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Extreme sea-level rise and adaptation options for coastal resort cities: a qualitative assessment from the Gold Coast, Australia

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Cooper, Andrew and Lemckert, Charles (2012) Extreme sea-level rise and adaptation options for coastal resort cities: a qualitative assessment from the Gold Coast, Australia. Ocean and Coastal Management, 64 . pp. 1-14. [Journal article]

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DOI: 10.1016/j.ocecoaman.2012.04.001

Abstract

The Gold Coast, Australia is a coastal resort city whose urban environment has evolved through a series of human interventions on the natural shoreline. Such cities rely on a perceived high quality environment which in turn is reliant on continuing maintenance (e.g. beach nourishment, inlet dredging, drainage). Climate change consequently holds particular challenges for coastal resort cities. Sea-level rise impacts are likely to be manifest in increased frequency of flooding and beach erosion episodes. Here we consider adaptation options for the city under various future sea-level rise (SLR) scenarios at the high end of current predictions for the next century (þ1 m, þ2 m and þ5 m) with the proviso that the beach and waterways must be preserved to enable the city to continue to exist as a resort.We conclude that pre-planned adaptation would probably enable the city to survive SLR of 1 m. An unplanned response to the same SLR would likely be characterised by periodic crises, growing uncertainty and public unease and would have marginal chances of success. For a 2 m SLR we contend that even with an adaptation plan in place, the scale of measures required would severely stretch the city’s resources. Under a 5 m SLR over the next century we do not believe that any amount of planning would enable the city to survive as a coastal resort. Any adaptation to SLR would involve increased cost to maintain the artificial coastal environment.Adaptation options are particularly constrained by the widespread development around the waterways of the back-barrier area. Unlike other coastal cities, resorts depend on a public perception of a high quality environment. Maintaining this perception under SLR imposes particular adaptation constraints on resort cities.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Environmental Sciences
Research Institutes and Groups:Environmental Sciences Research Institute
Environmental Sciences Research Institute > Coastal Systems
ID Code:22067
Deposited By:Professor Andrew Cooper
Deposited On:11 May 2012 11:35
Last Modified:11 May 2012 11:35

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