Read Books Online and Download eBooks, EPub, PDF, Mobi, Kindle, Text Full Free.
Download Acoustic Measurements Of Air Entrainment By Breaking Waves full books in PDF, epub, and Kindle. Read online Acoustic Measurements Of Air Entrainment By Breaking Waves ebook anywhere anytime directly on your device. Fast Download speed and no annoying ads. We cannot guarantee that every ebooks is available!
Author : Eric James Terrill
Publisher :
ISBN 13 :
Total Pages : 548 pages
Book Rating : 4.:/5 (318 download)
Download or read book Acoustic Measurements of Air Entrainment by Breaking Waves written by Eric James Terrill and published by . This book was released on 1998 with total page 548 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Eric Lamarre
Publisher :
ISBN 13 :
Total Pages : 327 pages
Book Rating : 4.:/5 (287 download)
Download or read book An Experimental Study of Air Entrainment by Breaking Waves written by Eric Lamarre and published by . This book was released on 1993 with total page 327 pages. Available in PDF, EPUB and Kindle. Book excerpt: Breaking waves charge the surface layer of the ocean with small air bubbles which play an important role in air-sea gas transfer and in underwater acoustics near the ocean surface. This work reports on a series of laboratory and field experiments on the measurement on air entrainment by breaking waves. The first part of this thesis addresses the measurement of high volumetric concentrations of air (0.3% to 100% void-fraction) found immediately beneath breaking waves. Instrumentation based on the change of electrical impedance of the bubbly mixture with change in void-fraction is developed. Laboratory measurements are conducted in a wave channel and in a large three-dimensional wave basin. Maps of the evolution of the void-fraction distribution in bubble plumes generated by various size breaking waves are presented. Moments of the void-fraction field are shown to scale with the initially enclosed air volume at breaking and the energy dissipated by breaking. A significant fraction (30 to 50%) of the energy dissipated by breaking is found to be expanded in entraining bubbles against their buoyancy. The results reveal that the bubble plumes experience rapid transformations within the first wave period after the onset of breaking. In particular, the plumes loose 95% of the initially entrained air volume during the fust wave period. Predictions of the low-frequency resonant oscillations of the bubble plumes from measurements of the void-fraction compare well with acoustic measurements. Measurements near the ocean surface show high void-fractions up to 24% immediately beneath breaking waves. These are several orders of magnitude greater than previously reported time-averaged measurements. The second part addresses the measurement of very low void-fractions. Instrumentation based on the propagation velocity of low-frequency acoustic pulses is developed. Simultaneous measurements of the sound-speed (and thus the void-fraction) at several depths are conducted during two field experiments. Time-series of sound-speed and attenuation show dramatic fluctuations over time periods on the order of minutes or less. These are attributed to the formation of bubble plumes or passage of bubble clouds. Frequent occurences of sound-speed anomalies greater than 1 OOrnls and attenuation greater than 30dB/m are observed for moderate wind conditions (8m/s). The signals at various depths are highly correlated and mostly coherent at frequencies below 0.05Hz. The time-averaged (20min) sound-speed profile is found to be significantly more pronounced and shallower than previously reported. Simultaneous measurements at several acoustic frequencies show that the sound-speed is non-dispersive below 20kHz for moderate wind conditions. Bubble size distributions are inferred from the soundspeed and attenuation measurements.
Author : Michael L. Banner
Publisher : Springer Science & Business Media
ISBN 13 : 3642848478
Total Pages : 375 pages
Book Rating : 4.6/5 (428 download)
Download or read book Breaking Waves written by Michael L. Banner and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 375 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wave breaking is a commonly occurring phenomena associated with wave motion in fluids, often inducing significant effects which are of fundamental and technological importance, A familiar illustration is provided with white-capping and microbreaking of the wind-driven ocean sUrface waves, which is believed to play an important part in the transfers of momentum, mass and heat across the air-sea interface, as well as in the production of underwater ambient noise and augmented microwave backscatter. The enhanced hydrodynamic forces associated with the breaking of the more energetic ocean wave components constitute a significant challenge in ocean engineering, coastal engineering and naval architecture. Other less conspicuous but equally important manifestations are the breaking of internal waves and the fila mentation of vorticity interfaces. Despite recent theoretical and observational progress towards a more complete understanding of wave breaking, mathematical descriptions of its onset and consequences are presently lacking. The aim of this Symposium was to bring together theoretical and observational expertise, with the goal of determining the current state of knowledge of wave breaking and providing a stimulus to future research. The Symposium focused on water waves of all scales from capillary waves to ocean swell, but also considered internal waves and the filamentation of vorticity interfaces. Specific topics included were: Fundamental theoretical studies; wave instabilities; routes to breaking. Models of wave breaking. Field observations, including statistical information. Laboratory studies. Shoaling waves, breaking waves on currents, breaking induced by the motion of a ship.
Author : Mark Richard Loewen
Publisher :
ISBN 13 :
Total Pages : 432 pages
Book Rating : 4.:/5 (318 download)
Download or read book Laboratory Measurements of the Sound Generated by Breaking Waves written by Mark Richard Loewen and published by . This book was released on 1992 with total page 432 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : B.R. Kerman
Publisher : Springer Science & Business Media
ISBN 13 : 9401116261
Total Pages : 750 pages
Book Rating : 4.4/5 (11 download)
Download or read book Natural Physical Sources of Underwater Sound written by B.R. Kerman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 750 pages. Available in PDF, EPUB and Kindle. Book excerpt: To place this book in perspective it is useful for the reader to be aware of the recent history of the topic of underwater sound generation at the ocean surface by natural mechanisms. A meeting in Lerici, Italy in 1987 was convened within the NATO Advanced Research Workshop series, to bring together underwater acousticians and ocean hydrodynamicists to examine various mechanisms which generate sound naturally at the ocean surface. A record of that meeting was published in the NATO scientific publication series in 1988 under the title 'Sea Surface Sound'. That meeting was successful in inspiring and co ordinating both participants and non-attending colleagues to examine some key issues which were raised during the course of presentations and discussions. The understanding among those present was that another meeting should be convened 3 years hence to report and review progress in the subject. Accordingly the second conference was convened in Cambridge in 1990, whose proceedings are presented here. This volume represents a very gratifying increase in only a 3 year interval in our understanding of a number of physical processes which generate sound at the peripheries of oceans. In fact it represents both the acceleration of singular effort as well as the development of interdisciplinary sophistication and co-operation. The enthusiasm, goodwill, and intense scientific curiosity which characterized the Lerici meeting carried through to Cambridge. The collegial atmosphere established by the participants was perfectly timed to foster another major advance in studies of ocean surface sound.
Author : National Research Council
Publisher : National Academies Press
ISBN 13 : 0309057426
Total Pages : 49 pages
Book Rating : 4.3/5 (9 download)
Download or read book Boundary Layer Dynamics written by National Research Council and published by National Academies Press. This book was released on 1997-04-24 with total page 49 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Michael J Buckingham
Publisher : World Scientific
ISBN 13 : 981453188X
Total Pages : 512 pages
Book Rating : 4.8/5 (145 download)
Download or read book Sea Surface Sound '94 - Proceedings Of The Iii International Meeting On Natural Physical Processes Related To Sea Surface Sound written by Michael J Buckingham and published by World Scientific. This book was released on 1996-01-11 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding and constructively using natural sound in the ocean has become of prime importance with the shift of emphasis to protecting the environment and exercising responsible global resource management which has followed the end of the Cold War. Especially now that we realise that marine mammals and other inhabitants of the oceans are threatened by our acoustic pollution of their environment, the use of natural sound as a non-intrusive remote sensing probe has become particularly germane. This was the first meeting on the subject since the fall of Soviet-Western barriers, and the proceedings include significant work from premier researchers in the former Soviet Union. It was also the first meeting which specifically addressed the new and exciting idea of using natural sound in applications for monitoring the marine environment. The proceedings include a number of papers on various aspects of this topic. Further new work on the basic physics of sound production and propagation is also included. This volume includes leading-edge work from the foremost researchers in the field, including Bill Carey, Lawrence Crum, Nikolai Dubrovskii, David Farmer, Brian Kerman, Bill Kuperman, Michael Longuet-Higgins, Hank Medwin, Ken Melville, A Prosperetti and many others.
Author : Stanislaw R. Massel
Publisher : Springer Science & Business Media
ISBN 13 : 0387690921
Total Pages : 332 pages
Book Rating : 4.3/5 (876 download)
Download or read book Ocean Waves Breaking and Marine Aerosol Fluxes written by Stanislaw R. Massel and published by Springer Science & Business Media. This book was released on 2007-10-10 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book fills a gap in knowledge of breaking waves and their influence on the generation of marine fluxes from ocean surfaces. Based on published data as well as on the author's experience, the text explores in detail the relationship chain of breaking waves, whitecaps coverage, rate of wave energy dissipation, amount of aerosol fluxes rising from a given sea basin, and possible seasonal variations.
Author : Alexander Babanin
Publisher : Cambridge University Press
ISBN 13 : 1139502727
Total Pages : 479 pages
Book Rating : 4.1/5 (395 download)
Download or read book Breaking and Dissipation of Ocean Surface Waves written by Alexander Babanin and published by Cambridge University Press. This book was released on 2011-05-19 with total page 479 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wave breaking represents one of the most interesting and challenging problems for fluid mechanics and physical oceanography. Over the last fifteen years our understanding has undergone a dramatic leap forward, and wave breaking has emerged as a process whose physics is clarified and quantified. Ocean wave breaking plays the primary role in the air-sea exchange of momentum, mass and heat, and it is of significant importance for ocean remote sensing, coastal and ocean engineering, navigation and other practical applications. This book outlines the state of the art in our understanding of wave breaking and presents the main outstanding problems. It is a valuable resource for anyone interested in this topic, including researchers, modellers, forecasters, engineers and graduate students in physical oceanography, meteorology and ocean engineering.
Author :
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (742 download)
Download or read book Acoustic Properties of Bubble Plumes written by and published by . This book was released on 2000 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: The scientific goal of this work was to better understand the process of air entrainment by breaking waves and its influence on the sound speed field in the surface layers of the ocean. The program had two principal components: (a) The development and deployment of an autonomous sound speed profiling buoy, its deployment, and the analysis of the collected data. (b) The development of models for the evolution of the bubble size distribution. The initial development of the program focused on participation in the Acoustic Surface Reverberation Experiment (ASREX) in the N. Atlantic in the winter of 1993-94. Other components of the program included the analysis of ambient sound and environmental data collected during SWADE and NOBS, and the completion of doctoral thesis research and publications at MIT.
Author : Young C Kim
Publisher : World Scientific
ISBN 13 : 9813204036
Total Pages : 1775 pages
Book Rating : 4.8/5 (132 download)
Download or read book Handbook Of Coastal And Ocean Engineering (Expanded Edition) (In 2 Volumes) written by Young C Kim and published by World Scientific. This book was released on 2017-12-21 with total page 1775 pages. Available in PDF, EPUB and Kindle. Book excerpt: The handbook contains a comprehensive compilation of topics that are at the forefront of many of the technical advances in ocean waves, coastal, and ocean engineering. More than 110 internationally recognized authorities in the field of coastal and ocean engineering have contributed articles in their areas of expertise to this handbook. These international luminaries are from highly respected universities and renowned research and consulting organizations around the world.
Author : Jane Mckee Smith
Publisher : World Scientific
ISBN 13 : 9814467561
Total Pages : 5136 pages
Book Rating : 4.8/5 (144 download)
Download or read book Coastal Engineering 2008 (In 5 Volumes) - Proceedings Of The 31st International Conference written by Jane Mckee Smith and published by World Scientific. This book was released on 2009-05-05 with total page 5136 pages. Available in PDF, EPUB and Kindle. Book excerpt: This proceedings contains papers presented at the 31st International Conference on Coastal Engineering, which has held in Hamburg, Germany (31 August - 5 September 2008). The proceeding is divided into five parts: Waves; Long Waves, Nearshore Currents, and Swash; Sediment Transport and Morphology; Coastal Management, Environment, and Risk; and Coastal Structures. The papers cover a broad range of topics including theory, numerical and physical modeling, field measurements, case studies, design, and management. Coastal Engineering 2008 provides coastal engineers, scientists, and planners, with state-of-the-art information on coastal engineering and coastal processes.
Author : Michele Mossa
Publisher : CRC Press
ISBN 13 : 1482259893
Total Pages : 247 pages
Book Rating : 4.4/5 (822 download)
Download or read book Fluvial, Environmental and Coastal Developments in Hydraulic Engineering written by Michele Mossa and published by CRC Press. This book was released on 2004-12-05 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: Comprising the Proceedings of the International Workshop on State-of-the-Art Hydraulic Engineering held in Bari, Italy on 16-19 February 2004, this volume presents an in-depth investigation of the energy loss of skimming flows under a range of discharges, step and dam heights, and channel slopes. Including a wealth of information, the volume is div
Author :
Publisher : Academic Press
ISBN 13 : 0128130822
Total Pages : 4318 pages
Book Rating : 4.1/5 (281 download)
Download or read book Encyclopedia of Ocean Sciences written by and published by Academic Press. This book was released on 2019-04-12 with total page 4318 pages. Available in PDF, EPUB and Kindle. Book excerpt: The oceans cover 70% of the Earth’s surface, and are critical components of Earth’s climate system. This new edition of Encyclopedia of Ocean Sciences, Six Volume Set summarizes the breadth of knowledge about them, providing revised, up to date entries as well coverage of new topics in the field. New and expanded sections include microbial ecology, high latitude systems and the cryosphere, climate and climate change, hydrothermal and cold seep systems. The structure of the work provides a modern presentation of the field, reflecting the input and different perspective of chemical, physical and biological oceanography, the specialized area of expertise of each of the three Editors-in-Chief. In this framework maximum attention has been devoted to making this an organic and unified reference. Represents a one-stop. organic information resource on the breadth of ocean science research Reflects the input and different perspective of chemical, physical and biological oceanography, the specialized area of expertise of each of the three Editors-in-Chief New and expanded sections include microbial ecology, high latitude systems and climate change Provides scientifically reliable information at a foundational level, making this work a resource for students as well as active researches
Author : Trevor A. McIntyre
Publisher :
ISBN 13 :
Total Pages : 122 pages
Book Rating : 4.:/5 (318 download)
Download or read book Ultrasonic Acoustic Characteristics of Air Bubbles in the Surf Zone written by Trevor A. McIntyre and published by . This book was released on 1995 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: Understanding the movement of sediment in the nearshore region due to wave motion and longshore currents is important in beach erosion studies, and has tactical significance in beach front mine warfare. In the surf zone, an bubbles and sediment are both suspended within the water column. At the Naval Postgraduate School in Monterey, California, a sediment flux probe has been developed to study small scale processes. Using ultrasonic acoustic backscatter, the Coherent Acoustic Sediment Flux Probe (CASP) is capable of tracking the movement of scatterers within the surf zone. As it is important that the CASP system is capable of distinguishing between sediment and entrained air bubbles, laboratory experiments were run to determine the ultrasonic acoustic backscatter characteristics of surf zone bubbles. Bulk void fraction and optical sizing methods were explored to develop a means of measuring bubble populations produced in the laboratory for calibration of the backscattered energy received by the CASP system in the presence of bubbles.
Author : Carlo Gualtieri
Publisher : CRC Press
ISBN 13 : 0203895355
Total Pages : 349 pages
Book Rating : 4.2/5 (38 download)
Download or read book Fluid Mechanics of Environmental Interfaces written by Carlo Gualtieri and published by CRC Press. This book was released on 2008-02-07 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: An environmental interface is defined as a surface between two abiotic or biotic systems, in relative motion and exchanging mass, heat and momentum through biophysical and/or chemical processes. These processes fluctuate temporally and spatially. The book first treats exchange processes occurring at the interfaces between atmosphere and the surface
Author : Herman Medwin
Publisher : Cambridge University Press
ISBN 13 : 9780521829502
Total Pages : 682 pages
Book Rating : 4.8/5 (295 download)
Download or read book Sounds in the Sea written by Herman Medwin and published by Cambridge University Press. This book was released on 2005-07-21 with total page 682 pages. Available in PDF, EPUB and Kindle. Book excerpt: Publisher Description
