Marine Turbulence

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Marine Turbulence

Author : Helmut Z. Baumert
ISBN : 0521837898
Genre : Science
File Size : 75.5 MB
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This book gives a comprehensive overview of marine turbulence and mixing for students, scientists, engineers.
Category: Science

Marine Turbulence

Author : J.C.J. Nihoul
ISBN : 008087066X
Genre : Science
File Size : 68.12 MB
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Marine Turbulence
Category: Science

Applied Turbulence Modelling In Marine Waters

Author : Hans Burchard
ISBN : 9783540454199
Genre : Science
File Size : 64.85 MB
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The simulation of turbulent mixing processes in marine waters is one of the most pressing tasks in oceanography. It is rendered difficult by the various complex phenomena occurring in these waters like strong stratification, ex ternal and internal waves, wind generated turbulence, Langmuir circulation etc. The need for simulation methods is especially great in this area because the physical processes cannot be investigated in the laboratory. Tradition ally, empirical bulk type models were used in oceanography, which, however, cannot account for many of the complex physical phenomena occurring. In engineering, statistical turbulence models describing locally the turbulence mixing processes were introduced in the early seventies, such as the k E model which is still one of the most widely used models in Computational Fluid Dy namics. Soon after, turbulence models were applied more and more also in the atmospheric sciences, and here the k kL model of Mellor and Yamada became particularly popular. In oceanography, statistical turbulence mod els were introduced rather late, i. e. in the eighties, and mainly models were taken over from the fields mentioned above, with some adjustments to the problems occurring in marine waters. In the literature on turbulence model applications to oceanography problems controversial findings and claims are reported about the various models, creating also an uncertainty on how well the models work in marine water problems.
Category: Science

Bottom Turbulence

Author :
ISBN : 0080870554
Genre : Science
File Size : 26.35 MB
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Bottom Turbulence
Category: Science

Marine Turbulence

Author : C J. Taeques
ISBN : OCLC:759468838
Genre :
File Size : 23.15 MB
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Category:

Journal Of Marine Research

Author : Albert Eide Parr
ISBN : UCAL:B4205285
Genre : Marine biology
File Size : 61.17 MB
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Category: Marine biology

Operational Oceanography

Author : H.W.A. Behrens
ISBN : 0080538045
Genre : Science
File Size : 35.56 MB
Format : PDF
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GOOS is an international programme for a permanent global framework of observations, modelling and analysis of ocean variables which are needed to support operational services around the world. The EuroGOOS strategy has two streams: the first is to improve the quality of marine information in European home waters, and the second is to collaborate with similar organisations in other continents to create a new global ocean observing and modelling system that will provide the open ocean forecasts needed to achieve the best possible performance by local marine information services everywhere. The EuroGOOS strategy envisages our national agencies making a major contribution to that challenging task of globalizing ocean forecasting. The conference also provided an opportunity to take stock of the state of marine science and technology in Europe relevant to the EuroGOOS strategy, and the state of information services and customer needs.
Category: Science

Initial Settlement Of Marine Invertebrate Larvae

Author : Cheryl Ann Hannan
ISBN : UCSD:31822008863805
Genre : Marine invertebrates
File Size : 49.29 MB
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The hypothesis that planktonic larvae of benthic invertebrates sink through the water like passive particles in turbulent flows near the seabed was tested in the field using several groups of geometrically different sediment trap designs. A priori predictions regarding the rank order that the various traps would collect larvae in the field were dictated from laboratory flume experiments to determine the relative particle collection efficiencies of the traps. The flume flow was seeded with particles having fall velocities similar to those measured, in the laboratory, for nonswimming polychaete larvae. The flume flow speed (of about 10 cm/sec) was within the range of near-bottom current velocities measured during trap collection intervals at the field study site. The passive sinking hypothesis could not be falsified for collections of organisms from three invertebrate phyla (polychaetes, bivalves, and enteropneusts) in seven field experiments. Thus, hydrodynamical processes must be included in any future studies of mechanisms that determine patterns of larval settlement. Other processes that could have produced the results now must be tested against the passive sinking alternative hypothesis. If larvae sink like passive particles in near-bottom flows, as the results of this study suggest, then larvae may initially reach the seafloor at sites where particulates, with fall velocities similar to larvae, initially settle.
Category: Marine invertebrates

Marine Turbulence

Author : Jacques C. J. Nihoul
ISBN : 0444416234
Genre : Oceanography
File Size : 63.83 MB
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Category: Oceanography