News

The Scientific Advisory Board meets to discuss the unrest at Mt. Thorbjörn in the Reykjanes peninsula - 7.2.2020

The data collected over the past week (including those measured by the recently installed stations) were reviewed. The new results suggest that the magma body is located at a depth of 3-5km, whereas it was previously estimated to be at 3-9km. There are indications of changing patterns in the crustal movements. The earthquake activity has decreased over the past two days, but there are still signs of a continuing inflation. Until now, the maximum deformation observed from the GPS stations is about 5 centimeters. Similar volcanic crises in the country suggest that this might be a long-term event, for which changes can occur week after week without the possibility to anticipate with certainty if the activity is resolved. During the meeting, possible scenarios that could be triggered in the event of an eruption have been also considered.

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Possible magma accumulation beneath Mt. Thorbjorn on Reykjanes peninsula - 26.1.2020

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 (0,001 km3).   This is the conclusion of a meeting held with the Scientific council of the Civil Protection at the IMO this morning.

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