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An analytical model to predict dune and cliff notching due to wave impact

Larson, Magnus LU ; Sunamura, Tsuguo ; Erikson, Li LU ; Bayram, Atilla and Hanson, Hans LU (2010) International Conference on Coastal Engineering, 2010 In Proceedings of the Coastal Engineering Conference
Abstract
A model was developed to calculate the evolution of a notch in a dune or cliff due to wave impact. Analytical solutions were derived to the model for schematized conditions regarding forcing and dune/cliff properties. Comparisons were made with laboratory experiments where the time evolution of the notch was measured. Values of the transport coefficients in the analytical solutions were determined by least-square fitting the solutions to the laboratory data. Some of these coefficients could be related to the ratio between parameters describing the forcing and the dune/cliff strength. The evolution of the dune notch displayed a linear behavior at short times, whereas the cliff notch showed a more complex response for cases where a feedback... (More)
A model was developed to calculate the evolution of a notch in a dune or cliff due to wave impact. Analytical solutions were derived to the model for schematized conditions regarding forcing and dune/cliff properties. Comparisons were made with laboratory experiments where the time evolution of the notch was measured. Values of the transport coefficients in the analytical solutions were determined by least-square fitting the solutions to the laboratory data. Some of these coefficients could be related to the ratio between parameters describing the forcing and the dune/cliff strength. The evolution of the dune notch displayed a linear behavior at short times, whereas the cliff notch showed a more complex response for cases where a feedback between the notch and a beach formed seaward of the cliff occurred. (Less)
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author
; ; ; and
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Analytical model, Cliff erosion, Dune erosion, Laboratory experiments, Notching, Storms
host publication
Proceedings of 32nd Conference on Coastal Engineering
series title
Proceedings of the Coastal Engineering Conference
editor
McKee Smith, Jane and Lynett, Patrick
pages
11 pages
publisher
Coastal Engineering Research Council
conference name
International Conference on Coastal Engineering, 2010
conference location
Shanghai, China
conference dates
2010-06-30 - 2010-07-05
external identifiers
  • scopus:84864453057
ISSN
0161-3782
ISBN
9780989661102
9781629931210
DOI
10.9753/icce.v32.sediment.35
language
English
LU publication?
yes
id
0fbba3b0-6416-4950-abcd-f189228dfad4
date added to LUP
2019-01-30 15:16:01
date last changed
2021-01-06 04:50:40
@inproceedings{0fbba3b0-6416-4950-abcd-f189228dfad4,
  abstract     = {A model was developed to calculate the evolution of a notch in a dune or cliff due to wave impact. Analytical solutions were derived to the model for schematized conditions regarding forcing and dune/cliff properties. Comparisons were made with laboratory experiments where the time evolution of the notch was measured. Values of the transport coefficients in the analytical solutions were determined by least-square fitting the solutions to the laboratory data. Some of these coefficients could be related to the ratio between parameters describing the forcing and the dune/cliff strength. The evolution of the dune notch displayed a linear behavior at short times, whereas the cliff notch showed a more complex response for cases where a feedback between the notch and a beach formed seaward of the cliff occurred.},
  author       = {Larson, Magnus and Sunamura, Tsuguo and Erikson, Li and Bayram, Atilla and Hanson, Hans},
  booktitle    = {Proceedings of 32nd Conference on Coastal Engineering},
  editor       = {McKee Smith, Jane and Lynett, Patrick},
  isbn         = {9780989661102},
  issn         = {0161-3782},
  language     = {eng},
  month        = {12},
  publisher    = {Coastal Engineering Research Council},
  series       = {Proceedings of the Coastal Engineering Conference},
  title        = {An analytical model to predict dune and cliff notching due to wave impact},
  url          = {http://dx.doi.org/10.9753/icce.v32.sediment.35},
  doi          = {10.9753/icce.v32.sediment.35},
  year         = {2010},
}