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Tsunamis

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Home / Natural hazards / Tsunamis

A tsunami is a series of powerful waves caused by a sudden movement of the sea or lake floor, or by something falling into water - like the ripples created when a stone is thrown into a pond, but bigger.

Most tsunamis are caused by underwater earthquakes, but they can also be caused by volcanic eruptions or underwater landslides.

Tsunami evacuation zones and warnings

Tsunami evacuation zones show the areas that you should move out of if you feel a long or strong earthquake, or if there is an official tsunami warning.

Canterbury's tsunami hazard

A tsunami is a series of waves that move through the ocean (or a lake) caused by a sudden movement of the sea floor or by something falling into the ocean.

Mackenzie Basin lake tsunamis

Tsunamis only happen in the ocean, right? Actually, tsunamis can happen on lakes too.

  • See Canterbury’s tsunami evacuation zones
  • Go to the GeoNet tsunami gauges 
  • Go to the Pacific Tsunami Warning Center
  • Go to the New Zealand Palaeotsunami database
Natural hazards

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Environment Canterbury © 2021
Retrieved: 3:47am, Tue 19 Jan 2021
https://www.ecan.govt.nz/your-region/your-environment/natural-hazards/tsunamis/