1. TSUNAMIS A tsunami is a series of waves in a body of water caused by the displacement of a large volume of water, generally in an ocean or a large lake.

2. CAUSES  75% caused by earthquakes  8% caused by underwater landslides.  5% caused by volcanic eruption.

3. MECHANISM

4. EFFECTS 2004 Indian Ocean tsunami

5. HIGH RISK MAP

6. Planning Strategies to Reduce Tsunami Effects  Avoid Inundation Areas  Slow Water  Steering  Blocking

7. PREDICTION  Geoscience Australia  PTWC and ATWC  Buoys and tide gauges  Y. Tony Song’s prototype  DART

8. HOW TO REACT  Tsunami Watch: Make preparations and stand by for further updates.  Tsunami Warning – Marine Threat: Get out of the water, secure boats and move away from beaches, marinas, estuaries and rock platforms.  Tsunami Warning – Land Threat: If your area is advised to be under threat, move to higher ground -10 m above sea level or 1k m inland.  Cancellation:Even though the tsunami warning has been cancelled, unusual rips, tides and currents may persist. Emergency services will advise the 'All Clear' when it is safe to return.