Short Wave Modulation Due To Infragravity Waves In The Nearshore Zone With Applications
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Short Wave Modulation Due To Infragravity Waves In The Nearshore Zone With Applications
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Author : Saad M. M. Abdelrahman
language : en
Publisher:
Release Date : 1986
Short Wave Modulation Due To Infragravity Waves In The Nearshore Zone With Applications written by Saad M. M. Abdelrahman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with categories.
Shore Wave Modulation Due To Infragravity Waves In The Nearshore Zone With Applications
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Author : Saad M. M. Abdelrahman
language : en
Publisher:
Release Date : 1986
Shore Wave Modulation Due To Infragravity Waves In The Nearshore Zone With Applications written by Saad M. M. Abdelrahman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Littoral drift categories.
The omni-present low frequency wave motion (30-300 sec) contains a substantial fraction of the total wave energy inside the surf zone. A more complete description of nearshore wave processes considers incident short period waves superposed on, and interacting with, long standing waves. The wind waves are modulated in amplitude, wavenumber and direction due to relatively slowly varying depth changes caused by the long waves. The energy in the wind wave band is enhanced by side band growth at the sum and difference frequencies of short and long waves (order 15% at the shoreline). The modulation is identified in the analysis of field data as a positive correlation between the long waves and the wind wave envelope near the shoreline. Considering oblique incident waves, a steady longshore current showing a non-vanishing current at the shoreline is found as a result of the non-linear interaction between monochromatic incident and infragravity waves. An analytical solution describing the unsteadiness of the longshore current is developed. Keywords include: Infragravity, Longshore Current, Sediment transport, and Surf zone dynamics. (Theses).
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1987
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Aeronautics categories.
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.
Infragravity Waves In The Nearshore Zone
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Author : Kent K. Hathaway
language : en
Publisher:
Release Date : 1998
Infragravity Waves In The Nearshore Zone written by Kent K. Hathaway and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with Coastal engineering categories.
This report summarizes the present state of knowledge on infragravity wave motions (nominally 0.003 to 0.05 Hz). Theoretical and observational studies are presented. Most of the studies discussed herein have been published elsewhere, however a few studies discussed in chapter 4 are presented for the first time in this report Measurements of nearshore waves and currents have shown that a significant amount of the total energy can be contained in the infragravity band, and on highly dissipative beaches the infragravity wave variance often dominates over energy in the incident wave band(0.05 to 0.3 Hz). An 8-month data set of infragravity variance measured at 8-m-depth at the shoreline (runup) was compared with incident wave variance. Analysis of the 8-m-depth data showed that high mode edge waves account for about 50 percent of the total infragravity variance, and as high as 80 percent at times. Significant edge wave heights greater than 20 cm were observed at the 8-m depth. Infragravity wave variance was shown to have a higher correlation with swell variance (C = 0.95) than with sea variance (C = 0.61). This report was motivated, in part, by the need to determine the significance of infragravity waves on coastal erosion and structure damage and by the desire to improve coastal engineering solutions to problems associated with nearshore processes.
Technical Reports Awareness Circular Trac
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Author :
language : en
Publisher:
Release Date : 1987-02
Technical Reports Awareness Circular Trac written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987-02 with Science categories.
Curricula In The Atmospheric Oceanic And Related Sciences
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Author :
language : en
Publisher:
Release Date : 1988
Curricula In The Atmospheric Oceanic And Related Sciences written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1988 with Meteorology categories.
Nonlinear Wave Dynamics Selected Papers Of The Symposium Held In Honor Of Philip L F Liu S 60th Birthday
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Author : Patrick Lynett
language : en
Publisher: World Scientific
Release Date : 2009-02-04
Nonlinear Wave Dynamics Selected Papers Of The Symposium Held In Honor Of Philip L F Liu S 60th Birthday written by Patrick Lynett and has been published by World Scientific this book supported file pdf, txt, epub, kindle and other format this book has been release on 2009-02-04 with Technology & Engineering categories.
In September 2006, research leaders in the field of coastal engineering, fluid mechanics, and wave theory met at Cornell University to celebrate the 60th birthday of Prof. Philip L-F Liu. This volume is a compilation of the research papers presented at the symposium, and includes both review and new research papers. Topics such as nonlinear wave theory, tsunamis, wave-structure interaction, turbulence, and modeling of complex sediment transport are discussed in this volume. All of the contributing authors are research collaborators of Prof. Liu, and include leaders in coastal engineering such as Maarten Dingemans, Hwung-Hweng Hwung, Nobu Kobayashi, Inigo Losada, Hocine Oumeraci, Costas Synolakis, and Harry Yeh.
Infragravity Water Waves Induced By Short Wave G Groups
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Author : Hemming A. Schaffer
language : en
Publisher:
Release Date : 1990
Infragravity Water Waves Induced By Short Wave G Groups written by Hemming A. Schaffer and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with categories.
Government Reports Announcements Index
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Author :
language : en
Publisher:
Release Date : 1987
Government Reports Announcements Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Science categories.
Shore Processes And Their Palaeoenvironmental Applications
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Author : Edward J. Anthony
language : en
Publisher: Elsevier
Release Date : 2008-11-21
Shore Processes And Their Palaeoenvironmental Applications written by Edward J. Anthony and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-11-21 with Science categories.
The last five years have been marked by rapid technological and analytical developments in the study of shore processes and in the comprehension of shore deposits and forms, and shoreline change over time. These developments have generated a considerable body of literature in a wide range of professional journals, thus illustrating the cross-disciplinary nature of shore processes and the palaeo-environmental dimension of shore change. The justification of the book lies in bringing together these developments using an objective approach that synthesises current advances, technical progress in the analysis of shores and shore processes, contradictory interpretations, and potential advances using future-generation developments in techniques. The book provides a comprehensive state-of-the-art presentation of shore processes and deposits across ranges of wave energy and tide-range environments, sediment supply and textural conditions, sea-level change, exceptional events and longer-term climate change, based on the most recently published literature in the marine sciences. The book insists on the nested time and spatial scales through which are inter-linked shore processes and deposits, thus providing a better understanding of the way shores change over time. The approach is thus cross-disciplinary, and gap-bridging between processes and deposits, between analytical techniques, and between timescales. The audience is from graduate level upwards, and the book is intended as a comprehensive reference source for professionals in a wide range of coastal science fields (geologists, sedimentologists, geomorphologists, oceanographers, engineers, managers, archaeologists...). * Aimed at graduates and specialists interested in coastal science* Presents background research, recent developments and future trends* Written by a leading scholar and industry expert