Authors / CoAuthors
Cechet, R.P. | Arthur, W.C. | Divi, C.B. | Dunford, M.A. | Sanabria, L.A. | Thomas, C.M. | Wehner, M. | Yang, T.
Abstract
We have applied new modelling and analysis techniques to develop a revised understanding of the regional wind hazard across Australia.0 This modelling has enabled the development of a wind hazard map for the Australian region. Regional wind hazard has been assessed by utilising statistical-parametric models, dynamical downscaling and spatial interpolation techniques allowing the derivation of estimates of wind hazard from three different phenomena - tropical cyclones, thunderstorms and synoptic storms. Across much of the interior of the country, the revised estimates of regional wind speeds are comparable to the regional wind speeds specified in the existing Australian - New Zealand wind loading standard (AS/NZS 1170.2 2010), generally to within 10 percent for the design wind speeds (500-year return period gust wind hazard). The regional wind speeds derived in AS/NZS 1170.2 were determined from analysis of long-term records (observations) of daily maximum gust wind speeds. A preliminary assessment of wind risk for the four case study regions, utilising the new modelled hazard methodology as well as the climate simulations, indicated little change in the hazard during the 21st century and therefore little or no change to the wind risk associated with the current residential building stock. When population projections were utilised to infer increased number of buildings (all built to the present standard), the proportion of legacy buildings within the building population declined resulting in a decline in wind risk.
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nonGeographicDataset
eCat Id
72970
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- GA Publication
- ( Theme )
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- risk assessment
- Australian and New Zealand Standard Research Classification (ANZSRC)
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- Earth Sciences
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- Published_Internal
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2011-01-01T00:00:00
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