Earth:Shore lead

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Short description: Waterway opening between pack ice and shore
NOAA Ship Surveyor in 1977.

A shore lead (or coastal lead) is an oceanographic term for a waterway opening between pack ice and shore. While the gap of water[1] may be as narrow as a tide crack if closed by wind or currents, it can be as wide as 1,000 feet (300 m).[2] Its formation can be influenced by tidal action, or subsurface conditions, such as current and ocean floor.[2] Commonly, a shore lead is navigable by surface vessels.[3]

An opening ("lead") between pack ice and fast ice is referred to as a flaw lead.[3]

References

  1. ↑ "Annual Ice". eoearth.org. http://www.eoearth.org/article/Arctic_Ocean. Retrieved 2008-10-30. 
  2. ↑ 2.0 2.1 Aufderheide, A.C.; Pitzl, G. (1968). "Observations on Ice Regions of the Arctic Ocean". Arctic (ucalgary.ca) 23 (2): 135, 136. doi:10.14430/arctic3166. ISSN 0066-6963. OCLC 183414927. http://pubs.aina.ucalgary.ca/arctic/Arctic23-2-133.pdf. 
  3. ↑ 3.0 3.1 "Lead". dbcp.noaa.gov. Archived from the original on 2009-01-08. https://web.archive.org/web/20090108181615/http://www.dbcp.noaa.gov/seashelp/HtmlIceGlossary.htm. Retrieved 2008-10-30. 




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