Reykjanes volcano news & activity updates
Mt. Thorbjorn volcano (Reykjanes peninsula, Iceland): earthquakes decrease, but inflation continues
Saturday Feb 08, 2020 11:29 AM | BY: T
Depth vs time of earthquakes beneath Thornbjorn volcano during the past daysEarthquake activity around Thornbjorn volcano has decreased over the past days, but weak inflation, likely caused by magma accumulation at shallow depth, continues.
Icelandic scientists measured that in some places about 5 cm ground uplift have taken place since the start of the seismic crisis and that the intrusion is likely located at 3-5 km depth in an area just west Thornbjorn. The Icelandic Met Office reported yesterday:
"...Small earthquakes are still being detected in the area. Since the 21st of January over 1500 earthquakes have been located in the area. Most of them are located in a SW/NE line around 2 km NE of Grindavik.
Indications are that the crustal deformation pattern has changed, however uplift is still ongoing. In total the uplift is about 5 cm since the 21st of January. With ongoing uplift we can expect ongoing earthquake activity."
Links / Sources:
Links / Sources:
- The Scientific Advisory Board meets to discuss the unrest at Mt. Thorbjörn in the Reykjanes peninsula (Icelandic Met Office)
Sunday, Feb 02, 2020
The seismic crisis on the Reykjanes peninsula continues. It shows no signs of weakening, but has intensified during the past days. ... [more]
Reykjanes volcano (Reykjanes peninsula (SW Iceland)) activity update: Alert level raised to Yellow- earthquake swarm, inflation
Monday, Jan 27, 2020
IMO reports: An inflation has been detected since January 21st and is centred just west of Mt. Thorbjorn on Reykjanes peninsula. The inflation is unusually rapid, around 3-4 mm per day and has accumulated to 2 cm to date. It has been detected both on continuous GPS stations and in InSAR images. The inflation is most likely a sign of magma accumulation at a depth of just a few km. If magma accumulation is causing the inflation, the accumulation is very small, with the first volume estimate is around 1 million cubic meters. ... [more]
Sunday, Oct 13, 2013
A shallow (10 km) magnitude 4.8 earthquake with many pre- and aftershocks (or a seismic swarm) occurred this morning (Sun) at 07:34 UTC at the SW tip of the Reykjanes peninsula, on the SW active rift zone. The swarm of earthquakes included several quakes of magnitude 3 and higher. The strongest earthquake was widely felt in SE Iceland. ... [more]
Friday, Aug 31, 2012
Yesterday, there was a lot of earthquake activity on Iceland. At noon, a swarm with about 50 quakes partly preceded and followed a magnitude 4.2 quake at 5.8 km depth beneath the Reykjanes peninsula, near the axis of the the SW volcanic rift zone. Most quakes were between magnitudes 1-2 and at around 5 km depth. ... [more]
Wednesday, Feb 08, 2012
A seismic swarm has occurred on the Reykjanes Ridge 70 km offshore the SW tip of Iceland. About 40 earthquakes with magnitudes mostly between 2 and 3 were recorded. The Reykjanes Ridge is part of the active SW rift zone running through the western part of Iceland. ... [more]