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Physical-biological interactions in the Southern Ocean

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dc.contributor.advisor Abbott, Mark R.
dc.creator Moore, Jefferson Keith
dc.date.accessioned 2012-02-15T22:42:11Z
dc.date.available 2012-02-15T22:42:11Z
dc.date.copyright 1999-06-10
dc.date.issued 1999-06-10
dc.identifier.uri http://hdl.handle.net/1957/27780
dc.description Graduation date: 2000 en_US
dc.description.abstract Physical-biological interactions in the Southern Ocean were investigated using remote sensing data from several different satellite sensors. Satellite sea surface temperature data were used to study the dynamics of the Antarctic Polar Front (PF). Satellite ocean color data were used to estimate surface chlorophyll concentrations and their relation to various physical forcings within the Southern Ocean. A detailed study of phytoplankton blooms at the Antarctic Polar Front revealed that elevated chlorophyll concentrations (phytoplankton blooms) occur most often in areas where the PF interacts with large topographic features within the Southern Ocean. The physical dynamics of the PF are strongly influenced by the topography, and in turn strongly influence phytoplankton bloom dynamics. The analysis of satellite data from the modern Southern Ocean indicates that phytoplankton are limited by the availability of the micronutrient iron in most areas. This iron-limitation implies that the elevated iron inputs during glacial periods would have led to increased phytoplankton primary and export production and a stronger sink for atmospheric CO₂ in the Southern Ocean. en_US
dc.language.iso en_US en_US
dc.subject.lcsh Antarctic Ocean -- Remote sensing en_US
dc.subject.lcsh Marine phytoplankton -- Ecology -- Antarctic Ocean en_US
dc.title Physical-biological interactions in the Southern Ocean en_US
dc.type Thesis/Dissertation en_US
dc.degree.name Doctor of Philosophy (Ph. D.) in Oceanography en_US
dc.degree.level Doctoral en_US
dc.degree.discipline Oceanic and Atmospheric Sciences en_US
dc.degree.grantor Oregon State University en_US
dc.description.digitization File scanned at 300 ppi (Monochrome, 24-bit Color) using Capture Perfect 3.0.82 on a Canon DR-9080C in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR. en_US
dc.description.peerreview no en_us

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