Has to breach the tropopause to have a major impact, that is around 17km at that latitude. It is currently only 6km.dohboi wrote:http://www.wired.com/wiredscience/2013/11/eruption-at-sinabung-intensifies/
http://weather.aol.com/2013/11/15/look- ... g-volcano/
Dangerous New Eruption at Sumatra's Sinabung Volcano
Officials worry the intensity of eruptions may be increasing
If so, what will the impact be on world weather?
ETA: More photo's/video of the eruption (with side benefit--best butt in Brazil! You couldn't make this stuff up.)
http://www.huffingtonpost.com/2013/11/1 ... 83180.html
Bardarbunga is Iceland's largest volcanic system, located under the ice cap of the Vatnajokull glacier in the southwest of Iceland. It is in a different range to Eyjafjallajokull.
Icelandic Met Office has moved the warning level for air traffic up to Orange level (see here). GPS measurement have confirmed magma movements inside Bárðarbunga volcano and this movement is fast.
In Icelandic, ð represents a (usually apical) voiced alveolar non-sibilant fricative [ð̠],[3][4] similar to the th in English "them"
Will lava soon hit glacier ice, unleashing an explosion that would spew ash and steam high in the atmosphere?
The Icelandic Meteorology Office (IMO) thinks that the probability of such an event in their country has increased. Through August 16, 2014, the risk level had been at code green – a “background, non-eruptive state.”
The IMO has upgraded the risk twice in the last two days, on August 17 to code yellow, and early in the day on August 18 to code orange, indicating that a “volcano shows heightened or escalating unrest with increased potential of eruption.”
Twenty thousand years ago, Iceland was entirely covered by a layer of ice that averaged close to a kilometer in thickness. Around 15-16,000 year ago, planetary warming triggered rapid melting of the glaciers, reducing the load acting on the volcanoes beneath and on the underlying asthenosphere.
By 12,000 years ago unloading was sufficiently advanced to trigger a spectacular response. Over a period of 1500 years or so, the volcanic eruption rate jumped by between 30 and 50 times, before falling back to today's level.
This volcanic rejuvenation was in part a reflection of the release of magma held ready and waiting, within and beneath the volcanoes themselves, but mainly testament to a huge increase in the supply of fresh magma from deeper within the Earth. Such was the load reduction due to the rapid loss of ice mass, that the depressed lithosphere quickly bounced back by as much as half a kilometer, dramatically reducing the pressures in the asthenosphere and triggering a 30-fold jump in magma production.
In his latest book, Waking the Giant,he argues temperature change brought about by global warming could release pressure from melting ice caps (through post-glacial rebound) and trigger quakes and volcanic eruptions...
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