FROM: NASA
Lava Flow on Mawson Peak, Heard Island
In October 2012, satellites measured subtle signals that suggested volcanic activity on remote Heard Island. These images, captured several months later, show proof of an eruption on Mawson Peak. By April 7, 2013, Mawson's steep-walled summit crater had filled, and a trickle of lava had spilled down the volcano’s southwestern flank. On April 20, the lava flow remained visible and had even widened slightly just below the summit.
These natural-color images were collected by the Advanced Land Imager (ALI) on the Earth Observing-1 (EO-1) satellite. Image Credit: NASA Earth Observatory
FROM: NASA
Erupting Fissure at Tolbachik
After more than a month of eruption, lava continues to flow from Tolbachik, one of many active volcanoes on Russia’s Kamchatka Peninsula. The current eruption at Tolbachik began on Nov. 27, 2012. Lava flowed up to 20 kilometers (12 miles) from a line of fissures on the volcano’s southern flank. Since then, some of the lava has cooled enough to allow snow to accumulate. Snow-covered lava flows appear gray in this natural-color satellite image. Fresher lava appears black. A faint orange glow at the head of the northern flow marks the location of an erupting fissure.
The image was collected on Dec. 22, 2012, by the Advanced Land Imager (ALI) on the Earth Observing-1 (EO-1) Satellite. According to the Kamchatka Volcanic Eruption Response Team (KVERT) the eruption continued through Dec. 30, 2012. Image Credit: NASA Earth Observatory
