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Author : Peter Müller
Publisher :
ISBN 13 :
Total Pages : 370 pages
Book Rating : 4.:/5 (318 download)
Download or read book Internal Gravity Waves and Small-scale Turbulence written by Peter Müller and published by . This book was released on 1984 with total page 370 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : P. Muller
Publisher :
ISBN 13 :
Total Pages : 310 pages
Book Rating : 4.:/5 (227 download)
Download or read book Internal Gravity Waves and Small-Scale Turbulence: Proceedings of 'Aha Huliko'a Hawaiian Winter Workshop (2nd) Held at Manoa on January 17-20, 1984 written by P. Muller and published by . This book was released on 1984 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt: Contents: Oceanic Shear Spectra from a Submarine; Towed Observations of Internal Waves and Patches of Fine-Scale Turbulence; The Transition from Kelvin-Helmholtz Instability to Turbulence; Internal Waves and Mixing in the Ocean: Observations and Speculations; Richardson Number Approach to Internal Wave Instability in the Ocean and Stratosphere; Recent Observations of Near-Inertial Frequency Internal Waves; The Wavenumber Frequency Spectrum of the Internal Wavefield; The Monthly Variability of the Upper-Ocean Internal Wave Energy: A Progress Report on the Correspondence with Wind Stress; Internal Wave Climatology: An Update; Estimates of Cross-Isopycnal Diffusivities from Climatological Hydrographic Data; Parameterizing the Effects of Internal Waves: Simple Ideas and Things We Need to Know; How Much Internal Wave Energy is Redistributed or Lost Through Bottom Reflection; Interaction of Internal Waves of Near-Inertial Frequencies; Transport of Small-Scale Internal Waves Toward Microstructure; Probing the Internal Wave Strong Interaction Regime by Numerical Experimentation; Small-Scale Vortical Motions; Stability of Inviscid Stratified Flows Under Nonlinear Perturbations; Closure for Turbulent Velocity/Pressure-Gradient Correlations in Nonuniform Flows; The Atmospheric Noise Spectrum-Waves or Stratified Turbulence?; New Directions in Internal Wave and Microstructure Research (reprinted from EOS).
Author : Bruce Sutherland
Publisher : Cambridge University Press
ISBN 13 : 0521839157
Total Pages : 395 pages
Book Rating : 4.5/5 (218 download)
Download or read book Internal Gravity Waves written by Bruce Sutherland and published by Cambridge University Press. This book was released on 2010-09-02 with total page 395 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first comprehensive treatment of the theory for small and large amplitude internal gravity waves, with illustrative examples and exercises.
Author : Peter Muller
Publisher :
ISBN 13 :
Total Pages : 299 pages
Book Rating : 4.:/5 (636 download)
Download or read book Internal Gravity Waves and Small-scale Turbulence written by Peter Muller and published by . This book was released on 1984 with total page 299 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : J.C.J. Nihoul
Publisher : Elsevier
ISBN 13 : 008087066X
Total Pages : 391 pages
Book Rating : 4.0/5 (88 download)
Download or read book Marine Turbulence written by J.C.J. Nihoul and published by Elsevier. This book was released on 1980-01-01 with total page 391 pages. Available in PDF, EPUB and Kindle. Book excerpt: Marine Turbulence
Author : J.C.J. Nihoul
Publisher : Elsevier
ISBN 13 : 0080870848
Total Pages : 557 pages
Book Rating : 4.0/5 (88 download)
Download or read book Small-Scale Turbulence and Mixing in the Ocean written by J.C.J. Nihoul and published by Elsevier. This book was released on 1988-05-01 with total page 557 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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 : Ammar Mohammed Abdilghanie
Publisher :
ISBN 13 :
Total Pages : 198 pages
Book Rating : 4.:/5 (798 download)
Download or read book A Numerical Investigation of Turbulence-driven and Forced Generation of Internal Gravity Waves in Stratified Mid-water written by Ammar Mohammed Abdilghanie and published by . This book was released on 2011 with total page 198 pages. Available in PDF, EPUB and Kindle. Book excerpt: Natural and externally-forced excitation of internal gravity waves in a uniformly stratified fluid have been thoroughly investigated by means of highly resolved large eddy simulations. The first part of the thesis focuses on the generation of high frequency internal gravity waves by the turbulent wake of a towed sphere in a uniformly stratified fluid. We have used continuous wavelet transforms to quantify relevant wavelength and frequencies and their spatial and temporal dependence in the near field of the wake. The dependence on Reynolds number and Froude number of the internal wave field wavelengths, frequencies and isopycnal displacements are reported for the first time. The initial wavelengths and decay rates show a dependence on both parameters that can not be explained on the basis of impulsive mass source models. The results also clearly identify Reynolds number as the main driver for the observed selection of a narrow range of wave phase- line-tilt-angles and shed some light on the coupling of the waves and turbulent wake region at high Reynolds number. Finally, the potential for nonlinear interactions, instability and breaking of the waves increases with both Reynolds and Froude numbers. The results of this part of the thesis motivate future theoretical investigations into the underlying generation mechanisms and improved parametrization of the role of small scale processes, such as high frequency internal gravity waves, in large scale circulation models in the ocean and atmosphere. In the second half of the thesis, we have focused on the generation of an internal gravity wavepacket by a vertically localized transient forcing. We have found that the unique combination of strong vertical localization and large wave amplitude, typically not considered in the literature, lead to the formation of strong horizontal mean flow inside the wave forcing region that nonlinearly grows at the expense of a depleted and structurally modified emerging internal wave packet. A novel theoretical analysis is developed which can explain the underlying mechanism for the formation of the mean flow. By appealing to scaling arguments, based on a one way wave-mean flow interaction, we quantify the mean flow dependence on the input parameters. By means of a phase averaging procedure, we offer additional insight on mean flow reduction through horizontal localization of a wavepacket. Finally, mean flow containment techniques that allow the generation of a well-defined wavepacket that preserves its structure near the source and during the propagation towards a remote interaction region are proposed and tested. The efficiency of the techniques is tested in a simulation of internal gravity wave-shear flow interaction near a critical level. The simulations qualitatively agree with previous numerical investigations of such flow.
Author : Jo Roberts
Publisher :
ISBN 13 :
Total Pages : 296 pages
Book Rating : 4.:/5 (318 download)
Download or read book Internal Gravity Waves in the Ocean written by Jo Roberts and published by . This book was released on 1975 with total page 296 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Dirk Olbers
Publisher : Springer Science & Business Media
ISBN 13 : 364223450X
Total Pages : 717 pages
Book Rating : 4.6/5 (422 download)
Download or read book Ocean Dynamics written by Dirk Olbers and published by Springer Science & Business Media. This book was released on 2012-04-27 with total page 717 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ocean Dynamics’ is a concise introduction to the fundamentals of fluid mechanics, non-equilibrium thermodynamics and the common approximations for geophysical fluid dynamics, presenting a comprehensive approach to large-scale ocean circulation theory. The book is written on the physical and mathematical level of graduate students in theoretical courses of physical oceanography, meteorology and environmental physics. An extensive bibliography and index, extensive side notes and recommendations for further reading, and a comparison with the specific atmospheric physics where applicable, makes this volume also a useful reading for researchers. Each of the four parts of the book – fundamental laws, common approximations, ocean waves, oceanic turbulence and eddies, and selected aspects of ocean dynamics – starts with elementary considerations, blending then classical topics with more advanced developments of fluid mechanics and theoretical oceanography. The last part covers the theory of the global wind-driven circulation in homogeneous and stratified regimes, the circulation and overturning in the Southern Ocean, and the global meridional overturning and thermohaline-driven circulation. Emphasis is placed on simple physical models rather than access to extensive numerical results, enabling students to understand and reproduce the complex theory mostly by analytical means. All equations and models are derived in detail and illustrated by numerous figures. The appendix provides short excursions into the mathematical background, such as vector analysis, statistics, and differential equations
Author : Vamsi Krishna Chalamalla
Publisher :
ISBN 13 :
Total Pages : 155 pages
Book Rating : 4.:/5 (933 download)
Download or read book Instabilities, Turbulence and Mixing from Internal Waves at Bottom Topography written by Vamsi Krishna Chalamalla and published by . This book was released on 2015 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study of nonlinear processes and turbulence associated with internal gravity waves has three phases. In the first phase, the reflection problem is studied with simulations involving laboratory-scale slopes whose inclination varies between critical (resonant case with slope angle equal to wave propagation angle) and somewhat off-critical values. We start with three-dimensional direct numerical simulation (DNS) and find strong nonlinearity in the response if the off-criticality is not too large: harmonics in the radiated wave field and cyclical near-bottom turbulence. Subharmonic frequencies are found slightly away from the interaction region in some cases, prompting a followup study with two-dimensional simulations where the underlying mechanism is identified as parametric subharmonic instability (PSI) of the reflected wave beam: the sum of the frequencies and the sum of the wave numbers of the daughter subharmonic waves equal the corresponding quantities for the reflected wave. This is the first demonstration that the reflected wave formed when a small-amplitude linear wave is incident on a slope becomes sufficiently nonlinear so as to suffer PSI. In the second phase, DNS and large eddy simulation (LES) are employed to study the turbulent dissipation and mixing brought about by convective overturns in a stratified, oscillatory bottom layer underneath internal waves. The phasing of turbulence, the onset and breakdown of convective overturns, and the pathway to irreversible mixing are quantified. $L_T$ decreases during the convective instability while $L_O$ increases, which implies that $L_T$ is not linearly related to $L_O$. Thus, the instantaneous Thorpe-inferred dissipation rates are quite different from the actual values. However, the ratio of their cycle-averaged values is found to be O(1). In the third phase, a novel modeling technique called SOMAR-LES has been developed wherein a three-dimensional, body-conforming Large Eddy Simulation (LES) model that resolves turbulence scales is coupled with the large-sale Stratified Ocean Model with Adaptive Refinement (SOMAR) to accurately represent small scale turbulence as well as its effect on flow evolution at large scale. Numerical simulations are performed with coupled SOMAR-LES to examine the flow at model Kaena ridge, a steep supercritical generation site.
Author : Lakshmi H. Kantha
Publisher : Elsevier
ISBN 13 : 0080517293
Total Pages : 921 pages
Book Rating : 4.0/5 (85 download)
Download or read book Small Scale Processes in Geophysical Fluid Flows written by Lakshmi H. Kantha and published by Elsevier. This book was released on 2000-08-07 with total page 921 pages. Available in PDF, EPUB and Kindle. Book excerpt: While ocean waves are the most visible example of oceanic mixing processes, this macroscale mixing process represents but one end of the spectrum of mixing processes operating in the ocean. At the scale of a typical phytoplanktoic diatom or larval fish inhabiting these seas, the most important mixing processes occur on the molecular scale - at the scale of turbulence. Physical-biological interactions at this scale are of paramount importance to the productivity of the seas (fisheries) and the heat balance that controls large scale ocean climate phenomena such as El Niño and tornadoes. This book grew out of the need for a comprehensive treatment of the diverse elements of geophysical fluid flow at the microscale. Kantha and Clayson have arranged a logial exposition of the various mixing processes operating within and between the oceans and its boundaries with the atmosphere and ocean floor. The authors' intent is to develop a volume that would provide a comprehensive treatment of the fundamental elements of ocean mixing so that students, academics, and professional fluid dynamicists and oceanographers can access this essential information from one source. This volume will serve as both a valuable reference tool for mathematically inclined limnologists, oceanographers and fluid modelers. * Simple models of oceanic and atmospheric boundary layers are discussed* Comprehensive and up-to-date review* Useful for graduate level course* Essential for modeling the oceans and the atmosphere* Color Plates
Author : Yu.Z. Miropol'sky
Publisher : Springer Science & Business Media
ISBN 13 : 9401713251
Total Pages : 413 pages
Book Rating : 4.4/5 (17 download)
Download or read book Dynamics of Internal Gravity Waves in the Ocean written by Yu.Z. Miropol'sky and published by Springer Science & Business Media. This book was released on 2013-03-09 with total page 413 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph creates a systematic interpretation of the theoretical and the most actual experimental aspects of the internal wave dynamics in the ocean. Firstly, it draws attention to the important physical effects from an oceanographical point of view which are presented in mathematical descriptions. Secondly, the book serves as an introduction to the range of modern ideas and the methods in the study of wave processes in dispersive media. The book is meant for specialists in physics of the ocean, oceanography, geophysics, hydroacoustics.
Author : Sergey Nazarenko
Publisher : Springer Science & Business Media
ISBN 13 : 3642159419
Total Pages : 287 pages
Book Rating : 4.6/5 (421 download)
Download or read book Wave Turbulence written by Sergey Nazarenko and published by Springer Science & Business Media. This book was released on 2011-02-12 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wave Turbulence refers to the statistical theory of weakly nonlinear dispersive waves. There is a wide and growing spectrum of physical applications, ranging from sea waves, to plasma waves, to superfluid turbulence, to nonlinear optics and Bose-Einstein condensates. Beyond the fundamentals the book thus also covers new developments such as the interaction of random waves with coherent structures (vortices, solitons, wave breaks), inverse cascades leading to condensation and the transitions between weak and strong turbulence, turbulence intermittency as well as finite system size effects, such as “frozen” turbulence, discrete wave resonances and avalanche-type energy cascades. This book is an outgrow of several lectures courses held by the author and, as a result, written and structured rather as a graduate text than a monograph, with many exercises and solutions offered along the way. The present compact description primarily addresses students and non-specialist researchers wishing to enter and work in this field.
Author : Mangalathayil Ali Abdu
Publisher : Springer Science & Business Media
ISBN 13 : 9400703260
Total Pages : 479 pages
Book Rating : 4.4/5 (7 download)
Download or read book Aeronomy of the Earth's Atmosphere and Ionosphere written by Mangalathayil Ali Abdu and published by Springer Science & Business Media. This book was released on 2011-02-26 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is a multi-author treatise on the most outstanding research problems in the field of the aeronomy of the Earth’s atmosphere and ionosphere, encompassing the science covered by Division II of the International Association of Geomagnetism and Aeronomy (IAGA). It contains several review articles and detailed papers by leading scientists in the field. The book is organized in five parts: 1) Mesosphere-Lower Thermosphere Dynamics and Chemistry; 2) Vertical Coupling by Upward Propagating Waves; 3) Ionospheric Electrodynamics and Structuring; 4) Thermosphere- Ionosphere Coupling, Dynamics and Trends and 5) Ionosphere-Thermosphere Disturbances and Modeling. The book consolidates the progress achieved in the field in recent years and it serves as a useful reference for graduate students as well as experienced researchers.
Author : B. R. Sutherland
Publisher :
ISBN 13 : 9781316183601
Total Pages : 377 pages
Book Rating : 4.1/5 (836 download)
Download or read book Internal Gravity Waves written by B. R. Sutherland and published by . This book was released on 2010 with total page 377 pages. Available in PDF, EPUB and Kindle. Book excerpt: The study of internal gravity waves provides many challenges: they move along interfaces as well as in fully three-dimensional space, at relatively fast temporal and small spatial scales, making them difficult to observe and resolve in weather and climate models. Solving the equations describing their evolution poses various mathematical challenges associated with singular boundary value problems and large amplitude dynamics. This book provides the first comprehensive treatment of the theory for small and large amplitude internal gravity waves. Over 120 schematics, numerical simulations and laboratory images illustrate the theory and mathematical techniques, and 130 exercises enable the reader to apply their understanding of the theory. This is an invaluable single resource for academic researchers and graduate students studying the motion of waves within the atmosphere and ocean, and also mathematicians, physicists and engineers interested in the properties of propagating, growing and breaking waves.
Author :
Publisher :
ISBN 13 :
Total Pages : 552 pages
Book Rating : 4.:/5 (318 download)
Download or read book Dynamics of Oceanic Internal Gravity Waves written by and published by . This book was released on 1991 with total page 552 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : P.H. LeBlond
Publisher : Elsevier
ISBN 13 : 0080879772
Total Pages : 617 pages
Book Rating : 4.0/5 (88 download)
Download or read book Waves in the Ocean written by P.H. LeBlond and published by Elsevier. This book was released on 1981-01-01 with total page 617 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is a book which will be welcomed not only by researchers and engineers, but also by teachers and students, as it contains the only comprehensive review of the dynamics of ocean waves. Existing books are now either out of date or restricted to specialized aspects of the subject, whereas this book covers all types of ocean waves, ranging from capillary to planetary waves. Because of its completeness of coverage, its use of elementary mathematics and the provision of numerous problems and exercises, the book will be an indispensable text for everyone. It is completed by a very lengthy bibliography which includes many references to the Russian literature.
