Authors / CoAuthors
Davies, G.
Abstract
Australia's coastline is exposed to tsunamis generated by large subduction earthquakes in the Indian and Pacific Oceans. While recent events had limited impacts in Australia, future earthquakes could in-principle direct much larger waves to our coast. With only a few hours between earthquake detection and tsunami arrival, prior planning is necessary to guide the emergency response. To this end we need an understanding of tsunami hazards: which coastal areas might be inundated, how deep, and how likely? This talk will discuss recent progress in tsunami inundation hazard assessment at Geoscience Australia. We adopt a probabilistic approach to the problem, which involves modelling hypothetical earthquake-tsunamis from major Indian and Pacific Ocean sources, their effects onshore, and their (uncertain) chance of occurrence. To illuminate the science underlying this we will consider: 1. How well tsunami models can simulate historical tsunamis; 2. Representations of hypothetical tsunamis and their natural variability; 3. New techniques to compute onshore hazards while accounting for uncertain earthquake frequencies.
Product Type
document
eCat Id
148816
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Cnr Jerrabomberra Ave and Hindmarsh Dr GPO Box 378
Canberra
ACT
2601
Australia
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Keywords
- theme.ANZRC Fields of Research.rdf
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- EARTH SCIENCES
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- Wednesday Seminar
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- tsunamis
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- geological hazards
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- Published_External
Publication Date
2024-05-13T08:07:44
Creation Date
2023-11-23T00:00:00
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Status
completed
Purpose
To promote the scientific achievements of Geoscience Australia.
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asNeeded
Topic Category
geoscientificInformation
Series Information
Wednesday Seminar
Lineage
Seminar recording as part of the Geoscience Australia public talks programs
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Extents
[-44.00, -9.00, 112.00, 154.00]
Reference System
Spatial Resolution
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Associations
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