Projects per year
A laboratory experiment was conducted to investigate how a bimodal spectrum of high-frequency (sea-swell) and low-frequency (infragravity and seiching) waves affect the shape of a shoreline profile adjacent to a reef. The experiments were conducted in a 55 m wave flume, using a 1:15 scale fringing reef model that had a 1:5 forereef slope, a 14 m long reef flat, and a 1:12 sloping beach. The initial 7 m of reef flat had a fixed bed, whereas the back 7 m of the reef and the beach had a moveable sandy bed. Two irregular wave cases (low and high still water levels) were considered. In the physical model, the shoreline profile erodes and steepens to a slope of 1:7-1:8 and a berm forms above the mean water level. Numerical modelling using XBeach in non-hydrostatic and surf beat modes approximately reproduced the shoreline profile. Neither modelling mode reproduced the development of the berm, both over-estimated the sediment deposition on the bed. Further evaluation of processes responsible for sediment transport and shoreline development in reef environments, as well as how to numerically describe these processes, is required.
|Title of host publication||Australasian Coasts and Ports 2019 Conference: Future directions from 40 [degrees] S and beyond, Hobart, 10-13 September 2019|
|Place of Publication||Australia|
|Number of pages||7|
|Publication status||Published - 2019|
|Event||Australasian Coasts and Ports 2019 Conference - Hobart, Australia|
Duration: 10 Sep 2019 → 13 Sep 2019
|Conference||Australasian Coasts and Ports 2019 Conference|
|Period||10/09/19 → 13/09/19|
Lowe, R., Roelvink, J. & van Dongeren, A.
1/01/14 → 31/07/17
Physical Processes in Complex Coastal reef Environments: the Dynamics of Wave- and Tide-dominated Systems
1/01/11 → 30/04/16