Bedload And Wave Thrust Computations Of Alongshore Sand Transport

DOWNLOAD

Download Bedload And Wave Thrust Computations Of Alongshore Sand Transport PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Bedload And Wave Thrust Computations Of Alongshore Sand Transport book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page

Bedload And Wave Thrust Computations Of Alongshore Sand Transport

DOWNLOAD
Author : Robert J. Hallermeier
language : en
Publisher:
Release Date : 1982

Bedload And Wave Thrust Computations Of Alongshore Sand Transport written by Robert J. Hallermeier and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1982 with Bed load categories.

Longshore Sand Transport Distribution Across The Surf Zone Due To Random Waves

DOWNLOAD
Author : Saad Mesbah M. Abdelrahman
language : en
Publisher:
Release Date : 1983

Longshore Sand Transport Distribution Across The Surf Zone Due To Random Waves written by Saad Mesbah M. Abdelrahman and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Beach erosion categories.

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.

Review Of The Corps Of Engineers Approach To The Problem Of Shoreline Erosion Control

DOWNLOAD
Author : United States. Army. Corps of Engineers. Task Force on Shore Protection
language : en
Publisher:
Release Date : 1985

Review Of The Corps Of Engineers Approach To The Problem Of Shoreline Erosion Control written by United States. Army. Corps of Engineers. Task Force on Shore Protection and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1985 with Shore protection categories.

Littoral Sand Transport From Longshore Currents

DOWNLOAD
Author : Todd E. Walton
language : en
Publisher:
Release Date : 1980

Littoral Sand Transport From Longshore Currents written by Todd E. Walton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Littoral drift categories.

Short Term Impoundment Of Longshore Sediment Transport

DOWNLOAD
Author : Kevin R. Bodge
language : en
Publisher:
Release Date : 1987

Short Term Impoundment Of Longshore Sediment Transport written by Kevin R. Bodge and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Groins (Shore protection) categories.

Local down- drift profile changes were found to be poor indicators of the local updrift impoundment. In general, the longshore transport profiles were found to be bimodal with peaks just landward of the breakpoint and near the shoreline; the relative significance of the longshore transport shifted from the near-breakpoint peak to the near-shoreline peak as the wave condition varied from spilling to collapsing breakers. Alternately stated, the longshore transport distribution appeared strongly beach profile dependent, as transport was most pronounced over local regions of high bed steepness. Between 10% and 30% of the total longshore transport was observed seaward of the breakpoint for all cases. Long- shore transport in the swash zone represented at least 5% to 60% of the total transport, where the largest swash contributions were associated with plunging/collapsing and collapsing surf conditions.

Beaches

DOWNLOAD
Author : J. Hardisty
language : en
Publisher: Springer Science & Business Media
Release Date : 1990-12-31

Beaches written by J. Hardisty and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990-12-31 with Science categories.

This book places research into worldwide beach environments in its geomorphological context. Having introduced the systems approach to environmental modelling, and identified the groups of processes operating on beaches, the text is structured in five parts: the first three sections provide a sequential account of the effects of these processes on the beach system; part four focuses on theory relevant to landform stability, then reviews existing empirical, analytical and numerical models; and the final section introduces a computer model and shows its application to the process functions developed earlier.

Sand And Stone Transport Under Breaking Irregular Waves And Currents

DOWNLOAD
Author : Ali Farhadzadeh
language : en
Publisher:
Release Date : 2011

Sand And Stone Transport Under Breaking Irregular Waves And Currents written by Ali Farhadzadeh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with Sand categories.

Five tests were conducted in a wave basin with a recirculation system in the Large-scale Sediment Transport Facility (LSTF) of the US Army Engineer Research and Development Center to study sediment transport due to waves and currents. These five tests are explained where the fine sand beach is assumed to be impermeable. The analyzed data are presented for the subsequent comparison with the cross-shore numerical model CSHORE. The effects of external currents on the wave-induced longshore current and sediment transport in the surf zone are examined using the five tests and CSHORE which is extended to include the alongshore pressure gradient term in the longshore momentum equation and to allow oblique waves in the wet and dry zone on a beach. Analytical solutions for the case of current only are derived from the combined wave and current model and the sediment transport model in CSHORE. The cross-shore variations of the wave setup, root-mean-square wave height, mean cross-shore and longshore velocities, and total longshore sediment transport rate are predicted fairly well for the five tests with no and favorable pressure gradients. The cross-shore variation of the suspended sediment volume per unit area is predicted only qualitatively partly because of the large scatter of the sediment volumes estimated from the measured sand concentrations. The calibrated and verified CSHORE is used to compute cases of adverse and time-varying pressure gradients and extrapolate the experimental results for wider applications. The adverse alongshore pressure gradient is shown to reverse the longshore current in the outer surf zone. The tidal effect on longshore sediment transport is predicted to be minor if the tide generates the alongshore pressure gradient varying with time sinusoidally. Permeability is important for rubble mound structures and gravel beaches. A probabilistic hydrodynamic model for the wet and dry zone on a permeable structure is developed to predict irregular wave action on the structure above the still water level. The model is based on the time-averaged continuity and momentum equations for nonlinear shallow-water waves coupled with the exponential probability distribution of the water depth. The model predicts the cross-shore variations of the mean and standard deviation of the water depth and horizontal velocity. The model is compared with four test series in which measurement was made of the wave overtopping rate and probability as well as the water depth, velocity and discharge exceeded by 2% of incident 1,000 waves. The agreement is mostly within a factor of 2. Damage progression of a stone armor layer is predicted by modifying a formula for bed load on sand beaches with input from the hydrodynamic model. The damage progression model is compared with three tests that lasted up to 28.5 hours. The numerical model tends to underpredict the eroded area above the still water level (SWL) as well as the deposited area below SWL at the beginning of each test. The agreement tends to improve with the damage progression. This may be related to stone units placed in unstable manners on the initial profile. The model predicts the temporal progression of the eroded area quite well. CSHORE predicts both sand transport on impermeable beaches and stone transport on permeable structures within the error of a factor of 2.

Sand Transport Limits In Coastal Structure Designs

DOWNLOAD
Author : Robert J. Hallermeier
language : en
Publisher:
Release Date : 1983

Sand Transport Limits In Coastal Structure Designs written by Robert J. Hallermeier and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Coastal engineering categories.

Technical Abstract Bulletin

DOWNLOAD
Author :
language : en
Publisher:
Release Date :

Technical Abstract Bulletin written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on with Science categories.

Waves On Beaches And Resulting Sediment Transport

DOWNLOAD
Author : R. E. Meyer
language : en
Publisher: Elsevier
Release Date : 2013-09-24

Waves On Beaches And Resulting Sediment Transport written by R. E. Meyer and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-09-24 with Science categories.

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.