Currently, in some countries have caused a tsunami that has been created to prevent and mitigate damage in the event of a tsunami to hit the coast of Japan, for example. Has built a wall to prevent tsunami with a height of 4.5 meters in front of the densely populated coastal areas. And for a country that had happened since 2004, when the tsunami damage is very serious in the southern provinces. After the tsunami, the Meteorological Department has issued measures to prevent the threat of a tsunami warning for citizens to protect themselves, without waiting for an announcement from the government.
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