Comme d'habitude, pas fort. Une faille d'environ 9 m de profondeur a été découverte ce matin en plein milieu du stade sportif couvert de la ville, sous la pelouse synthétique. Heureusement que ce complexe sportif est resté interdit d'accès depuis le 14 janvier dernier...
I always find it interesting looking at maps made by others using data that I´m familiar with. After the November 10-11 dike intrusion, the Icelandic Civil Defense activated the Emergency Response Coordination Centre which is part of the European Civil Protection & Humanitarian Aid Operations. They have now published a few maps using data that we have supplied. Some of these are absolutely packed with information. Too much perhaps?
We issued a new hazard map today for the #Svartsengi - #Grindavik area. We are inching towards another intrusion it seems. Results from modelling indicate we might reach a similar inflating volume we had before the last eruption on the 14 January in a few days. We expect a seismic swarm as a precursor, but the time between swarm onset and eruption is uncertain. For the previous two eruptions we got 90 minutes and 5 hours.
Finalement, aucun.e résident.e n'a pu entrer dans Grindavik ce jour (et encore moins pour ce week-end). Non seulement la météo est exécrable (blizzards) mais de nouvelles fissures sont apparues. Et pour couronner le tout, le système d'eau froide ne fonctionne plus...
There is nothing new about a #VolcanicEruption in the south-west of #Iceland, on Reykjanes (smoky peninsula). This map (from the Icelandic outlet #Heimildin) shows that there were centuries of repeated #eruptions from about the 8th to the 13th centuries CE.
You can see how the southern part of the capital-region intersects with eruptions from the 10th century. I live in #Reykjavík but it is beneath the box labelled Kópavogur.
I'll give some info on reading the map in a reply.
La dernière carte qui fait froid dans le dos : on savait que Grindavik s'est construite sur d'anciennes failles. Et voilà que l'éruption du 14 janvier a "réveillé" ces fissures vieilles de plusieurs siècles par une augmentation de leur largeur (1.4 m max). Parallèlement, il s'avère que les terrains recommencent à se soulever dans la zone de Svartsengi.
Bref, c'est confirmé : une 3ème éruption est en préparation dans ce secteur.
Elevation difference map (vertical displacement) based on two different acquisitions by our remote sensing team. These area base on two DEMs spanning 1 Dec. to 15 Jan. covering the latest eruption in #Grindavík
Eruption terminée à 1h du matin. 41h - dont 6h puissantes - contre 3 jours pour celle du 18 décembre.
L'eau chaude et l'électricité sont de retour dans le quartier ouest de Grindavik.
Outre les 3 maisons, la zone orientale de la commune présente plusieurs dégats comme la déformation des conduits d'eau sous la chaleur de la lave. Une grande partie des habitant.e.s de Grindavik ont remis leurs clés aux autorités pour qu'elles puissent être inspectées (failles, fissures, coupures d'eau/d'électricité)
A daring operation is being launched to rescue more than 200 #sheep left to their fate by farmers after a #VolcanicEruption near the evacuated Icelandic town of #Grindavik.
With molten #lava setting homes ablaze and the ground surface cracking, #RescueTeams are seeking to bring out an estimated 270 animals from their fields and pens.
Think to have pinpointed the folded asphalt that formed in #Grindavik close south to the small fissure. That is another sign there is some #transtension (extension with a #transform component) going on. Same as the en-echelon steps in the #fissures#Iceland. Orientation of Maximum horizontal #compression in the order of 050-230.
Here another view of the same buckled road in #Grindavik and an illustration how that might happen if there is a small transform component (movement parallel to faults). The tarmac is of different material than the hard rock below or the sediment on top, so behaves differently. #eruption#Iceland.
And a picture showing 'en-echelon' (stairways, overlapping) cracks. Just as the large fissures: they are discontinuous, subparallel segments of a larger fault/shear zone underneath. #eruption#grindavik#Iceland#structural#geology.
A rescue mission is planned for animals in Grindavík tonight or tomorrow. Three hundred sheep, seven cats and rabbits are within the confined area and have not been fed or watered for two days.
The man who owns the sheep is frustrated that media and civil defense responders have been allowed in town and are taking photos and videos, but he may not be allowed in the area with his trailer to get his sheep.
@oligneisti Could you perhaps answer a couple of questions for me? I'm not finding the information in articles I've read- how does Iceland's government respond to the citizens of Grindavik? Will they get financial assistance to rebuild or move elsewhere if the town is deemed unsafe?
There have been temporary efforts, especially regarding mortgage payments.
The big long term questions are unanswered. People who lost their houses yesterday will get compensation, same goes for houses that were damaged by the quakes.
A woman I know from #Grindavík was actually hoping that the lava would take her house so she could move on with her life.
#Iceland was dealing with a housing shortage before the #VolcanicEruption so the situation is difficult.
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There are elements of the compensation laws that clearly favor those who return. When avalanches hit two villages in the Western-Fjords in Iceland back in the 90s, new houses were built within a safer area in the villages.
What I am hearing is that the uncertainty is the worst for many people. We don't know if #Grindavík will be habitable any time in the future. Geology shows that these #eruptions can go on for decades in the same area.