TSUNAMI

Tsunami is a Japanese word meaning 'sea waves'. Tsunami is the Japanese word which means "harbour wave". In English, the tsunami wave known as tidal waves. Tsunami waves actually refer to the destructive beachfront building. Tsunamis are large waves caused by an earthquake that occurred on the seabed. Landslides, volcanic eruptions, explosions, and even the impact of cosmic material such as meteorites can also generate tsunamis. These waves move at a speed of several hundred kilometres per hour and the journey will raise and lower the water level of the sea. In the deep ocean, the tsunami wave amplitude is only a few centimetres in height or less. As the distance from peak to peak is hundreds of miles, fluctuations cannot be seen and felt by ships that sail on it and might not realize.

The earthquake is one of the main reasons that usually generate a tsunami. Tsunami can be created when the ocean floor with a sudden change of position will cause the water to agitate strong. Tectonic earthquakes are earthquakes that usually result in disability or a change in the earth's crust; when these earthquakes occur beneath the sea, the water above the deformed area from its equilibrium position. Waves are formed as the displaced water mass, which acts under the influence of gravity, attempts to regain its equilibrium. When the position of the sea floor (lift or down), a tsunami can be generated. The resulting wave to move quickly.

Currently, there are not many that can be made by those who are faced with a tsunami. On the islands of Japan, the government has built to resist the coastal embankment city of tsunami hazard, but of individuals, not much can be done except to know that they are expected to vacate the area hit by the tsunami. Residents in the coastal area that often face tsunami should also go towards the high ground in the event of an earthquake or volcanic eruption of living near a volcano. They also need to avoid going to the beach in the event of the early signs of a tsunami as the water receded suddenly. Tsunami can also hit a few times, so it is not recommended to go to the beach to see the damage after the first tsunami wave hit. This is to prevent the next tsunami hit.