2021-10-08 SM - Item 1 - Attachment 2 - Draft Coastal Hazards Adaptation Plan - tracked changes

defensive measures include sea walls, breakwaters, storm tide barriers; and ‘soft’ defensive
measures include beach nourishment, dune management and restoration.

Resilience: The capacity of social, economic, and environmental systems to cope with a
hazardous event, trend, or disturbance, responding or reorganising in ways that maintain their
essential function, identity, and structure, while also maintaining the capacity for adaptation,
learning, and transformation.

Retreat15: An adaptation approach which involves the planned or managed withdrawal of assets
from hazard-prone areas of the coast. This may involve relocating or abandoning assets in high
risk areas, preventing development in coastal areas, and allowing development to take place on
the condition that it will be abandoned if necessary. Planned or managed retreat involves the
implementation of thresholds or triggers (e.g. seas encroach within predetermined distance of
infrastructure) which activate the policy.

Sea-level rise: The rise of global and local mean sea level caused by the expansion of the ocean
as it warms, and the transfer of water currently stored on land to the ocean, particularly from
melting glaciers and ice sheets. Sea levels are projected to rise disproportionally on a global scale
with regions closest to the equator seeing more rapid and extreme changes. Church et al., 2011a
https://www.ipcc.ch/site/assets/uploads/2018/02/WG1AR5_Chapter13_FINAL.pdf

Trigger point (or triggers): A decision-point which initiates adaptive actions before coastal hazards
reach an adaptation-threshold beyond which undue harm occurs and costs of adaptation increase.
Triggers are preceded by signals that provide an early warning of the emergence of the trigger.




Noosa Council – Coastal Hazards Adaptation Plan 2020 - 2030                                   Page 74