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Upwelling near Samalga Pass 1
Author(s) -
Swift James H.,
Aagaard Knut
Publication year - 1976
Publication title -
limnology and oceanography
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.7
H-Index - 197
eISSN - 1939-5590
pISSN - 0024-3590
DOI - 10.4319/lo.1976.21.3.0399
Subject(s) - upwelling , hydrography , photic zone , oceanography , entrainment (biomusicology) , oxygen minimum zone , oxygen , geology , environmental science , nutrient , chemistry , phytoplankton , ecology , biology , rhythm , philosophy , organic chemistry , aesthetics
Recent summer hydrographic data from the vicinity of Samalga Pass in the eastern Aleutians show upwelling of relatively saline water, poor in oxygen and rich in nutrients. A steady state oxygen model in which the photosynthetic production of oxygen in the euphotic zone is balanced by an upwelling of low‐oxygen water yields an upper bound on the vertical velocity of 7 × 10 ‒3 cm s ‒1 . Examination of various possible driving mechanisms for the upwelling, including winds and entrainment, suggests that the upwelling is driven by subsurface convergence.