land use planning for tsunami – what are the options?land-use-planning-for-tsunami-what-ar… ·...

Land use planning for tsunami –

what are the options?

Wendy Saunders, MNZPI

GNS Science

Massey University

Joint Centre for Disaster Research

GNS Science

GNS Science

GNS Science

Are we at risk from tsunami?

GNS Science

Do we need to plan for tsunami?

• Health and safety – RMA s2

“promote the sustainable management of

natural and physical resources.

Sustainable management means managing

the use, development, and protection of

natural and physical resources in a way, or

at a rate, which enables people and

communities to provide for their social,

economic, and cultural wellbeing and for

their health and safety”

• Proposed NZCPS specifically

excludes tsunami, but still required

under RMA s30 & 31

GNS Science

What about uncertainty?

• Who takes on the risk?

• What is acceptable?

• What AEP/return

period?

• Debate needed

• Precautionary

approach

• Incorporate into design

• Need to ensure

communities and

visitors are aware of

the risks

GNS Science

How can we include tsunami risk in planning?

• Need to know what the risk is

• Map risk

• Include as a coastal hazard

• Incorporate into coastal hazard zones

• Cannot depend on response alone

• Formulate policy with a mix of readiness (EM) and reduction (planning)

• Ensure dune systems are retained

• Urban design

• Discuss options with your EMO

• Is a guidance note required?

GNS Science

1947 tsunami impacts, Wainui Source: Tairawhiti Museum, Gisborne

GNS Science

GNS Science

Gisborne case study

• High risk – 10m+ tsunami

recorded

• No official warnings

possible for local event

• Theoretical development

scenarios for coastal land

• Urban design – evacuation

and construction

• Modelling

• In progress …

GNS Science

GNS Science

GNS Science

GNS Science

Watch this space …

• Worked example of how tsunami can be incorporated into planning

– How modelling can influence planning

• Economic impacts / comparisons

• Planning implications

– Tsunami recognised as a hazard

– Options for inclusion

– Emergency management

• Urban design that includes tsunami

– Seabrook, Tora

GNS Science

Where to go for information

• MCDEM National

Tsunami Review

• Designing for

Tsunamis

• Quality Planning

Natural Hazard

Guidance Note

• GNS Science