Iceberg off Antarctic Peninsula
January 16, 2007
It was one of those miserable gray, windy days on the Antarctic Peninsula. Just about everyone on our cruise ship went down to their cabins or the library. I wasn't quite ready to leave the deck yet and happened to notice another cruise ship maneuvering near the iceberg in the distance. Though it looks enormous in comparison to the ship, as a matter of fact, this was an ordinary iceberg -- rather small in size. Later when were in the Ross Sea, we used a helicopter to land on the B-15 iceberg -- it was big as a small U.S. state. The aquamarine colors seen in many icebergs is caused by ice crystals more effectively absorbing the longer wavelengths of sunlight (reds and yellows) than the shorter wavelengths (blues and greens).