iceberg


Also found in: Dictionary, Thesaurus, Medical, Legal, Idioms, Wikipedia.
Related to iceberg: Burberry, titanic

iceberg,

mass of ice that has become detached, or calved, from the edge of an ice sheet or glacier and is floating on the ocean. Because ice is slightly less dense than water about one ninth of the total mass of a berg projects above the water. Greenland and other N Atlantic icebergs are usually peaked and irregular in shape; Antarctic icebergs are tabular, with flat tops and steep sides, and are sometimes extremely large when calved from an ice shelf. Icebergs differ from other ocean ices: sea ice is formed directly from the freezing of ocean water; pack ice is tightly packed fragments of sea ice; ice floes are small, floating ice fragments that separate from pack ice; and fast ice is ice attached to a shore.

Greenland is the source of most of the icebergs in the N Atlantic, where the iceberg season lasts roughly from February to October. As a consequence of the loss of the Titanic through collision with an iceberg in 1912, a patrol of N Atlantic shipping channels was initiated in 1914 by the international agreement of 16 nations. Patrols use planes and surface vessels equipped with radar, loran, and underwater sound equipment. A constant census of bergs is maintained, and the location of an iceberg is reported to any ship in its vicinity.

iceberg

[′īs‚bərg]
(oceanography)
A large mass of glacial ice broken off and drifted from parent glaciers or ice shelves along polar seas; it is distinguished from polar pack ice, which is sea ice, and from frozen seawater, whose rafted or hummocked fragments may resemble small icebergs.

iceberg

a large mass of ice floating in the sea, esp a mass that has broken off a polar glacier
References in periodicals archive ?
The giant iceberg, known as B15A, is now moving slowly out of McMurdo Sound, where it had blocked sea access, said Lou Sanson, chief executive of the government scientific agency Antarctica New Zealand.
An average iceberg contains more than 20 billion gallons of water.
$80 MILLION - Maximum estimated cost of the iceberg pilot scheme.
Climate researchers from the University of Hawaii (USA), the IBS Center for Climate Physics (South Korea), Penn State University (USA) and University of Massachusetts (USA) have now quantified for the first time this effect of Antarctic iceberg calving on future Southern Hemisphere climate.
Some are even marketing "iceberg water" as the purest on Earth -- and selling it as a high-end luxury item.
He plans to tow an iceberg from its current location off of Antarctica to a position 3 kilometers off the Fujairah coast.
This fracture only has a few more miles before it reaches the Halloween crack and, once that happens, the shelf will release an iceberg measuring more than (https://www.livescience.com/64843-brunt-shelf-iceberg.html) twice the area of New York City and will be the biggest iceberg to break off from the Brunt Ice Shelf since 1915.
NASA also observed that the iceberg's sharp angles and the flat surface were an indication of the fact that it was probably "calved from the ice shelf."
Health director-general Datuk Dr Noor Hisham Abdullah said the Agri-Food and Veterinary Authority of Singapore (AVA) had issued a recall for the iceberg lettuce after it detected high levels of pesticide in the vegetable imported from Malaysia.
The iceberg has come close to properties on the island of Innaarsuit in western Greenland, whose population of 169 have been evacuated from their homes.