indonesia tsunami Flashcards
(19 cards)
where do 90% of tsunamis occur
along the Pacific ring of fire
what is the first sign of a tsunami if there is no warning system
drainage of the sea
where is there no warning system
indian ocean
where is the pacific ocean warning system
in Hawaii
how many people were forced to be in refugee camps after the tsunami
500,000
what economies were destroyed
fishing
agriculture
tourism
3 long term impacts from the Boxing Day tsunami
500,000 forced to reuse camps
economies destroyed - fishing , agriculture and tourism
water supplies contaminated with salt water
short term impacts from the Boxing Day tsunami
300,000 people died
vegetation removed up to 800m inland
jetties destroyed I islands completely isolated
coastal settlements destroyed
how far inland did vegetation get destroyed
800m
what was the magnitude of the ear quake at sea causing the tsunami
9-9.3
when was the tsunami
26th December 2004
what has been put in place for next time
more education in schools
practise drills in schools and work places
UN set up a tsunami warning system in the indian ocean
how big was the displacement at sea
15 m
how many countries were effected by the Boxing Day tsunami
15
characteristics of a tsunami wave
long wave length - up to 100km - 1000km
wave speed up to 700km/h
wave height can be up to 1m in deep water but can reach unto 25m in shallow water
10-60 mins between waves
what are the main causes of a tsunami
seismic activity
massive landslide
submarine volcanic erruptions
what happens when a wave reaches the shore
wave will slow down and pile up into a massive wall of water
how much displacement was there at sea to cause the Boxing Day tsunami
15 m vertical displacement of 1600km of sea bed
