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- Title
Textbook dune: Is there a representative and scale‐invariant beach‐dune profile?
- Authors
Houser, Chris; Smith, Alex; Lunardi, Brianna; George, Elizabeth; Lehner, Jacob
- Abstract
The Coastal Dune Model, used to examine controls on dune development and evolution, includes negative feedback between the wind and the evolving topography that results in a scale‐invariant beach‐dune profile. While a limited number of reference profiles appear to support the Coastal Dune Model assumption of scale‐invariance, previously published studies and conceptual models suggest that the beach‐dune profile is not scale‐invariant. Using a combination of journal articles, textbooks, and remotely sensed data from Prince Edward Island, Washington state, and Texas, this short communication finds that there is no evidence for a scale‐invariant beach‐dune profile within and between field sites. Variability in the beach‐dune profile is due to site‐specific and scale‐dependent controls on the beach and the dune that are often highlighted in the conceptual models that authors use to depict the controls on sediment supply and transport from the beach to the dune. Results highlight a need to critically evaluate the assumptions and applications of models such as the Coastal Dune Model, and to explore how and when sites can be considered representative and in support of model results. Key Messages: There is no scale‐invariant beach‐dune profile as assumed in recent models.Beach‐dune profiles vary in response to site‐specific and scale‐dependent controls on sediment supply and transport.Further study is required to determine how and when sites can be considered representative.
- Subjects
PRINCE Edward Island; WASHINGTON (State); TEXAS; SAND dunes; BEACHES; SEDIMENT control; SEDIMENT transport; CONCEPTUAL models; TEXTBOOKS
- Publication
Canadian Geographer, 2022, Vol 66, Issue 4, p783
- ISSN
0008-3658
- Publication type
Article
- DOI
10.1111/cag.12792