Thordarhyrna

Thordarhyrna (Icelandic: Þórðarhyrna [ˈθourðarhɪrtna]) is one of seven[1] subglacial volcanoes beneath the Vatnajokull glacier Iceland.

Thordarhyrna
Thordarhyrna
Highest point
ListingList of volcanoes in Iceland
Coordinates64°12′4″N 17°0′17″W 
Geology
Mountain typeSubglacial volcano
Last eruption1910

Eruptions

It last erupted in 1910 and prior to that in 1903.[2][3]

An eruption in 3550 BC ± 500 years poured out 150,000,000 cubic meters of lava in the area Bergvatnsárhraun to the south of Thordarhyrna.[4]

An eruption between 1887 and 1889 had a VEI of 2.[5]

Geology

There is a mechanical interaction between Thordarhyrna and Grimsvötn, despite these volcanoes being relatively far apart,[6] so the eruption in 1902 - 1904 was combined with an eruption from Grimsvötn and had a Volcanic Explosivity Index (VEI) of 4.[7]

A fault runs (N.35°W) from Thordarhyrna towards Hamarinn, and separates two different tectonic regions.[8]

See also

References
  1. "Archived copy" (PDF). Archived from the original (PDF) on 2012-03-09. Retrieved 2011-05-24.CS1 maint: archived copy as title (link) Figure 2.8 shows 7 volcanoes beneath the glacier
  2. "Archived copy". Archived from the original on 2012-12-21. Retrieved 2011-05-24.CS1 maint: archived copy as title (link) Eruptions in Iceland since 1900
  3. "Archived copy". Archived from the original on 2011-05-27. Retrieved 2011-05-27.CS1 maint: archived copy as title (link)
  6. "Elsevier".
  8. Surface and bedrock topography mapped by radio echo sounding


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