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A Numerical Model to Simulate Beach and Dune Evolution

Zhang, Jie LU and Larson, Magnus LU (2022) In Journal of Coastal Research 38(4). p.776-784
Abstract

A numerical model to simulate cross-shore (CS) beach and dune evolution induced by storms was developed in this study. The model development was partly based on previous CS modeling work in which modules describing the response of the beach profile in the offshore, surf, and swash zone were described in detail, but where the dune module is lacking. The dune module, adopting wave impact theory, was integrated into the previous model to complete a new numerical model. To calibrate and validate the new model, high-quality data on hydrodynamics and dune profile response from both laboratory and field data were used. The laboratory data included two experimental cases related to dune erosion from the SUPERTANK data collection project,... (More)

A numerical model to simulate cross-shore (CS) beach and dune evolution induced by storms was developed in this study. The model development was partly based on previous CS modeling work in which modules describing the response of the beach profile in the offshore, surf, and swash zone were described in detail, but where the dune module is lacking. The dune module, adopting wave impact theory, was integrated into the previous model to complete a new numerical model. To calibrate and validate the new model, high-quality data on hydrodynamics and dune profile response from both laboratory and field data were used. The laboratory data included two experimental cases related to dune erosion from the SUPERTANK data collection project, whereas the field data consisted of two cases from Ocean City, Maryland and one case from Myrtle Beach, South Carolina. Overall, good agreement was obtained between calculations and measurements, illustrating that the model is reliable and robust in simulating beach and dune evolution. However, the poststorm beach recovery in the swash zone could not be well captured by this model. Thus, in subsequent model development, onshore transport and accretion in the nearshore will be emphasized to simulate long-term beach evolution.

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author
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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
cross-shore transport, dune erosion, Myrtle Beach, Ocean City, Storms, SUPERTANK, wave impact theory
in
Journal of Coastal Research
volume
38
issue
4
pages
9 pages
publisher
Coastal Education Research Foundation Inc.
external identifiers
  • scopus:85133756893
ISSN
0749-0208
DOI
10.2112/JCOASTRES-D-21-00080.1
language
English
LU publication?
yes
id
4e45cf78-49f2-4fc1-8cca-eef0d409cbb4
date added to LUP
2022-08-26 15:37:54
date last changed
2025-03-07 10:44:49
@article{4e45cf78-49f2-4fc1-8cca-eef0d409cbb4,
  abstract     = {{<p>A numerical model to simulate cross-shore (CS) beach and dune evolution induced by storms was developed in this study. The model development was partly based on previous CS modeling work in which modules describing the response of the beach profile in the offshore, surf, and swash zone were described in detail, but where the dune module is lacking. The dune module, adopting wave impact theory, was integrated into the previous model to complete a new numerical model. To calibrate and validate the new model, high-quality data on hydrodynamics and dune profile response from both laboratory and field data were used. The laboratory data included two experimental cases related to dune erosion from the SUPERTANK data collection project, whereas the field data consisted of two cases from Ocean City, Maryland and one case from Myrtle Beach, South Carolina. Overall, good agreement was obtained between calculations and measurements, illustrating that the model is reliable and robust in simulating beach and dune evolution. However, the poststorm beach recovery in the swash zone could not be well captured by this model. Thus, in subsequent model development, onshore transport and accretion in the nearshore will be emphasized to simulate long-term beach evolution.</p>}},
  author       = {{Zhang, Jie and Larson, Magnus}},
  issn         = {{0749-0208}},
  keywords     = {{cross-shore transport; dune erosion; Myrtle Beach; Ocean City; Storms; SUPERTANK; wave impact theory}},
  language     = {{eng}},
  month        = {{07}},
  number       = {{4}},
  pages        = {{776--784}},
  publisher    = {{Coastal Education Research Foundation Inc.}},
  series       = {{Journal of Coastal Research}},
  title        = {{A Numerical Model to Simulate Beach and Dune Evolution}},
  url          = {{http://dx.doi.org/10.2112/JCOASTRES-D-21-00080.1}},
  doi          = {{10.2112/JCOASTRES-D-21-00080.1}},
  volume       = {{38}},
  year         = {{2022}},
}