Peru’s Sabancaya volcano has been restless for the past few years. Recently, the occasional puffs of ash and volcanic gases have become more frequent and intense. Since November 6, 2016, the 5967-meter (19,577-foot) mountain has produced ash eruptions and dozens of explosions.
On November 16, 2016, (left) a cloud of ash billowed over Sabancaya; by November 19 (right), ash had darkened the ground. In the November 16 image, the bright area to the southwest of Sabancaya is snow near the peak of Mount Ampato, a dormant volcano. The November 16 image was acquired by a multispectal imager on the European Space Agency’s Sentinel 2 spacecraft. The Operational Land Imager (OLI) on Landsat 8 captured the November 19 image.
Sabancaya is not the only volcano in the Andes that has been active recently. Thousands of kilometers to the south, unrest at Copahue—a stratovolcano along the border of Chile and Argentina—has sent ash streaming from the mountain on several occasions this month.
In contrast to the explosive eruptions of the previous week, ash emissions from Mount Redoubt became more frequent but confined to lower altitudes on March 30, 2009. The commercial satellite GeoEye-1 captured a high-resolution view of the volcano the same day.