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Thordarhyrna
Thordarhyrna is located in Iceland
Thordarhyrna
Thordarhyrna
Highest point
ListingList of volcanoes in Iceland
Coordinates64°12′4″N 17°0′17″W / 64.20111°N 17.00472°W / 64.20111; -17.00472
Geology
Mountain typeSubglacial volcano
Last eruption1910

Thordarhyrna (Icelandic: Þórðarhyrna [ˈθourðarˌhɪ(r)tna] ⓘ) is one of seven[1] subglacial volcanoes beneath the Vatnajokull glacier in Iceland.

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 of 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.((cite web)): CS1 maint: archived copy as title (link) Figure 2.8 shows 7 volcanoes beneath the glacier
  2. ^ "Eruptions in Iceland during the 20th and the 21st centuries". Archived from the original on 2012-12-21. Retrieved 2011-05-24. Eruptions in Iceland since 1900
  3. ^ "Eruptions beneath Vatnajökull". Archived from the original on 2011-05-27. Retrieved 2011-05-27.
  4. ^ http://www.volcano.si.edu/world/volcano.cfm?vnum=1703-01=&volpage=erupt
  5. ^ http://www.volcano.si.edu/world/volcano.cfm?vnum=1703-01=&volpage=erupt
  6. ^ Andrew, Ruth E. B. (20 November 2008). "Elsevier". Journal of Volcanology and Geothermal Research. Volcanic Flows and Falls. 177 (4): 1045–1054. doi:10.1016/j.jvolgeores.2008.07.025.
  7. ^ http://www.volcano.si.edu/world/volcano.cfm?vnum=1703-01=&volpage=erupt
  8. ^ http://www.igsoc.org/login/?returnto=/annals/8/igs_annals_vol08_year1985_pg11-18.pdf Surface and bedrock topography mapped by radio echo sounding


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