Shore lead

Shore lead
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. ^ a b Aufderheide, A.C.; Pitzl, G., Plaisted Polar Expedition 1968 (1968). "Observations on Ice Regions of the Arctic Ocean". Arctic (ucalgary.ca) 23 (2): 135, 136. ISSN 0066-6963. OCLC 183414927. http://pubs.aina.ucalgary.ca/arctic/Arctic23-2-133.pdf. 
  3. ^ a b "Lead". dbcp.noaa.gov. http://www.dbcp.noaa.gov/seashelp/HtmlIceGlossary.htm. Retrieved 2008-10-30. 



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