ALLIED MASK & TOOLING Decorative Tooling for the Finishing Industry.
Tooling Up to Design and Implement Tsunami Risk Reduction ...
Transcript of Tooling Up to Design and Implement Tsunami Risk Reduction ...
Tooling Up to Design and Implement
Tsunami Risk Reduction Strategies
Enda Murphy
Marine Infrastructure Research Engineer
Ocean, Coastal and River Engineering Research Centre
17 April 2018
Tsunami – Fight or Flight?
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Avoid
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• Restrict development in
high risk areas
• Community protection
schemes
• Early warning systems
• Evacuation plans
• Safe routes to high
ground
But is avoidance the only solution?
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James et al. (2014)
• 38% of Canadians live within 20km of
the coast (Manson, 2005)
• Many remote coastal communities
Foster et al. (2014)
Resist
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• Places of refuge (e.g.
vertical evacuation
structures)
• Structural strengthening
• Piled structures,
elevated living areas
• Scour protection
• Debris control
• Structural elements
(openings, breakaway
panels, mitigation walls,
tie-downs, redundancy)
• Dryproofing
• Maybe even floatation?
Build Resilience
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• Speedy return to service
• Construction techniques
• Materials
• Finishes
• Limit damage
• Preserve functionality of critical infrastructure
• Facilitate (or at least don’t impede!)
emergency response
Image source: Nyland and Nodelman (2017)
Repairability
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• Materials
• Water retention
• Salt resistance
• Drying times
• Preserve structural integrity
• Bio-hazards
• Minimize needs for demolition
during rebuilding
• Build back better
In summary – broaden our portfolio of responses
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Avoidance
Resistance
Resilience
Repairability
Strategies Implementation instruments
Residual
risk
Adapted from Bowker et
al. (2007)
Understanding the Hazard
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“Know your enemy…”
Zacharias Manuel de la Rocha (1991)
Tsunami Generation and Oceanic Propagation
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(aka the Far Field)
Propagation and Transformation in Coastal Waters
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(aka the Near Field)
Hazard Pathways, Wave Run-Up
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Loads and Effects
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Integrated Modelling Systems
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A word about uncertainty and inaction
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To do nothing is often the best course of action…
…but history was not made by those who did nothing.
One way to reduce uncertainty – more data
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More data needs
• Tsunami interactions with buildings and infrastructure
• Building and infrastructure vulnerability
• Test effectiveness of Resistance/Resilence/Repairability measures
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Need for practical, useful tools
• Enhanced national hazard assessment – learn from
mapping for ASCE 7-16
• Guidelines, codes and standards
• Improved communication tools (probably web-
based)
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