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Deep Convection and Deep Water Formation in the Oceans

1st Edition - September 17, 1991

Editors: Simon Chu, J.C. Gascard

eBook ISBN:

9 7 8 - 0 - 0 8 - 0 8 7 0 9 5 - 3

This book contains articles presenting current knowledge about the formation and renewal of deep waters in the ocean. These articles were presented at an international workshop at… Read more

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This book contains articles presenting current knowledge about the formation and renewal of deep waters in the ocean. These articles were presented at an international workshop at the Naval Postgraduate School in Monterey in March 1990. It is the first book entirely devoted to the topic of deep water formation in which articles have been both selected and reviewed, and it is also the first time authors have addressed both surface and deep mixed layers. Highlighted are: past and recent observations (description and analysis), concepts and models, and modern techniques for future research. Thanks to spectacular advances realised in computing sciences over the last twenty years this volume includes a number of sophisticated numerical models. Observational as well as theoretical studies are presented and a clear distinction is established between open-ocean deep convection and shelf processes, both leading to deep- and bottom-water formation. The main subject addressed is the physical mechanism by which the deep water in the ocean can be renewed. Ventilation occurs at the surface in areas called the gills, where water is mixed and oxygenated before sinking and spreading in the abyss of the deep ocean. This phenomenon is a very active area for both experimentalists and theoreticians because of its strong implications for the understanding of the world ocean circulation and Earth climate. This major theme sheds light on specific and complex processes happening in very restricted areas still controlling three quarters of the total volume of the ocean. All articles include illustrations and a bibliography. This book will be of particular interest to physical oceanographers, earth scientists, environmentalists and climatologists.

Introduction (J.C. Gascard, C.A. Collins). Geophysics of Deep Convection and Deep Water Formation in Oceans (P.C. Chu). Two Stable Modes of Southern Ocean Winter Stratification (A.L. Gordon). Open Ocean Convection in the Southern Ocean (D.G. Martinson). Relict Convective Features in the Weddell Sea (R.D. Muench). Forced Convection in the Upper Ocean Near Fram Strait in Later Winter (M.G. McPhee). Eddy-Related Winter Convection in the Boreas Basin (O.M. Johannessen, S. Sandven, J.A. Johannessen). Upper Ocean Structures in the South-Western Iceland Sea: A Preliminary Report (J.C. Scott, P.D. Killworth). An Approach to Brine and Freshwater Fluxes Interpreted from Radar and Microwave Radiometer Data (F.D. Carsey). Formation of Baffin Bay Bottom and Deep Waters (R.H. Bourke, R.G. Paquette). Open Ocean Convection and Deep Water Formation Revisited in the Mediterranean, Labrador, Greenland, and Weddell Seas (J.C. Gascard). Equatorward Currents in Temperatures 1.8 - 6.0 °C on the Continental Slope in the Mid-Atlantic Bight (D.R. Watts). Enhancements to Deep Turbulent Entrainment (R.W. Garwood, Jr.). Convection in Lake Baikal: An Example of Thermobaric Instability (E.C. Carmack, R.F. Weiss). The Northern Adriatic Sea as a Prototype of Convection and Water Mass Formation on the Continental Shelf (P. Malanotte-Rizzoli). Thermohaline-Driven Deep Water Formation in the Northwestern Mediterranean Sea (G. Madec, M. Crepon). Vertical Cells Driven by Vortices: A Possible Mechanism for the Preconditioning of Open-Ocean Deep Convection (P.C. Chu). Modeling the Geostrophic Adjustment and Spreading of Waters Formed by Deep Convection (A.J. Hermann, W.B. Owens). A Buoyancy-Driven Thermocline Model (W.K. Dewar). Non-Hydrostatic Ocean Modelling for Studies of Open-Ocean Deep Convection (R. Brugge, H.L. Jones, J.C. Marshall). Convection in the Labrador Sea: Community Modelling Effort (CME) Results (E.D. Skyllingstad, D.W. Denbo, J. Downing). Small and Mesoscale Convection as Observed in the Laboratory (J.A. Whitehead). Meteorological Triggers for Deep Convection in the Greenland Sea (P.S. Guest, K.L. Davidson). Some Early Results of the Humidity Exchange over the Sea Main Experiment (S.D. Smith).