Everything about Pack Ice totally explained
Drift ice is
sea ice that floats on the surface of the water in cold regions, as opposed to
fast ice, which is attached ("fastened") to a shore. Usually drift ice is carried along by winds and
sea currents, hence its name, "
drift ice".
When the drift ice is driven together into a large single mass, it's called
pack ice. Typically areas of pack ice are identified by high percentage of surface coverage by ice: for example, 80-100%.
An
ice floe is a large piece of drift ice that might range from tens of metres (yards) to several kilometrmiles in
diameter. Wider chunks of ice are called
ice fields.
The two major ice packs are the
Arctic ice pack and the
Antarctic ice pack.
In many areas such as the
Baltic, drift ice is traditionally a seasonal event, appearing in winter and vanishing in warmer seasons.
Seasonal ice drift in the
Sea of Okhotsk by the northern coast of
Hokkaidō,
Japan has become a tourist attraction of this area with harsh
climate. Sea of Okhotsk is the southernmost area in the
Northern hemisphere where drift ice may be observed.
The major aspects of the drift ice are:
Polar ice packs
The most important areas of pack ice are the Polar ice packs formed from
seawater in the Earth's
polar regions: the Arctic ice pack of the
Arctic Ocean and the Antarctic ice pack of the
Southern Ocean. Polar packs significantly change their size during seasonal changes of the year. Because of vast amounts of water added to or removed from the oceans and
atmosphere, the behavior of polar ice packs has a significant impact of the global changes in
climate.
Further Information
Get more info on 'Pack Ice'.
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