Very little is known about the volcano Zvezdnoye Ozero (Star Lake, 67D26’05’’N 102D24’26’’E) in the Kraznojarsk Kraj in Russia. It is situated in the northern end of the Siberian Traps, but is otherwise unrelated to the famous Igneous Province.
It is believed to have erupted the last time about 600 000 years ago in a caldera forming eruption when it produced the Chirinda Ignimbrites. The volcano was until recently considered to be completely extinct.
In late September a persistant and long (27 days) swarm of earthquakes consisting of more than 4 000 separate earthquakes took place ranging up to 3.1 on the local magnitude scale. Scientists from KVERT under leadership of Dr Igor Kurchatov moved to this very remote area to emplace essential equipment on orders from the GKO (Gosudarstvennyj komitet oborony).
From the third of October until mid February they measured a Bradyseism causing an uplift of 190cm. Then a second swarm started on the 17th of February that has been ongoing until yesterday. During the last few days heightened levels of seismic tremor combined with elevated reading of SO2 in the Zvezdnoye Ozero. The lake had on the 30th of March turned highly acidic and the water had dropped nine meters.
The heightened activity caused President Putin to order the evacuation of the 53 nomads living in the area. See video.
Initial reports say onset of eruption was highly explosive, after the initial report to the Committee of Internal Security of the State, no further report has come from the scientists or the nomads evacuated to the nearby village.