Tilkynning um breytingu á litakóða eldfjalls

Krýsuvík

Tími: 17. mar. 2021, 14:17

Litakóði:  Appelsínugulur 

Númer eldfjalls: 371030

Virkniyfirlit:
The volcanic unrest in the Fagradalsfjall area is still ongoing. A total of 16500 earthquakes have been automatically detected by the seismic network in the past week in this area. In few occasions, short lived tremor pulses have been detected. The deformation, mapped via GPS data and InSAR images, revealed that in the past two weeks the magmatic dike, intruding between Fagradalsfjall and Keilir mountains, kept progressing toward the SW of Fagradalsfjall. Its depth is assessed to be around 1 km below the surface and it is assessed to be 3 to 5 km long. Over the last couple of days, the seismicity has been migrating to the NE of the dike path, suggesting an hault in a further migration towards the SW of Fagradalsfjall. Presence of surficial fracturing in the area suggest the tension in the crust keeps increasing. The last interpretation of the deformation data indicates that the magmatic intrusion is still receiving new magma from depth. At the same time the seismicity is showing a temporarily and apparent reduction in frequency and magnitude. This might indicate the beginning of a new phase in the current volcanic unrest in Krýsuvík/Fagradalsfjall volcanic system. The likelihood of an eruption is still considered elevated and the most likely location is, for the time being, assessed to be NE of Fagradalsfjall (coordinate for reference 63.914, -22.234). The aviation color code is maintained ORANGE. IMO keeps monitoring closely the area and surveillance has been (and will be) potentiate in order to improve the capability of detecting signs of imminent eruption and follow any possible evolution.

Hæð gosmökkvar:
No eruption ongoing.

Aðrar upplýsingar um gosmökk:
No eruption ongoing.

Nánar um vá:
Volcanic eruptions in Krýsuvík are primarily effusive events with minor emission of tephra. Volcanic plumes height might reach up to 1-5 km ASL. More information on the volcanic system, historical eruptive activity and volcanic hazards is available at: https://icelandicvolcanoes.is/?volcano=KRI All the VONA are currently available at the following link: https://www.vedur.is/eldfjoll/tilkynningar/vona/




Aðrir tengdir vefir



Þetta vefsvæði byggir á Eplica