News18 March 2011 COSMO-SkyMed images of Japanese disaster areas. |
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COSMO-SkyMed images and Maps of the areas of Japan hit by the earthquake and tsunami on 11 March are now available from e-GEOS. In the wake of the disaster, e-GEOS acted immediately to document the situation in the areas affected using satellite images and maps. All data processed and distributed by e‑GEOS. All COSMO-SkyMed imagery ©ASI. Information and imagery on this site will continue to be updated in the coming days. Fukushima Nuclear Power plant suffered major damage from the earthquake, which disabled the reactor cooling systems and triggered a widespread evacuation surrounding the plant. This is a MultiTemporal Coherence (MTC) map product generated from two COSMO-SkyMed Spotlight images acquired on March 16th and March 17th (8.22 UTC) supporting this change detection analysis. The MTC product is a false-colour composite imaged realized through linear combination of the SAR detected amplitudes and the interferometric coherence of two SAR images acquired with the same geometric characteristics (interferometric mode), i.e. same orbit pass, look direction, incidence angle, polarization, acquisition mode. The product provides information about areas where changes happened in the interval between the two acquisitions. |
Click on images below for larger versions
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Left: Damage assessment map. The earthquake and tsunami of March 11 caused significant damage to the Fukushima 1 Nuclear Power plant. Through analysis of the 1-m COSMO-SkyMed Spotlight image it is possible to extract information about the status of the reactor buildings. From the shadows of the buildings it is evident that the shape of reactor buidlings 1, 3, and 4 has been altered by the explosions, while the building housing Reactor 2 is intact. Right: Flood map. Soon after the earthquake, a 10-metre high tsunami struck the coast of northern Japan. Analysis of the 1-m COSMO-SkyMed Spotlight image of March 16, highlights flooded areas around the Fukushima plant, mostly in the North. |
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