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Gigur_08052024

Eruption ongoing and lava flowing mostly to the northeast - 18.6.2024

Updated 18. June at 15:40 UTC

The eruption has been rather stable the past few days and one crater remains active. Lava is flowing mostly to the north from the crater, but a part of the lava accumulates to the south of the crater. The lava that flows to the north enters the lava lake near Mt. Sýlingarfell and continues to the north where the lava field continues to thicken. A small opening in the western crater rim appeared yesterday at noon and from there a stream of lava flowed a short distance to the west towards Mt. Sundhnúkur, but that stream has since been inactive. Little to no seismicity has been detected in the area.

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One month since the start of the eruption at the Sundhnúkur crater row - 16.4.2024

Today marks one month since the beginning of the eruption that is ongoing at the Sundhnúkur crater row. The eruption, which began on the evening of March 16, is the fourth in a series of eruptions that started when magma began accumulating beneath Svartsengi in late October 2023.

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Seismic swarm in the northwest past of the caldera in Askja yesterday - 26.3.2024

Yesterday (25 March) a seismic swarm occurred in the NW part of the Askja caldera. About 30 earthquakes were detected between 08.00UTC and midday. The largest earthquake detected had a magnitude M3,5 at a depth of about 5 km. Three earthquakes with magnitudes between M2 and M2,5 were also detected, the rest of the activity was characterized by smaller events. Overall, the seismic activity in the Askja has been quite stable between months and unchanged until yesterday. Looking back, we can see that earthquakes with magnitude above M3 were detected in January 2022 and October 2021.

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The weather in Iceland in 2023 - 26.2.2024

The weather in 2023 was mostly favorable. It was calm, dry, relatively little snow and stormy days were quite uncommon. However, the year was cooler compared to the most recent years. The average nationwide temperature was 0.1°C colder than the average temperature between 1991 and 2020, and 0.4°C colder than the average temperature of the last ten years. It was relatively coldest in the North, while the Southwest and Southern coast were relatively warmer. The weather was particularly cold in the beginning of the year and again in March. June, on the other hand was exceptionally warm in the North and East. It was the warmest June on record in many places in those regions. The year was relatively dry, with precipitation below average across most of the country. There were several dry periods during the year, such as in March and July, but there were also periods of heavy rain in between. May and June were particularly wet and gloomy in the southern and western regions.

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New understanding of ultra-rapid formation of magma filled cracks in the Earth - 8.2.2024

On 10 November 2023 the town of Grindavík in Iceland was evacuated as massive amounts of magma suddenly flowed into a magma filled crack that propagated underneath the town. Magma was emplaced in a 'vertical sheet' type intrusion in the Earth's crust. An international team of scientists explains the formation of the intrusion, and conditions for ultra-rapid flow into cracks, in a new publication in the prestigious scientific journal Science.

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Conclusion of Grímsvötn Glacial Outburst Flood - 23.1.2024

Updated 23 January at 9:00 UTC

Since the glacial flood reached its peak in the river Gígjukvísl approximately a week ago, the water level has been decreasing and is now comparable to what it was before the flood. The seismic tremor measured on the seismometer at Grímsfjall has also declined, with seismic noise now back to normal levels. Since last week Monday, 21 earthquakes have been recorded in Grímsvötn, including two earthquakes exceeding magnitude two.

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