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When an earthquake happens near an ocean the ocean can form a tsunami. Earthquakes result from seismic activity beneath the Earth's surface - sometimes terrestrial, sometimes submarine. Tsunamis occur most often along countries which border the Pacific "Rim of Fire", or "Ring of Fire'. One end of this region of high sesmic and volcanic activity begins at New Zealand, heading northwest to Indonesia (completely bypassing Australia) and then west to Papua New Guinea and Indonesia, northeast along the Asian coastline, east to North America and then south along the western North American coastline. Roughly horse-shoe shaped, the Ring of Fire extends about 40,000km long, and tsunamis can be generated anywhere along this rim.

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16y ago

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