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Deep Ocean Exchange with West-european Shelf Seas : Volume 6, Issue 2 (12/06/2009)

By Huthnance, J. M.

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Book Id: WPLBN0004021039
Format Type: PDF Article :
File Size: Pages 32
Reproduction Date: 2015

Title: Deep Ocean Exchange with West-european Shelf Seas : Volume 6, Issue 2 (12/06/2009)  
Author: Huthnance, J. M.
Volume: Vol. 6, Issue 2
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Wakelin, S. L., Huthnance, J. M., & Holt, J. T. (2009). Deep Ocean Exchange with West-european Shelf Seas : Volume 6, Issue 2 (12/06/2009). Retrieved from

Description: Proudman Oceanographic Laboratory, 6 Brownlow Street, Liverpool L3 5DA, UK. We review mechanisms and studies of exchange between the north-east Atlantic and the adjacent shelf sea. Mechanisms include: well-developed summer upwelling and associated filaments off Portugal and north-west Spain giving exchange O(3 m2/s per unit length of shelf); prevailing westerly winds further north driving exchange O(1 m2/s); poleward flow along most of the upper slope with associated secondary circulation O(1 m2/s); meanders and eddies in this poleward flow; eddies shed from slope waters into the Bay of Biscay; local exchanges at shelf spurs and depressions or canyons (e.g. dense-water cascading of order 1 m2/s). Tidal transports are larger; their reversal every six hours makes exchange largely ineffective except where internal tides are large and non-linear, as in the Celtic Sea where solitons carry water with exchange O(1 m2/s). These various physical exchanges amount to an estimated 2–3 m2/s per unit length of shelf, between ocean and shelf; a numerical model estimate is comparable: 2.5×106 m3/s onto and off the shelf from Brittany to Norway. Mixing controls the seasonal thermocline, affecting primary production and hence fluxes and fate of organic matter. Specifically, CO2 take-up by primary production, settling below the thermocline before respiration, and then off-shelf transport, make an effective shelf-sea pump (for CO2 from the atmosphere to the deep ocean). However, knowledge of biogeochemical fluxes is generally sparse; there is scope for more measurements, model validation and estimates from models.

Deep ocean exchange with west-European shelf seas

Allen, J. I., Blackford, J., Holt, J. T., Proctor, R., Ashworth M., and Siddorn, J.: A highly spatially resolved ecosystem model for the North West European continental shelf, Sarsia, 86, 423–440, 2001.; Barton, E. D., Inall, M. E., Sherwin, T. J., and Torres, R.: Vertical structure, turbulent mixing and fluxes during Lagrangian observations of an upwelling filament system off Northwest Iberia, Prog. Oceanogr., 51, 249–267, 2001.; Biscaye, P. E., Flagg, C. N., and Falkowski, P. G.: The Shelf Edge Exchange Processes experiment, SEEP-II: an introduction to hypotheses, results and conclusions, Deep-Sea Res. II, 41, 231–252, 1994.; Booth, D. A.: Horizontal dispersion in the north east Atlantic, Deep-Sea Res., 35, 1937–1951, 1988.; Burrows, M. and Thorpe, S. A.: Drifter observations of the Hebrides slope current and nearby circulation patterns, Ann. Geophys., 17, 280–302, 1999.; Burrows, M., Thorpe, S. A., and Meldrum, D. T.: Dispersion over the Hebrides and Shetland shelves and slopes, Cont. Shelf Res., 19: 49–55, 1999.; Cooper, L. N. H. and Vaux, D.: Cascading over the continental slope of water from the Celtic Sea, J. Mar. Biol. Assoc., UK, 28, 719–750, 1949.; Daniault, N., Mazé, J. P., and Arhan, M.: Circulation and mixing of Mediterranean water west of the Iberian peninsula, Deep-Sea Res., 41, 1685–1714, 1994.; Dickson, R. R. and McCave, I. N.: Nepheloid layers on the continental slope west of Porcupine Bank, Deep-Sea Res., 33, 791–818, 1986.; Fairall, C. W., Bradley, E. F., Hare, J. E., Grachev, A. A., and Edson, J. B.: Bulk parameterization of air-sea fluxes: updates and verification for the COARE algorithm, J. Climate, 16, 571–591, 2003.; Huthnance, J. M.: Slope currents and JEBAR, J. Phys. Oceanogr., 14, 795–801, 1984.; Huthnance, J. M.: Circulation, exchange and water masses at the ocean margin: the role of physical processes at the shelf edge, Prog. Oceanogr., 35, 353–431, 1995.; Fiuza, A. F. G., Hamann, M., Ambar, I., Del Rio, G. D., Gonzalez, N., Cabanas J. M., and Diaz Del Rio, G.: Water masses and their circulation off western Iberia during May 1993, Deep-Sea Res., 1(45), 1127–1160, 1998.; Frankignoulle, M. and Borges, A. V.: European continental shelf as a significant sink for atmospheric carbon dioxide, Global Biogeochem. Cy., 15, 569–576, 2001.; Frouin, R., Fiuza, A. F. G., Ambar I., and Boyd, T. J.: Observations of a poleward surface current off the coasts of Portugal and Spain during winter, J. Geophys. Res., 95, 679–691, 1990.; Harikrishnan, M.: Flow and water column structure at the Hebridean shelf-edge, PhD thesis, University of Wales, Bangor, xi + 86pp + figures, 1998.; Hickey, B. M. and Banas, N. S.: Why is the northern end of the California Current System so productive?, Oceanography, 21(4), 90–107, 2008.; Hill, A. E., Hickey, B. M., Shillington, F. A., Strub, P. T., Brink, K. H., Barton E. D., and Thomas, A. C.: Eastern Ocean Boundaries: Coastal Segment (E), edited by: Robinson, A. R. and Brink, K. H., The Sea, 11, 29–67, 1998.; Hill, A. E., Souza, A. J., Jones, K., Simpson, J. H., Shapiro, G. I., McCandliss, R., Wilson, H., and Leftley, J.: The Malin cascade in winter 1996, J. Mar. Res., 56, 87–106, 1998.; Holt, J. T. and Proctor, R.: The seasonal circulation and volume transport on the northwest European continental shelf: a fine-resolution model study, J. Geophys. Res., 113, C06021, doi:10.1029/2006JC004034, 2008.; Holt, J. T., Wakelin, S. L., and Huthnance, J. M.: The downwelling circulation of the northwest European continental shelf: a driving mechanism for the continental shelf carbon pump, Geophys. Res. Lett., accepted, 2009.; Hughes, C. W. and Meredith, M.P.: Coherent sea-level fluctuations along the global continental slope, Philos. T. R. Soc. Lond., A364, 885–901, 2006.; Holt, J. T., Wakelin, S. L., Smyth, T., Blackford, J. C., Allen, J. I., Proctor, R., and Ashworth, M.: Modelling the carbon fluxes of the North West European continental shelf: validation and budgets, in preparation, 2009.; H


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