Earth shifts in colour

Greenland ice streams - This image combines two Sentinel-1A radar scans from 3 and 15 January 2015 to show ice velocities on outlet glaciers of Greenland's west coast. Sentinel-1 offers excellent capabilities for observing the velocities of Greenland's outlet glaciers with unprecedented temporal resolution at complete spatial coverage, extending and enhancing the time series of ice-velocity maps available from previous satellite sensors. Sentinel-1A interferogram, San Joaquin Valley - This 'interferogram' combines 19 scans by Sentinel-1A's radar over the San Joaquin Valley in the US state of California. Covering an area of about 30 000 sq km, a number of oil fields are visible (outlined in black). Surface patterns of motion, such as subsidence (red) and uplift (blue), associated with 'enhanced oil recovery' operations are observable in the image. The remote sensing technique known as Interferometric Synthetic Aperture Radar, or InSAR, can be used for a variety of operational applications, including the monitoring of well integrity, reservoir optimisation, identification of undrained compartments and the management of injection activities. This image was processed by Tele-Rilevamento Europa, which provides measurements of surface deformation with millimetre accuracy using multitemporal satellite radar images.