We have already established a tsunami is a series of waves - not a single wave.įurthermore, tsunami waves travel much faster than other waves (around 10-30 mph at the shore, in excess of 500 mph at the earthquake epicenter) and pulls a great deal of debris from the ocean bottom in addition to crushed homes, cars, and shipping containers from the land, which makes surfing a deadly game.Ī tsunami is a series of large waves generated by a sudden displacement of water on the ocean floor that can result from an earthquake, an underwater landslide, a volcanic eruption or - very rarely - a large meteorite strike. A “tidal wave” is a term used in common folklore to mean the same thing as a tsunami, but is not the same thing. (©2012 World Vision/photo by Kei Itoh) Email Facebook Pinterest Twitter Share A magnitude 9.0 earthquake struck in the Pacific Ocean off the northeast coast of the Thoku region of Japan’s Honshu island on March 11, 2011. These waves are caused by the interaction of the pull of the moon’s gravity on the earth. Photo Workers clean up rubble of Kesennuma City on Japan’s northwest coast after the March 2011 earthquake and tsunami. Tidal waves are regular ocean waves, and are caused by the tides. Recognize natural warning signs for a tsunami, such as strong or unusually long earth shaking, and/or water receding from the shoreline, and if you feel and see them, move quickly inland and to higher ground.Ī tsunami is the same thing as a tidal wave. There will not always be enough time to issue a warning because a local tsunami can attack shorelines within minutes of an earthquake or underwater landslide. The major differences between Tsunami and Typhoon are the causes of their occurrence and their propensity for destruction. A tidal wave is a term used in common folklore to mean the same thing as a tsunami, but is not the same thing. These waves are caused by the interaction of the pull of the moon’s gravity on the earth.
Tsunamis are least destructive in deep, open ocean waters.Ī Tsunami Warning will alert me if a tsunami is on the way. Tidal waves are regular ocean waves, and are caused by the tides. Tsunamis are often most destructive in bays and harbors, not just because of the waves but because of the violent currents they can generate in local waterways. speed is no less than 51.0m/s (wind-force 16 or higher), it will be called super Typhoon. Boats should move to the protection of a bay or harbor during a tsunami. Public Protection Measures in Typhoon, Tsunami, Storm Tide.
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