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View Full Version : Possible natural explanation found for West Antarctica's warming


JusBringIt
01-24-2009, 08:23 AM
"Indirect evidence suggests that volcanic activity occurring beneath the West Antarctic ice_sheet influences ice_flow and sheet stability." (tgdaily.com/content/view/41171/117/)

http://www.cleanmpg.com/photos/data/501/warmer_antartica.jpgRick Hodgin - NYT - Jan. 23, 2009

Well this is sure to rustle some feathers -- Ed.

South Pole - In 2008, scientists from the British Antarctic Survey reported a layer of volcanic ash and glass shards frozen within an ice sheet in western Antarctica [the same place the one degree Fahrenheit warming has been reported]. The volcano beneath the ice sheet "punched a hole right through" due to its heat and force. This geologic event (a volcano) may prove to be the source of the recent warming seen in West Antarctica in what has otherwise been reported as a 50-year cooling trend seen in East Antarctica.

Dr. David G. Vaughan of the British Antarctic Survey said, "This is the first time we have seen a volcano beneath the ice sheet punch a hole through the ice sheet."

From The New York Times:

"Heat from a volcano could still be melting ice and contributing to the thinning and speeding up of the Pine Island Glacier, which passes nearby, but Dr. Vaughan doubted that it could be affecting other glaciers in West Antarctica, which have also thinned in recent years. Most glaciologists, including Dr. Vaughan, say that warmer ocean water is the primary cause." ... http://www.tgdaily.com/content/view/41171/117/

jkp1187
01-24-2009, 08:43 AM
Also from The New York Times (http://www.nytimes.com/2009/01/22/science/earth/22climate.html?ref=science) (Jan. 21, 2009):

"Because the climate record is still short, more work needs to be done to determine how much of the warming results from natural climate swings and how much from the warming effects of carbon dioxide released by the burning of fossil fuels, Dr. Steig said."

mdensch@charter.net
01-24-2009, 11:37 AM
. . . the more we learn, the more we learn that we don't know much . . .



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