News from Grímsvötn volcano, Iceland:
Grimsvötn volcano (Iceland): New Eruption
Sunday May 22, 2011 04:41 AM |
A new eruption started at Grimsvötn volcano, located under the Vatnajökull icecap late on 21 May yesterday evening at around 17h15 local time.
The eruption was preceded by only 15-30 minutes of intense seismic activity and started at around 19h15 pm local time. It created a large eruption plume above the glacier, reaching of 15-20 km height (50-65,000 feet), which is larger than last year's Eyafjallajökull's plume last year and makes it the largest eruption on Iceland since Hekla volcano in 1947.
Iceland review reports that a group of people stayed in a hut on Grímsvötn volcano the night before the eruption, but had left on Saturday 6 hours before the eruption started. The group noticed nothing unusual, but another group that climbed Hrútafellstindar mountain in the southern part of Vatnajökull glacier said they smelled suphur on the morning of 21st May.More than 100 people climbed Öræfajökull volcano, Iceland’s highest peak, on Saturday and saw nothing unusual.
The eruptions of Grimvötn often melt a hole in the ice cap and create devastating glacial floods (jökullhlaups). A flood is expected in the Skeidarársandur flood plain S of the glacier.
Grimsvötn is one of Iceland's most active volcano and erupts on average every 10 year, and the eruptions usually are short (few days to weeks only). Its last eruption was in 2004 and lasted 4 days.
Links / Sources:
Links / Sources:
- Saw the eruption starting various reports on Iceland Review Online
Wednesday, Nov 03, 2010
Signals of a possible impending eruption at Grimsvötn volcano under the icecap of Vatnajökullremain remain uncertain. Scientist measured an increase in seismic tremor at Grimsvötn, probably caused by the meltwater flow increase, but no volcanic tremor. The composition of the meltwater indicates that much of the water has been melted caused by increased geothermal heat flow. No other signs of an impending eruption are detectable (so far). [more]
Monday, Nov 01, 2010
Grímsvötn volcano on Iceland might be heating up to a new eruption. Recently, it has been observed that the amount of glacial meltwater from Grímsvötn emerging from under the thick ice cap of Vatnajökull covering the massive volcano has doubled. ... [more]