Iceland Magazine Article: Earthquake swarm in Katla volcano not linked to volcanic activity, scientist says
An earthquake swarm occurred in Katla Volcano, southern Iceland on Sunday night.
Although an eruption is considered unlikely, Geophysicist Páll Einarsson expects seismic activity will continue around Katla well into the autumn.
A swarm of earthquakes began at 01.47 on 28 August 2016, inside the volcano’s caldera.
Five quakes measured more than 3 on the Richter scale, the largest measured 4.6 and could be felt in Langidalur in Þórsmörk valley.
Additionally, glacial water is reportedly flowing into Múlakvísl river, located south of Mýrdalsjökull glacier.
According to the Icelandic Met Office, there are high levels of sulphur dioxide (SO2) and hydrogen sulphide (H2S) in the area.
People are urged not to travel near the river due to gas pollution.
Water levels of Bláfjallakvísl glacial river also remain unusually high.
“Earthquakes of this magnitude are not linked to volcanic activity, but rather to plate tectonics,” Páll Einarsson reported to the National Broadcasting Service.
“Katla is a powerful volcano, however, there’s nothing that points to a possible eruption at this moment.
People ask: “When will Katla next erupt?” My answer to that is: “She erupted in 2011. We just didn’t notice.”
It normally erupts every 40–80 years.
Its last large eruption happened 98 years ago in 1918 (photo below), although there have been smaller eruptions that did not break Mýrdalsjökull‘s ice cover, including ones in 2011.
ICE2017 Team will keep a close eye on developments of this recent activity, as it may influence our planning for next years adventure.