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Sources of Water Mass

Sub-surface water masses formation is more active in the North & South Atlantic & the South Pacific & moderately active in the North Pacific. The sub-surface water masses is not active in the Indian Ocean because of its location in the southern hemisphere. The following arte major source areas of the origin of subsurface water masses-
                                          i.         Norwegian Sea Area,
                                         ii.         Irminger Sea,
                                       iii.         Weddell Sea of Antarctica,
                                       iv.         Antarctic Basin, north of Lazarev Sea to the North of Antarctica,
                                         v.         Extreme North Pacific between 45°-50° N latitudes, to the South of Aleutian Trench,

                                       vi.         Southern Ocean, to the south of Pacific Antarctic Ridge. 
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