Essay about The Quake Earthquake And Tsunami

Essay about The Quake Earthquake And Tsunami

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1. INTRODUCTION
1.1 The Tohoku Earthquake and Tsunami

On March, 11, 2011, a megathrust earthquake of 9.0 on the moment magnitude scale occurred at approximately 70 km away from the nation of Japan.1 This earthquake was the fourth most powerful ever recorded in Earth’s history and, among other things, resulting in approximately 400 metres of Japan’s coast subsiding 0.6 m.2 The undersea earthquake resulted in a tsunami, that had waves estimated to be up to 40 metres in height. The waves of the tsunami were able to travel approximately 10 kilometres on land, in the Sendai area.3 The tsunami affected a large area along the Pacific coast and over 20 countries issued tsunami warnings.4 The main earthquake, tsunami and aftershocks led to damage to nearly 190,000 buildings in Japan.5 This event had grave implications for Japan on an economic, social and health scale.



1.2 Megathrust Earthquakes
A megathrust earthquake is one that takes place along the boundary of two tectonic plates. These earthquakes occurs at convergent boundaries and results from one plate being subducted by another. These earthquakes are the most powerful types of earthquakes. All recorded earthquakes that have exceeded 9.0 magnitude are megathrust earthquakes. Megathrust earthquakes are associated with the subductions zones around the Pacific and Indian Oceans. These earthquakes often lead to the deformation of the ocean floor and are associated with the generation of tsunamis.

1.3 Tsunami
A tsunami is a series of waves that occur due to the displacement of a substantial volume of water. Tsunamis are triggered by large scale disturbances of bodies of water and this can be caused by hazards such as earthquakes, landslides, meteorites or explosions. A tsunami...


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...crease in patients admitted for pneumonia and deaths among all age groups. Evacuees are at a significant risk of picking up infections and preventative measures post catastrophic events are paramount to citizen survival.

4. Conclusion
The Tohoku earthquake was one of the most powerful earthquakes in history and lead to severe damage to Japan. It affected the country by taking lives, destroying buildings and infrastructure and inhibited economic growth. This catastrophe was compounded by the Fukushima Nuclear Plant accident, which further worsened the conditions in Japan. The Fukushima accident is one of the worst nuclear accidents in history and could pose to risk to long term health. After the Tohoku Earthquake, hospital admissions, as well as death from infections were increased. This demonstrates the impact these events can have on the health of the citizens.

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