered radiation. The phase difference (position in the wave cycle) between the signals returning at two different times (time 1 in black and time 2 in red) can be used to estimate ground movement caused by a range of mechanisms. https://www.nature.com/articles/s41467-020-17587-6/figures/1