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Askja Volcano

Updated: 28 mar. 2024 12:28 GMT -
Stratovolcano 1516 m (4,974 ft)
Central Iceland, 65.03°N / -16.75°W
Current status: normal or dormant (1 out of 5)
Last update: 27 mar 2024 (seismic swarm yesterday)

Askja is a large basaltic central volcano that forms the Dyngjufjöll massif. It is truncated by three overlapping calderas, the largest of which is 8 km wide and may have been produced primarily from subglacial ring-fracture eruptions rather than by subsidence.

[smaller] [larger]
Typical eruption style: explosive + effusive
Eruzioni del vulcano Askja: 1797(?), 1875, 1919, 1921, 1922, 1923, 1924(?), 1926, 1938, 1961

Latest nearby earthquakes

Data / oraMag. / Prof.Distanza / Ubicazione
25 mar 10:40 (Reykjavik)
25 mar 10:40 GMT
3.5

5.7 km
6.2 km a nord ovest 7.6 km SSE of Lokatindur
I FELT IT
Info
25 mar 08:09 (Reykjavik)
25 mar 08:09 GMT
2.5

3.9 km
6 km a nord ovest 7.6 km SSE of Lokatindur Info
25 mar 08:06 (Reykjavik)
25 mar 08:06 GMT
2.5

4.3 km
6.2 km a nord ovest 7.6 km SSE of Lokatindur Info
25 mar 08:08 (Reykjavik)
25 mar 08:08 GMT
2.1

4.1 km
5.9 km a nord ovest 7.8 km SSE of Lokatindur Info
domenica, 24 marzo 2024 GMT (1 sismo)
24 mar 15:40 (Reykjavik)
24 mar 15:40 GMT
2.1

3.2 km
2.8 km a nord est 4.4 km W of Dreki Info
lunedì, 25 marzo 2024 GMT (1 sismo)
25 mar 09:31 (Reykjavik)
25 mar 09:31 GMT
1.6

4 km
6.2 km a nord ovest 7.5 km SSE of Lokatindur Info

Background

A major rhyolitic explosive eruption from Dyngjufjöll about 10,000 years ago was in part associated with the formation of Askja caldera. Many postglacial eruptions also occurred along the ring-fracture. A major explosive eruption on the SE caldera margin in 1875 was one of Iceland's largest during historical time. It resulted in the formation of a smaller 4.5-km-wide caldera, now filled by Öskjuvatn lake, that truncates the rim of the larger central caldera. The 100-km-long Askja fissure swarm, which includes the Sveinagja graben, is also related to the Askja volcanic system, as are several small shield volcanoes such as Kollatadyngja. Twentieth-century eruptions at Askja have produced lava flows from vents located mostly near Öskjuvatn lake.

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Source: GVP, Smithsonian Institution

Askja Volcano Photos

Latest satellite images

Askja satellite image sat1Askja satellite image sat2

Wed, 27 Mar 2024, 03:46

Askja volcano (Central Iceland): seismic swarm yesterday

The deformation plot depicts various movements of the ground at Tanni GNSS station located on the northern rim of the caldera (image: IMO)
A seismic swarm occurred at the volcano yesterday. ... Read all
Thu, 5 Oct 2023, 05:17

Askja volcano (Central Iceland): uplift slowed down

The plot shows the  cGNSS data from the station KASC located within Askja caldera. The time series shows the trend of the deformation since November 2022 in the North, East and Up components, and the green dot shows the latest measurement acquired (image: IMO)
The latest deformation data (cGNSS) revealed a subsidence of the edifice since early August. ... Read all

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