| Title: |
Can we reliably estimate dune erosion without knowing pre-storm bathymetry? |
| Authors: |
Splinter, KD; Strauss, D; Tomlinson, RB |
| Publisher Information: |
Engineers Australia |
| Publication Year: |
2011 |
| Collection: |
Griffith University: Griffith Research Online |
| Subject Terms: |
Oceanography not elsewhere classified; Civil engineering not elsewhere classified |
| Subject Geographic: |
Perth; Australia |
| Time: |
2011-06-26 to 2011-07-01 |
| Description: |
Pre-storm bathymetry is a required boundary condition for processed-based dune erosion models but is often out of date, extremely coarse resolution, or in the worst case, non-existent. Despite these limitations, coastal engineers and managers are being called upon to provide estimates of dune erosion to vulnerable coastal communities in light of changes in storm conditions and longer term climate projections. Here we calibrate and then use a state of the art dune erosion model (XBeach) to predict a range of possible erosion volumes for the May 2009 East Coast Low that impacted the Gold Coast, Australia. Using pre-storm bathymetry surveys the model required minimal calibration. Predicted erosion volumes, as well as shoreline retreat were in good agreement with observations. To account for errors in nearshore bathymetry, the suite of available surveys was used to estimate a range of erosion volumes. The model results were relatively insensitive to the range of available bathymetry. Milder sloping and terraced/barred profiles resulted in less dune erosion, while steeper foreshores and non-barred profiles were more vulnerable. ; Griffith Sciences, Griffith School of Environment ; Full Text |
| Document Type: |
conference object |
| File Description: |
application/pdf |
| Language: |
English |
| ISBN: |
978-1-62276-430-3; 1-62276-430-7 |
| Relation: |
20th Australasian Coastal and Ocean Engineering Conference 2011 and the 13th Australasian Port and Harbour Conference 2011, COASTS and PORTS 2011; Coasts and Ports 2011; http://www.coastsandports2011.com.au/index.php; https://hdl.handle.net/10072/46588 |
| Availability: |
https://hdl.handle.net/10072/46588 |
| Rights: |
© The Author(s) 2011. The attached file is reproduced here in accordance with the copyright policy of the publisher. For information about this conference please refer to the conference’s website or contact the authors. ; open access |
| Accession Number: |
edsbas.8871FF58 |
| Database: |
BASE |