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Long-term simulations of subaerial beach erosion and overwash during storms

Larson, Magnus LU and Kraus, Nicholas C. (2009) International Conference on Coastal Engineering, 2008 In Coastal Engineering 1-5. p.2424-2436
Abstract
During severe storms, high waves and water levels can reach the subaerial portion of the beach and cause significant morphological change at elevations where the waves cannot reach under typical sea conditions. Coastal dunes may suffer direct wave impact and erode, increasing the likelihood of overwash and breaching, potentially flooding low-lying areas behind the dunes. Barrier islands are also vulnerable to high waves and water levels. The objective of the present study was to develop an analytical model of erosion due to wave impact and sediment transport in the overwash for use in long-term modeling of coastal evolution. Model components describing dune erosion and overwash transport were validated with field data. After validation,... (More)
During severe storms, high waves and water levels can reach the subaerial portion of the beach and cause significant morphological change at elevations where the waves cannot reach under typical sea conditions. Coastal dunes may suffer direct wave impact and erode, increasing the likelihood of overwash and breaching, potentially flooding low-lying areas behind the dunes. Barrier islands are also vulnerable to high waves and water levels. The objective of the present study was to develop an analytical model of erosion due to wave impact and sediment transport in the overwash for use in long-term modeling of coastal evolution. Model components describing dune erosion and overwash transport were validated with field data. After validation, the analytical model was employed at two coastal sites, Ocean City on the United States East Coast and the Ebro Delta on the Spanish Mediterranean Coast, to estimate parameters employed for assessing the impact of storms on beaches, such as eroded volume, overwash volume, beach crest reduction, and contour-line recession. These parameters were subsequently analyzed to derive empirical probability distribution functions for risk assessments concerning flooding and erosion in coastal areas. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
in
Coastal Engineering
volume
1-5
pages
2424 - 2436
publisher
World Scientific
conference name
International Conference on Coastal Engineering, 2008
external identifiers
  • wos:000268630701042
  • scopus:84873867722
ISSN
0378-3839
language
English
LU publication?
yes
id
91026407-42a2-490a-97aa-1dbb165a8ccb (old id 1478429)
date added to LUP
2009-09-29 09:48:14
date last changed
2017-01-01 06:34:43
@inproceedings{91026407-42a2-490a-97aa-1dbb165a8ccb,
  abstract     = {During severe storms, high waves and water levels can reach the subaerial portion of the beach and cause significant morphological change at elevations where the waves cannot reach under typical sea conditions. Coastal dunes may suffer direct wave impact and erode, increasing the likelihood of overwash and breaching, potentially flooding low-lying areas behind the dunes. Barrier islands are also vulnerable to high waves and water levels. The objective of the present study was to develop an analytical model of erosion due to wave impact and sediment transport in the overwash for use in long-term modeling of coastal evolution. Model components describing dune erosion and overwash transport were validated with field data. After validation, the analytical model was employed at two coastal sites, Ocean City on the United States East Coast and the Ebro Delta on the Spanish Mediterranean Coast, to estimate parameters employed for assessing the impact of storms on beaches, such as eroded volume, overwash volume, beach crest reduction, and contour-line recession. These parameters were subsequently analyzed to derive empirical probability distribution functions for risk assessments concerning flooding and erosion in coastal areas.},
  author       = {Larson, Magnus and Kraus, Nicholas C.},
  booktitle    = {Coastal Engineering},
  issn         = {0378-3839},
  language     = {eng},
  pages        = {2424--2436},
  publisher    = {World Scientific},
  title        = {Long-term simulations of subaerial beach erosion and overwash during storms},
  volume       = {1-5},
  year         = {2009},
}