sea ice

sea ice

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  • sea ice — Ice formed from frozen seawater in polar regions. Most sea ice occurs as pack ice, which drifts across the ocean surface; other types of sea ice include fast ice, which is attached to coasts and sometimes the seafloor or between grounded icebergs …   Universalium

  • Sea ice — is largely formed from seawater that freezes. Because the oceans consist of saltwater, this occurs below the freezing point of pure water, at about 1.8 °C (28.8 °F). Sea ice may be contrasted with icebergs, which are chunks of ice shelves or… …   Wikipedia

  • sea ice — noun : ice formed by the freezing of seawater : masses of floating ice that have drifted to sea * * * sea ice noun • • • Main Entry: ↑sea * * * sea ice, frozen seawater. Sea ice has many saltwater pockets. »Both the theory and tests disprove the… …   Useful english dictionary

  • sea ice — /ˈsi aɪs/ (say see uys) noun ice made of frozen sea water as waters in polar regions roughly of latitudes greater than 60° become colder with the approach to winter. See pack ice …  

  • sea ice — pack ice (floating ice that has been driven together into a single mass) …   Dictionary of ichthyology

  • Measurement of sea ice — Annual growth and retreat of the polar ice packs from SeaWiFS images Measurement of sea ice is important for safety of navigation and for monitoring the environment, particularly the climate. Record keeping of direct observations began over a… …   Wikipedia

  • Arctic sea ice ecology — The Arctic sea ice covers approximately 7x106 km2 in the summer and twice that in the winter. The multi year sea ice reaches a thickness of 2–3m and covers nearly all of the central deep basins.The Arctic sea ice and its related biota are unique …   Wikipedia

  • Lead (sea ice) — Leads /ˈliːdz/ are stretches of open water within fields of sea ice.[1] Leads are caused by movements of the ice due to wind, or to currents in the underlying water, and may open and close again within a brief period; alternatively they may… …   Wikipedia

  • Ice algae — is a general term used to describe all the various types of algal communities encountered in annual and multi year sea ice. The ice algal communities play an important role in primary production and are therefore considered an important part of… …   Wikipedia

  • Ice drift — is movement of ice. An important type of ice drift it drift of the sea ice, i.e., of the drift ice. Unless specified otherwise, this article discusses the drift of the sea ice. The direction of the ice drift is the vector sum of the oceanic and… …   Wikipedia

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