Part two of the series 'ERS-Watching The World.'
ESA's European Remote Sensing satellites ERS-1 and ERS-2 were launched in 1991 and 1995 respectively. In addition to providing scientific data, these satellites now support operational and commercial applications of Earth observation worldwide. This five-part series gives an overview of the structure, use and capabilities of the ERS satellites.
'Watching The Ground Shake' examines the use of ERS's SAR [synthetic aperture radar] instrument to produce interferograms, and the subsequent production of DEMs [digital elevation models]. These have important applications in ascertaining seismic changes and topographic mapping.
A comprehensive script accompanies this video.

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10.00.00.00 ESA Copyright
10.00.08.00 ESA Logo
10.00.40.00 Title ""Watching the World""
10.00.50.00 Title ""Watching the Ground Shake""
10.00.56.00 Title ""A Roll""
10.01.02.00 Mount Etna at night
10.01.11.00 House buried in lava
10.01.19.00 Lava
10.01.30.00 Gvs, Catania, Italy
10.01.35.00 Lava
10.01.39.00 GVs, Catania, Italy
10.01.50.00 Smoking volcano
10.01.56.00 Smoking lava
10.02.00.00 Dr Didier Massonnet examines multiple radar images
10.02.21.00 I/v Dr Didier Massonnet
10.02.47.00 Laser Interferometry demonstration, Imperial College, London
10.03.22.00 Lava
10.03.27.00 Dr Didier Massonnet looking at interferograms
10.03.43.00 Volcanologists taking measurements on Etna
10.04.06.00 I/v Dr John Murray
10.04.33.00 Digital Elevation Model of Mount Etna
10.04.41.00 Digital Elevation Model of Mount Etna
10.04.47.00 Digital Elevation Model of Trolladyngja Mountain
10.04.55.0 Mount Etna at night
10.05.20.0 Title ""B Roll""
10.05.26.00 Graphics ERS-2 Orbiting the world
10.05.43.00