Askja volcano

Actualizado: 18 ago. 2022 10:37 GMT - Refresh
Stratovolcano 1516 m (4,974 ft)
Central Iceland, 65.03°N / -16.75°W
Current status: restless (2 out of 5)
Last update: 3 ago 2022 (Smithsonian / USGS Weekly Volcanic Activity Report)

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.

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Typical eruption style: explosivo efusiva
Erupciones del volcán Askja: 1797(?), 1875, 1919, 1921, 1922, 1923, 1924(?), 1926, 1938, 1961
Lastest nearby earthquakes:
Fecha / HoraRevista / Prof.Distancia/Ubicación
miércoles, 17 agosto 2022 GMT (1 sismo)
17 ago 2022 20:20 (GMT +0) (17 ago 2022 20:20 GMT)
1.7

2.1 km
22 km (14 mi)
Iceland: 10.4 Km WNW of Lokatindur
sábado, 13 agosto 2022 GMT (1 sismo)
13 ago 2022 15:41 (GMT +0) (13 ago 2022 15:41 GMT)
2.1

4.6 km
22 km (14 mi)
Iceland: 9.2 Km NW of Lokatindur
martes, 9 agosto 2022 GMT (1 sismo)
9 ago 2022 03:32 (GMT +0) (9 ago 2022 03:32 GMT)
1.7

0.8 km
22 km (14 mi)
Iceland: 9.0 Km NW of Lokatindur
jueves, 4 agosto 2022 GMT (1 sismo)
4 ago 2022 10:47 (GMT +0) (4 ago 2022 10:47 GMT)
1.8

8.2 km
23 km (14 mi)
Iceland: 10.3 Km NW of Lokatindur

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 Fotos

Viti crater and lake Öskjuvatn fill only a part of the enormous Askja caldera in Iceland. (Photo: Janka)
Viti crater and lake Öskjuvatn fill only a part of the enormous Askja caldera in Iceland. (Photo: Janka)
Askja caldera with its sulphurous Viti crater and the deep lake of Öskjuvatn in the background, Iceland (Photo: Janka)
Askja caldera with its sulphurous Viti crater and the deep lake of Öskjuvatn in the background, Iceland (Photo: Janka)
View on the exceptionally clear waters of lake Öskjuvatn, Askja caldera, Iceland (Photo: Janka)
View on the exceptionally clear waters of lake Öskjuvatn, Askja caldera, Iceland (Photo: Janka)
 



See also: Sentinel hub | Landsat 8 | NASA FIRMS

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