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Politics : Canadian Political Free-for-All
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To: Land Shark who wrote (12581)1/29/2008 8:07:13 PM
From: Stephen O  Read Replies (1) of 37182
 
Ice movements at the South Pole: theaustralian.news.com.au

sciencedaily.com
First Evidence Of Under-ice Volcanic Eruption In Antarctica

ScienceDaily (Jan. 22, 2008) - The first evidence of a volcanic eruption from beneath Antarctica's most rapidly changing ice sheet has been reported. The volcano on the West Antarctic Ice Sheet erupted 2000 years ago (325BC) and remains active.
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The subglacial volcano has a 'volcanic explosion index' of around 3-4. Heat from the volcano creates melt-water that lubricates the base of the ice sheet and increases the flow towards the sea. Pine Island Glacier on the West Antarctic Ice Sheet is showing rapid change and BAS scientists are part of an international research effort to understand this change.

Volcanic eruptions were common during the past 25 million years, and coincided with the great period of climatic deterioration that resulted in the formation of the Antarctic ice sheet. Many of the volcanoes show the effects of interaction with ice. BAS has played a major role in describing these effects and modelling their influences on the resulting volcanic sequences. It is important to describe and understand these interactions in geologically recent times in order to predict future configurations of the ice sheet and its role in the global system.
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