An Analysis of Longshore Currents and Associated Sediment Transport in the Surf Zone
Author | : D. W. Ostendorf |
Publisher | : |
Total Pages | : 200 |
Release | : 1979 |
Genre | : Littoral drift |
ISBN | : |
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Author | : D. W. Ostendorf |
Publisher | : |
Total Pages | : 200 |
Release | : 1979 |
Genre | : Littoral drift |
ISBN | : |
Author | : Saad Mesbah M. Abdelrahman |
Publisher | : |
Total Pages | : 180 |
Release | : 1983 |
Genre | : Beach erosion |
ISBN | : |
Water waves are one of the principal causes of shoreline changes. When waves break along the shore, they release their energy and momentum and give rise to a longshore current. The longshore current, along with the stirring action of the waves, is the primary mechanism for longshore sediment transport. The longshore sand transport rate is an essential factor determining erosion or accretion along a coast. If the longshore sand transport rate can be accurately estimated, a quantitative picture of shoreline evolution can be evaluated, including changes of the shoreline due to marine structures. In the present study, analytical and numerical models are developed based on a longshore current model for random waves and a sediment transport formulation by Thornton to predict the cross-shore sediment transport distribution and to compute the total volume of sand transport rate. The model is compared with the field data acquired from Leadbetter Beach, Santa Barbara, California.
Author | : R. E. Meyer |
Publisher | : Elsevier |
Total Pages | : 471 |
Release | : 2013-09-24 |
Genre | : Science |
ISBN | : 1483264521 |
Waves on Beaches and Resulting Sediment Transport documents the proceedings of an Advanced Seminar held in October, 1971, aiming to offer a coherent, interdisciplinary view of the state of physical research in coastal oceanography and the direction in which this subject is moving. The articles range from wave refraction to littoral erosion, and the authors from geologists to mathematicians. The book opens with a study on the characteristics of wave records in the coastal zone. This is followed by separate chapters on sediment transport in beaches; equations for water waves; small-amplitude normal oscillations of a liquid body; and wave behavior near caustics in models and in nature. Subsequent chapters deal with nonlinear wave interaction in a variety of physical phenomena including deep water waves; the study of longshore currents; sediment suspension by periodic waves; forms of sediment accumulation in the beach zone; run-up on beaches; and the wave breaking process in shallow water.
Author | : Yoshimitsu Tajima |
Publisher | : |
Total Pages | : 313 |
Release | : 2004 |
Genre | : Beaches |
ISBN | : |
(Cont.) Introducing the predicted near-shore hydrodynamic characteristics, we extend the conceptual bedload and associated suspended load sediment transport models (Mad- sen, 2001) to the surf zone. The extended sediment transport model accounts for breaking wave effects such as an increase of turbulence due to broken waves and change of the momentum force balances due to breaking waves and surface rollers. The model predicted the peaks of longshore sediment transport observed near the shore line and the wave breaking point for plunging breakers.
Author | : M. Schwartz |
Publisher | : Springer Science & Business Media |
Total Pages | : 1243 |
Release | : 2006-11-08 |
Genre | : Science |
ISBN | : 1402038801 |
This new Encyclopedia of Coastal Science stands as the latest authoritative source in the field of coastal studies, making it the standard reference work for specialists and the interested lay person. Unique in its interdisciplinary approach. This Encyclopedia features contributions by 245 well-known international specialists in their respective fields and is abundantly illustrated with line-drawings and photographs. Not only does this volume offer an extensive number of entries, it also includes various appendices, an illustrated glossary of coastal morphology and extensive bibliographic listings.
Author | : R.J. Seymour |
Publisher | : Springer Science & Business Media |
Total Pages | : 410 |
Release | : 2013-11-11 |
Genre | : Science |
ISBN | : 1489925317 |
This book represents the efforts of over a hundred individuals who planned and executed the NSTS field experiments, analyzed the billions of data points, and distilled their findings and insights into the summaries found here. Because these experiments were of a scope that will seldom, if ever, be duplicated, and because the program brought together many of the foremost field experimentalists in this country, we all felt from the beginning that it was important to preserve the outcome. This was done in two ways. First, the raw data were made available to any interested investigator within 18 months of the completion of each experiment. Secondly, both the methodology of the experiments and the findings from them were codified in the form of a monograph. This book is that result. I have had the occasion recently (Sediments '87 Proceedings, Vol. 1, pp. 642-651) to assess the NSTS performance. I found that we made giant strides in our understanding of the surf zone hydrodynamics --far more than our fondest expectations at the beginning. We were able to do less than we had hoped about the response of the sediment, largely because of a limited ability to measure it at a point. As I reported in the Sediments '87 assessment, we established a new state of the art in measurement techniques and we demonstrated the effectiveness of large, multi-investigator, instrument-intensive experiments for studying nearshore processes.
Author | : Madan Mohan Das |
Publisher | : |
Total Pages | : 92 |
Release | : 1971 |
Genre | : Beach erosion |
ISBN | : |
Author | : Neville Burt |
Publisher | : |
Total Pages | : 490 |
Release | : 1997-04-03 |
Genre | : Science |
ISBN | : |
There is an alarming tendency today to assume that something calculated by a computer must be correct, yet the phrase 'garbage in, garbage out' (gigo) is possibly nowhere more (generally) appropriate than in computer modelling of cohesive sediment behaviour. The behaviour of 'mud' is highly complex and one only needs to look at a sample under a microscope to see why - the variety of particle shapes, not to mention the presence of living organisms, make it a substance with properties virtually unique to its situation which even change with time. For many years most researchers tended to avoid it, preferring to study sand and gravel, but a dedicated few tackled it and found a forum for discussing their work in the first Cohesive Sediments Workshop in Florida in 1980. The workshop met about every three years resulting in publication of some of the most definitive papers on the subject. By 1994 it was time to recognise the extensive research being carried on in Europe by holding the workshop in that region. Intercoh '94 (the 4th Nearshore and Estuarine Cohesive Sediment Transport Conference) drew together about 100 of the world's leading researchers in the field. The resulting papers, presented in this volume, truly represent the definitive state of the art on the measurement and modelling of mud properties today.
Author | : G. Benassai |
Publisher | : WIT Press |
Total Pages | : 353 |
Release | : 2006 |
Genre | : Technology & Engineering |
ISBN | : 1845640543 |
"Provides an integrated approach to coastal dynamics and shoreline protection, aided by the use of specific case studies" -- Back cover.