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The ice has been playing havoc with operations down here. The iceberg you are referring to has prevented the sea ice from melting for the last 3 years now. We used to get open water here in the summer with whales and penguins but no longer. Instead the ice is now 14 feet thick and it takes two icebreakers to get our resupply boats in.
Is it global warming? I’m not sure that anyone knows the answer at this point. With all the icebergs breaking off  the Ross Ice Shelf, the ice has only gone back to where it was in the early 1900″s. The dry valleys, on the continent west of us have actually been getting colder for the last 15 years. Elsewhere in Antarctica the temps are warming. I guess we need more research to tell for sure. Before long I’ll have some photos of the ice to put here.