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Indian Ocean Tsunami 2004

Geog project

Ammaarah Faisal

on 12 February 2013

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Transcript of Indian Ocean Tsunami 2004

In 2004, on Sunday 26th December, early in the morning, a tsunami hit the west coast of Sumatra, Indonesia. It measured a 9.0 on the Richter scale, being the 3rd largest tsunami ever recorded in history. This tsunami has been given many different names: the Indian Ocean Tsunami, South Asian Tsunami, the Boxing Day Tsunami and the Indonesian Tsunami. The tsunami had the longest duration of faulting ever observed, it lasted between 8.3 and 10 minutes. It caused the whole planet to vibrate and shift slightly on its axis about 2.5 cm. It also triggered other earthquakes as far away as Alaska. It is said to have hit the coast three stories high in some areas. The coast of Sumatra was particularly thin, this made the damage of the tsunami even worse. The Boxing Day Tsunami
By Amber, Ammaarah, Hetty, Maisie, Annie and Millie The tsunami occurred at a destructive plate boundary. A subduction zone was involved, this is when two plates converge and one is pushed under the other. The plate that is pushed down thrusts back and causes the ripple. This particular tsunami lay under the sea and is called a mega-thrust earthquake. When the earthquake happened, a huge amount of water was displaced, trying to regain its equilibrium position. This sent shock waves off in all directions. Short-term effects of the earthquake:
1. In Indonesia, there was an estimated 167 799 people died, there were also 500 000 people missing or displaced.
2. There were a confirmed 35 322 deaths in Sri Lanka, and over 17 000 deaths in India and Thailand combined.
3. There was over millions of pounds in damage.
4. It left more than 1.7 million people homeless.
5. Tourism was severely affected and disease spread, e.g. cholera. The tsunami hit on the Indo-Australian plate, some 240km off the coast of Indonesia. It has huge effects, some long-term and some short-term.
1. The ocean floor was uplifted around 40m over a 1000km long area.
2. The Earth's rotation changed around 2.5cm.
3. The coastline of Banda Aceh, Indonesia changed.
4. In Indonesia, there was an estimated 167 799 people died, there were also 500 000 people missing or displaced.
5. There were a confirmed 35 322 deaths in Sri Lanka, and over 17 00 deaths in India and Thailand combined.
6. Severe damage was caused to schools, health facilities, houses, tourists resorts, boats and other fishing equipment, transport and communication, sanitation and water and electricity infrastructure.
7. It has left hundreds of people unemployed as the tsunami destroyed many boats and fishing equipment, it has also destroyed crops and livelihood and job opportunities.
8. 7% of the countries' population were living in shelter for months and even years. The four main villages on the coast, each of them home to 12 000 people, Tilly Smith Tilly Smith was a ten year old girl staying on holiday in Thailand with her sister and parents. On Decmber 26th she was on the beach with her family and recognised tsunami warning signs, she'd learned about in a geography lesson a couple of weeks ago. The sea was receeding and bubbles were appearing on the sea surface, she decribed 'like on top of a beer' She alerted her family, her mum didn't believe her but her dad and sister headed back back to the hotel and alerted the security guards, who evacuated the beach. Tilly's mom finally returned to the hotel just a few minutes before the tsunami struck. She is thought to have saved over 100 lives.
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