The Markham Ice Shelf was one of five major

ice shelves An ice shelf is a large floating platform of ice that forms where a glacier or ice sheet flows down to a coastline and onto the ocean surface. Ice shelves are only found in Antarctica, Greenland, Northern Canada, and the Russian Arctic. The b ...

Canada Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by tot ...

, all on the north coast of Ellesmere Island, Nunavut. The ice shelf broke off from the coast in early August 2008, becoming adrift in the

Arctic Ocean The Arctic Ocean is the smallest and shallowest of the world's five major oceans. It spans an area of approximately and is known as the coldest of all the oceans. The International Hydrographic Organization (IHO) recognizes it as an ocean, a ...

. The 4,500-year-old ice shelf was then in size, nearly the size of

Manhattan Manhattan (), known regionally as the City, is the most densely populated and geographically smallest of the five boroughs of New York City. The borough is also coextensive with New York County, one of the original counties of the U.S. state ...

, and approximately ten stories tall. On September 3, 2008,

CNN CNN (Cable News Network) is a multinational cable news channel headquartered in Atlanta, Georgia, U.S. Founded in 1980 by American media proprietor Ted Turner and Reese Schonfeld as a 24-hour cable news channel, and presently owned by ...

quoted Derek Mueller, of

Trent University Trent University is a public liberal arts university in Peterborough, Ontario, with a satellite campus in Oshawa, which serves the Regional Municipality of Durham. Trent is known for its Oxbridge college system and small class sizes.

Ontario Ontario ( ; ) is one of the thirteen provinces and territories of Canada.Ontario is located in the geographic eastern half of Canada, but it has historically and politically been considered to be part of Central Canada. Located in Central C ...

, Canada as saying to the

Associated Press The Associated Press (AP) is an American non-profit news agency headquartered in New York City. Founded in 1846, it operates as a cooperative, unincorporated association. It produces news reports that are distributed to its members, U.S. ne ...

: According to images from NASA, the ice shelf completely disintegrated over a period of 6 days in August 2008. By 2015, it had completely melted. The ice shelf was named for

Albert Hastings Markham Admiral Sir Albert Hastings Markham (11 November 1841 – 28 October 1918) was a British explorer, author, and officer in the Royal Navy. In 1903 he was invested as a Knight Commander of the Order of the Bath. He is also remembered for desig ...

, a British Arctic explorer.

References

Ellesmere Island Ice shelves of Qikiqtaaluk Region {{QikiqtaalukNU-geo-stub

Further reading

References