Earthquake occurred at 7:58 local time on 26th December 2004
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What was the magnitude of the earthquake?
9.1
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Where was the epicentre?
100km off the coast of sumatra
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How deep was the focus?
approx 20km
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What countries were worst affected?
Indonesia, Thailand, Sri Lanka, The Maldives and The Andaman Islands
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How many after shocks?
84
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What type of plate margin and which plates?
Destructive and indo-austrailian plate (subducted) and the eurasion
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What were the primary impacts?
290,000 killed across 14 countries, veg and soil removed up to 800m inland, 5 million made homeless, infrastructure destroyed, Tailand - 1,700 tourists killed, post traumatic stress
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What were the secondary impacts?
widespread homelessness, economies destroyed (fishing, agriculture and tourism), Tailand cost to fishing -$226 mill, water supplies filled with salt water, diseases such as cholera, diphtheria and Hepatitis A and B spread through water + malaria
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Immediate response?
international relief efforts involving 160 aid organ + Un agencies, military troops provided assistance, $14 billion sent in aid, world food prog - provided food for 1.3 mill people, dug mass graves to stop spread of disease,
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What were the longer term responses?
reconstruction progs implemented but thousands still in tents, political barriers stopped aid distribution, toursits resorts rebuilt, set up tsunami warning system, education dev, evac plans made, coastal zones mapped for risk
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The UN set up the indian ocean warning system, what is this?
Sign posted evacuation routes to higher ground, Warning signs if the area is considered ‘high risk’, Evacuation shelters on higher ground where there is access to clean water, food and medicines.
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What did they add to the sea bed to make tsunamis easier to predict?
sensors on the sea bed which will send a signal to the buoys on the surface if there is a movement, which then transmits a signal via satellites to data centres where the information can be sent to the appropriate people giving countries time to evac
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