Iceland-Dev of activation
A new eruption started.
From available live webcams (link here), a new eruptive fissure opened at about 13:26 local time today. Pulsating small lava fountains are seen from the fissure.It seems the fissure is about a few hundred meters long, judging from the webcam imagery.
The eruptive fissure is located within the lava flow field at the same eruption site as the latest eruption in 2021, but the exact location is unknown for now and was not reported yet, however the IMO is ready to send a helicopter to detect a location.
Update:
The eruption continues at modest intensity (although it is likely to gradually increase), as a typical fissure eruption with lava fountains forming a "curtain of fire" along an approx. 100 m long fissure that opened today at around 1.36 p.m. A sheet-like lava flow is slowly spreading on both sides of the fissure.
https://youtu.be/GCa4EMcWuoI
Update:
Scientists already published the exact location of the new eruption site.
The eruptive fissure is located approx. 3 km north of Langihryggur with an approx. length of 360 meters.
Fountaining continues along the full-length fissure, feeding a new lava flow field that sometimes overlaps (in the south part of the fissure) the lava flow field from the previous eruption.
The eruptive fissure is located approx. 3 km north of Langihryggur with an approx. length of 360 meters.
Fountaining continues along the full-length fissure, feeding a new lava flow field that sometimes overlaps (in the south part of the fissure) the lava flow field from the previous eruption.
Update:
Magnús Tumi Guðmundsson, a professor of geophysics, says that the new eruption is likely five-to-ten bigger than the previous eruption, but not the big one.
The new eruption poses no imminent threat to inhabitants and infrastructure as the site is far enough from the closest infrastructure. From the nearby morphology, it seems the lava flow will flow likely into Meradalir valley on the east-southeast or towards the north.
He warns about a gas accumulation as the fissure is in a depression and advises people to be careful.
A larger amount of gas emissions escape from the current site in comparison with the last eruption, says Elín Björk Jónasdóttir from the Icelandic Meteorological Office. A new network for near real-time gas measuring will be installed in the area in the next few days. She adds that the prevailing wind is supposed to change over the weekend.
Source: RÚV volcano activity update 3 August 2022
The new eruption poses no imminent threat to inhabitants and infrastructure as the site is far enough from the closest infrastructure. From the nearby morphology, it seems the lava flow will flow likely into Meradalir valley on the east-southeast or towards the north.
He warns about a gas accumulation as the fissure is in a depression and advises people to be careful.
A larger amount of gas emissions escape from the current site in comparison with the last eruption, says Elín Björk Jónasdóttir from the Icelandic Meteorological Office. A new network for near real-time gas measuring will be installed in the area in the next few days. She adds that the prevailing wind is supposed to change over the weekend.
Source: RÚV volcano activity update 3 August 2022
Update:
The effusive eruption has continued throughout the last night.
The continuous "curtain of fire" has been already building elongated steep-sided ridges due to piling up hot, juvenile and plastic lava fragments around the fissure, so-called spatter ramparts.
The RÚV launched another live streaming showing the better, full-size fissure view where a new spatter cone is being observed that has formed above the vent.
The first estimated lava flow rate is about 20-50 m3/second.
The continuous "curtain of fire" has been already building elongated steep-sided ridges due to piling up hot, juvenile and plastic lava fragments around the fissure, so-called spatter ramparts.
The RÚV launched another live streaming showing the better, full-size fissure view where a new spatter cone is being observed that has formed above the vent.
The first estimated lava flow rate is about 20-50 m3/second.
The helicopter is flying over the eruptive fissure (source: @salvor/twitter)
It is beautiful. Real time here: https://t.co/qYH5EVBoOZ #eruption #fagradalsfjall #reykjanes #iceland pic.twitter.com/Vgx3fdjs7P
— Salvor Kristjana (@salvor) August 3, 2022
Update 8/7:
A new lava flow map of the new eruption has been published.
The map contains 2021 lava flows as well.
The Icelandic Institute of Earth Sciences took lava samples on the first day of the new eruption in Meradölum.
Magnesium oxide (MgO) concentrations in rapidly cooled glass were measured approx. 7.5% with titanium dioxide (TiO2) and potassium oxide (K₂O) ratio of 0.25. The 2022 lava has a similar composition to the 2021 lava.
A current lava temperature of the new eruption is 1190-1200 °C.
Magma likely comes from the upper part of the earth's crust where has remained over the past months.
Source: Institute of Earth Sciences volcano activity update 6 August 2022
Update 8/8:
The effusive activity continues with little changes over the past 24 hours.
Several fissure vents have been reduced to three vents since the eruption began, but continue at a higher intensity in each vent.
Pulsating lava fountains shoot a glowing plastic material up to 100 meters height that continues to feed the lava into a 1 km long stream toward the east of the crater (watch a video below).
A volcano-tectonic earthquake with magnitude M 4.1 occurred at 11:52 local time today on the Reykjanes Peninsula, west of Lake Kleifarvatn (5.6 km north-northeast of Krýsuvík, at 5.2 km depth).
Several fissure vents have been reduced to three vents since the eruption began, but continue at a higher intensity in each vent.
Pulsating lava fountains shoot a glowing plastic material up to 100 meters height that continues to feed the lava into a 1 km long stream toward the east of the crater (watch a video below).
A volcano-tectonic earthquake with magnitude M 4.1 occurred at 11:52 local time today on the Reykjanes Peninsula, west of Lake Kleifarvatn (5.6 km north-northeast of Krýsuvík, at 5.2 km depth).
https://www.facebook.com/Vedurstofan
UPDATE 8 /10:
The ongoing eruption at Reykjanes Peninsula is indicated to take quite some time.
This is a statement of scientists believing that the progress of the eruption is as expected.
An available satellite image of the Reykjanes Peninsula confirms a deformation of the surface since late July located NE of Grindavík (black frame). The ground deformation is a result of the M 5.5 earthquake on 31 July.
The latest GPS and seismic measurements don't indicate a presence of magma moving beneath this area.
Source: Icelandic Meteorological Office volcano activity update 10 August 2022
This is a statement of scientists believing that the progress of the eruption is as expected.
An available satellite image of the Reykjanes Peninsula confirms a deformation of the surface since late July located NE of Grindavík (black frame). The ground deformation is a result of the M 5.5 earthquake on 31 July.
The latest GPS and seismic measurements don't indicate a presence of magma moving beneath this area.
Source: Icelandic Meteorological Office volcano activity update 10 August 2022
UPDATE 8 /12:
The lava effusion continues to fill up the Meradalir valley on the east and might soon start overflowing into the adjacent Suðurstrandavegi valley. It may takes about one week to happen, but a more likely scenario is estimated to take weeks or months, says Magnús Tumi Guðmundsson, a professor of volcanology at the University of Iceland.
Observations indicate that the lava at the easternmost point in the Meradalir has risen by 4-to-5 meters in comparison to the last Sunday.
The advancing lava flow breaks the 2021 lava flow field into big slabs pushing ahead of it, even up the hill. The lava flow is currently approx. 150 meters from the pass (the lowest point)to overflow.
Observations indicate that the lava at the easternmost point in the Meradalir has risen by 4-to-5 meters in comparison to the last Sunday.
The advancing lava flow breaks the 2021 lava flow field into big slabs pushing ahead of it, even up the hill. The lava flow is currently approx. 150 meters from the pass (the lowest point)to overflow.
Update 8/13:
The activity at the eruption site continues with little changes since yesterday, but has been stable for now.
The IMO institute reported that the main lava flow direction has transited from eastward to northward, but not into Suðurstrandavegi valley yet. According to the University of Iceland, it seems the flow continues to travel through narrow and steep chutes which makes the effusion rate higher and more abundant. A rising volume of slowly spreading field of lava on the east has been reduced due to direction change.
The IMO institute reported that the main lava flow direction has transited from eastward to northward, but not into Suðurstrandavegi valley yet. According to the University of Iceland, it seems the flow continues to travel through narrow and steep chutes which makes the effusion rate higher and more abundant. A rising volume of slowly spreading field of lava on the east has been reduced due to direction change.
Update 8/16:
A new map measuring a thickness of the lava at Meradalir valley has been published.
The current lava flow field area is about 1.2 km2 with a maximum thickness of 20 meters and volume ranging between 0.7-10.7 m3.
The map is created via Pléiades, an emergency tasking platform for monitoring of volcanic eruptions.
In short, the Pléiades was collecting data via the CIEST2 in emergency mode during the first 10 days of the eruption which came to conclusion that the eruption continues at a similar rate as the previous eruption in April 2021.
The current lava flow field area is about 1.2 km2 with a maximum thickness of 20 meters and volume ranging between 0.7-10.7 m3.
The map is created via Pléiades, an emergency tasking platform for monitoring of volcanic eruptions.
In short, the Pléiades was collecting data via the CIEST2 in emergency mode during the first 10 days of the eruption which came to conclusion that the eruption continues at a similar rate as the previous eruption in April 2021.
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