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This was one of the most powerful earthquakes in Indonesia since the one which caused the Asian tsunami in 2004.
That measured 8.9 and struck under the sea near the northern Sumatran province of Aceh, triggering a tsunami that killed more than 220,000 people around the rim of the Indian Ocean. Our correspondent says quakes on this scale are rare and memories of 2004 have made the country terrified of a repeat.
how long does it take to know if the earthquake is conna create a tsunami?
how long does it take to know if the earthquake is conna create a tsunami?
Very quickly, if the area is monitored. They check wave height, and they are produced almost instantly after the earthquake. It'll be created depending on the amount of water is displaced at the plates, not by the amount of energy created. THe max that a plate can move I believe is around 30 or so feet, and tsunami's created by earthquakes will only be that height max.