Magma accumulation detected: Land keeps rising -2cm up since Sep! New earthquakes today! 15-17.11.21

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GutnTog
Published at : 20 Nov 2021

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BREAKING NEWS: Landrise probably due to magma accumulation - 17.11.2021

15:12 No lava flow has been seen from the crater in Fagradalsfjall from 18 September to the present day, or for two months. Gas is still measured but in very small quantities. An announcement from the Icelandic Meteorological Office states that with the eruption, the land around the volcanoes is probably viscous due to magma flowing from the magma tank.

At the end of August, it was seen on GPS meters that the subsidence was beginning to subside and from the middle of September it was beginning to turn into a landrise. The rise is very small, or about 2 centimeters where it is greatest. The latest satellite data show that the landrise reaches north of Keilir and south of the eruption sites. The source is believed to be at great depths and magma accumulation is considered the most likely explanation.

"It is not unlikely that the strong earthquake that began at the end of September at the southern end of Keilir and lasted for about a month, is related to the landrise, although no deformation has been seen in connection with the landrise, which was a sign that magma has moved closer to the surface." says in the announcement.

It is stated that it is not uncommon for magma to accumulate under volcanic systems after an eruption. The landrise does not have to be an indication that magma will search the surface in the near future. This is a possible scenario that will take years or decades and that it is difficult to predict the development.

NEW EARTHQUAKES HIT FAGRADALSFJALL TODAY ON NOVEMBER 17:

Domestic

mbl

17.11.2021

21:55

A new earthquake near Grindavík

A magnitude 3.0 earthquake measured three and a half kilometers northeast of Grindavík from 8 pm tonight. Three reports of the quake were received by the Meteorological Office tonight, but no one outside the town has called.

"There has not been much seismic activity in this area since before the eruption. After that, the seismic activity died out during that time. But now the eruption has been dormant for about two months and there has been some movement again, "says Bjarki Kaldalón Friis, a nature conservation specialist at the Icelandic Meteorological Office, in a conversation with mbl.is.

Says Grindvík do not have to worry

Bjarki says, of course, that it is uncomfortable that this earthquake is so close to the town, but says that the Grindvík people do not have to worry too much:

"Of course there are rafts there and it is not at all uncommon for there to be seismic activity in this area."

An earthquake of magnitude 2.5

He says several aftershocks have followed the quake, the largest of which measured 2.5 magnitude. Thus, the quakes can be classified as an earthquake that began at 8 pm tonight.
"There is no evidence that this is related to eruptions, these are just normal movements there. At least there is no unrest or anything, "says Bjarki.

#Fagradalsfjall #Geldingadalur #IcelandVolcano

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