Guideline - Department of Housing and Public Works - Queensland ...

More documents

Recommendations

Info

Step 2: Likelihood of inundation Estimate the storm tide level for events with annual exceedance probabilities of: 1/50, 1/100, 1/500, 1/1,000, 1/5,000 and 1/10,000 The relationship between storm tide height and probability of occurrence is determined by detailed numerical modelling of coastal bathymetry and cyclone characteristics. The results of various studies were summarised by Harper (35) in 1998 for 82 locations along Queensland’s east coast. In 2003 Harper et al (29) revised the estimates for 50 locations and investigated the effects of various Greenhouse scenarios on the storm tide height. The results of the most recent study, based upon current climate should be used in this study. For the purpose of this study storm tide height predictions may be interpolated from a smooth curve of storm tide height plotted against the logarithm of the annual exceedance probability. Storm surge model - Hervey Bay Photograph courtesy of the Queensland Government, Environmental Protection Agency 14 | Disaster Management Planning Guideline Mitigating the Adverse Impacts of Cyclone – Evacuation and Shelter
Example Storm tide inundation Likelihood of inundation Step 2 Table 1: Likelihood of inundation Annual exceedance probability Storm tide height (m AHD) 1/10,000 4.7 1/5,000 4.5 1/1,000 3.7 1/500 3.3 1/100 2.6 1/50 2.2 Estimated storm tide probabilities and levels are based on studies reported by Harper (35) and updated by Harper et al (29) . Figure 4: Storm tide inundation Event Levels Probability 7 6 5 4 3 2 1 4.5m AHD 4m AHD 3.5m AHD 3m AHD 2.5m AHD 2m AHD HAT 1/10,000 4.7m AHD 1/5,000 4.5m AHD 1/1,000 3.7m AHD 1/500 3.3m AHD 1/100 2.6m AHD 1/50 2.2m AHD This figure shows that inundation to 2.6m AHD, an Event 3, has a probability of occurring once in 100 years. Storm tide damage in Mackay - January 1918 Disaster Management Planning Guideline Mitigating the Adverse Impacts of Cyclone – Evacuation and Shelter | 15
Page 1 and 2: Guideline Disaster Management Act 2
Page 3 and 4: Foreword Recent experience has demo
Page 5 and 6: Table of contents 1. Purpose of the
Page 7 and 8: 4. The need to mitigate the adverse
Page 9 and 10: The community’s demographics, exp
Page 11 and 12: Example Communicate and consult Com
Page 13 and 14: Example Analyse risks Risks to the
Page 15: Example Storm tide inundation Storm
Page 19 and 20: Example Storm tide inundation Likel
Page 21 and 22: Storm tide event inundation areas S
Page 23 and 24: Cyclone damage in Innisfail - March
Page 25 and 26: Example Ability to evacuate Evacuat
Page 27 and 28: Example Ability to evacuate Table 4
Page 29 and 30: Example Ability to evacuate Figure
Page 31 and 32: Example Ability to evacuate Figure
Page 33 and 34: Example Wind resistance of housing
Page 35 and 36: Example Ability to shelter Shelter
Page 37 and 38: Example Ability to shelter Table 8:
Page 39 and 40: Wind resistance of housing The stru
Page 41 and 42: Example Evaluate risks Wind resista
Page 43 and 44: Example Treat Risks - mitigation Th
Page 45 and 46: Innisfail State High School built i
Page 47 and 48: Rescue Area: A location from which
Page 49 and 50: Table B2: Importance levels of buil
Page 51 and 52: The design gust wind speed for an i
Page 53 and 54: Extracts from South Carolina Hurric
Page 55 and 56: (23) National Hurricane Preparednes
Page 57 and 58: Notes Disaster Management Planning

Guideline - Department of Housing and Public Works - Queensland ...

Create successful ePaper yourself

Delete template?

Save as template?