Developments in storm tide modelling and risk assessment in the Australian region |
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| Authors: | Bruce Harper Thomas Hardy Luciano Mason Ross Fryar |
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| Institution: | (1) Systems Engineering Australia Pty Ltd, Bridgeman Downs, QLD, Australia;(2) Australian Maritime College, Launceston, TAS, Australia;(3) GHD Pty Ltd, Brisbane, QLD, Australia |
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| Abstract: | An overview is provided of some of the significant storm tide modelling and risk assessment studies undertaken over the past
few years within Australia and the nearby oceanic regions for government and industry. Emphasis is placed on the need for
integrated planning and forecasting approaches for storm tide risk assessment. The importance of the meteorological forcing
and the appropriate modelling of each of the storm tide components, namely, astronomical tide, storm surge, breaking wave
setup and coastal inundation is discussed. The critical role of tropical cyclone “best track” datasets for risk assessment
studies and the potential impacts on design criteria and risk assessment studies is highlighted, together with the challenge
of developing credible enhanced-greenhouse climate change scenarios. It is concluded that storm tide modelling needs to be
undertaken in a holistic framework that considers the relative uncertainties in each of the various elements—atmospheric,
hydrodynamic and data, as well as addressing operational forecasting, design and planning needs. |
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