Berm formation and dynamics on a gently sloping beach; the effect of water level and swash overtopping

Jensen, Stine G., Aagaard, Troels, Baldock, Tom E., Kroon, Aart and Hughes, Michael (2009) Berm formation and dynamics on a gently sloping beach; the effect of water level and swash overtopping. Earth Surface Processes And Landforms, 34 11: 1533-1546. doi:10.1002/esp.1845

Author Jensen, Stine G.
Aagaard, Troels
Baldock, Tom E.
Kroon, Aart
Hughes, Michael
Title Berm formation and dynamics on a gently sloping beach; the effect of water level and swash overtopping
Journal name Earth Surface Processes And Landforms   Check publisher's open access policy
ISSN 0197-9337
Publication date 2009-09-15
Year available 2009
Sub-type Article (original research)
DOI 10.1002/esp.1845
Volume 34
Issue 11
Start page 1533
End page 1546
Total pages 14
Place of publication Chichester, United Kingdom
Publisher John Wiley & Son
Collection year 2010
Language eng
Subject 960902 Coastal and Estuarine Land Management
0905 Civil Engineering
Abstract Berm formation and morphological development of the beach face have been observed during a neap-neap tidal cycle on the gently sloping and accreting beach at Vejers, Denmark. During the field campaign, an intertidal bar migrated onshore and stabilized as a berm on the foreshore. A new intertidal bar occurred on the lower beach face, migrated onshore on the rising tide and finally merged with the pre-existing berm. As the tide continued to rise, the new berm translated further onshore as an intertidal bar to the uppermost part of the foreshore. The sediment transport during the berm transition was onshore directed in the upper swash and offshore directed in the lower swash. This berm development can be described through both the neap-berm, ridge-and-runnel and berm-ridge development concepts proposed by Hine (Sedimentology 1979; 26: 333-351), and all three stages were observed during only three tidal cycles. The main factors controlling this fast transformation were the gentle slope of the cross-shore profile, rapid water level translation rates, substantial swash overtopping of the berm, and low infiltration rates. Despite the onshore migration of intertidal bars and berm formation, no net foreshore accretion took place during the field campaign. This was largely due to the formation of rip channels with strong rip currents cutting through the intertidal bars and the berm, which acted as a sediment drain in the profile.
Keyword Beach slope
Berm development
Foreshore processes
Swash overtopping
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Article first published online: 1 July 2009

Document type: Journal Article
Sub-type: Article (original research)
Collections: 2010 Higher Education Research Data Collection
School of Civil Engineering Publications
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Citation counts: TR Web of Science Citation Count  Cited 7 times in Thomson Reuters Web of Science Article | Citations
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Created: Fri, 23 Apr 2010, 11:33:08 EST by Katherine Montagu on behalf of School of Civil Engineering