En plus de l'activité du lac de lave et les modifications de la caldeira suite aux effondrements signalés le 20 janvier , une éruption fissurale a débuté ce 21 sur le flanc sud-est de l'Erta Ale, à 7 km environ de la caldeira.
Selon les contacts de Volcanodiscovery sur place, l'origine est une série de fissures localisées entre l'Erta Ale et le mont Amaitole (?) ; elle émet de volumineuses coulées en direction d'Afdera.
Le massif de l'erta Ale et Afdera
In addition to the activity of the lava lake and the modifications of the caldera following the collapse reported on January 20, a fissure eruption began on this 21 on the southeast flank of the Erta Ale, about 7 km from the caldera .
According to Volcanodiscovery contacts on site, the origin is a series of cracks located between Erta Ale and Mount Amaitole (?); It emits voluminous flows in the direction of Afdera.
Erta Ale - le monitoring "point chaud" du MODVOLC respectivement le 23, 24 et 25.01.2017 - http://modis.higp.hawaii.edu
Erta Ale - anomalie thermique très élevée - doc. Mirova MODIS au 26.01.2017 / 10h10
Erta Ale - les eruptions fissurales vues par Landsat 8 OLI / This image was captured by the Operational Land Imager (OLI) sensor on Landsat 8 on January 26, 2017. It is a composite of natural color (OLI bands 4-3-2) and shortwave infrared (OLI band 7). Shortwave infrared light (SWIR) is invisible to the naked eye, but strong SWIR signals indicate increased temperatures. Infrared hot spots representing two distinct lava flows are visible. Plumes of volcanic gases and steam drift from the lava lakes. - NASA Earth Observatory image by Joshua Stevens, using Landsat data from the U.S. Geological Survey. Caption by Adam Voiland.
Sources : Volcanodiscovery, Modvolc & Mirova
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