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Author: Peter Mueller
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
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Book Description
Over fifty years ago, Carl Eckart described the sequence of processes as a passive scalar is stirred and mixed in a turbulent flow (Eckart, 1948). At first, during the stirring phase, the variance of the scalar gradient is greatly increased, but later, during the mixing phase, the gradients become sufficiently sharp that molecular diffusion becomes important and the gradient variance rapidly decreases. The process is of great practical importance in many engineering situations as well as being familiar from adding cream to coffee. The interplay of stirring and mixing is also important in the ocean for temperature, salinity, chlorophyll and other naturally occurring tracers as well as for introduced material. The situation is complicated by the numerous physical processes that can cause stirring and by the interplay of processes that act along isopycnals (surfaces of constant mean density, where mean requires careful definition) with "diapycnal" processes acting across the density surfaces.
Author: Peter Mueller
Publisher:
ISBN:
Category :
Languages : en
Pages : 8
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Book Description
Over fifty years ago, Carl Eckart described the sequence of processes as a passive scalar is stirred and mixed in a turbulent flow (Eckart, 1948). At first, during the stirring phase, the variance of the scalar gradient is greatly increased, but later, during the mixing phase, the gradients become sufficiently sharp that molecular diffusion becomes important and the gradient variance rapidly decreases. The process is of great practical importance in many engineering situations as well as being familiar from adding cream to coffee. The interplay of stirring and mixing is also important in the ocean for temperature, salinity, chlorophyll and other naturally occurring tracers as well as for introduced material. The situation is complicated by the numerous physical processes that can cause stirring and by the interplay of processes that act along isopycnals (surfaces of constant mean density, where mean requires careful definition) with "diapycnal" processes acting across the density surfaces.
Author: Eric P. Chassignet
Publisher: Springer Science & Business Media
ISBN: 1402040288
Category : Science
Languages : en
Pages : 573
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Book Description
This volume covers a wide range of topics and summarizes our present knowledge in ocean modeling, ocean observing systems, and data assimilation. The Global Ocean Data Assimilation Experiment (GODAE) provides a framework for these efforts: a global system of observations, communications, modeling, and assimilation that will deliver regular, comprehensive information on the state of the oceans, engendering wide utility and availability for maximum benefit to the community.
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1040
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Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Author: G. Beutler
Publisher: Springer Science & Business Media
ISBN: 9401713332
Category : Science
Languages : en
Pages : 446
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Book Description
Volume resulting from an ISSI Workshop, 11-15 March 2002, Bern, Switzerland
Author: Akira Ōkubo
Publisher:
ISBN:
Category : Oceanic mixing
Languages : en
Pages : 160
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Book Description
The present knowledge of oceanic mixing is summarized. Two processes, 'advection' and 'diffusion, ' which contribute substantially to oceanic mixing and their interaction are recognized in the mechanism of mixing. Environmental features of the sea in relation to advective and diffusive processes are also described. (Author).
Author:
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ISBN:
Category : Continental shelf
Languages : en
Pages : 664
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Book Description
Author: Michael Meredith
Publisher: Elsevier
ISBN: 0128215135
Category : Science
Languages : en
Pages : 386
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Book Description
Ocean Mixing: Drivers, Mechanisms and Impacts presents a broad panorama of one of the most rapidly-developing areas of marine science. It highlights the state-of-the-art concerning knowledge of the causes of ocean mixing, and a perspective on the implications for ocean circulation, climate, biogeochemistry and the marine ecosystem. This edited volume places a particular emphasis on elucidating the key future questions relating to ocean mixing, and emerging ideas and activities to address them, including innovative technology developments and advances in methodology. Ocean Mixing is a key reference for those entering the field, and for those seeking a comprehensive overview of how the key current issues are being addressed and what the priorities for future research are. Each chapter is written by established leaders in ocean mixing research; the volume is thus suitable for those seeking specific detailed information on sub-topics, as well as those seeking a broad synopsis of current understanding. It provides useful ammunition for those pursuing funding for specific future research campaigns, by being an authoritative source concerning key scientific goals in the short, medium and long term. Additionally, the chapters contain bespoke and informative graphics that can be used in teaching and science communication to convey the complex concepts and phenomena in easily accessible ways. Presents a coherent overview of the state-of-the-art research concerning ocean mixing Provides an in-depth discussion of how ocean mixing impacts all scales of the planetary system Includes elucidation of the grand challenges in ocean mixing, and how they might be addressed
Author:
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ISBN:
Category : Marine pollution
Languages : en
Pages : 264
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Book Description
Author: J.C.J. Nihoul
Publisher: Elsevier
ISBN: 0080870848
Category : Science
Languages : en
Pages : 557
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Book Description
This volume contains the proceedings of the 19th International Liège Colloquium on Ocean Hydrodynamics, the programme of which focused on the relationships between small-scale mixing and large-scale features, transports and processes. The presentation of papers on various methods of parameterization of small-scale turbulent mixing for numerical ocean models was particularly encouraged and this resulted in more than a third of the papers presented at the Colloquium dealing in one way or another with the parameterization problems; many of these papers demonstrate the direct results of modelling. These proportions are well reflected in this volume of proceedings and thus emphasize once more the importance of small-scale turbulence research for such vital practical applications as ocean modelling and forecasting.
Author:
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 570
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Book Description
