Etna, an effusive vent opened in Valle del Bove: lava flow and ash from the Voragine

The National Institute of Geophysics and Volcanology, Etna Observatory, announces that this morning "the opening of an effusive vent in Valle del Bove was recorded, at an altitude between 2200 and 2350 m". A lava flow was produced from the vent. Field surveys are underway by INGV-Oe staff, while the emission of ash from the Voragine crater continues, with dispersion of the ash in a south-eastern direction.

"From a seismic point of view - says the INGV - after yesterday afternoon's increase, the average amplitude of the volcanic tremor reached a maximum value around 7.40pm last night and subsequently, up to the current state, with weak oscillations it has slightly decreased, always remaining within the range of high values. The centroids of the tremor sources are located in the area of the Voragine crater, at an altitude of approximately 3000 m above sea level.

Since yesterday afternoon, infrasonic activity has been quite variable in the low and medium levels."

The infrasonic events, of low to medium amplitude - states the INGV - have been localized and are still mainly produced by the Voragine crater; To a small extent, infrasonic sources have also been located in the North-East Crater.