Science-informed tsunami risk reduction in Western Australia  


Authors / CoAuthors

Kendall, D. | Davies, G. | Brannigan, A. | Gho, R. | Whitney, J. | Zanini, M. | Australian Institute for Disaster Resilience

Abstract

<div>An approach is presented to deriving onshore tsunami evacuation zones in Western Australia. The warning zones correspond to warning categories for distant earthquake tsunamis in the Joint Australian Tsunami Warning System. Onshore inundation hazards are computed by combining a detailed inundation modelled with earthquake-tsunami scenarios and rates from the 2018 Australian Probabilistic Tsunami Hazard Assessment. All modelled scenarios are assigned to JATWC warning categories and their onshore inundation extents are combined to produce preliminary maps, which are then limited to a very rare inundation event, and further manually adjusted to produce actionable evacuation zones. Although this procedure is conservative it leads to a large reduction in the size of the tsunami "land warning" evacuation zone compared to current advice. In the event of a land warning tsunami, this will enable better targeting of inundation prone areas by emergency services. <b>Citation:</b> Kendall, D., Davies, G., Brannigan, A., Gho, R., Whiney, J., Zanini, M.; Science-informed risk reduction for earthquake-generated tsunamis in Western Australia, Australian Journal of Emergency Management 39:4 - October 2024, p112-118.

Product Type

document

eCat Id

147991

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  Resource provider

 

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Commonwealth of Australia (Geoscience Australia)  
Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia

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Keywords

( Project )
  • Tsunami
( Project )
  • Emergency Management
( Project )
  • DFES
  • Tsunami
  • Evacuation
  • Emergency Management
theme.ANZRC Fields of Research.rdf
  • Earth system sciences
  • Published_External

Publication Date

2025-02-20T00:45:55

Creation Date

2023-05-31T16:00:00

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Australian Government Security Classification System    

Classification - unclassified

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Creative Commons Attribution 4.0 International Licence    

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Status

completed

Purpose

Paper to be submitted to Australian Journal of Emergency Management

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notPlanned

Topic Category

geoscientificInformation

Series Information

Australian Journal of Emergency Management AJEMS 39:4 October 2024 112-118

Lineage

<div>Paper drafted by GA and DFES staff based on work completed in the WA tsunami inundation modelling project. </div>

Parent Information

Extents

[-35.9857, -12.2943, 109.9865, 130.6585]

Reference System

Spatial Resolution

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