Τρίτη, 8 Μαρτίου 2011
Ο πάγος είναι ...από κάτω
"It's too early to know whether this new finding means that global warming will melt ice sheets slower or faster than scientists have predicted. But the work does suggest that current models of ice sheet dynamics are missing a huge factor, said glaciologist Donald Blankenship of the University of Texas, Austin. "The take-home message of this work is that [the bottom of ice sheets] can no longer be ignored" in the models, he says."
"...this refreeze phenomenon accounts for slightly more than half of the total ice thickness. That means in these locations, ice is being created faster on the bottom of the sheet than it is being accumulated through snow deposition on the top."