Definition

1. Noun:
   • A large expanse of floating ice: "Pack ice" refers to a vast, continuous area of sea ice that is not attached to the shore. It is composed of individual pieces of ice (floes) that have been driven together into a consolidated mass, covering the sea surface.

Usage

• "Pack ice" is an uncountable noun used to describe the specific, dense ice cover found in polar seas.
• It is typically used in geographical, environmental, and exploratory contexts.

Examples

• The research vessel struggled to navigate through the dense pack ice of the Arctic Ocean.
• Satellite imagery shows the pack ice extending for hundreds of miles.
• The expedition's progress was halted by impassable pack ice.

Advanced Usage

• "To be beset by pack ice": To be surrounded and trapped by pack ice, often used in the context of ships.
  • The historic ship was beset by pack ice for months.
• "The pack ice edge" or "the edge of the pack ice": The boundary where the dense pack ice meets open water.
  • Marine mammals are often found near the pack ice edge.

Variants and Related Words

• Ice pack: A synonymous term, often used interchangeably with "pack ice."
• Floe (n): An individual, flat piece of sea ice. Pack ice is formed from many floes.
• Fast ice (n): Sea ice that is fastened to the coastline, contrasting with the floating, mobile pack ice.

Synonyms

• Ice field: A very large area of sea ice, often similar to pack ice but sometimes implying a single, extensive floe.
• Drift ice: Ice that floats on the sea driven by winds and currents; pack ice is a consolidated form of drift ice.

Related Phrases

• To break through the pack ice: For a ship to force a passage through pack ice.
  • The icebreaker was designed to break through the pack ice.
• Pack ice dynamics: A scientific term referring to the study of the movement and deformation of pack ice.
  • Her research focuses on pack ice dynamics in the Southern Ocean.

Noun

1. a large expanse of floating ice