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Author: Jose Luis Branco Seabra de Melo
Publisher:
ISBN:
Category : Ocean waves
Languages : en
Pages : 78
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Book Description
Wave spectra calculated using the Parameterized Nonlinear Wave Solution developed by Le Mehaute et al. (1984) are compared with field data acquired at Leadbetter beach, Santa Barbara, California. The parameterized solution satisfies the nonlinear free surface boundary conditions to a specified degree of accuracy and is expressed in terms of a converging truncated Fourier series. The wavenumber, surface profile and wave orbital velocities are determined by the wave height and wave period at the local depth of water. Spectral components are compared between the model results and field data. Good agreement is observed for waves corresponding to Ursell numbers rangers from 25 to 75. For large Ursell numbers (strong nonlinear effects) the parameterized model underestimates the data. Keywords: Nonlinear waves; Shallow water waves; Spectral analysis. (Theses).
Author: Jose Luis Branco Seabra de Melo
Publisher:
ISBN:
Category : Ocean waves
Languages : en
Pages : 78
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Book Description
Wave spectra calculated using the Parameterized Nonlinear Wave Solution developed by Le Mehaute et al. (1984) are compared with field data acquired at Leadbetter beach, Santa Barbara, California. The parameterized solution satisfies the nonlinear free surface boundary conditions to a specified degree of accuracy and is expressed in terms of a converging truncated Fourier series. The wavenumber, surface profile and wave orbital velocities are determined by the wave height and wave period at the local depth of water. Spectral components are compared between the model results and field data. Good agreement is observed for waves corresponding to Ursell numbers rangers from 25 to 75. For large Ursell numbers (strong nonlinear effects) the parameterized model underestimates the data. Keywords: Nonlinear waves; Shallow water waves; Spectral analysis. (Theses).
Author:
Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1572
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Book Description
Author: Alok K. Jha
Publisher:
ISBN:
Category :
Languages : en
Pages : 88
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Book Description
Second-order nonlinear models have been increasingly used in recent years model nonlinear processes in offshore engineering. We develop convenient analytic formulae to predict the nonlinearities in waves and to predict the crest height distribution in a specified wave condition. We apply such models to study the properties of random ocean waves. These include measured waves both in wave tanks and in field. Statistics comparison between model and measurements include: moment comparisons, comparison of distributions of wave elevations, crest heights, wave heights, and conditional distributions of local wave parameters, for example, crest height given wave heights, wave periods given crest heights, among others. We find the second-order model predictions to agree quite closely with the field measurements, while the wave tank statistics seem to be underpredicted by the second-order model. Finally, we solve the inverse problem, in which we identify the underlying first-order wave components, which when run through the second-order wave predictor matches the measured wave histories time point by time point.
Author:
Publisher:
ISBN:
Category : Marine biology
Languages : en
Pages : 646
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Book Description
Author: I.R. Young
Publisher: Elsevier
ISBN: 0080543804
Category : Science
Languages : en
Pages : 307
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Book Description
The goals of wind wave research are relatively well defined: to be able to predict the wind wave field and its effect on the environment. That environment could be natural (beaches, the atmosphere etc.) or imposed by human endeavour (ports, harbours, coastal settlements etc.). Although the goals are similar, the specific requirements of these various fields differ considerably.This book attempts to summarise the current state of this knowledge and to place this understanding into a common frame work. It attempts to take a balanced approach between the pragmatic engineering view of requiring a short term result and the scientific quest for detailed understanding. Thus, it attempts to provide a rigorous description of the physical processes involved as well as practical predictive tools.
Author: Nizar Abcha
Publisher: Springer
ISBN: 3319781936
Category : Science
Languages : en
Pages : 238
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Book Description
This book addresses the fascinating phenomena associated with nonlinear waves and spatio-temporal patterns. These appear almost everywhere in nature from sand bed forms to brain patterns, and yet their understanding still presents fundamental scientific challenges. The reader will learn here, in particular, about the current state-of-the art and new results in: Nonlinear water waves: resonance, solitons, focusing, Bose-Einstein condensation, as well as and their relevance for the sea environment (sea-wind interaction, sand bed forms, fiber clustering) Pattern formation in non-equilibrium media: soap films, chimera patterns in oscillating media, viscoelastic Couette-Taylor flow, flow in the wake behind a heated cylinder, other pattern formation. The editors and authors dedicate this book to the memory of Alexander Ezersky, Professor of Fluid Mechanics at the University of Caen Normandie (France) from September 2007 to July 2016. Before 2007, he had served as a Senior Scientist at the Institute of Applied Physics of the Russian Academy of Sciences in Nizhny Novgorod (Russia). The chapters have been written by leading scientists in Nonlinear Physics, and the topics chosen so as to cover all the fields to which Prof. Ezersky himself contributed, by means of experimental, theoretical and numerical approaches. The volume will appeal to advanced students and researchers studying nonlinear waves and pattern dynamics, as well as other scientists interested in their applications in various natural media.
Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 814
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Book Description
Author: A.E Mansour
Publisher: Elsevier
ISBN: 008054116X
Category : Technology & Engineering
Languages : en
Pages : 523
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Book Description
KEY FEATURES: - Provides researchers in Ocean engineering with a thorough review of the latest research in the field - Lengthy reports by leading experts - A valuable resource for all interested in ocean engineering DESCRIPTION:The International Ship and Offshore Congress (ISSC) is a forum for the exchange of information by experts undertaking and applying marine structural research. These three volumes contain the eight technical committee reports, six Specialist Committee and 2 Special Task Committee reports which were presented for the 15th International Ship and Offshore Structures Congress (ISSC 2004) in San Diego USA, between 11th and 15th August 2003. Volume III will be published in 2004 and is to contain the discussion of the reports, the chairmen's reply, the text of the invited Lecture and the congress report of ISSC 2003.
Author: Adem Akpinar
Publisher: Frontiers Media SA
ISBN: 2832519482
Category : Science
Languages : en
Pages : 283
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Book Description
Author: DanLing Tang
Publisher: Springer Science & Business Media
ISBN: 3642165419
Category : Technology & Engineering
Languages : en
Pages : 400
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Book Description
Remote Sensing of the Changing Oceans is a comprehensive account of the basic concepts, theories, methods and applications used in ocean satellite remote sensing. The book provides a synthesis of various new ideas and theories and discusses a series of key research topics in oceanic manifestation of global changes as viewed from space. A variety of research methods used in the analysis and modeling of global changes are introduced in detail along with numerous examples from around the world’s oceans. The authors review the changing oceans at different levels, including Global and Regional Observations, Natural Hazards, Coastal Environment and related scientific issues, all from the unique perspective of Satellite Observation Systems. Thus, the book not only introduces the basics of the changing oceans, but also new developments in satellite remote sensing technology and international cooperation in this emerging field. Danling Tang (Lingzis) received her Ph.D from Hong Kong University of Science and Technology. She conducted research and teaching in Hong Kong, USA, Japan, and South Korea for more than 10 years; in 2004, she received “100 Talents Program of Chinese Academy of Sciences” and returned to China. She was a professor of Fudan University, and now is a Leading Professor of “Remote Sensing of Marine Ecology and Environment” at the South China Sea Institute of Oceanology, Chinese Academy of Sciences. Dr. Tang has been working on satellite remote sensing of marine ecology and environment; her major research interests include ocean dynamics of phytoplankton bloom, global environmental changes, and natural hazards. Dr. Tang has organized several international conferences, workshops, and training, she also services as member of organizing committee for several international scientific organizations; she was the Chairman of the 9th Pan Ocean Remote Sensing Conference (PORSEC 2008), and currently is the President-elect of PORSEC Association.
