Volcanos

Roundup of Global Volcanic Activity

Askja (Central Iceland): A shallow earthquake swarm has been occurring 25 km NE of the Aksja caldera since Thursday. More than 150 small quakes with magnitudes up to 2.2 have so far been recorded, clustered at depths between 3-12 km in 5 km north of the Herðubreið table mountain, an old subglacial volcano 20 km NE of the Askja caldera. Whether the swarm is caused by a magmatic intrusion or something else is not known at the moment.

Sabancaya (Peru): Weak dilute ash emissions could be observed yesterday from the volcano. An inspection of the crater by staff from the Observatorio Vulcanológico del Sur (OVS) on 1 October showed that temperatures at the fumaroles remain elevated (near 400 deg C) and volcanic gas emissions had slightly increased over the past weeks. According to the latest report by INGEMMET, seismic activity, in particular rock-fracturing earthquakes increased significantly at the volcano during the first days of October. However, according to the latest report by OVS, no such increase is mentioned. Overall seismic activity has been low during the past weeks.