Boxing Tsunami Case Study
Joseph Ritchie
2004 Boxing Day Tsunami 1. Explain the causes of the 2004 boxing day Tsunami (6)
A Tsunami forms when energy from an earthquake vertically jolts the seabed by several metres, displacing hundreds of cubic kilometres of water. Large waves begin moving through the ocean, away from the earthquakes epicentre. In deep water the Tsunami moves at great speeds. When it reaches shallow water near coastal areas, the Tsunami slows but increases in height.
Before the Boxing Day Tsunami in 2004 the waterline suddenly retreated exposing hundreds of metres of beach and sea bed. The several waves of the Tsunami came of intervals of between 5 and 20 minutes.
Tsunamis occur when * The earthquake measures more than 6.5 on the Richter scale * The earthquakes focus is shallow beneath the earth’s surface * The focus is also beneath the ocean
The Boxing Day Tsunami was estimated between 9.0 and 9.3 on the Richter scale, the trust heaved the floor of the Indian Ocean towards Indonesia by about 15 metres and sent shock waves. Theses shock waves radiated out in a series of ripples moving unnoticed across oceans until they hit land. The longer and shallower the approach the more the ripples built up height. The waves that struck the shallow coastline near Banda Aceh and parts of Sri Lanka were nearly 17 metres high on impact. Islands in the Maldives a four meter high sea swell rather than a crashing wall of water.
2. The distribution of missing or dead
1. Write a description for this graph and suggest reasons for the pattern shown (6)
The graph above shows the number of deaths caused by the 2004 Tsunami and the number of people missing as a result of the Tsunami in all of the twelve e countries affected.
Indonesia was affected badly as some areas of the country such as Western Sumatra are close to the earthquakes epicentre and it is a well-populated area, up to 70% of some coastal populations were killed or missing and up to 400,000 people
2004 Boxing Day Tsunami 1. Explain the causes of the 2004 boxing day Tsunami (6)
A Tsunami forms when energy from an earthquake vertically jolts the seabed by several metres, displacing hundreds of cubic kilometres of water. Large waves begin moving through the ocean, away from the earthquakes epicentre. In deep water the Tsunami moves at great speeds. When it reaches shallow water near coastal areas, the Tsunami slows but increases in height.
Before the Boxing Day Tsunami in 2004 the waterline suddenly retreated exposing hundreds of metres of beach and sea bed. The several waves of the Tsunami came of intervals of between 5 and 20 minutes.
Tsunamis occur when * The earthquake measures more than 6.5 on the Richter scale * The earthquakes focus is shallow beneath the earth’s surface * The focus is also beneath the ocean
The Boxing Day Tsunami was estimated between 9.0 and 9.3 on the Richter scale, the trust heaved the floor of the Indian Ocean towards Indonesia by about 15 metres and sent shock waves. Theses shock waves radiated out in a series of ripples moving unnoticed across oceans until they hit land. The longer and shallower the approach the more the ripples built up height. The waves that struck the shallow coastline near Banda Aceh and parts of Sri Lanka were nearly 17 metres high on impact. Islands in the Maldives a four meter high sea swell rather than a crashing wall of water.
2. The distribution of missing or dead
1. Write a description for this graph and suggest reasons for the pattern shown (6)
The graph above shows the number of deaths caused by the 2004 Tsunami and the number of people missing as a result of the Tsunami in all of the twelve e countries affected.
Indonesia was affected badly as some areas of the country such as Western Sumatra are close to the earthquakes epicentre and it is a well-populated area, up to 70% of some coastal populations were killed or missing and up to 400,000 people