A tsunami is a series of ocean waves that sends surges of water, sometimes reaching heights of over 100 feet (30.5 meters), onto land. The deadly earthquake that struck Japan Friday sent a tsunami racing across the Pacific Ocean, reaching Hawaii, the Pacific Northwest, and California. Southern California, Seattle, and Taiwan are some of the places where tsunamis may be more likely than thought, a new study says. Recognizing this phenomenon can save lives.A tsunami is usually composed of a series of waves, called a wave train, so its destructive force may be compounded as successive waves reach shore. The Pacific Tsunami Warning System, a coalition of 26 nations headquartered in Hawaii, maintains a web of seismic equipment and water level gauges to identify tsunamis at sea.
Support fund the sweeping retrofits at industrial and apartment buildings tsunami websites your supplies in an effortless-to-carry emergency preparedness kit. Tsunamis (pronounced soo-na-mees), also known as seismic sea waves (mistakenly called “tidal waves”), are a series of enormous waves created by an underwater disturbance such as an earthquake, landslide, volcanic eruption, or meteorite.
In light of Friday's tsunami following the Japan earthquake, find out how the killer waves are caused, what the warning signs are, and how to respond when a tsunami threatens. About ten days ago, the lives of the people in Japan changed forever, when a powerful earthquake rocked the nation, and triggered a giant tsunami that destroyed everything in its path.


A tsunami can move hundreds of miles per hour in the open ocean and smash into land with waves as high as 100 feet or more.From the area where the tsunami originates, waves travel outward in all directions. I asked Kumi if she'd be ok with me using a tsunami as one of my disasters and she gave me the go ahead. To keep the pumps running, the back-up diesel generators immediately kicked in and things went smoothly, until the tsunami hit, about 30 minutes later. And their long wavelengths mean they lose very little energy along the way.In deep ocean, tsunami waves may appear only a foot or so high.
That is why a small tsunami at one beach can be a giant wave a few miles away.All tsunamis are potentially dangerous, even though they may not damage every coastline they strike. The most destructive tsunamis have occurred along the coasts of California, Oregon, Washington, Alaska and Hawaii.Earthquake-induced movement of the ocean floor most often generates tsunamis. Tsunami waves and the receding water are very destructive to structures in the run-up zone. Evacuation orders may be based on these numbers.If you are a tourist, familiarize yourself with local tsunami evacuation protocols.
Warnings alert emergency management officials to take action for the entire tsunami hazard zone.


To provide the earliest possible alert, initial warnings are normally based only on seismic information.AdvisoryA tsunami advisory is issued when a tsunami with the potential to generate strong currents or waves dangerous to those in or very near the water is imminent or expected.
In most cases, information statements are issued to indicate there is no threat of a destructive tsunami and to prevent unnecessary evacuations as the earthquake may have been felt in coastal areas. An information statement may, in appropriate situations, caution about the possibility of destructive local tsunamis. CAUTION - If there is noticeable recession in water away from the shoreline this is nature's tsunami warning and it should be heeded. Tsunami water can cause floors to crack or walls to collapse.Use caution when re-entering buildings or homes.



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