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January 17, 2006
This ASAR IMM image is centered over Reunion, a French island in the western Indian Ocean about 645 km east of Madagascar. This volcanic island has a particularly rugged landscape. The active volcano Piton de la Fournaise (2631 m) can be observed in the southeast part of the island. It is one of the world's most active volcanoes, with more than 100 eruptions in the last 300 years. Three calderas created by huge collapses can be seen in the center of the island. Piton des Neiges (3069 m), the island's highest peak can also be seen. Due to the island's relief, all human activities are concentrated on the coast (bright areas in the image). Some ships can be observed in the northwest part of the island close to capital city and principal port, Saint-Denis. An interesting feature of this image is the effect of the wind on the sea surface. On the day this image was acquired, the wind was blowing from east to west and the high relief of the island protected the western side from the wind, resulting on calm sea surface area that appears in dark grey tones towards the center-left part of the image.

Technical Information:
  • Satellite: Envisat
  • Instrument: ASAR
  • Acquisition: 08-Feb-2003
  • Orbit nr: 04926
  • Center coordinates: lat. -21.28, lon. 55.80

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