iceberg


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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 ?
When the iceberg, called A-68, completely broke off, it reduced the size of the Larsen C ice shelf by a whopping 12 percent.
In our study, we apply a number of approximations to the momentum balance for an iceberg in order to derive an analytical solution for the iceberg velocity as a function of time.
According to scientists, the iceberg "behaves properly" at this point.
The calving of the iceberg, which is likely to be named A68, reduces the size of the Larsen C Ice Shelf by around 12% and will change the landscape of the Antarctic Peninsula forever, the scientists said.
The iceberg is one of the largest recorded and its future progress is difficult to predict," said Adrian Luckman, professor at Swansea University and lead investigator of Project MIDAS, which has been monitoring the ice shelf for years.
Al Shehi told Gulf News in an interview on Tuesday that despite expected scepticism from naysayers, his firm has already run the iceberg transportation route and variables through simulators to help frame the feasibility of what he is calling the UAE Iceberg Project.
All other colors are absorbed into the iceberg, but blue light is scattered.
Starting in early May the majority of the multiphase program will focus on expanding the extent of the high-grade zones in the Iceberg deposit, with a sizable portion directed towards exploring other prospective Carlin-type gold systems on the property, principally the Avocado, VIO and Jasperoid Basin gold anomalies.
In 2007 the cruise ship Explorer sank in Antarctica's Weddell Sea after an iceberg strike.
In 2007, the cruise ship Explorer sank in Antarctica's Weddell Sea after an iceberg strike.
Bubble-free ice absorbs red and yellow light while reflecting blue light, giving the upturned iceberg its spectacular color.
Rigs at risk from drifting icebergs can expect an early warning following research by the Memorial University of Newfoundland.