Grímsvötn

Grímsvötn (; vötn = "waters", singular: ) is an active volcano with a (partially subglacial) fissure system located in Vatnajökull National Park, Iceland. The central volcano is completely subglacial and located under the northwestern side of the Vatnajökull ice cap. The subglacial caldera is at , at an elevation of . Beneath the caldera is the magma chamber of the Grímsvötn volcano.

AI overview

Grímsvötn is an active volcano in Iceland located beneath the Vatnajökull ice cap in Vatnajökull National Park. Much of the volcano is hidden under glacial ice, with its subglacial magma chamber playing an important role in Iceland's volcanic activity.

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Key facts

Mountain.name: Grímsvötn
Mountain.photo: Iceland_Grimsvoetn_1972-B.jpg
Mountain.photo_caption: Grímsvötn and the Vatnajökull glacier, Iceland, July 1972
Mountain.elevation_m: 1725
Mountain.listing: List of volcanoes in Iceland
Mountain.location: Austur-Skaftafellssýsla / Vestur-Skaftafellssýsla, Iceland
Mountain.map: Iceland
Mountain.relief: 1
Mountain.label_position: right
Mountain.type: Volcanic caldera
Mountain.last_eruption: May 2011

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Described at

Icelandic Volcanoes

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Wikidata facts

Elevation: 1725
Image: Iceland Grimsvoetn 1972-B.jpg

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Commons category: Grímsvötn
Commons gallery: Grímsvötn
native label: Grímsvötn
described at URL: icelandicvolcanoes.is//?volcano=GRV

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Article

14 sections

Contents

Jökulhlaup
Eruption history between 1990 and today
Gjálp 1996
1998 and 2004 eruptions
2011 eruption
2020 onward threats of eruption
Eruption history before 1990
Bacteria in the subglacial lakes
Geology
Future trends
See also
Notes
References
External links

Grímsvötn is a basaltic volcano which has the highest eruption frequency of all the volcanoes in Iceland. It has a southwest-northeast-trending fissure system. The massive climate-impacting Laki fissure eruption of 1783–1784 took place in a part of the same Grímsvötn-Laki volcanic system. Grímsvötn was erupting at the same time as Laki during 1783, but continued to erupt until 1785. Because most of the volcanic system lies underneath Vatnajökull, most of its eruptions have been subglacial and the interaction of magma and meltwater from the ice causes phreatomagmatic explosive activity. Within the Grímsvötn-Laki volcanic system is a second central volcano called Thordarhyrna (Þórðarhyrna).