NASA Earth Observatory – new Chaitén images 11 March 2009Posted by admin in activity reports, Chaitén, Chile, eruptions, NASA Earth Observatory, natural hazards.
Tags: Chaitén, Chile, NASA Earth Observatory, natural hazards, South America
More new images of Chaitén from the NASA Earth Observatory, this time from the Advanced Land Imager on the EO-1 satellite. On 6 March 2009 the satellite captured the volcano producing an impressive eruption plume consisting mainly of water vapour that dispersed to the south-east. Chaitén’s plume is currently characteristically the whitish-grey that denotes a predominance of water vapour, only acquiring the brownish colouring of ash after a dome collapse and associated explosions and ash flows. It is notable from these images how much sediment has been carried by the rivers to the north and south of the volcano, which now show widened channels bordered by the grey of ash deposits.
The image is published in two forms; reduced size versions of both are reproduced above. The upper image is true-colour, while the lower is an infrared/visible light image. The latter shows the red thermal signature of the active volcano, contrasting with the cool blue of Minchinmávida’s covering of ice and snow. The Earth Observatory page has links to very large versions of both images, showing extraordinary detail.
NASA Earth Observatory: Chaiten volcano, Chile (10 March 2009)
[NASA image created by Jesse Allen, using EO-1 ALI data provided courtesy of the NASA EO-1 Team.]