The European Space Agency (ESA) is Europe’s gateway to space. Its mission is to shape the development of Europe’s space capability and ensure that investment in space continues to deliver benefits to the citizens of Europe and the world.
Find out more about space activities in our 23 Member States, and understand how ESA works together with their national agencies, institutions and organisations.
Exploring our Solar System and unlocking the secrets of the Universe
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Go to topicMaking space accessible and developing the technologies for the future
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Sentinel-1A radar scans from 23 September and 30 August 2014 were combined to create this ‘interferometric’ image showing surface deformation of a landslide in the municipality of Kåfjord in Troms county, Norway. In the 24 days between the two acquisitions, the ground moved about 1 cm.
Synthetic aperture radar interferometry – or InSAR – is an important technique used by the Norwegian authorities to map rockslide hazards nationwide. The unprecedented coverage offered by the Sentinel-1 mission will significantly increase the value of InSAR data for this purpose. The satellite passes over the same spot on the ground every 12 days.