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Bardarbunga volcano
Stratovolcano approx. 2000 m / ca. 6,560 ft
Central Iceland, 64.63°N / -17.53°W
Current status: normal or dormant (1 out of 5)
Bardarbunga webcams / live data | Reports
Bardarbunga volcano books
Bardarbunga volcano eruptions:
1080(?), 1159(?), ca. 1210, ca. 1270, ca. 1350, ca. 1410(?), 1477 (very large effusive-explosive eruption), 1697, 1702, 1706, 1712, 1716, 1717, 1720, 1726, 1729, 1739, 1750, 1766, 1769, 1797, 1807(?), 1862-64, 1872(?), 1902-03, 1910, 2014-15 (Holuhraun fissure eruption)
Typical eruption style:
Large effusive eruptions, some explosive activity.
Last earthquakes nearby
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Bárdarbunga volcano news & activity updates

Bardarbunga volcano update: Update: eruption could go on for many months

Tuesday Feb 03, 2015 07:08 AM | BY: T

Thickness map of the Holuhraun lava flow field (Scientific Advisory Board)
Thickness map of the Holuhraun lava flow field (Scientific Advisory Board)
Caldera subsidence over the past months (Scientific Advisory Board)
Caldera subsidence over the past months (Scientific Advisory Board)
Seismic activity under the dyke (IMO) and the Bárðarbunga caldera (blue) (Scientific Advisory Board)
Seismic activity under the dyke (IMO) and the Bárðarbunga caldera (blue) (Scientific Advisory Board)
Graph showing the measured and extrapolated subsidence of the caldera (Scientific Advisory Board)
Graph showing the measured and extrapolated subsidence of the caldera (Scientific Advisory Board)
The eruption, now going on for more than 150 days, continues with little changes. Although it has started to decrease, very slowly, in intensity, it remains impressive and magma discharge is still an impressive approx. 100 cubic meters per second.
Caldera subsidence and seismicity continue as well, but a slow decreasing trend of subsidence rate - from initially 50 cm a day to now about half of that now - is visible as well and seems to correlated with the decrease in magma effusion. Icelandic scientists think therefore that subsidence (and hence, the eruption,) might go on for another 5 to 16 months.
The latest report by the Scientific Advisory Board gives a detailed overview, summarized here:
The above prediction, based on extrapolation of measurements and simple models, must be seen with caution:
"It is entirely possible that the eruption will end sooner than predicted above. It is also possible that the eruption could become stable and go on for years, but with a greatly reduced magma flow rate.
An eruption in Bardarbunga is still possible even though the development described above will continue. Even though the volcanic eruption in Holuhraun stops in the coming months it is not certain that the current rifting episode is at an end. It is still possible that an eruption may start on another part of the fissure swarm within the Bardarbunga volcanic system."
"... Three scenarios are considered most likely:
1) The eruption in Holuhraun continues until the subsidence of the Bardarbunga caldera stops. The eruption can still go on for many months.
2) The volcanic fissure may lengthen southwards under Dyngjujokull, resulting in a jokulhlaup and an ash-producing eruption. It is also possible that eruptive fissures could develop in another location under the glacier. If such an eruption would be prolonged it could eventually produce a lava flow.
3) Volcanic eruption in the Bardarbunga caldera. Such an eruption would melt large quantities of ice, leading to a major jokulhlaup, accompanied by ash fall.

Other scenarios cannot be excluded."

Finally, here's an impression from the eruption site in the past days, showing the still large river of lava issuing from the Baugur crater:



Previous news
Earthquakes at Bardarbunga yesterday (IMO)
Friday, Jan 30, 2015
A small earthquake swarm at 1 km below the eastern rim of the Bardarbunga caldera occurred yesterday evening at 21:22 local time, accompanied by a rise in tremor. ... [more]
Comparison of the Baugur vent showing the decrease in activity (photo: Morten S.Riishuus & Ármann Höskuldsson / IES FVNH)
Wednesday, Jan 28, 2015
The visible intensity of the eruption continues to decrease gradually. The Icelandic Met office conducted air-borne measurements of the lava field last week, showing that it has significantly thickened (rather than expanded laterally) during the past weeks, and is now estimated to contain approx. 1.4 cubic kilometers of lava. Effusion rates, although decreasing, are still close to an impressive 100 m³ per second. [more]
The southern end of the rampart; surveillance flight with the Icelandic Coast Guard 21 January 2015. Various measurements were made and the results will be published shortly. Photo: Morten S. Riishuus.(IMO)
Friday, Jan 23, 2015
No significant changes in seismic and volcanic activity have occurred recently at the ongoing Holuhraun eruption, but overall, a slowly decreasing trend of the activity is becoming evident. Still, magma effusion remains quite impressive, especially the large lava lake inside Baugur crater on the main part of the fissure. ... [more]
Observed caldera subsidence versus time - if the modeled curve is correct, it should flatten out in March this year and might mean the end of the eruption (source: visir.is)
Monday, Jan 19, 2015
According to Icelandic volcanologist Haraldur Sigurðsson, it is reasonable to predict that the eruption might be ending in March this year. ... [more]
Map of the Nornahraun lava field as of 10 Jan 2015 (Univ. Iceland)
Monday, Jan 12, 2015
Lava effusion continues at high rates and enlarges the lava field, now covering more than 84 square kilometers. ... [more]

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