Advanced

An analytical model to predict dune erosion due to wave impact

Larson, Magnus LU ; Erikson, Li LU and Hanson, Hans LU (2004) In Coastal Engineering 51(8-9). p.675-696
Abstract
An analytical model is developed to calculate recession distance and eroded volume for coastal dunes during severe storms. The transport relationship used in the model is based on wave impact theory, where individual swash waves hitting the dune face induce the erosion. Combining this relationship with the sediment volume conservation equation describes the response of the dune to high waves and water levels. Four different data sets on dune erosion, originating from the laboratory and the field, were employed to validate the model and to determine the value of an empirical transport coefficient appearing in the analytical solutions. The time evolution of dune recession observed in the different data sets was well described by the model,... (More)
An analytical model is developed to calculate recession distance and eroded volume for coastal dunes during severe storms. The transport relationship used in the model is based on wave impact theory, where individual swash waves hitting the dune face induce the erosion. Combining this relationship with the sediment volume conservation equation describes the response of the dune to high waves and water levels. Four different data sets on dune erosion, originating from the laboratory and the field, were employed to validate the model and to determine the value of an empirical transport coefficient appearing in the analytical solutions. The time evolution of dune recession observed in the different data sets was well described by the model, but the empirical coefficient showed some variation between cases, especially for the field data. In practical applications of the model, it is recommended to use a range of coefficient values to include an uncertainty estimate of calculated quantities, such as recession distance and eroded volume. (C) 2004 Elsevier B.V. All rights reserved. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
analytical model, dune erosion, wave impact, large wave tank data, runup height, storm erosion, swash bore
in
Coastal Engineering
volume
51
issue
8-9
pages
675 - 696
publisher
Elsevier
external identifiers
  • wos:000224452000003
  • scopus:4644336348
ISSN
0378-3839
DOI
10.1016/j.coastaleng.2004.07.003
language
English
LU publication?
yes
id
8107d28e-0b33-4b18-9bc1-d3bf6505e6c7 (old id 264089)
date added to LUP
2007-08-03 09:24:34
date last changed
2017-11-26 03:45:18
@article{8107d28e-0b33-4b18-9bc1-d3bf6505e6c7,
  abstract     = {An analytical model is developed to calculate recession distance and eroded volume for coastal dunes during severe storms. The transport relationship used in the model is based on wave impact theory, where individual swash waves hitting the dune face induce the erosion. Combining this relationship with the sediment volume conservation equation describes the response of the dune to high waves and water levels. Four different data sets on dune erosion, originating from the laboratory and the field, were employed to validate the model and to determine the value of an empirical transport coefficient appearing in the analytical solutions. The time evolution of dune recession observed in the different data sets was well described by the model, but the empirical coefficient showed some variation between cases, especially for the field data. In practical applications of the model, it is recommended to use a range of coefficient values to include an uncertainty estimate of calculated quantities, such as recession distance and eroded volume. (C) 2004 Elsevier B.V. All rights reserved.},
  author       = {Larson, Magnus and Erikson, Li and Hanson, Hans},
  issn         = {0378-3839},
  keyword      = {analytical model,dune erosion,wave impact,large wave tank data,runup height,storm erosion,swash bore},
  language     = {eng},
  number       = {8-9},
  pages        = {675--696},
  publisher    = {Elsevier},
  series       = {Coastal Engineering},
  title        = {An analytical model to predict dune erosion due to wave impact},
  url          = {http://dx.doi.org/10.1016/j.coastaleng.2004.07.003},
  volume       = {51},
  year         = {2004},
}