We now know that the catastrophe of December 26,was one of the greatest natural disasters in history. The tsunami that ripped through the Indian Ocean stole more thanlives and left thousands more injured, homeless, orphaned, and desperate. What we don't yet know are the long-term threats to public health that the tsunami will leave in its wake.
A tsunami is a huge wave which is caused by volcanic or earthquake activity under the ocean which eventually reaches the coast and creates devastating impacts. For this section of the unit you need to know a case study of one tsunami event and its causes, effects and responses. You will have to know about the Boxing Day tsunami.
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This caused the Indian Ocean tsunami that affected 13 countries and killed approximatelypeople. This tsunami was particularly devastating because:. Non-Governmental Organisations NGOs and local authorities typically have immediate and secondary responses to devastation of this kind.
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The effects of a tsunami are devastating. They are one of the world's worst natural disasters that can hit a country. Tsunami damage is first caused by the immense force of the tidal wave hitting the shoreline.
Indonesia was the first country to be seriously affected by the earthquake and tsunami created by the Indian Ocean earthquake on 26 Decemberswamping the northern and western coastal areas of Sumatraand the smaller outlying islands off Sumatra. Nearly all the casualties and damage took place within the province of Aceh. The time of arrival of the tsunami was between 15 and 30 minutes after the deadly earthquake.
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The effects of a tsunami on a coastline can range from unnoticeable to devastating. The effects of a tsunami depend on the characteristics of the seismic event that generated the tsunami, the distance from its point of origin, its size magnitude and, at last, the configuration of the bathymetry that is the depth of water in oceans along the coast that the tsunami is approaching. Small tsunamis, non-destructive and undetectable without specialized equipment, happen almost every day as a result of minor earthquakes and other events.
Anja Scheffers does not work for, consult, own shares in or receive funding from any company or organisation that would benefit from this article, and has disclosed no relevant affiliations beyond their academic appointment. Republish our articles for free, online or in print, under Creative Commons licence. The magnitude 7. The tsunamis that follow are particularly damaging.