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pack ice
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water glass on white background. (drink; clear; clean water; liquid)
Water and its Varying Forms
Iceland, Glacier lagoon (Jokulsarlon)
Winter Weather Words Quiz
Related Questions
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World map. Continents. Oceans. Mendel thumb ok
Just How Many Oceans Are There?
winter ice melting salt on the ground, pattern as background
Why Does Salt Melt Ice?
ripped torn flag, pirate, skull
Are There Laws on the High Seas?
A big, powerful wave breaking near the shore.
What Makes a Wave Go Rogue?
Sailboat against a beautiful landscape
Which Waters Do You Pass Through When You “Sail the Seven Seas”?
Discover
Young men throw balloons and glitter from above the mosque at the celebration Eid Al-Fitr after prayers playing with balloons outside of Al-seddeeq mosque, Al-Mansourah, Egypt. 17 July 2015.
Eid al-Fitr
Vietnam War. U.S. President Lyndon B. Johnson awards the Distinguished Service Cross to First Lieutenant Marty A. Hammer, during a visit to military personnel, Cam Ranh Bay, South Vietnam, October 26, 1966. President Johnson
Vietnam War Timeline
Solar eclipse of the sun.
The Sun Was Eaten: 6 Ways Cultures Have Explained Eclipses
After a perfect launch, spectators try to catch a last glimpse of Space Shuttle Columbia, barely visible at the top end of the twisted column of smoke.
7 Accidents and Disasters in Spaceflight History
Artist interpretation of a Space meteoroid impact. Meteor impact. Asteroid, End of the world, danger, destruction, dinosaur extinct, Judgement Day, Planet Earth, Doomsday Predictions, comet
10 Failed Doomsday Predictions
African Americans demonstrating for voting rights in front of the White House as police and others watch, March 12, 1965. One sign reads, "We demand the right to vote everywhere." Voting Rights Act, civil rights.
Timeline of the American Civil Rights Movement
A Factory Interior, watercolor, pen and gray ink, graphite, and white goache on wove paper by unknown artist, c. 1871-91; in the Yale Center for British Art. Industrial Revolution England
Inventors and Inventions of the Industrial Revolution
ice formation
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Also known as: ice pack, pack
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pack ice
pack ice
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Category: Geography & Travel
Also known as:
ice pack or pack
Related Topics:
sea ice
ice
polynya
pancake ice
lead
See all related content →

pack ice, any area of sea ice (ice formed by freezing of seawater) that is not landfast; it is mobile by virtue of not being attached to the shoreline or something else. Pack ice expands in the winter and retreats in the summer in both hemispheres to cover about 5 percent of the northern oceans and 8 percent of the southern oceans. See also sea ice.

Martin O. Jeffries