Natural Hazards- Tsunami

“Tsunami in Japan 2011”

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“Tsunami in Japan 2011”

Description of the Natural Hazard

Tsunami- which is also known as “Tsunami wave train” is basically a sequence of waves of water which are generated by the dislocation of huge amount of body of water they can sometimes reach at a point of more than 100 feet high on land, more often an ocean although it can also appear in large lakes. These water fortifications can be the reason of extensive devastation if they crash shore.These dreadful waves are generally produced due to large earthquakes undersea at tectonic plate borders. As the ocean floor next to the plate boundary increase or decrease abruptly it dislocates the water over it and instigates the rolling waves that will be the reason of tsunami. About 80% of the tsunami occurs within the “Ring of fire” of Pacific Ocean, which is an active area geologically, where earthquakes and volcanoes are frequent because of tectonic shifts.

Tsunami travels across the sea at up to 805 kilometers per hour or 500 miles. Deep into the ocean the waves may occur at only foot or some high, but as these waves moves towards the seashore and mingles with the shallow water they get slow and start growing in height and energy. Various tsunamis do not occur on shoreline as extensive breaking waves but as an alternative be like rapidly heaving tide that swamp coastal areas( Toh H, 2011).The people going through the tsunami should not forget that the fear have not passed along with the first wave whereas they should wait for the officials to declare that area is safe.

History of the Natural Hazard

Any disturbance under or over water have capability to be the cause of Tsunami. Landslide glaciers calving, under water outburst or explosions this can also contain blowing up of nuclear devices underneath the water, earthquakes, Meteorite Ocean effect, volcanic upsurge or any other similar type of shock bearing event have the tendency to be the cause of tsunami.

Effects of Tsunami in Japan

On March 11, 2011, Japan was hit by a huge, dreadful earthquake that caused a highly implacable tsunami in the north of the country. The US Geological survey reported that the magnitude of the earthquake was between8.9-9.0 which is declared to be the most powerful and dreadful in the history of Japan (Denis, 2011). The earthquake clobbered about 230 miles northeast of Tokyo. The massive tsunami ...