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Askja vulcano

Aggiornato: 1 ott. 2022 06:09 GMT -
Stratovolcano 1516 m (4,974 ft)
Central Iceland, 65.03°N / -16.75°W
Stato attuale: inquieto (2 di 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.

Mostra la mappa interattiva
Stile eruttivo tipico: esplosivo effusiva
Eruzioni del vulcano Askja: 1797(?), 1875, 1919, 1921, 1922, 1923, 1924(?), 1926, 1938, 1961

Latest nearby earthquakes

Data / oraMag. / Prof.Distanza/Ubicazione
domenica, 25 settembre 2022 GMT (1 sismo)
25 set 2022 23:27 (GMT +0) (25 set 2022 23:27 GMT)
1.6

0.5 km
35 km (22 mi)
Iceland: 19.9 Km W of Herðubreiðarfjöll
sabato, 24 settembre 2022 GMT (2 sismi)
24 set 2022 19:23 (GMT +0) (24 set 2022 19:23 GMT)
1.9

0.6 km
21 km (13 mi)
Iceland: 10.3 Km WNW of Lokatindur
24 set 2022 10:50 (GMT +0) (24 set 2022 10:50 GMT)
1.6

3.3 km
0.8 km (0.5 mi)
Iceland: 7.5 Km W of Dreki

Sfondo

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 Photos




See also: Sentinel hub | Landsat 8 | NASA FIRMS

Wed, 3 Aug 2022, 14:00

Askja volcano (Iceland) - Smithsonian / USGS Weekly Volcanic Activity Report for 27 July-2 August 2022 (New Activity / Unrest)

On 27 July IMO stated that uplift at Askja began in August 2021 and since then had totaled 35 cm, centered in the W part of Askja lake. The uplift was rapid, compared to similar volcanoes around the world, and likely caused by a magmatic intrusion at an estimated depth of 2 km. Seismicity remained low. ... Read all
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