dc.contributor.author |
Smith, GG
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en_US |
dc.contributor.author |
Mocke, GP
|
en_US |
dc.date.accessioned |
2007-02-06T09:04:24Z |
en_US |
dc.date.accessioned |
2007-06-07T10:08:41Z |
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dc.date.available |
2007-02-06T09:04:24Z |
en_US |
dc.date.available |
2007-06-07T10:08:41Z |
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dc.date.copyright |
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en_US |
dc.date.issued |
2002-07-30 |
en_US |
dc.identifier.citation |
Smith, GG and Mocke, GP. 2002. Interaction between breaking/broken waves and infragravity-scale phenomena to control sediment suspension transport in the surf zone. Marine Geology, vol. 187, 04 March, pp 329-345 |
en_US |
dc.identifier.issn |
0025-3227 |
en_US |
dc.identifier.uri |
http://hdl.handle.net/10204/1492
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en_US |
dc.identifier.uri |
http://hdl.handle.net/10204/1492
|
|
dc.description.sponsorship |
Time series of near-bed sediment, water-level and velocity were measured in the field and laboratory and analysed to investigate (a) the role of breaking/broken waves, (b) the predominance of infragravity-scale transport processes in the surf zone, and (c) the influence of infragravity processes in creating the right conditions for suspension by breaking/broken waves. Instantaneous suspended sediment concentrations were measured using optical backscatter sensors, which were found to be sensitive to sediment size, cohesive sediment in suspension and bubbles. A simple numerical filter was applied to remove the erroneous bubble signal. Suspension was found to be correlated with wave breaker bores and an associated increase in high-frequency velocities, the latter deemed to be caused by surface-generated turbulence. Infragravity-scale sediment transport flux was found to be more significant than incident-scale flux in the transition and inner surf zones. Sediment suspension was further found to be related to the onset of lower water-levels associated with infragravity wave action, which corresponded with a predominance of breaking/broken waves. These breaking/broken waves (which are induced by the low water-level) are deemed to be the cause of this suspension. |
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dc.format.extent |
551885 bytes |
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dc.format.mimetype |
application/pdf |
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dc.language.iso |
en |
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dc.publisher |
Elsevier Science BV |
en_US |
dc.rights |
Copyright: 2002 Elsevier Science BV |
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dc.source |
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en_US |
dc.subject |
Wave breaker turbulence |
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dc.subject |
Surf zones |
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dc.subject |
Sediment suspension |
en_US |
dc.subject |
Optical backscatter sensor |
en_US |
dc.subject |
Sediment transport |
en_US |
dc.title |
Interaction between breaking/broken waves and infragravity-scale phenomena to control sediment suspension transport in the surf zone |
en_US |
dc.type |
Article |
en_US |
dc.identifier.apacitation |
Smith, G., & Mocke, G. (2002). Interaction between breaking/broken waves and infragravity-scale phenomena to control sediment suspension transport in the surf zone. http://hdl.handle.net/10204/1492 |
en_ZA |
dc.identifier.chicagocitation |
Smith, GG, and GP Mocke "Interaction between breaking/broken waves and infragravity-scale phenomena to control sediment suspension transport in the surf zone." (2002) http://hdl.handle.net/10204/1492 |
en_ZA |
dc.identifier.vancouvercitation |
Smith G, Mocke G. Interaction between breaking/broken waves and infragravity-scale phenomena to control sediment suspension transport in the surf zone. 2002; http://hdl.handle.net/10204/1492. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Smith, GG
AU - Mocke, GP
DA - 2002-07-30
DB - ResearchSpace
DP - CSIR
KW - Wave breaker turbulence
KW - Surf zones
KW - Sediment suspension
KW - Optical backscatter sensor
KW - Sediment transport
LK - https://researchspace.csir.co.za
PY - 2002
SM - 0025-3227
T1 - Interaction between breaking/broken waves and infragravity-scale phenomena to control sediment suspension transport in the surf zone
TI - Interaction between breaking/broken waves and infragravity-scale phenomena to control sediment suspension transport in the surf zone
UR - http://hdl.handle.net/10204/1492
ER -
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en_ZA |