Infragravity Waves In The Nearshore Zone

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Infragravity Waves in the Nearshore Zone

Author : Kent K. Hathaway
Publisher :
ISBN 13 :
Total Pages : 96 pages
Book Rating : 4.3/5 (121 download)

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Book Synopsis Infragravity Waves in the Nearshore Zone by : Kent K. Hathaway

Download or read book Infragravity Waves in the Nearshore Zone written by Kent K. Hathaway and published by . This book was released on 1998 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Shore Wave Modulation Due to Infragravity Waves in the Nearshore Zone, with Applications

Author : Saad M. M. Abdelrahman
Publisher :
ISBN 13 :
Total Pages : 140 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Shore Wave Modulation Due to Infragravity Waves in the Nearshore Zone, with Applications by : Saad M. M. Abdelrahman

Download or read book Shore Wave Modulation Due to Infragravity Waves in the Nearshore Zone, with Applications written by Saad M. M. Abdelrahman and published by . This book was released on 1986 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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).

Infragravity Waves in the Nearshore Zone

Author : Kent K. Hathaway
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.E/5 ( download)

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Book Synopsis Infragravity Waves in the Nearshore Zone by : Kent K. Hathaway

Download or read book Infragravity Waves in the Nearshore Zone written by Kent K. Hathaway and published by . This book was released on 1998 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Short Wave Modulation Due to Infragravity Waves in the Nearshore Zone, with Applications

Author : Saad M. M. Abdelrahman
Publisher :
ISBN 13 :
Total Pages : 256 pages
Book Rating : 4.:/5 (645 download)

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Book Synopsis Short Wave Modulation Due to Infragravity Waves in the Nearshore Zone, with Applications by : Saad M. M. Abdelrahman

Download or read book Short Wave Modulation Due to Infragravity Waves in the Nearshore Zone, with Applications written by Saad M. M. Abdelrahman and published by . This book was released on 1986 with total page 256 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Observations of Nearshore Infragravity Waves: Seaward and Shoreward Propagating Components

Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (946 download)

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Book Synopsis Observations of Nearshore Infragravity Waves: Seaward and Shoreward Propagating Components by :

Download or read book Observations of Nearshore Infragravity Waves: Seaward and Shoreward Propagating Components written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The variation of seaward and shoreward infragravity energy fluxes across the shoaling and surf zones of a gently sloping sandy beach is estimated from field observations and related to forcing by groups of sea and swell, dissipation, and shoreline reflection. Data from collocated pressure and velocity sensors deployed between 1 and 6 m water depth are combined, using the assumption of cross-shore propagation, to decompose the infragravity wave field into shoreward and seaward propagating components. Seaward of the surf zone, shoreward propagating infragravity waves are amplified by nonlinear interactions with groups of sea and swell, and the shoreward infragravity energy flux increases in the onshore direction. In the surf zone, nonlinear phase coupling between infragravity waves and groups of sea and swell decreases, as does the shoreward infragravity energy flux, consistent with the cessation of nonlinear forcing and the increased importance of infragravity wave dissipation. Seaward propagating infragravity waves are not phase coupled to incident wave groups, and their energy levels suggest strong infragravity wave reflection near the shoreline. The cross-shore variation of the seaward energy flux is weaker than that of the shoreward flux, resulting in cross-shore variation of the squared infragravity reflection coefficient (ratio of seaward to shoreward energy flux) between about 0.4 and 1.5.

Coastal Dynamics '01

Author : Hans Hanson
Publisher :
ISBN 13 :
Total Pages : 1110 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Coastal Dynamics '01 by : Hans Hanson

Download or read book Coastal Dynamics '01 written by Hans Hanson and published by . This book was released on 2001 with total page 1110 pages. Available in PDF, EPUB and Kindle. Book excerpt: This collection contains 109 papers presented at the Fourth Conference on Coastal Dynamics, held in Lund, Sweden, June 11-15, 2001.

Infragravity Waves Over Topography

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (659 download)

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Book Synopsis Infragravity Waves Over Topography by :

Download or read book Infragravity Waves Over Topography written by and published by . This book was released on 2001 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Support from the Office of Naval Research (Coastal Geosciences Program, N00014-02-10145), the National Science Foundation (Physical Oceanography, OCE-0115850).

Infragravity Velocity Profiles in the Surf-zone

Author : Uday Putrevu
Publisher :
ISBN 13 :
Total Pages : 76 pages
Book Rating : 4.:/5 (359 download)

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Book Synopsis Infragravity Velocity Profiles in the Surf-zone by : Uday Putrevu

Download or read book Infragravity Velocity Profiles in the Surf-zone written by Uday Putrevu and published by . This book was released on 1994 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Introduction to Coastal Processes and Geomorphology

Author : Robin Davidson-Arnott
Publisher : Cambridge University Press
ISBN 13 : 1108424279
Total Pages : 541 pages
Book Rating : 4.1/5 (84 download)

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Book Synopsis Introduction to Coastal Processes and Geomorphology by : Robin Davidson-Arnott

Download or read book Introduction to Coastal Processes and Geomorphology written by Robin Davidson-Arnott and published by Cambridge University Press. This book was released on 2019-09-19 with total page 541 pages. Available in PDF, EPUB and Kindle. Book excerpt: Grounded in current research, this second edition has been thoroughly updated, featuring new topics, global examples and online material. Written for students studying coastal geomorphology, this is the complete guide to the processes at work on our coastlines and the features we see in coastal systems across the world.

Infragravity Energy and Its Implications in Nearshore Sediment Transport and Sandbar Dynamics

Author : Joan Oltman-Shay
Publisher :
ISBN 13 :
Total Pages : 42 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Infragravity Energy and Its Implications in Nearshore Sediment Transport and Sandbar Dynamics by : Joan Oltman-Shay

Download or read book Infragravity Energy and Its Implications in Nearshore Sediment Transport and Sandbar Dynamics written by Joan Oltman-Shay and published by . This book was released on 1989 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Sandy Beach Morphodynamics

Author : Derek Jackson
Publisher : Elsevier
ISBN 13 : 0081029276
Total Pages : 814 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Sandy Beach Morphodynamics by : Derek Jackson

Download or read book Sandy Beach Morphodynamics written by Derek Jackson and published by Elsevier. This book was released on 2020-06-03 with total page 814 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sandy beaches represent some of the most dynamic environments on Earth and examining their morphodynamic behaviour over different temporal and spatial scales is challenging, relying on multidisciplinary approaches and techniques. Sandy Beach Morphodynamics brings together the latest research on beach systems and their morphodynamics and the ways in which they are studied in 29 chapters that review the full spectrum of beach morphodynamics. The chapters are written by leading experts in the field and provide introductory level understanding of physical processes and resulting landforms, along with more advanced discussions. Includes chapters that are written by the world's leading experts, including the latest up-to-date thinking on a variety of subject areas Covers state-of-the-art techniques, bringing the reader the latest technologies/methods being used to understand beach systems Presents a clear-and-concise description of processes and techniques that enables a clear understanding of coastal processes

Infragravity Waves and Nearshore Bars

Author : Troels Aagaard
Publisher :
ISBN 13 :
Total Pages : 234 pages
Book Rating : 4.:/5 (475 download)

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Book Synopsis Infragravity Waves and Nearshore Bars by : Troels Aagaard

Download or read book Infragravity Waves and Nearshore Bars written by Troels Aagaard and published by . This book was released on 1989 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Waves in Oceanic and Coastal Waters

Author : Leo H. Holthuijsen
Publisher : Cambridge University Press
ISBN 13 : 1139462520
Total Pages : 9 pages
Book Rating : 4.1/5 (394 download)

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Book Synopsis Waves in Oceanic and Coastal Waters by : Leo H. Holthuijsen

Download or read book Waves in Oceanic and Coastal Waters written by Leo H. Holthuijsen and published by Cambridge University Press. This book was released on 2010-02-04 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: Waves in Oceanic and Coastal Waters describes the observation, analysis and prediction of wind-generated waves in the open ocean, in shelf seas, and in coastal regions with islands, channels, tidal flats and inlets, estuaries, fjords and lagoons. Most of this richly illustrated book is devoted to the physical aspects of waves. After introducing observation techniques for waves, both at sea and from space, the book defines the parameters that characterise waves. Using basic statistical and physical concepts, the author discusses the prediction of waves in oceanic and coastal waters, first in terms of generalised observations, and then in terms of the more theoretical framework of the spectral energy balance. He gives the results of established theories and also the direction in which research is developing. The book ends with a description of SWAN (Simulating Waves Nearshore), the preferred computer model of the engineering community for predicting waves in coastal waters.

The Proceedings Of The Coastal Sediments 2015

Author : Jun Cheng
Publisher : World Scientific
ISBN 13 : 981468998X
Total Pages : 3129 pages
Book Rating : 4.8/5 (146 download)

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Book Synopsis The Proceedings Of The Coastal Sediments 2015 by : Jun Cheng

Download or read book The Proceedings Of The Coastal Sediments 2015 written by Jun Cheng and published by World Scientific. This book was released on 2015-04-23 with total page 3129 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Proceedings contains over 260 papers on cutting-edge research presented at the eighth international Symposium on Coastal Sediment Processes, held May 11 - 15, 2015, in San Diego, California, USA. This technical specialty conference was devoted to promoting an interdisciplinary exchange of state-of-the-art knowledge among researchers in the fields of coastal engineering, geology, oceanography, and related disciplines, with the theme of Understanding and Working with Nature.Focusing on the physical aspects of the sediment processes in various coastal environments, this Proceedings provides findings from the latest research and newest engineering applications. Sessions covered a wide range of topics including barrier islands, beaches, climate and sea level, cohesive and noncohesive sediments, coastal bluffs, coastal marsh, dredged sediments, inlet and navigation channels, regional sediment management, river deltas, shore protection, tsunamis, and vegetation-sediment interaction. Several special sessions included: Relevant science for changing coastlines: A Tribute to Gary Griggs; North Atlantic Coast Comprehensive Study and post-super-storm Sandy work; long-term coastal evolution; barrier islands of Louisiana; sea-level rise and super storms in a warming world; predicting decadal coastal geomorphic evolution; and contrasting Pacific coastal behavior with El Niño Southern Oscillation (ENSO), are also featured.

Water Waves: Theory And Experiment - Proceedings Of The Conference

Author : Mohammad F Mahmood
Publisher : World Scientific
ISBN 13 : 9814465135
Total Pages : 214 pages
Book Rating : 4.8/5 (144 download)

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Book Synopsis Water Waves: Theory And Experiment - Proceedings Of The Conference by : Mohammad F Mahmood

Download or read book Water Waves: Theory And Experiment - Proceedings Of The Conference written by Mohammad F Mahmood and published by World Scientific. This book was released on 2010-04-23 with total page 214 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this book is to introduce new researchers to the rich dynamical system of water waves, and to show how (some) abstract mathematical concepts can be applied fruitfully in a practical physical problem and to make the connection between theory and experiment. It provides a coherent set of lectures on the current status of water wave theory, including identification of some open problems.

Scientific and Technical Aerospace Reports

Author :
Publisher :
ISBN 13 :
Total Pages : 948 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Sandy Beach Morphodynamics

Author : Derek Jackson
Publisher : Elsevier
ISBN 13 : 0081029284
Total Pages : 816 pages
Book Rating : 4.0/5 (81 download)

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Book Synopsis Sandy Beach Morphodynamics by : Derek Jackson

Download or read book Sandy Beach Morphodynamics written by Derek Jackson and published by Elsevier. This book was released on 2020-05-19 with total page 816 pages. Available in PDF, EPUB and Kindle. Book excerpt: Sandy beaches represent some of the most dynamic environments on Earth and examining their morphodynamic behaviour over different temporal and spatial scales is challenging, relying on multidisciplinary approaches and techniques. Sandy Beach Morphodynamics brings together the latest research on beach systems and their morphodynamics and the ways in which they are studied in 29 chapters that review the full spectrum of beach morphodynamics. The chapters are written by leading experts in the field and provide introductory level understanding of physical processes and resulting landforms, along with more advanced discussions. Includes chapters that are written by the world’s leading experts, including the latest up-to-date thinking on a variety of subject areas Covers state-of-the-art techniques, bringing the reader the latest technologies/methods being used to understand beach systems Presents a clear-and-concise description of processes and techniques that enables a clear understanding of coastal processes