Erta Ale volcano (Danakil depression, Ethiopia): lava returned to northern pit crater

The strong thermal radiation in the northern pit crater indicates lava supply to the lake (image: Sentinel-2)

The strong thermal radiation in the northern pit crater indicates lava supply to the lake (image: Sentinel-2)

The activity at the volcano’s northern pit crater has been increasing slightly over the past month.

It’s been almost a week today since the situation has been picking up in the crater as an intensifying strong thermal anomaly was identified in the latest satellite false-colour images processed by Sentinel-2 on 31 August and 5 September (see the attached timelapse video below). It is presumably to expect a usual vigorous lava spattering from the hornito as new (highly likely) surge of magma arrived in the lava lake. These are just predictive scenarios based on previous field reports as we haven’t received proper on-site information from our expedition leader, geologist and local guide, Enku Mulugeta from VolcanoDiscovery Ethiopia yet.

On the contrary, the southern pit crater appears to be stable, characterized by the ongoing equilibrium between heat, magma and gas-steam emissions supply and loss.

The timelapse video of Erta Ale’s activity over the past month, suggesting rise of the activity within the northern lava lake (image: Sentinel-2)