Within the ARISE2 Project, University of Azores and University of Firenze are carrying out a collaborative research focused on the long-range detection and analysis of infrasound from volcanic eruptions. We present here infrasound data from the 2011 eruption of Grímsvötn volcano, at a distance of ~2900 km, and from the 2016 eruption of Etna volcano, located at a distance of ~3700 km. 

 

Grímsvötn volcano, located under the Vatnajökull glacier on the center of the active NE rift zone of Iceland, is the most active Icelandic volcano. On May 2011 the eruption broke the ice cover and became subaerial explosive, ejecting volcanic ash into the atmosphere causing severe impact on the aviation traffic in Northwestern Europe and the North Atlantic. We present the long-range detections of the May 2011 eruptive activity recorded at IS42.

 

Mt. Etna, the largest and most active volcano of Europe, is located in NE region of Sicily Island, Southern Italy. Its recent volcanic activity is typically effusive with explosive episodes and lava fountaining able to produce high (up to 15 km) eruptive plume, affecting local air traffic and nearby airports and cities. The work allowed to associate the detections of IS42, to several explosive phases and lava fountaining episodes during the eruptive activity. 

We present the comparison of infrasound recorded at IS42 with data recorded near the source (˞5km) by the ETN local UniFI infrasonic array.