Some features of this site are not compatible with your browser. Install Opera Mini to
better experience this site.
Evidence of Fresh Lava at Puyehue-CordÃ³n Caulle
This page contains archived content and is no longer being updated. At the time of publication, it represented the best available science. However, more recent observations and studies may have rendered some content obsolete.
The eruption of Puyehue Cordón-Caulle Volcano persists after more than four months of activity. On October 9, 2011, a conspicuous plume of gases and fine ash rose above the volcano and blew southeast over Argentina. In the natural-color satellite image (top), the landscape is covered with gray ash and largely snow-free for the first time in several months. To the northwest and southwest of the active vent lies a lava flow, its textured appearance suggestive of thick lava. Immediately west of the vent, the flow appears fresh; its dark surface is not yet covered by lighter ash.
In a false-color image made from shortwave infrared, near infrared, and visible light (second image), the vent and lava flow are bright orange. This is a sign of intense heat, and likely indicates ongoing emissions of lava. These images were acquired by the Advanced Land Imager (ALI) aboard the Earth Observing-1 (EO-1) satellite.
NASA image by Jesse Allen and Robert Simmon, using ALI data from the EO-1 Team. Caption by Robert Simmon.
Satellite data suggests that fresh lava continues to be emitted at the Puyehue Corón-Caulle Volcanic Complex.