The distribution of dissolved silica in the deep western North Atlantic Ocean
Needell, Gerald J.
MetadataShow full item record
LocationWestern North Atlantic Ocean
KeywordSilica; Chemical oceanography; Composition of seawater; Atlantis II (Ship : 1963-) Cruise AII100; Knorr (Ship : 1970-) Cruise KN48; Chain (Ship : 1958-) Cruise CH20
The distribution of dissolved silica in the deep western North Atlantic Ocean is presented. The potential temperature-dissolved silica relationship is compared with the potential temperature salinity relationship in the North Atlantic Deep Water. Geographical variations in the potential temperature- dissolved silica relationship are discussed with particular emphasis on the low silica signal of the Western Boundary Undercurrent (WBUC). The WBUC is shown to have a significant influence on the potential temperature-dissolved silica relationship from the tail of the Grand Banks of Newfoundland to Cape Hatteras. It is suggested that a region of enhanced mixing is present west of 65°W that is responsible for the observed changes in the dissolved silica distribution.
Submitted in partial fulfillment of the requirements for the degree of Master of Science at the Massachusetts Institute of Technology and the Woods Hole Oceanographic Institution November, 1978
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