Authors / CoAuthors
Sanabria, L.A. | Thomas, C.M. | Cechet, R.P.
Abstract
Abstract: Severe wind is one of the major natural hazards affecting Australia. The main wind hazards contributing to economic loss in Australia are tropical cyclones, thunderstorms and mid-latitude storms. Geoscience Australia's Risk and Impact Analysis Group (RIAG) has developed mathematical models to study a number of natural hazards including wind hazard. In this paper, we describe a model to study 'combined' gust wind hazard produced by thunderstorm and mid-latitude or synoptic storms. The model is aimed at applications in regions where these two wind types dominate the hazard spectrum across all return periods (most of the Australian continent apart from the coastal region stretching north from about 27 degrees south). Each of these severe wind types is generated by different physical phenomena and poses a different hazard to the built environment. For these reasons, it is necessary to model them separately. The return period calculated for each wind type is then combined probabilistically to produce the combined gust wind return period, the indicator used to quantify severe wind hazard. The combined wind hazard model utilises climate-simulated wind speeds and hence it allows wind analysts to assess the impact of climate change on future wind hazard. It aims to study severe wind hazard in the non-cyclonic regions of Australia (region 'A', as defined in the Australian/NZ Wind Loading Standard, AS/NZS 1170.2:2002) which are dominated by thunderstorm and synoptic winds.
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nonGeographicDataset
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72059
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- GA PublicationConference Paper
- ( Theme )
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- geohazards
- 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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