Icebergs
The
area known as "Iceberg Alley" is located about 250 miles east
and southeast of Newfoundland, Canada. Iceberg Alley is usually considered
as that portion of the Labrador Current that flows southward down Davis
Strait, along the eastern edge of the Grand Banks of Newfoundland to
the Tail of the Banks. Up to 20,000 icebergs, medium to large, are calved
each year off the west coast of Greenland, primarily from 20 major glaciers
between Jacobshaven and Humboldt Glaciers. About 7/8ths of an iceberg,
which is composed of frozen pure fresh drinking water, is below the
water line. Icebergs appear mostly white if the ice is full of tiny
air bubbles, and blue if the ice is bubble free. Every year the International
Ice Patrol detachment located in St. John's, Newfoundland, carefully
patrols and monitors Iceberg Alley for potentially dangerous icebergs
to prevent disasters, such as the Titanic (1912), from ever happening
again. [http//www.wordplay.com/tourism/icebergs/]
(picture source:http://www.wordplay.com/tourism/icebergs/photos.html )