Another Icelandic volcano eruption on the cards
Discussion
From the same site as mentioned earlier a different view, over 18Mb so takes a few seconds to load
http://baering.github.io/earthquakes/visualization...
http://baering.github.io/earthquakes/visualization...
Puggit said:
Very quiet last night - no biggish 'quakes at all.
www.arstechnica.com/science/2014/09/move-over-icel...
d! I'm in Portsmouth all week and if I get pissing stuck here for next week I'm going to be right w
Latest update said:
-Earthquake activity continues – around 160 earthquakes have been recorded since midnight today. Seismicity is occurring mostly beneath the northern edge of Dyngjujökull. A magnitude 5.5 earthquake occurred at 03:08 UTC today on the northern side of the Bárðarbunga caldera.
-GPS measurements show that the volume of the dyke intrusion has increased since the beginning of the eruption; this signifies that more magma is entering the dyke than is being erupted.
-Despite no sign of a volume decrease in the dyke, GPS measurements show that the rate of ground deformation has slowed.
-Recent radar images show a 0.5 – 1 km wide depression that has formed both in front of and beneath Dyngjujökull. Signs of the depression extend about 2 km into the ice margin. The increasing thickness of the glacier decreases the visual extent of fracturing associated with the depression, so it is likely that the area extends further beneath Dyngjujökull.
-In light of GPS, radar and seismic results, it is possible that the ongoing eruption could progress southward under Dyngjujökull. This would lead to immediate flooding hazards on the floodplain in front of Dyngjujökull. Consequently, risk assessments for scientists working in the area will be reviewed.
-GPS measurements show that the volume of the dyke intrusion has increased since the beginning of the eruption; this signifies that more magma is entering the dyke than is being erupted.
-Despite no sign of a volume decrease in the dyke, GPS measurements show that the rate of ground deformation has slowed.
-Recent radar images show a 0.5 – 1 km wide depression that has formed both in front of and beneath Dyngjujökull. Signs of the depression extend about 2 km into the ice margin. The increasing thickness of the glacier decreases the visual extent of fracturing associated with the depression, so it is likely that the area extends further beneath Dyngjujökull.
-In light of GPS, radar and seismic results, it is possible that the ongoing eruption could progress southward under Dyngjujökull. This would lead to immediate flooding hazards on the floodplain in front of Dyngjujökull. Consequently, risk assessments for scientists working in the area will be reviewed.
Volcanic tremor detected!
Latest news said:
Geologists working near the Holuhraun eruption north of Vatnajokull have been advised to leave, as increased volcanic tremor has been detected in the vicinity. GPS measurements show that the magma intrusion has increased since the beginning of the current eruption and a rift valley has formed.
The civil protection has sent out SMS messages to people which are allowed in to the prohibited area.
Ármann Höskuldsson volcanologist says, because of the uncertainty where anything can happend, it is better not to be in the area.
During the night, there was a magnitude 5.5 earthquake inside Bárðarbunga. Kristín Jónsdóttir seismic scientists says that crackes one kilometre wide and one kilometre deep were formed.
UPDATED:
Seismometers at the Icelandic Met Office have in recent minutes shown increased low-frequency tremor at stations near the northwest part of Vatnajokull. The Civil Protection Agency has now called everyone back who was near the fissure in Holuhraun, due to concern that the eruption could be getting bigger, or that magma could break the surface at another location. No changes in the eruption have as of yet been confirmed.
According to the conclusions of the latest Scientific Advisory Board of the Civil Protection Agency, posted at noon today, the volume of the dike intrusion from Bardarbunga volcano towards the north has increased since the beginning of the current eruption in the Holuhraun lava field. This is taken to signify that more magma is entering the dike than is being erupted.
This has resulted in a formation of a 0,5 - 1 kilometer wide depression, or rift valley, both north of Dyngjujokull outlet glacier, as well as beneath the glacier itself. Signs of the depression extend about 2 km. into the margin of the glacier. "The increasing thickness of the glacier decreases the visual extent of fracturing associated with the depression, so it is likely that the area extends further beneath Dyngjujökull," says the Advisory Board.
The ongoing eruption in Holuhraun could progress southward under Dyngjujokull, which would lead to a subglacial volcanic activity. The Advisory Board considers this a distinct possibility in light of the GPS, radar and seismic observations. An eruption of that kind would lead to immediate flooding hazard on the floodplains north of Dyngjujokull: a large flood (jokulhlaup) would run down the Jokulsa a Fjollum glacial river towards the north east.
http://www.bardarbungavolcano.com/Home/News/53The civil protection has sent out SMS messages to people which are allowed in to the prohibited area.
Ármann Höskuldsson volcanologist says, because of the uncertainty where anything can happend, it is better not to be in the area.
During the night, there was a magnitude 5.5 earthquake inside Bárðarbunga. Kristín Jónsdóttir seismic scientists says that crackes one kilometre wide and one kilometre deep were formed.
UPDATED:
Seismometers at the Icelandic Met Office have in recent minutes shown increased low-frequency tremor at stations near the northwest part of Vatnajokull. The Civil Protection Agency has now called everyone back who was near the fissure in Holuhraun, due to concern that the eruption could be getting bigger, or that magma could break the surface at another location. No changes in the eruption have as of yet been confirmed.
According to the conclusions of the latest Scientific Advisory Board of the Civil Protection Agency, posted at noon today, the volume of the dike intrusion from Bardarbunga volcano towards the north has increased since the beginning of the current eruption in the Holuhraun lava field. This is taken to signify that more magma is entering the dike than is being erupted.
This has resulted in a formation of a 0,5 - 1 kilometer wide depression, or rift valley, both north of Dyngjujokull outlet glacier, as well as beneath the glacier itself. Signs of the depression extend about 2 km. into the margin of the glacier. "The increasing thickness of the glacier decreases the visual extent of fracturing associated with the depression, so it is likely that the area extends further beneath Dyngjujökull," says the Advisory Board.
The ongoing eruption in Holuhraun could progress southward under Dyngjujokull, which would lead to a subglacial volcanic activity. The Advisory Board considers this a distinct possibility in light of the GPS, radar and seismic observations. An eruption of that kind would lead to immediate flooding hazard on the floodplains north of Dyngjujokull: a large flood (jokulhlaup) would run down the Jokulsa a Fjollum glacial river towards the north east.
Gassing Station | News, Politics & Economics | Top of Page | What's New | My Stuff