ICCE 2016 Cover Image


submerged structure
hybrid shoreline model
artificial reef
coastal response

How to Cite

Kaergaard, K., Mortensen, S., Deigaard, R., Strauss, D., & Hunt, S. (2017). DETAILED SHORELINE MODELLING OF NARROWNECK ARTIFICIAL REEF, QUEENSLAND, AUSTRALIA. Coastal Engineering Proceedings, 1(35), sediment.33.


The MIKE 21 FM Shoreline Model was applied to predict the coastal response of an artificial reef constructed in the surf-zone at Narrowneck, Queensland, Australia. The construction of the reef began in 1999 and completed in 2000; it was constructed from geotextile sand bag; a portion of which broke during construction and the following period. The reef was maintained by addition of new sand bags until 2006. The coastal response from the reef was analyzed by integrating the beach volume between the height of the dune and the depth of closure using measured coastal profiles. The analysis showed that in the early days of the reef a clear salient in the beach volume was observed in the lee of the reef. This salient was smaller in 2006 and in later years, 2012 and 2013 it was no longer visible in the data. The MIKE 21 FM shoreline model was applied to reproduce the observed coastal response. It was found that the position of the longshore bar relative to the position of the reef is important for the predicted coastal response. By running the model using a subset of the measured coastal profiles from the site, the envelope of the predicted coastal response matches reasonably well with the measured response.


MIKE Powered by DHI (2016a). MIKE 21 FM ST, Sand Transport Module, User Guide.

Kaergaard, K., Fredsoe, J. 2013. A numerical shoreline model for shoreline with large curvature, Coastal Engineering, 74:19-32

Kristensen, S., Dronen, N., Deigaard, R. and Fredsoe, J. 2012. Hybrid morphological modelling of shoreline response to a detached breakwater, Coastal Engineering, 71:13-27

Ranasinghe and Turner (2006). Shoreline response to submerged structures: A review. Coastal Engineering, 53:65-79

Ruessink, G, Price, T and Castelle, B. 2013. Finite amplitude behaviour of alongshore variability in nearshore sand bars: Observations and modelling. Coastal Dynamics 2013 Arcachon, France

Authors retain copyright and grant the Proceedings right of first publication with the work simultaneously licensed under a Creative Commons Attribution License that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this Proceedings.