Articles | Volume 12, issue 7
https://doi.org/10.5194/bg-12-2063-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Special issue:
https://doi.org/10.5194/bg-12-2063-2015
© Author(s) 2015. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Numerical analysis of the primary processes controlling oxygen dynamics on the Louisiana shelf
Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada
K. Fennel
Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada
A. Laurent
Department of Oceanography, Dalhousie University, Halifax, Nova Scotia, Canada
M. C. Murrell
US Environmental Protection Agency, Gulf Ecology Division, 1 Sabine Island Dr., Gulf Breeze, FL 32561, USA
J. C. Lehrter
US Environmental Protection Agency, Gulf Ecology Division, 1 Sabine Island Dr., Gulf Breeze, FL 32561, USA
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Saved (final revised paper)
Latest update: 23 Nov 2024
Short summary
Our study suggests that a combination of physical processes and sediment oxygen consumption determine the spatial extent and temporal dynamics of hypoxia on the Louisiana shelf. In summer, stratification isolates oxygen-rich surface waters from hypoxic bottom waters; oxygen outgasses to the atmosphere at this time. A large fraction of primary production occurs below the pycnocline in summer, but this primary production does not strongly affect the spatial extent of hypoxic bottom waters.
Our study suggests that a combination of physical processes and sediment oxygen consumption...
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